]> sigrok.org Git - libsigrok.git/blobdiff - src/hardware/serial-dmm/api.c
output/csv: use intermediate time_t var, silence compiler warning
[libsigrok.git] / src / hardware / serial-dmm / api.c
index 0387c95ae039af0f94c7c59965388f9932872431..9af2bd5bc56e8b79a035fa78a24d613f8c6aa036 100644 (file)
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
+#include <config.h>
 #include <sys/types.h>
 #include <sys/stat.h>
 #include <fcntl.h>
 #include <string.h>
-#include <errno.h>
 #include <glib.h>
-#include "libsigrok.h"
+#include <libsigrok/libsigrok.h>
 #include "libsigrok-internal.h"
 #include "protocol.h"
 
@@ -34,404 +34,70 @@ static const uint32_t scanopts[] = {
        SR_CONF_SERIALCOMM,
 };
 
-static const uint32_t devopts[] = {
+static const uint32_t drvopts[] = {
        SR_CONF_MULTIMETER,
-       SR_CONF_CONTINUOUS,
-       SR_CONF_LIMIT_SAMPLES | SR_CONF_SET,
-       SR_CONF_LIMIT_MSEC | SR_CONF_SET,
 };
 
-SR_PRIV struct sr_dev_driver bbcgm_m2110_driver_info;
-SR_PRIV struct sr_dev_driver digitek_dt4000zc_driver_info;
-SR_PRIV struct sr_dev_driver tekpower_tp4000zc_driver_info;
-SR_PRIV struct sr_dev_driver metex_me31_driver_info;
-SR_PRIV struct sr_dev_driver peaktech_3410_driver_info;
-SR_PRIV struct sr_dev_driver mastech_mas345_driver_info;
-SR_PRIV struct sr_dev_driver mastech_ms8250b_driver_info;
-SR_PRIV struct sr_dev_driver va_va18b_driver_info;
-SR_PRIV struct sr_dev_driver va_va40b_driver_info;
-SR_PRIV struct sr_dev_driver metex_m3640d_driver_info;
-SR_PRIV struct sr_dev_driver metex_m4650cr_driver_info;
-SR_PRIV struct sr_dev_driver peaktech_4370_driver_info;
-SR_PRIV struct sr_dev_driver pce_pce_dm32_driver_info;
-SR_PRIV struct sr_dev_driver radioshack_22_168_driver_info;
-SR_PRIV struct sr_dev_driver radioshack_22_805_driver_info;
-SR_PRIV struct sr_dev_driver radioshack_22_812_driver_info;
-SR_PRIV struct sr_dev_driver tecpel_dmm_8061_ser_driver_info;
-SR_PRIV struct sr_dev_driver voltcraft_m3650cr_driver_info;
-SR_PRIV struct sr_dev_driver voltcraft_m3650d_driver_info;
-SR_PRIV struct sr_dev_driver voltcraft_m4650cr_driver_info;
-SR_PRIV struct sr_dev_driver voltcraft_me42_driver_info;
-SR_PRIV struct sr_dev_driver voltcraft_vc820_ser_driver_info;
-SR_PRIV struct sr_dev_driver voltcraft_vc830_ser_driver_info;
-SR_PRIV struct sr_dev_driver voltcraft_vc840_ser_driver_info;
-SR_PRIV struct sr_dev_driver voltcraft_vc920_ser_driver_info;
-SR_PRIV struct sr_dev_driver voltcraft_vc940_ser_driver_info;
-SR_PRIV struct sr_dev_driver voltcraft_vc960_ser_driver_info;
-SR_PRIV struct sr_dev_driver uni_t_ut60a_ser_driver_info;
-SR_PRIV struct sr_dev_driver uni_t_ut60e_ser_driver_info;
-SR_PRIV struct sr_dev_driver uni_t_ut60g_ser_driver_info;
-SR_PRIV struct sr_dev_driver uni_t_ut61b_ser_driver_info;
-SR_PRIV struct sr_dev_driver uni_t_ut61c_ser_driver_info;
-SR_PRIV struct sr_dev_driver uni_t_ut61d_ser_driver_info;
-SR_PRIV struct sr_dev_driver uni_t_ut61e_ser_driver_info;
-SR_PRIV struct sr_dev_driver uni_t_ut71a_ser_driver_info;
-SR_PRIV struct sr_dev_driver uni_t_ut71b_ser_driver_info;
-SR_PRIV struct sr_dev_driver uni_t_ut71c_ser_driver_info;
-SR_PRIV struct sr_dev_driver uni_t_ut71d_ser_driver_info;
-SR_PRIV struct sr_dev_driver uni_t_ut71e_ser_driver_info;
-SR_PRIV struct sr_dev_driver iso_tech_idm103n_driver_info;
-SR_PRIV struct sr_dev_driver tenma_72_7745_ser_driver_info;
-SR_PRIV struct sr_dev_driver tenma_72_7750_ser_driver_info;
-SR_PRIV struct sr_dev_driver brymen_bm25x_driver_info;
-
-SR_PRIV struct dmm_info dmms[] = {
-       {
-               "BBC Goertz Metrawatt", "M2110", "1200/7n2", 1200,
-               BBCGM_M2110_PACKET_SIZE, 0, 0, NULL,
-               sr_m2110_packet_valid, sr_m2110_parse,
-               NULL,
-               &bbcgm_m2110_driver_info, receive_data_BBCGM_M2110,
-       },
-       {
-               "Digitek", "DT4000ZC", "2400/8n1/dtr=1", 2400,
-               FS9721_PACKET_SIZE, 0, 0, NULL,
-               sr_fs9721_packet_valid, sr_fs9721_parse,
-               sr_fs9721_10_temp_c,
-               &digitek_dt4000zc_driver_info, receive_data_DIGITEK_DT4000ZC,
-       },
-       {
-               "TekPower", "TP4000ZC", "2400/8n1/dtr=1", 2400,
-               FS9721_PACKET_SIZE, 0, 0, NULL,
-               sr_fs9721_packet_valid, sr_fs9721_parse,
-               sr_fs9721_10_temp_c,
-               &tekpower_tp4000zc_driver_info, receive_data_TEKPOWER_TP4000ZC,
-       },
-       {
-               "Metex", "ME-31", "600/7n2/rts=0/dtr=1", 600,
-               METEX14_PACKET_SIZE, 0, 0, sr_metex14_packet_request,
-               sr_metex14_packet_valid, sr_metex14_parse,
-               NULL,
-               &metex_me31_driver_info, receive_data_METEX_ME31,
-       },
-       {
-               "Peaktech", "3410", "600/7n2/rts=0/dtr=1", 600,
-               METEX14_PACKET_SIZE, 0, 0, sr_metex14_packet_request,
-               sr_metex14_packet_valid, sr_metex14_parse,
-               NULL,
-               &peaktech_3410_driver_info, receive_data_PEAKTECH_3410,
-       },
-       {
-               "MASTECH", "MAS345", "600/7n2/rts=0/dtr=1", 600,
-               METEX14_PACKET_SIZE, 0, 0, sr_metex14_packet_request,
-               sr_metex14_packet_valid, sr_metex14_parse,
-               NULL,
-               &mastech_mas345_driver_info, receive_data_MASTECH_MAS345,
-       },
-       {
-               "MASTECH", "MS8250B", "2400/8n1/rts=0/dtr=1",
-               2400, FS9721_PACKET_SIZE, 0, 0, NULL,
-               sr_fs9721_packet_valid, sr_fs9721_parse,
-               NULL,
-               &mastech_ms8250b_driver_info, receive_data_MASTECH_MS8250B,
-       },
-       {
-               "V&A", "VA18B", "2400/8n1", 2400,
-               FS9721_PACKET_SIZE, 0, 0, NULL,
-               sr_fs9721_packet_valid, sr_fs9721_parse,
-               sr_fs9721_01_temp_c,
-               &va_va18b_driver_info, receive_data_VA_VA18B,
-       },
-       {
-               "V&A", "VA40B", "2400/8n1", 2400,
-               FS9721_PACKET_SIZE, 0, 0, NULL,
-               sr_fs9721_packet_valid, sr_fs9721_parse,
-               sr_fs9721_max_c_min,
-               &va_va40b_driver_info, receive_data_VA_VA40B,
-       },
-       {
-               "Metex", "M-3640D", "1200/7n2/rts=0/dtr=1", 1200,
-               METEX14_PACKET_SIZE, 0, 0, sr_metex14_packet_request,
-               sr_metex14_packet_valid, sr_metex14_parse,
-               NULL,
-               &metex_m3640d_driver_info, receive_data_METEX_M3640D,
-       },
-       {
-               "Metex", "M-4650CR", "1200/7n2/rts=0/dtr=1", 1200,
-               METEX14_PACKET_SIZE, 0, 0, sr_metex14_packet_request,
-               sr_metex14_packet_valid, sr_metex14_parse,
-               NULL,
-               &metex_m4650cr_driver_info, receive_data_METEX_M4650CR,
-       },
-       {
-               "PeakTech", "4370", "1200/7n2/rts=0/dtr=1", 1200,
-               METEX14_PACKET_SIZE, 0, 0, sr_metex14_packet_request,
-               sr_metex14_packet_valid, sr_metex14_parse,
-               NULL,
-               &peaktech_4370_driver_info, receive_data_PEAKTECH_4370,
-       },
-       {
-               "PCE", "PCE-DM32", "2400/8n1", 2400,
-               FS9721_PACKET_SIZE, 0, 0, NULL,
-               sr_fs9721_packet_valid, sr_fs9721_parse,
-               sr_fs9721_01_10_temp_f_c,
-               &pce_pce_dm32_driver_info, receive_data_PCE_PCE_DM32,
-       },
-       {
-               "RadioShack", "22-168", "1200/7n2/rts=0/dtr=1", 1200,
-               METEX14_PACKET_SIZE, 0, 0, sr_metex14_packet_request,
-               sr_metex14_packet_valid, sr_metex14_parse,
-               NULL,
-               &radioshack_22_168_driver_info, receive_data_RADIOSHACK_22_168,
-       },
-       {
-               "RadioShack", "22-805", "600/7n2/rts=0/dtr=1", 600,
-               METEX14_PACKET_SIZE, 0, 0, sr_metex14_packet_request,
-               sr_metex14_packet_valid, sr_metex14_parse,
-               NULL,
-               &radioshack_22_805_driver_info, receive_data_RADIOSHACK_22_805,
-       },
-       {
-               "RadioShack", "22-812", "4800/8n1/rts=0/dtr=1", 4800,
-               RS9LCD_PACKET_SIZE, 0, 0, NULL,
-               sr_rs9lcd_packet_valid, sr_rs9lcd_parse,
-               NULL,
-               &radioshack_22_812_driver_info, receive_data_RADIOSHACK_22_812,
-       },
-       {
-               "Tecpel", "DMM-8061 (UT-D02 cable)", "2400/8n1/rts=0/dtr=1",
-               2400, FS9721_PACKET_SIZE, 0, 0, NULL,
-               sr_fs9721_packet_valid, sr_fs9721_parse,
-               sr_fs9721_00_temp_c,
-               &tecpel_dmm_8061_ser_driver_info,
-               receive_data_TECPEL_DMM_8061_SER,
-       },
-       {
-               "Voltcraft", "M-3650CR", "1200/7n2/rts=0/dtr=1", 1200,
