#include <glib.h>
#include "libsigrok.h"
#include "libsigrok-internal.h"
-#include "config.h"
+#include "fluke-dmm.h"
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <string.h>
+#include <errno.h>
+
+static const int hwopts[] = {
+ SR_HWOPT_CONN,
+ SR_HWOPT_SERIALCOMM,
+ 0,
+};
+
+static const int hwcaps[] = {
+ SR_HWCAP_MULTIMETER,
+ SR_HWCAP_LIMIT_SAMPLES,
+ SR_HWCAP_LIMIT_MSEC,
+ SR_HWCAP_CONTINUOUS,
+ 0,
+};
+
+static const char *probe_names[] = {
+ "Probe",
+ NULL,
+};
+SR_PRIV struct sr_dev_driver flukedmm_driver_info;
+static struct sr_dev_driver *di = &flukedmm_driver_info;
-SR_PRIV struct sr_dev_driver driver_info;
-static struct sr_dev_driver *di = &driver_info;
+static const struct flukedmm_profile supported_flukedmm[] = {
+ { FLUKE_187, "187", 100 },
+ { FLUKE_287, "287", 100 },
+};
-/* TODO move to header file */
-struct drv_context { GSList *instances; };
-struct dev_context { };
/* Properly close and free all devices. */
static int clear_instances(void)
struct dev_context *devc;
GSList *l;
+ if (!(drvc = di->priv))
+ return SR_OK;
+
drvc = di->priv;
for (l = drvc->instances; l; l = l->next) {
- if (!(sdi = l->data)) {
- /* Log error, but continue cleaning up the rest. */
- sr_err("TODO: %s: sdi was NULL, continuing", __func__);
+ if (!(sdi = l->data))
continue;
- }
- if (!(devc = sdi->priv)) {
- /* Log error, but continue cleaning up the rest. */
- sr_err("TODO: %s: sdi->priv was NULL, continuing", __func__);
+ if (!(devc = sdi->priv))
continue;
- }
-
- /* TODO */
-
+ sr_serial_dev_inst_free(devc->serial);
sr_dev_inst_free(sdi);
}
-
g_slist_free(drvc->instances);
drvc->instances = NULL;
struct drv_context *drvc;
if (!(drvc = g_try_malloc0(sizeof(struct drv_context)))) {
- sr_err("TODO: driver context malloc failed.");
+ sr_err("fluke-dmm: driver context malloc failed.");
return SR_ERR;
}
- /* TODO */
-
di->priv = drvc;
return SR_OK;
}
-static GSList *hw_scan(GSList *options)
+static int serial_readline(int fd, char **buf, int *buflen, uint64_t timeout_ms)
+{
+ uint64_t start;
+ int maxlen, len;
+
+ timeout_ms *= 1000;
+ start = g_get_monotonic_time();
+
+ maxlen = *buflen;
+ *buflen = len = 0;
+ while(1) {
+ len = maxlen - *buflen - 1;
+ if (len < 1)
+ break;
+ len = serial_read(fd, *buf + *buflen, 1);
+ if (len > 0) {
+ *buflen += len;
+ *(*buf + *buflen) = '\0';
+ if (*buflen > 0 && *(*buf + *buflen - 1) == '\r') {
+ /* Strip LF and terminate. */
+ *(*buf + --*buflen) = '\0';
+ break;
+ }
+ }
+ if (g_get_monotonic_time() - start > timeout_ms)
+ /* Timeout */
+ break;
+ g_usleep(2000);
+ }
+ sr_dbg("fluke-dmm: received %d: '%s'", *buflen, *buf);
+
+ return SR_OK;
+}
+
+static GSList *fluke_scan(const char *conn, const char *serialcomm)
{
+ struct sr_dev_inst *sdi;
struct drv_context *drvc;
+ struct dev_context *devc;
+ struct sr_probe *probe;
GSList *devices;
+ int fd, retry, len, i, s;
+ char buf[128], *b, **tokens;
+
+ if ((fd = serial_open(conn, O_RDWR|O_NONBLOCK)) == -1) {
+ sr_err("fluke-dmm: unable to open %s: %s", conn, strerror(errno));