-               METEX14_PACKET_SIZE, 150, 20, sr_metex14_packet_request,
-               sr_metex14_packet_valid, sr_metex14_parse,
-               NULL,
-               &voltcraft_m3650cr_driver_info, receive_data_VOLTCRAFT_M3650CR,
-       },
-       {
-               "Voltcraft", "M-3650D", "1200/7n2/rts=0/dtr=1", 1200,
-               METEX14_PACKET_SIZE, 0, 0, sr_metex14_packet_request,
-               sr_metex14_packet_valid, sr_metex14_parse,
-               NULL,
-               &voltcraft_m3650d_driver_info, receive_data_VOLTCRAFT_M3650D,
-       },
-       {
-               "Voltcraft", "M-4650CR", "1200/7n2/rts=0/dtr=1", 1200,
-               METEX14_PACKET_SIZE, 0, 0, sr_metex14_packet_request,
-               sr_metex14_packet_valid, sr_metex14_parse,
-               NULL,
-               &voltcraft_m4650cr_driver_info, receive_data_VOLTCRAFT_M4650CR,
-       },
-       {
-               "Voltcraft", "ME-42", "600/7n2/rts=0/dtr=1", 600,
-               METEX14_PACKET_SIZE, 250, 60, sr_metex14_packet_request,
-               sr_metex14_packet_valid, sr_metex14_parse,
-               NULL,
-               &voltcraft_me42_driver_info, receive_data_VOLTCRAFT_ME42,
-       },
-       {
-               "Voltcraft", "VC-820 (UT-D02 cable)", "2400/8n1/rts=0/dtr=1",
-               2400, FS9721_PACKET_SIZE, 0, 0, NULL,
-               sr_fs9721_packet_valid, sr_fs9721_parse,
-               NULL,
-               &voltcraft_vc820_ser_driver_info,
-               receive_data_VOLTCRAFT_VC820_SER,
-       },
-       {
-               /*
-                * Note: The VC830 doesn't set the 'volt' and 'diode' bits of
-                * the FS9922 protocol. Instead, it only sets the user-defined
-                * bit "z1" to indicate "diode mode" and "voltage".
-                */
-               "Voltcraft", "VC-830 (UT-D02 cable)", "2400/8n1/rts=0/dtr=1",
-               2400, FS9922_PACKET_SIZE, 0, 0, NULL,
-               sr_fs9922_packet_valid, sr_fs9922_parse,
-               &sr_fs9922_z1_diode,
-               &voltcraft_vc830_ser_driver_info,
-               receive_data_VOLTCRAFT_VC830_SER,
-       },
-       {
-               "Voltcraft", "VC-840 (UT-D02 cable)", "2400/8n1/rts=0/dtr=1",
-               2400, FS9721_PACKET_SIZE, 0, 0, NULL,
-               sr_fs9721_packet_valid, sr_fs9721_parse,
-               sr_fs9721_00_temp_c,
-               &voltcraft_vc840_ser_driver_info,
-               receive_data_VOLTCRAFT_VC840_SER,
-       },
-       {
-               "Voltcraft", "VC-920 (UT-D02 cable)", "2400/7o1/rts=0/dtr=1",
-               2400, UT71X_PACKET_SIZE, 0, 0, NULL,
-               sr_ut71x_packet_valid, sr_ut71x_parse, NULL,
-               &voltcraft_vc920_ser_driver_info,
-               receive_data_VOLTCRAFT_VC920_SER,
-       },
-       {
-               "Voltcraft", "VC-940 (UT-D02 cable)", "2400/7o1/rts=0/dtr=1",
-               2400, UT71X_PACKET_SIZE, 0, 0, NULL,
-               sr_ut71x_packet_valid, sr_ut71x_parse, NULL,
-               &voltcraft_vc940_ser_driver_info,
-               receive_data_VOLTCRAFT_VC940_SER,
-       },
-       {
-               "Voltcraft", "VC-960 (UT-D02 cable)", "2400/7o1/rts=0/dtr=1",
-               2400, UT71X_PACKET_SIZE, 0, 0, NULL,
-               sr_ut71x_packet_valid, sr_ut71x_parse, NULL,
-               &voltcraft_vc960_ser_driver_info,
-               receive_data_VOLTCRAFT_VC960_SER,
-       },
-       {
-               "UNI-T", "UT60A (UT-D02 cable)", "2400/8n1/rts=0/dtr=1",
-               2400, FS9721_PACKET_SIZE, 0, 0, NULL,
-               sr_fs9721_packet_valid, sr_fs9721_parse,
-               NULL,
-               &uni_t_ut60a_ser_driver_info,
-               receive_data_UNI_T_UT60A_SER,
-       },
-       {
-               "UNI-T", "UT60E (UT-D02 cable)", "2400/8n1/rts=0/dtr=1",
-               2400, FS9721_PACKET_SIZE, 0, 0, NULL,
-               sr_fs9721_packet_valid, sr_fs9721_parse,
-               sr_fs9721_00_temp_c,
-               &uni_t_ut60e_ser_driver_info,
-               receive_data_UNI_T_UT60E_SER,
-       },
-       {
-               /* Note: ES51986 baudrate is actually 19230! */
-               "UNI-T", "UT60G (UT-D02 cable)", "19200/7o1/rts=0/dtr=1",
-               19200, ES519XX_11B_PACKET_SIZE, 0, 0, NULL,
-               sr_es519xx_19200_11b_packet_valid, sr_es519xx_19200_11b_parse,
-               NULL,
-               &uni_t_ut60g_ser_driver_info, receive_data_UNI_T_UT60G_SER,
-       },
-       {
-               "UNI-T", "UT61B (UT-D02 cable)", "2400/8n1/rts=0/dtr=1",
-               2400, FS9922_PACKET_SIZE, 0, 0, NULL,
-               sr_fs9922_packet_valid, sr_fs9922_parse, NULL,
-               &uni_t_ut61b_ser_driver_info, receive_data_UNI_T_UT61B_SER,
-       },
-       {
-               "UNI-T", "UT61C (UT-D02 cable)", "2400/8n1/rts=0/dtr=1",
-               2400, FS9922_PACKET_SIZE, 0, 0, NULL,
-               sr_fs9922_packet_valid, sr_fs9922_parse, NULL,
-               &uni_t_ut61c_ser_driver_info, receive_data_UNI_T_UT61C_SER,
-       },
-       {
-               "UNI-T", "UT61D (UT-D02 cable)", "2400/8n1/rts=0/dtr=1",
-               2400, FS9922_PACKET_SIZE, 0, 0, NULL,
-               sr_fs9922_packet_valid, sr_fs9922_parse, NULL,
-               &uni_t_ut61d_ser_driver_info, receive_data_UNI_T_UT61D_SER,
-       },
-       {
-               /* Note: ES51922 baudrate is actually 19230! */
-               "UNI-T", "UT61E (UT-D02 cable)", "19200/7o1/rts=0/dtr=1",
-               19200, ES519XX_14B_PACKET_SIZE, 0, 0, NULL,
-               sr_es519xx_19200_14b_packet_valid, sr_es519xx_19200_14b_parse,
-               NULL,
-               &uni_t_ut61e_ser_driver_info, receive_data_UNI_T_UT61E_SER,
-       },
-       {
-               "UNI-T", "UT71A (UT-D02 cable)", "2400/7o1/rts=0/dtr=1",
-               2400, UT71X_PACKET_SIZE, 0, 0, NULL,
-               sr_ut71x_packet_valid, sr_ut71x_parse, NULL,
-               &uni_t_ut71a_ser_driver_info, receive_data_UNI_T_UT71A_SER,
-       },
-       {
-               "UNI-T", "UT71B (UT-D02 cable)", "2400/7o1/rts=0/dtr=1",
-               2400, UT71X_PACKET_SIZE, 0, 0, NULL,
-               sr_ut71x_packet_valid, sr_ut71x_parse, NULL,
-               &uni_t_ut71b_ser_driver_info, receive_data_UNI_T_UT71B_SER,
-       },
-       {
-               "UNI-T", "UT71C (UT-D02 cable)", "2400/7o1/rts=0/dtr=1",
-               2400, UT71X_PACKET_SIZE, 0, 0, NULL,
-               sr_ut71x_packet_valid, sr_ut71x_parse, NULL,
-               &uni_t_ut71c_ser_driver_info, receive_data_UNI_T_UT71C_SER,
-       },
-       {
-               "UNI-T", "UT71D (UT-D02 cable)", "2400/7o1/rts=0/dtr=1",
-               2400, UT71X_PACKET_SIZE, 0, 0, NULL,
-               sr_ut71x_packet_valid, sr_ut71x_parse, NULL,
-               &uni_t_ut71d_ser_driver_info, receive_data_UNI_T_UT71D_SER,
-       },
-       {
-               "UNI-T", "UT71E (UT-D02 cable)", "2400/7o1/rts=0/dtr=1",
-               2400, UT71X_PACKET_SIZE, 0, 0, NULL,
-               sr_ut71x_packet_valid, sr_ut71x_parse, NULL,
-               &uni_t_ut71e_ser_driver_info, receive_data_UNI_T_UT71E_SER,
-       },
-       {
-               "ISO-TECH", "IDM103N", "2400/7o1/rts=0/dtr=1",
-               2400, ES519XX_11B_PACKET_SIZE, 0, 0, NULL,
-               sr_es519xx_2400_11b_packet_valid, sr_es519xx_2400_11b_parse,
-               NULL,
-               &iso_tech_idm103n_driver_info, receive_data_ISO_TECH_IDM103N,
-       },
-       {
-               "Tenma", "72-7745 (UT-D02 cable)", "2400/8n1/rts=0/dtr=1",
-               2400, FS9721_PACKET_SIZE, 0, 0, NULL,
-               sr_fs9721_packet_valid, sr_fs9721_parse,
-               sr_fs9721_00_temp_c,
-               &tenma_72_7745_ser_driver_info, receive_data_TENMA_72_7745_SER,
-       },
-       {
-               /* Note: ES51986 baudrate is actually 19230! */
-               "Tenma", "72-7750 (UT-D02 cable)", "19200/7o1/rts=0/dtr=1",
-               19200, ES519XX_11B_PACKET_SIZE, 0, 0, NULL,
-               sr_es519xx_19200_11b_packet_valid, sr_es519xx_19200_11b_parse,
-               NULL,
-               &tenma_72_7750_ser_driver_info, receive_data_TENMA_72_7750_SER,
-       },
-       {
-               "Brymen", "BM25x", "9600/8n1/rts=1/dtr=1",
-               9600, BRYMEN_BM25X_PACKET_SIZE, 0, 0, NULL,
-               sr_brymen_bm25x_packet_valid, sr_brymen_bm25x_parse,
-               NULL,
-               &brymen_bm25x_driver_info, receive_data_BRYMEN_BM25X,
-       },
+static const uint32_t devopts[] = {
+       SR_CONF_CONTINUOUS,
+       SR_CONF_LIMIT_SAMPLES | SR_CONF_GET | SR_CONF_SET,
+       SR_CONF_LIMIT_MSEC | SR_CONF_GET | SR_CONF_SET,
 };
 
-static int dev_clear(int dmm)
-{
-       return std_dev_clear(dmms[dmm].di, NULL);
-}
-
-static int init(struct sr_context *sr_ctx, int dmm)
-{
-       return std_init(sr_ctx, dmms[dmm].di, LOG_PREFIX);
-}
-
-static GSList *sdmm_scan(const char *conn, const char *serialcomm, int dmm)
+static GSList *scan(struct sr_dev_driver *di, GSList *options)
 {
+       struct dmm_info *dmm;
+       struct sr_config *src;
+       GSList *l, *devices;
+       const char *conn, *serialcomm;
        struct sr_dev_inst *sdi;
-       struct drv_context *drvc;
        struct dev_context *devc;
        struct sr_serial_dev_inst *serial;
-       GSList *devices;
-       int dropped, ret;
-       size_t len;
+       int ret;
+       size_t dropped, len, packet_len;
        uint8_t buf[128];
+       size_t ch_idx;
+       char ch_name[12];
+
+       dmm = (struct dmm_info *)di;
+
+       conn = dmm->conn;
+       serialcomm = dmm->serialcomm;
+       for (l = options; l; l = l->next) {
+               src = l->data;
+               switch (src->key) {
+               case SR_CONF_CONN:
+                       conn = g_variant_get_string(src->data, NULL);
+                       break;
+               case SR_CONF_SERIALCOMM:
+                       serialcomm = g_variant_get_string(src->data, NULL);
+                       break;
+               }
+       }
+       if (!conn)
+               return NULL;
 
        serial = sr_serial_dev_inst_new(conn, serialcomm);
 
        if (serial_open(serial, SERIAL_RDWR) != SR_OK)
                return NULL;
-
        sr_info("Probing serial port %s.", conn);
 
-       drvc = dmms[dmm].di->priv;
+       if (dmm->after_open) {
+               ret = dmm->after_open(serial);
+               if (ret != SR_OK) {
+                       sr_err("Activity after port open failed: %d.", ret);
+                       return NULL;
+               }
+       }
+
        devices = NULL;
-       serial_flush(serial);
 
        /* Request a packet if the DMM requires this. */
-       if (dmms[dmm].packet_request) {
-               if ((ret = dmms[dmm].packet_request(serial)) < 0) {
+       if (dmm->packet_request) {
+               if ((ret = dmm->packet_request(serial)) < 0) {
                        sr_err("Failed to request packet: %d.", ret);
-                       return FALSE;
+                       return NULL;
                }
        }
 
@@ -439,268 +105,761 @@ static GSList *sdmm_scan(const char *conn, const char *serialcomm, int dmm)
         * There's no way to get an ID from the multimeter. It just sends data
         * periodically (or upon request), so the best we can do is check if
         * the packets match the expected format.
-        */
-
-       /* Let's get a bit of data and see if we can find a packet. */
-       len = sizeof(buf);
-       ret = serial_stream_detect(serial, buf, &len, dmms[dmm].packet_size,
-                                  dmms[dmm].packet_valid, 3000,
-                                  dmms[dmm].baudrate);
-       if (ret != SR_OK)
-               goto scan_cleanup;
-
-       /*
+        *
         * If we dropped more than two packets worth of data, something is
         * wrong. We shouldn't quit however, since the dropped bytes might be
         * just zeroes at the beginning of the stream. Those can occur as a
         * combination of the nonstandard cable that ships with some devices
         * and the serial port or USB to serial adapter.
         */
-       dropped = len - dmms[dmm].packet_size;
-       if (dropped > 2 * dmms[dmm].packet_size)
-               sr_warn("Had to drop too much data.");
-
+       len = sizeof(buf);
+       ret = serial_stream_detect(serial, buf, &len, dmm->packet_size,
+               dmm->packet_valid, dmm->packet_valid_len, &packet_len, 3000);
+       if (ret != SR_OK)
+               goto scan_cleanup;
+       dropped = len - dmm->packet_size;
+       if (dropped > 2 * packet_len)
+               sr_warn("Packet search dropped a lot of data.");
        sr_info("Found device on port %s.", conn);
 
-       sdi = g_malloc0(sizeof(struct sr_dev_inst));
+       /*
+        * Setup optional additional callbacks when sub device drivers
+        * happen to provide them. (This is a compromise to do it here,
+        * and not extend the DMM_CONN() et al set of macros.)
+        */
+       if (strcmp(dmm->di.name, "brymen-bm52x") == 0) {
+               /* Applicable to BM520s but not to BM820s. */
+               dmm->dmm_state_init = brymen_bm52x_state_init;
+               dmm->dmm_state_free = brymen_bm52x_state_free;
+               dmm->config_get = brymen_bm52x_config_get;
+               dmm->config_set = brymen_bm52x_config_set;
+               dmm->config_list = brymen_bm52x_config_list;
+               dmm->acquire_start = brymen_bm52x_acquire_start;
+       }
+       if (dmm->dmm_state_init)
+               dmm->dmm_state = dmm->dmm_state_init();
+
+       /* Setup the device instance. */
+       sdi = g_malloc0(sizeof(*sdi));
        sdi->status = SR_ST_INACTIVE;
-       sdi->vendor = g_strdup(dmms[dmm].vendor);
-       sdi->model = g_strdup(dmms[dmm].device);
-       devc = g_malloc0(sizeof(struct dev_context));
+       sdi->vendor = g_strdup(dmm->vendor);
+       sdi->model = g_strdup(dmm->device);
+       devc = g_malloc0(sizeof(*devc));
+       sr_sw_limits_init(&devc->limits);
        sdi->inst_type = SR_INST_SERIAL;
        sdi->conn = serial;
        sdi->priv = devc;
-       sdi->driver = dmms[dmm].di;
-       sr_channel_new(sdi, 0, SR_CHANNEL_ANALOG, TRUE, "P1");
-       drvc->instances = g_slist_append(drvc->instances, sdi);
+
+       /* Create (optionally device dependent) channel(s). */
+       dmm->channel_count = 1;
+       if (dmm->packet_parse == sr_brymen_bm52x_parse)
+               dmm->channel_count = BRYMEN_BM52X_DISPLAY_COUNT;
+       if (dmm->packet_parse == sr_brymen_bm86x_parse)
+               dmm->channel_count = BRYMEN_BM86X_DISPLAY_COUNT;
+       if (dmm->packet_parse == sr_eev121gw_3displays_parse) {
+               dmm->channel_count = EEV121GW_DISPLAY_COUNT;
+               dmm->channel_formats = eev121gw_channel_formats;
+       }
+       if (dmm->packet_parse == sr_metex14_4packets_parse)
+               dmm->channel_count = 4;
+       if (dmm->packet_parse == sr_ms2115b_parse) {
+               dmm->channel_count = MS2115B_DISPLAY_COUNT;
+               dmm->channel_formats = ms2115b_channel_formats;
+       }
+       for (ch_idx = 0; ch_idx < dmm->channel_count; ch_idx++) {
+               size_t ch_num;
+               const char *fmt;
+               fmt = "P%zu";
+               if (dmm->channel_formats && dmm->channel_formats[ch_idx])
+                       fmt = dmm->channel_formats[ch_idx];
+               ch_num = ch_idx + 1;
+               snprintf(ch_name, sizeof(ch_name), fmt, ch_num);
+               sr_channel_new(sdi, ch_idx, SR_CHANNEL_ANALOG, TRUE, ch_name);
+       }
+
+       /* Add found device to result set. */
        devices = g_slist_append(devices, sdi);
 
 scan_cleanup:
        serial_close(serial);
 
-       return devices;
+       return std_scan_complete(di, devices);
 }
 
-static GSList *scan(GSList *options, int dmm)
+static int config_get(uint32_t key, GVariant **data,
+       const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
 {
-       struct sr_config *src;
-       GSList *l, *devices;
-       const char *conn, *serialcomm;
+       struct dev_context *devc;
+       struct dmm_info *dmm;
 
-       conn = serialcomm = NULL;
-       for (l = options; l; l = l->next) {
-               src = l->data;
-               switch (src->key) {
-               case SR_CONF_CONN:
-                       conn = g_variant_get_string(src->data, NULL);
-                       break;
-               case SR_CONF_SERIALCOMM:
-                       serialcomm = g_variant_get_string(src->data, NULL);
-                       break;
-               }
-       }
-       if (!conn)
-               return NULL;
+       if (!sdi)
+               return SR_ERR_ARG;
+       devc = sdi->priv;
 
-       if (serialcomm) {
-               /* Use the provided comm specs. */
-               devices = sdmm_scan(conn, serialcomm, dmm);
-       } else {
-               /* Try the default. */
-               devices = sdmm_scan(conn, dmms[dmm].conn, dmm);
+       switch (key) {
+       case SR_CONF_LIMIT_SAMPLES:
+       case SR_CONF_LIMIT_FRAMES:
+       case SR_CONF_LIMIT_MSEC:
+               return sr_sw_limits_config_get(&devc->limits, key, data);
+       default:
+               dmm = (struct dmm_info *)sdi->driver;
+               if (!dmm || !dmm->config_get)
+                       return SR_ERR_NA;
+               return dmm->config_get(dmm->dmm_state, key, data, sdi, cg);
        }
-
-       return devices;
+       /* UNREACH */
 }
 
-static GSList *dev_list(int dmm)
-{
-       return ((struct drv_context *)(dmms[dmm].di->priv))->instances;
-}
-
-static int cleanup(int dmm)
-{
-       return dev_clear(dmm);
-}
-
-static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi,
-               const struct sr_channel_group *cg)
+static int config_set(uint32_t key, GVariant *data,
+       const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
 {
        struct dev_context *devc;
+       struct dmm_info *dmm;
 
+       if (!sdi)
+               return SR_ERR_ARG;
+       devc = sdi->priv;
        (void)cg;
 
-       if (sdi->status != SR_ST_ACTIVE)
-               return SR_ERR_DEV_CLOSED;
-
-       if (!(devc = sdi->priv)) {
-               sr_err("sdi->priv was NULL.");
-               return SR_ERR_BUG;
-       }
-
        switch (key) {
        case SR_CONF_LIMIT_SAMPLES:
-               devc->limit_samples = g_variant_get_uint64(data);
-               sr_dbg("Setting sample limit to %" PRIu64 ".",
-                      devc->limit_samples);
-               break;
+       case SR_CONF_LIMIT_FRAMES:
        case SR_CONF_LIMIT_MSEC:
-               devc->limit_msec = g_variant_get_uint64(data);
-               sr_dbg("Setting time limit to %" PRIu64 "ms.",
-                      devc->limit_msec);
-               break;
+               return sr_sw_limits_config_set(&devc->limits, key, data);
        default:
-               return SR_ERR_NA;
+               dmm = (struct dmm_info *)sdi->driver;
+               if (!dmm || !dmm->config_set)
+                       return SR_ERR_NA;
+               return dmm->config_set(dmm->dmm_state, key, data, sdi, cg);
        }
-
-       return SR_OK;
 }
 
-static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
-               const struct sr_channel_group *cg)
+static int config_list(uint32_t key, GVariant **data,
+       const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
 {
-       (void)sdi;
-       (void)cg;
+       struct dmm_info *dmm;
+       int ret;
 
-       switch (key) {
-       case SR_CONF_SCAN_OPTIONS:
-               *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
-                               scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t));
-               break;
-       case SR_CONF_DEVICE_OPTIONS:
-               *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
-                               devopts, ARRAY_SIZE(devopts), sizeof(uint32_t));
-               break;
-       default:
-               return SR_ERR_NA;
+       /* Use common logic for standard keys. */
+       if (!sdi)
+               return STD_CONFIG_LIST(key, data, sdi, cg, scanopts, drvopts, devopts);
+
+       /*
+        * Check for device specific config_list handler. ERR N/A from
+        * that handler is non-fatal, just falls back to common logic.
+        */
+       dmm = (struct dmm_info *)sdi->driver;
+       if (dmm && dmm->config_list) {
+               ret = dmm->config_list(dmm->dmm_state, key, data, sdi, cg);
+               if (ret != SR_ERR_NA)
+                       return ret;
        }
 
-       return SR_OK;
+       return STD_CONFIG_LIST(key, data, sdi, cg, scanopts, drvopts, devopts);
 }
 
-static int dev_acquisition_start(const struct sr_dev_inst *sdi,
-                                   void *cb_data, int dmm)
+static int dev_acquisition_start(const struct sr_dev_inst *sdi)
 {
        struct dev_context *devc;
+       struct dmm_info *dmm;
+       sr_receive_data_callback cb_func;
+       void *cb_data;
+       int ret;
        struct sr_serial_dev_inst *serial;
 
-       if (sdi->status != SR_ST_ACTIVE)
-               return SR_ERR_DEV_CLOSED;
-
-       if (!(devc = sdi->priv)) {
-               sr_err("sdi->priv was NULL.");
-               return SR_ERR_BUG;
-       }
-
-       devc->cb_data = cb_data;
+       devc = sdi->priv;
 
-       /*
-        * Reset the number of samples to take. If we've already collected our
-        * quota, but we start a new session, and don't reset this, we'll just
-        * quit without acquiring any new samples.
-        */
-       devc->num_samples = 0;
-       devc->starttime = g_get_monotonic_time();
+       sr_sw_limits_acquisition_start(&devc->limits);
+       std_session_send_df_header(sdi);
 
-       /* Send header packet to the session bus. */
-       std_session_send_df_header(cb_data, LOG_PREFIX);
+       cb_func = receive_data;
+       cb_data = (void *)sdi;
+       dmm = (struct dmm_info *)sdi->driver;
+       if (dmm && dmm->acquire_start) {
+               ret = dmm->acquire_start(dmm->dmm_state, sdi,
+                       &cb_func, &cb_data);
+               if (ret < 0)
+                       return ret;
+       }
 
-       /* Poll every 50ms, or whenever some data comes in. */
        serial = sdi->conn;
        serial_source_add(sdi->session, serial, G_IO_IN, 50,
-                     dmms[dmm].receive_data, (void *)sdi);
+               cb_func, cb_data);
 
        return SR_OK;
 }
 
-static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
-{
-       return std_serial_dev_acquisition_stop(sdi, cb_data, std_serial_dev_close,
-                       sdi->conn, LOG_PREFIX);
-}
-
-/* Driver-specific API function wrappers */
-#define HW_INIT(X) \
-static int init_##X(struct sr_context *sr_ctx) { return init(sr_ctx, X); }
-#define HW_CLEANUP(X) \
-static int cleanup_##X(void) { return cleanup(X); }
-#define HW_SCAN(X) \
-static GSList *scan_##X(GSList *options) { return scan(options, X); }
-#define HW_DEV_LIST(X) \
-static GSList *dev_list_##X(void) { return dev_list(X); }
-#define HW_DEV_CLEAR(X) \
-static int dev_clear_##X(void) { return dev_clear(X); }
-#define HW_DEV_ACQUISITION_START(X) \
-static int dev_acquisition_start_##X(const struct sr_dev_inst *sdi, \
-void *cb_data) { return dev_acquisition_start(sdi, cb_data, X); }
-
-/* Driver structs and API function wrappers */
-#define DRV(ID, ID_UPPER, NAME, LONGNAME) \
-HW_INIT(ID_UPPER) \
-HW_CLEANUP(ID_UPPER) \
-HW_SCAN(ID_UPPER) \
-HW_DEV_LIST(ID_UPPER) \
-HW_DEV_CLEAR(ID_UPPER) \
-HW_DEV_ACQUISITION_START(ID_UPPER) \
-SR_PRIV struct sr_dev_driver ID##_driver_info = { \
-       .name = NAME, \
-       .longname = LONGNAME, \
-       .api_version = 1, \
-       .init = init_##ID_UPPER, \
-       .cleanup = cleanup_##ID_UPPER, \
-       .scan = scan_##ID_UPPER, \
-       .dev_list = dev_list_##ID_UPPER, \
-       .dev_clear = dev_clear_##ID_UPPER, \
-       .config_get = NULL, \
-       .config_set = config_set, \
-       .config_list = config_list, \
-       .dev_open = std_serial_dev_open, \
-       .dev_close = std_serial_dev_close, \
-       .dev_acquisition_start = dev_acquisition_start_##ID_UPPER, \
-       .dev_acquisition_stop = dev_acquisition_stop, \
-       .priv = NULL, \
-};
-
-DRV(bbcgm_m2110, BBCGM_M2110, "bbcgm-m2110", "BBC Goertz Metrawatt M2110")
-DRV(digitek_dt4000zc, DIGITEK_DT4000ZC, "digitek-dt4000zc", "Digitek DT4000ZC")
-DRV(tekpower_tp4000zc, TEKPOWER_TP4000ZC, "tekpower-tp4000zc", "TekPower TP4000ZC")
-DRV(metex_me31, METEX_ME31, "metex-me31", "Metex ME-31")
-DRV(peaktech_3410, PEAKTECH_3410, "peaktech-3410", "PeakTech 3410")
-DRV(mastech_mas345, MASTECH_MAS345, "mastech-mas345", "MASTECH MAS345")
-DRV(mastech_ms8250b, MASTECH_MS8250B, "mastech-ms8250b", "MASTECH MS8250B")
-DRV(va_va18b, VA_VA18B, "va-va18b", "V&A VA18B")
-DRV(va_va40b, VA_VA40B, "va-va40b", "V&A VA40B")
-DRV(metex_m3640d, METEX_M3640D, "metex-m3640d", "Metex M-3640D")
-DRV(metex_m4650cr, METEX_M4650CR, "metex-m4650cr", "Metex M-4650CR")
-DRV(peaktech_4370, PEAKTECH_4370, "peaktech-4370", "PeakTech 4370")
-DRV(pce_pce_dm32, PCE_PCE_DM32, "pce-pce-dm32", "PCE PCE-DM32")
-DRV(radioshack_22_168, RADIOSHACK_22_168, "radioshack-22-168", "RadioShack 22-168")
-DRV(radioshack_22_805, RADIOSHACK_22_805, "radioshack-22-805", "RadioShack 22-805")
-DRV(radioshack_22_812, RADIOSHACK_22_812, "radioshack-22-812", "RadioShack 22-812")
-DRV(tecpel_dmm_8061_ser, TECPEL_DMM_8061_SER, "tecpel-dmm-8061-ser", "Tecpel DMM-8061 (UT-D02 cable)")
-DRV(voltcraft_m3650cr, VOLTCRAFT_M3650CR, "voltcraft-m3650cr", "Voltcraft M-3650CR")
-DRV(voltcraft_m3650d, VOLTCRAFT_M3650D, "voltcraft-m3650d", "Voltcraft M-3650D")
-DRV(voltcraft_m4650cr, VOLTCRAFT_M4650CR, "voltcraft-m4650cr", "Voltcraft M-4650CR")
-DRV(voltcraft_me42, VOLTCRAFT_ME42, "voltcraft-me42", "Voltcraft ME-42")
-DRV(voltcraft_vc820_ser, VOLTCRAFT_VC820_SER, "voltcraft-vc820-ser", "Voltcraft VC-820 (UT-D02 cable)")
-DRV(voltcraft_vc830_ser, VOLTCRAFT_VC830_SER, "voltcraft-vc830-ser", "Voltcraft VC-830 (UT-D02 cable)")
-DRV(voltcraft_vc840_ser, VOLTCRAFT_VC840_SER, "voltcraft-vc840-ser", "Voltcraft VC-840 (UT-D02 cable)")
-DRV(voltcraft_vc920_ser, VOLTCRAFT_VC920_SER, "voltcraft-vc920-ser", "Voltcraft VC-920 (UT-D02 cable)")
-DRV(voltcraft_vc940_ser, VOLTCRAFT_VC940_SER, "voltcraft-vc940-ser", "Voltcraft VC-940 (UT-D02 cable)")
-DRV(voltcraft_vc960_ser, VOLTCRAFT_VC960_SER, "voltcraft-vc960-ser", "Voltcraft VC-960 (UT-D02 cable)")
-DRV(uni_t_ut60a_ser, UNI_T_UT60A_SER, "uni-t-ut60a-ser", "UNI-T UT60A (UT-D02 cable)")
-DRV(uni_t_ut60e_ser, UNI_T_UT60E_SER, "uni-t-ut60e-ser", "UNI-T UT60E (UT-D02 cable)")
-DRV(uni_t_ut60g_ser, UNI_T_UT60G_SER, "uni-t-ut60g-ser", "UNI-T UT60G (UT-D02 cable)")
-DRV(uni_t_ut61b_ser, UNI_T_UT61B_SER, "uni-t-ut61b-ser", "UNI-T UT61B (UT-D02 cable)")
-DRV(uni_t_ut61c_ser, UNI_T_UT61C_SER, "uni-t-ut61c-ser", "UNI-T UT61C (UT-D02 cable)")
-DRV(uni_t_ut61d_ser, UNI_T_UT61D_SER, "uni-t-ut61d-ser", "UNI-T UT61D (UT-D02 cable)")
-DRV(uni_t_ut61e_ser, UNI_T_UT61E_SER, "uni-t-ut61e-ser", "UNI-T UT61E (UT-D02 cable)")
-DRV(uni_t_ut71a_ser, UNI_T_UT71A_SER, "uni-t-ut71a-ser", "UNI-T UT71A (UT-D02 cable)")
-DRV(uni_t_ut71b_ser, UNI_T_UT71B_SER, "uni-t-ut71b-ser", "UNI-T UT71B (UT-D02 cable)")
-DRV(uni_t_ut71c_ser, UNI_T_UT71C_SER, "uni-t-ut71c-ser", "UNI-T UT71C (UT-D02 cable)")
-DRV(uni_t_ut71d_ser, UNI_T_UT71D_SER, "uni-t-ut71d-ser", "UNI-T UT71D (UT-D02 cable)")
-DRV(uni_t_ut71e_ser, UNI_T_UT71E_SER, "uni-t-ut71e-ser", "UNI-T UT71E (UT-D02 cable)")
-DRV(iso_tech_idm103n, ISO_TECH_IDM103N, "iso-tech-idm103n", "ISO-TECH IDM103N")
-DRV(tenma_72_7745_ser, TENMA_72_7745_SER, "tenma-72-7745-ser", "Tenma 72-7745 (UT-D02 cable)")
-DRV(tenma_72_7750_ser, TENMA_72_7750_SER, "tenma-72-7750-ser", "Tenma 72-7750 (UT-D02 cable)")
-DRV(brymen_bm25x, BRYMEN_BM25X, "brymen-bm25x", "Brymen BM25x")
+#define DMM_ENTRY(ID, CHIPSET, VENDOR, MODEL, \
+               CONN, SERIALCOMM, PACKETSIZE, TIMEOUT, DELAY, \
+               OPEN, REQUEST, VALID, PARSE, DETAILS, \
+               INIT_STATE, FREE_STATE, VALID_LEN, PARSE_LEN, \
+               CFG_GET, CFG_SET, CFG_LIST, ACQ_START) \
+       &((struct dmm_info) { \
+               { \
+                       .name = ID, \
+                       .longname = VENDOR " " MODEL, \
+                       .api_version = 1, \
+                       .init = std_init, \
+                       .cleanup = std_cleanup, \
+                       .scan = scan, \
+                       .dev_list = std_dev_list, \
+                       .dev_clear = std_dev_clear, \
+                       .config_get = config_get, \
+                       .config_set = config_set, \
+                       .config_list = config_list, \
+                       .dev_open = std_serial_dev_open, \
+                       .dev_close = std_serial_dev_close, \
+                       .dev_acquisition_start = dev_acquisition_start, \
+                       .dev_acquisition_stop = std_serial_dev_acquisition_stop, \
+                       .context = NULL, \
+               }, \
+               VENDOR, MODEL, CONN, SERIALCOMM, PACKETSIZE, TIMEOUT, DELAY, \
+               REQUEST, 1, NULL, VALID, PARSE, DETAILS, \
+               sizeof(struct CHIPSET##_info), \
+               NULL, INIT_STATE, FREE_STATE, \
+               OPEN, VALID_LEN, PARSE_LEN, \
+               CFG_GET, CFG_SET, CFG_LIST, ACQ_START, \
+       }).di
+
+#define DMM_CONN(ID, CHIPSET, VENDOR, MODEL, \
+               CONN, SERIALCOMM, PACKETSIZE, TIMEOUT, DELAY, \
+               REQUEST, VALID, PARSE, DETAILS) \
+       DMM_ENTRY(ID, CHIPSET, VENDOR, MODEL, \
+               CONN, SERIALCOMM, PACKETSIZE, TIMEOUT, DELAY, \
+               NULL, REQUEST, VALID, PARSE, DETAILS, \
+               NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL)
+
+#define DMM(ID, CHIPSET, VENDOR, MODEL, SERIALCOMM, PACKETSIZE, TIMEOUT, \
+               DELAY, REQUEST, VALID, PARSE, DETAILS) \
+       DMM_CONN(ID, CHIPSET, VENDOR, MODEL, \
+               NULL, SERIALCOMM, PACKETSIZE, TIMEOUT, DELAY, \
+               REQUEST, VALID, PARSE, DETAILS)
+
+#define DMM_LEN(ID, CHIPSET, VENDOR, MODEL, \
+               CONN, SERIALCOMM, PACKETSIZE, TIMEOUT, DELAY, \
+               INIT, FREE, OPEN, REQUEST, VALID, PARSE, DETAILS) \
+       DMM_ENTRY(ID, CHIPSET, VENDOR, MODEL, \
+               CONN, SERIALCOMM, PACKETSIZE, TIMEOUT, DELAY, \
+               OPEN, REQUEST, NULL, NULL, DETAILS, \
+               INIT, FREE, VALID, PARSE, NULL, NULL, NULL, NULL)
+
+SR_REGISTER_DEV_DRIVER_LIST(serial_dmm_drivers,
+       /*
+        * The items are sorted by chipset first and then model name.
+        *
+        * This reflects the developer's perspective and is preferrable
+        * during maintenance, as a vendor/product based sort order does
+        * not work well for rebranded models, and from a support point
+        * of view it's more important to identify similarities between
+        * models and compatible devices.
+        *
+        * Fold marks {{{ }}} with matching braces were added, to further
+        * speed up navigation in the long list.
+        */
+       /* asycii based meters {{{ */
+       DMM(
+               "metrix-mx56c", asycii, "Metrix", "MX56C",
+               "2400/8n1", ASYCII_PACKET_SIZE, 0, 0, NULL,
+               sr_asycii_packet_valid, sr_asycii_parse, NULL
+       ),
+       /* }}} */
+       /* bm25x based meters {{{ */
+       DMM(
+               "brymen-bm25x", bm25x,
+               "Brymen", "BM25x", "9600/8n1/rts=1/dtr=1",
+               BRYMEN_BM25X_PACKET_SIZE, 0, 0, NULL,
+               sr_brymen_bm25x_packet_valid, sr_brymen_bm25x_parse,
+               NULL
+       ),
+       /* }}} */
+       /* bm52x based meters {{{ */
+       DMM_CONN(
+               "brymen-bm52x", brymen_bm52x, "Brymen", "BM52x",
+               "hid/bu86x", NULL, BRYMEN_BM52X_PACKET_SIZE, 4000, 500,
+               sr_brymen_bm52x_packet_request,
+               sr_brymen_bm52x_packet_valid, sr_brymen_bm52x_parse,
+               NULL
+       ),
+       DMM_CONN(
+               "brymen-bm82x", brymen_bm52x, "Brymen", "BM82x",
+               "hid/bu86x", NULL, BRYMEN_BM52X_PACKET_SIZE, 4000, 500,
+               sr_brymen_bm82x_packet_request,
+               sr_brymen_bm82x_packet_valid, sr_brymen_bm52x_parse,
+               NULL
+       ),
+       /* }}} */
+       /* bm85x based meters {{{ */
+       DMM_LEN(
+               "brymen-bm85x", brymen_bm85x, "Brymen", "BM85x",
+               NULL, "9600/8n1/dtr=1/rts=1",
+               BRYMEN_BM85x_PACKET_SIZE_MIN, 2000, 400,
+               NULL, NULL, /* INIT/FREE for DMM state */
+               brymen_bm85x_after_open, brymen_bm85x_packet_request,
+               brymen_bm85x_packet_valid, brymen_bm85x_parse,
+               NULL
+       ),
+       /* }}} */
+       /* bm86x based meters {{{ */
+       DMM_CONN(
+               "brymen-bm86x", brymen_bm86x, "Brymen", "BM86x",
+               "hid/bu86x", NULL, BRYMEN_BM86X_PACKET_SIZE, 500, 100,
+               sr_brymen_bm86x_packet_request,
+               sr_brymen_bm86x_packet_valid, sr_brymen_bm86x_parse,
+               NULL
+       ),
+       /* }}} */
+       /* dtm0660 based meters {{{ */
+       DMM(
+               "peaktech-3415", dtm0660,
+               "PeakTech", "3415", "2400/8n1/rts=0/dtr=1",
+               DTM0660_PACKET_SIZE, 0, 0, NULL,
+               sr_dtm0660_packet_valid, sr_dtm0660_parse, NULL
+       ),
+       DMM(
+               "velleman-dvm4100", dtm0660,
+               "Velleman", "DVM4100", "2400/8n1/rts=0/dtr=1",
+               DTM0660_PACKET_SIZE, 0, 0, NULL,
+               sr_dtm0660_packet_valid, sr_dtm0660_parse, NULL
+       ),
+       /* }}} */
+       /* eev121gw based meters {{{ */
+       DMM(
+               "eevblog-121gw", eev121gw, "EEVblog", "121GW",
+               "115200/8n1", EEV121GW_PACKET_SIZE, 0, 0, NULL,
+               sr_eev121gw_packet_valid, sr_eev121gw_3displays_parse, NULL
+       ),
+       /* }}} */
+       /* es519xx based meters {{{ */
+       DMM(
+               "iso-tech-idm103n", es519xx,
+               "ISO-TECH", "IDM103N", "2400/7o1/rts=0/dtr=1",
+               ES519XX_11B_PACKET_SIZE, 0, 0, NULL,
+               sr_es519xx_2400_11b_packet_valid, sr_es519xx_2400_11b_parse,
+               NULL
+       ),
+       /*
+        * Note: ES51922 and ES51986 baudrate is actually 19230. This is
+        * "out" by .15%, and so is well within the typical 1% margin
+        * that is considered acceptable in UART communication, and thus
+        * should not cause an issue.
+        *
+        * However, using 19230 as baudrate here will not work, as most DMM
+        * cables do not support that baudrate!
+        */
+       DMM(
+               "tenma-72-7750-ser", es519xx,
+               "Tenma", "72-7750 (UT-D02 cable)", "19200/7o1/rts=0/dtr=1",
+               ES519XX_11B_PACKET_SIZE, 0, 0, NULL,
+               sr_es519xx_19200_11b_packet_valid, sr_es519xx_19200_11b_parse,
+               NULL
+       ),
+       DMM(
+               "uni-t-ut60g-ser", es519xx,
+               "UNI-T", "UT60G (UT-D02 cable)", "19200/7o1/rts=0/dtr=1",
+               ES519XX_11B_PACKET_SIZE, 0, 0, NULL,
+               sr_es519xx_19200_11b_packet_valid, sr_es519xx_19200_11b_parse,
+               NULL
+       ),
+       DMM(
+               "uni-t-ut61e-ser", es519xx,
+               "UNI-T", "UT61E (UT-D02 cable)", "19200/7o1/rts=0/dtr=1",
+               ES519XX_14B_PACKET_SIZE, 0, 0, NULL,
+               sr_es519xx_19200_14b_packet_valid, sr_es519xx_19200_14b_parse,
+               NULL
+       ),
+       /* }}} */
+       /* fs9721 based meters {{{ */
+       DMM(
+               "digitek-dt4000zc", fs9721,
+               "Digitek", "DT4000ZC", "2400/8n1/dtr=1",
+               FS9721_PACKET_SIZE, 0, 0, NULL,
+               sr_fs9721_packet_valid, sr_fs9721_parse,
+               sr_fs9721_10_temp_c
+       ),
+       DMM(
+               "mastech-ms8250b", fs9721,
+               "MASTECH", "MS8250B", "2400/8n1/rts=0/dtr=1",
+               FS9721_PACKET_SIZE, 0, 0, NULL,
+               sr_fs9721_packet_valid, sr_fs9721_parse,
+               NULL
+       ),
+       DMM(
+               "pce-pce-dm32", fs9721,
+               "PCE", "PCE-DM32", "2400/8n1",
+               FS9721_PACKET_SIZE, 0, 0, NULL,
+               sr_fs9721_packet_valid, sr_fs9721_parse,
+               sr_fs9721_01_10_temp_f_c
+       ),
+       DMM(
+               "peaktech-3330", fs9721,
+               "PeakTech", "3330", "2400/8n1/dtr=1",
+               FS9721_PACKET_SIZE, 0, 0, NULL,
+               sr_fs9721_packet_valid, sr_fs9721_parse,
+               sr_fs9721_01_10_temp_f_c
+       ),
+       DMM(
+               "tecpel-dmm-8061-ser", fs9721,
+               "Tecpel", "DMM-8061 (UT-D02 cable)", "2400/8n1/rts=0/dtr=1",
+               FS9721_PACKET_SIZE, 0, 0, NULL,
+               sr_fs9721_packet_valid, sr_fs9721_parse,
+               sr_fs9721_00_temp_c
+       ),
+       DMM(
+               "tekpower-tp4000ZC", fs9721,
+               "TekPower", "TP4000ZC", "2400/8n1/dtr=1",
+               FS9721_PACKET_SIZE, 0, 0, NULL,
+               sr_fs9721_packet_valid, sr_fs9721_parse,
+               sr_fs9721_10_temp_c
+       ),
+       DMM(
+               "tenma-72-7745-ser", fs9721,
+               "Tenma", "72-7745 (UT-D02 cable)", "2400/8n1/rts=0/dtr=1",
+               FS9721_PACKET_SIZE, 0, 0, NULL,
+               sr_fs9721_packet_valid, sr_fs9721_parse,
+               sr_fs9721_00_temp_c
+       ),
+       DMM(
+               "uni-t-ut60a-ser", fs9721,
+               "UNI-T", "UT60A (UT-D02 cable)", "2400/8n1/rts=0/dtr=1",
+               FS9721_PACKET_SIZE, 0, 0, NULL,
+               sr_fs9721_packet_valid, sr_fs9721_parse,
+               NULL
+       ),
+       DMM(
+               "uni-t-ut60e-ser", fs9721,
+               "UNI-T", "UT60E (UT-D02 cable)", "2400/8n1/rts=0/dtr=1",
+               FS9721_PACKET_SIZE, 0, 0, NULL,
+               sr_fs9721_packet_valid, sr_fs9721_parse,
+               sr_fs9721_00_temp_c
+       ),
+       DMM(
+               "va-va18b", fs9721,
+               "V&A", "VA18B", "2400/8n1",
+               FS9721_PACKET_SIZE, 0, 0, NULL,
+               sr_fs9721_packet_valid, sr_fs9721_parse,
+               sr_fs9721_01_temp_c
+       ),
+       DMM(
+               "va-va40b", fs9721,
+               "V&A", "VA40B", "2400/8n1",
+               FS9721_PACKET_SIZE, 0, 0, NULL,
+               sr_fs9721_packet_valid, sr_fs9721_parse,
+               sr_fs9721_max_c_min
+       ),
+       DMM(
+               "voltcraft-vc820-ser", fs9721,
+               "Voltcraft", "VC-820 (UT-D02 cable)", "2400/8n1/rts=0/dtr=1",
+               FS9721_PACKET_SIZE, 0, 0, NULL,
+               sr_fs9721_packet_valid, sr_fs9721_parse,
+               NULL
+       ),
+       DMM(
+               "voltcraft-vc840-ser", fs9721,
+               "Voltcraft", "VC-840 (UT-D02 cable)", "2400/8n1/rts=0/dtr=1",
+               FS9721_PACKET_SIZE, 0, 0, NULL,
+               sr_fs9721_packet_valid, sr_fs9721_parse,
+               sr_fs9721_00_temp_c
+       ),
+       /* }}} */
+       /* fs9922 based meters {{{ */
+       DMM(
+               "gwinstek-gdm-397", fs9922,
+               "GW Instek", "GDM-397", "2400/8n1/rts=0/dtr=1",
+               FS9922_PACKET_SIZE, 0, 0, NULL,
+               sr_fs9922_packet_valid, sr_fs9922_parse, NULL
+       ),
+       DMM(
+               "peaktech-2025", fs9922,
+               "PeakTech", "2025", "2400/8n1/rts=0/dtr=1",
+               FS9922_PACKET_SIZE, 0, 0, NULL,
+               sr_fs9922_packet_valid, sr_fs9922_parse, NULL
+       ),
+       DMM(
+               "sparkfun-70c", fs9922,
+               "SparkFun", "70C", "2400/8n1/rts=0/dtr=1",
+               FS9922_PACKET_SIZE, 0, 0, NULL,
+               sr_fs9922_packet_valid, sr_fs9922_parse, NULL
+       ),
+       DMM(
+               "uni-t-ut61b-ser", fs9922,
+               "UNI-T", "UT61B (UT-D02 cable)", "2400/8n1/rts=0/dtr=1",
+               FS9922_PACKET_SIZE, 0, 0, NULL,
+               sr_fs9922_packet_valid, sr_fs9922_parse, NULL
+       ),
+       DMM(
+               "uni-t-ut61c-ser", fs9922,
+               "UNI-T", "UT61C (UT-D02 cable)", "2400/8n1/rts=0/dtr=1",
+               FS9922_PACKET_SIZE, 0, 0, NULL,
+               sr_fs9922_packet_valid, sr_fs9922_parse, NULL
+       ),
+       DMM(
+               "uni-t-ut61d-ser", fs9922,
+               "UNI-T", "UT61D (UT-D02 cable)", "2400/8n1/rts=0/dtr=1",
+               FS9922_PACKET_SIZE, 0, 0, NULL,
+               sr_fs9922_packet_valid, sr_fs9922_parse, NULL
+       ),
+       DMM_CONN(
+               "victor-dmm", fs9922, "Victor", "Victor DMMs",
+               "hid/victor", "2400/8n1", FS9922_PACKET_SIZE, 0, 0, NULL,
+               sr_fs9922_packet_valid, sr_fs9922_parse, NULL
+       ),
+       DMM(
+               /*
+                * Note: The VC830 doesn't set the 'volt' and 'diode' bits of
+                * the FS9922 protocol. Instead, it only sets the user-defined
+                * bit "z1" to indicate "diode mode" and "voltage".
+                */
+               "voltcraft-vc830-ser", fs9922,
+               "Voltcraft", "VC-830 (UT-D02 cable)", "2400/8n1/rts=0/dtr=1",
+               FS9922_PACKET_SIZE, 0, 0, NULL,
+               sr_fs9922_packet_valid, sr_fs9922_parse,
+               &sr_fs9922_z1_diode
+       ),
+       /* }}} */
+       /* m2110 based meters {{{ */
+       DMM(
+               "bbcgm-2010", m2110,
+               "BBC Goertz Metrawatt", "M2110", "1200/7n2",
+               BBCGM_M2110_PACKET_SIZE, 0, 0, NULL,
+               sr_m2110_packet_valid, sr_m2110_parse,
+               NULL
+       ),
+       /* }}} */
+       /* meterman_38xr based meters {{{ */
+       DMM(
+               "meterman-38xr", meterman_38xr,
+               "Meterman", "38XR", "9600/8n1/rts=0/dtr=1",
+               METERMAN_38XR_PACKET_SIZE, 0, 0, NULL,
+               meterman_38xr_packet_valid, meterman_38xr_parse,
+               NULL
+       ),
+       /* }}} */
+       /* metex14 based meters {{{ */
+       DMM(
+               "mastech-mas345", metex14,
+               "MASTECH", "MAS345", "600/7n2/rts=0/dtr=1",
+               METEX14_PACKET_SIZE, 0, 0, sr_metex14_packet_request,
+               sr_metex14_packet_valid, sr_metex14_parse,
+               NULL
+       ),
+       DMM(
+               "metex-m3640d", metex14,
+               "Metex", "M-3640D", "1200/7n2/rts=0/dtr=1",
+               METEX14_PACKET_SIZE, 0, 0, sr_metex14_packet_request,
+               sr_metex14_packet_valid, sr_metex14_parse,
+               NULL
+       ),
+       DMM(
+               "metex-m3860m", metex14,
+               "Metex", "M-3860M", "9600/7n2/rts=0/dtr=1",
+               4 * METEX14_PACKET_SIZE, 0, 0, sr_metex14_packet_request,
+               sr_metex14_4packets_valid, sr_metex14_4packets_parse,
+               NULL
+       ),
+       DMM(
+               "metex-m4650cr", metex14,
+               "Metex", "M-4650CR", "1200/7n2/rts=0/dtr=1",
+               METEX14_PACKET_SIZE, 0, 0, sr_metex14_packet_request,
+               sr_metex14_packet_valid, sr_metex14_parse,
+               NULL
+       ),
+       DMM(
+               "metex-me21", metex14,
+               "Metex", "ME-21", "2400/7n2/rts=0/dtr=1",
+               METEX14_PACKET_SIZE, 0, 0, sr_metex14_packet_request,
+               sr_metex14_packet_valid, sr_metex14_parse,
+               NULL
+       ),
+       DMM(
+               "metex-me31", metex14,
+               "Metex", "ME-31", "600/7n2/rts=0/dtr=1",
+               METEX14_PACKET_SIZE, 0, 0, sr_metex14_packet_request,
+               sr_metex14_packet_valid, sr_metex14_parse,
+               NULL
+       ),
+       DMM(
+               "peaktech-3410", metex14,
+               "PeakTech", "3410", "600/7n2/rts=0/dtr=1",
+               METEX14_PACKET_SIZE, 0, 0, sr_metex14_packet_request,
+               sr_metex14_packet_valid, sr_metex14_parse,
+               NULL
+       ),
+       DMM(
+               "peaktech-4370", metex14,
+               "PeakTech", "4370", "1200/7n2/rts=0/dtr=1",
+               METEX14_PACKET_SIZE, 0, 0, sr_metex14_packet_request,
+               sr_metex14_packet_valid, sr_metex14_parse,
+               NULL
+       ),
+       DMM(
+               "peaktech-4390a", metex14,
+               "PeakTech", "4390A", "9600/7n2/rts=0/dtr=1",
+               4 * METEX14_PACKET_SIZE, 0, 0, sr_metex14_packet_request,
+               sr_metex14_4packets_valid, sr_metex14_4packets_parse,
+               NULL
+       ),
+       DMM(
+               "radioshack-22-168", metex14,
+               "RadioShack", "22-168", "1200/7n2/rts=0/dtr=1",
+               METEX14_PACKET_SIZE, 0, 0, sr_metex14_packet_request,
+               sr_metex14_packet_valid, sr_metex14_parse,
+               NULL
+       ),
+       DMM(
+               "radioshack-22-805", metex14,
+               "RadioShack", "22-805", "600/7n2/rts=0/dtr=1",
+               METEX14_PACKET_SIZE, 0, 0, sr_metex14_packet_request,
+               sr_metex14_packet_valid, sr_metex14_parse,
+               NULL
+       ),
+       DMM(
+               "voltcraft-m3650cr", metex14,
+               "Voltcraft", "M-3650CR", "1200/7n2/rts=0/dtr=1",
+               METEX14_PACKET_SIZE, 150, 20, sr_metex14_packet_request,
+               sr_metex14_packet_valid, sr_metex14_parse,
+               NULL
+       ),
+       DMM(
+               "voltcraft-m3650d", metex14,
+               "Voltcraft", "M-3650D", "1200/7n2/rts=0/dtr=1",
+               METEX14_PACKET_SIZE, 0, 0, sr_metex14_packet_request,
+               sr_metex14_packet_valid, sr_metex14_parse,
+               NULL
+       ),
+       DMM(
+               "voltcraft-m4650cr", metex14,
+               "Voltcraft", "M-4650CR", "1200/7n2/rts=0/dtr=1",
+               METEX14_PACKET_SIZE, 0, 0, sr_metex14_packet_request,
+               sr_metex14_packet_valid, sr_metex14_parse,
+               NULL
+       ),
+       DMM(
+               "voltcraft-me42", metex14,
+               "Voltcraft", "ME-42", "600/7n2/rts=0/dtr=1",
+               METEX14_PACKET_SIZE, 250, 60, sr_metex14_packet_request,
+               sr_metex14_packet_valid, sr_metex14_parse,
+               NULL
+       ),
+       /* }}} */
+       /* ms2115b based meters {{{ */
+       DMM(
+               "mastech-ms2115b", ms2115b,
+               "MASTECH", "MS2115B", "1200/8n1",
+               MS2115B_PACKET_SIZE, 0, 0, NULL,
+               sr_ms2115b_packet_valid, sr_ms2115b_parse,
+               NULL
+       ),
+       /* }}} */
+       /* ms8250d based meters {{{ */
+       DMM(
+               "mastech-ms8250d", ms8250d,
+               "MASTECH", "MS8250D", "2400/8n1/rts=0/dtr=1",
+               MS8250D_PACKET_SIZE, 0, 0, NULL,
+               sr_ms8250d_packet_valid, sr_ms8250d_parse,
+               NULL
+       ),
+       /* }}} */
+       /* rs9lcd based meters {{{ */
+       DMM(
+               "radioshack-22-812", rs9lcd,
+               "RadioShack", "22-812", "4800/8n1/rts=0/dtr=1",
+               RS9LCD_PACKET_SIZE, 0, 0, NULL,
+               sr_rs9lcd_packet_valid, sr_rs9lcd_parse,
+               NULL
+       ),
+       /* }}} */
+       /* ut71x based meters {{{ */
+       DMM(
+               "tenma-72-7730-ser", ut71x,
+               "Tenma", "72-7730 (UT-D02 cable)", "2400/7o1/rts=0/dtr=1",
+               UT71X_PACKET_SIZE, 0, 0, NULL,
+               sr_ut71x_packet_valid, sr_ut71x_parse, NULL
+       ),
+       DMM(
+               "tenma-72-7732-ser", ut71x,
+               "Tenma", "72-7732 (UT-D02 cable)", "2400/7o1/rts=0/dtr=1",
+               UT71X_PACKET_SIZE, 0, 0, NULL,
+               sr_ut71x_packet_valid, sr_ut71x_parse, NULL
+       ),
+       DMM(
+               "tenma-72-9380a-ser", ut71x,
+               "Tenma", "72-9380A (UT-D02 cable)", "2400/7o1/rts=0/dtr=1",
+               UT71X_PACKET_SIZE, 0, 0, NULL,
+               sr_ut71x_packet_valid, sr_ut71x_parse, NULL
+       ),
+       DMM(
+               "uni-t-ut71a-ser", ut71x,
+               "UNI-T", "UT71A (UT-D02 cable)", "2400/7o1/rts=0/dtr=1",
+               UT71X_PACKET_SIZE, 0, 0, NULL,
+               sr_ut71x_packet_valid, sr_ut71x_parse, NULL
+       ),
+       DMM(
+               "uni-t-ut71b-ser", ut71x,
+               "UNI-T", "UT71B (UT-D02 cable)", "2400/7o1/rts=0/dtr=1",
+               UT71X_PACKET_SIZE, 0, 0, NULL,
+               sr_ut71x_packet_valid, sr_ut71x_parse, NULL
+       ),
+       DMM(
+               "uni-t-ut71c-ser", ut71x,
+               "UNI-T", "UT71C (UT-D02 cable)", "2400/7o1/rts=0/dtr=1",
+               UT71X_PACKET_SIZE, 0, 0, NULL,
+               sr_ut71x_packet_valid, sr_ut71x_parse, NULL
+       ),
+       DMM(
+               "uni-t-ut71d-ser", ut71x,
+               "UNI-T", "UT71D (UT-D02 cable)", "2400/7o1/rts=0/dtr=1",
+               UT71X_PACKET_SIZE, 0, 0, NULL,
+               sr_ut71x_packet_valid, sr_ut71x_parse, NULL
+       ),
+       DMM(
+               "uni-t-ut71e-ser", ut71x,
+               "UNI-T", "UT71E (UT-D02 cable)", "2400/7o1/rts=0/dtr=1",
+               UT71X_PACKET_SIZE, 0, 0, NULL,
+               sr_ut71x_packet_valid, sr_ut71x_parse, NULL
+       ),
+       DMM(
+               "uni-t-ut804-ser", ut71x,
+               "UNI-T", "UT804", "2400/7o1/rts=0/dtr=1",
+               UT71X_PACKET_SIZE, 0, 0, NULL,
+               sr_ut71x_packet_valid, sr_ut71x_parse, NULL
+       ),
+       DMM(
+               "voltcraft-vc920-ser", ut71x,
+               "Voltcraft", "VC-920 (UT-D02 cable)", "2400/7o1/rts=0/dtr=1",
+               UT71X_PACKET_SIZE, 0, 0, NULL,
+               sr_ut71x_packet_valid, sr_ut71x_parse, NULL
+       ),
+       DMM(
+               "voltcraft-vc940-ser", ut71x,
+               "Voltcraft", "VC-940 (UT-D02 cable)", "2400/7o1/rts=0/dtr=1",
+               UT71X_PACKET_SIZE, 0, 0, NULL,
+               sr_ut71x_packet_valid, sr_ut71x_parse, NULL
+       ),
+       DMM(
+               "voltcraft-vc960-ser", ut71x,
+               "Voltcraft", "VC-960 (UT-D02 cable)", "2400/7o1/rts=0/dtr=1",
+               UT71X_PACKET_SIZE, 0, 0, NULL,
+               sr_ut71x_packet_valid, sr_ut71x_parse, NULL
+       ),
+       /* }}} */
+       /* vc870 based meters {{{ */
+       DMM(
+               "voltcraft-vc870-ser", vc870,
+               "Voltcraft", "VC-870 (UT-D02 cable)", "9600/8n1/rts=0/dtr=1",
+               VC870_PACKET_SIZE, 0, 0, NULL,
+               sr_vc870_packet_valid, sr_vc870_parse, NULL
+       ),
+       /* }}} */
+       /* vc96 based meters {{{ */
+       DMM(
+               "voltcraft-vc96", vc96,
+               "Voltcraft", "VC-96", "1200/8n2",
+               VC96_PACKET_SIZE, 0, 0, NULL,
+               sr_vc96_packet_valid, sr_vc96_parse,
+               NULL
+       ),
+       /* }}} */
+       /*
+        * The list is sorted. Add new items in the respective chip's group.
+        */
+);