+ return NULL;
+ }
+ if (serial_set_paramstr(fd, serialcomm) != SR_OK) {
+ sr_err("fluke-dmm: unable to set serial parameters");
+ return NULL;
+ }
- (void)options;
- devices = NULL;
drvc = di->priv;
- drvc->instances = NULL;
+ b = buf;
+ retry = 0;
+ devices = NULL;
+ /* We'll try the discovery sequence three times in case the device
+ * is not in an idle state when we send ID. */
+ while (!devices && retry < 3) {
+ retry++;
+ serial_flush(fd);
+ if (serial_write(fd, "ID\r", 3) == -1) {
+ sr_err("fluke-dmm: unable to send ID string: %s",
+ strerror(errno));
+ continue;
+ }
+
+ /* Response is first a CMD_ACK byte (ASCII '0' for OK,
+ * or '1' to signify an error. */
+ len = 128;
+ serial_readline(fd, &b, &len, 150);
+ if (len != 1)
+ continue;
+ if (buf[0] != '0')
+ continue;
+
+ /* If CMD_ACK was OK, ID string follows. */
+ len = 128;
+ serial_readline(fd, &b, &len, 150);
+ if (len < 10)
+ continue;
+ tokens = g_strsplit(buf, ",", 3);
+ if (!strncmp("FLUKE", tokens[0], 5)
+ && tokens[1] && tokens[2]) {
+ for (i = 0; supported_flukedmm[i].model; i++) {
+ if (strcmp(supported_flukedmm[i].modelname, tokens[0] + 6))
+ continue;
+ /* Skip leading spaces in version number. */
+ for (s = 0; tokens[1][s] == ' '; s++);
+ if (!(sdi = sr_dev_inst_new(0, SR_ST_INACTIVE, "Fluke",
+ tokens[0] + 6, tokens[1] + s)))
+ return NULL;
+ if (!(devc = g_try_malloc0(sizeof(struct dev_context)))) {
+ sr_dbg("fluke-dmm: failed to malloc devc");
+ return NULL;
+ }
+ devc->profile = &supported_flukedmm[i];
+ devc->serial = sr_serial_dev_inst_new(conn, -1);
+ devc->serialcomm = g_strdup(serialcomm);
+ sdi->priv = devc;
+ sdi->driver = di;
+ if (!(probe = sr_probe_new(0, SR_PROBE_ANALOG, TRUE, "P1")))
+ return NULL;
+ sdi->probes = g_slist_append(sdi->probes, probe);
+ drvc->instances = g_slist_append(drvc->instances, sdi);
+ devices = g_slist_append(devices, sdi);
+ break;
+ }
+ }
+ g_strfreev(tokens);
+ }
+ serial_close(fd);
+
+ return devices;
+}
- /* TODO */
+static GSList *hw_scan(GSList *options)
+{
+ struct sr_hwopt *opt;
+ GSList *l, *devices;
+ const char *conn, *serialcomm;
+
+ conn = serialcomm = NULL;
+ for (l = options; l; l = l->next) {
+ opt = l->data;
+ switch (opt->hwopt) {
+ case SR_HWOPT_CONN:
+ conn = opt->value;
+ break;
+ case SR_HWOPT_SERIALCOMM:
+ serialcomm = opt->value;
+ break;
+ }
+ }
+ if (!conn)
+ return NULL;
+
+ if (serialcomm) {
+ /* Use the provided comm specs. */
+ devices = fluke_scan(conn, serialcomm);
+ } else {
+ /* Try 115200, as used on 287/289. */
+ devices = fluke_scan(conn, "115200/8n1");
+ if (!devices)
+ /* Fall back to 9600 for 187/189. */
+ devices = fluke_scan(conn, "9600/8n1");
+ }
return devices;
}
static int hw_dev_open(struct sr_dev_inst *sdi)
{
+ struct dev_context *devc;
- /* TODO */
+ if (!(devc = sdi->priv)) {
+ sr_err("fluke-dmm: sdi->priv was NULL.");
+ return SR_ERR_BUG;
+ }
+
+ devc->serial->fd = serial_open(devc->serial->port, O_RDWR | O_NONBLOCK);
+ if (devc->serial->fd == -1) {
+ sr_err("fluke-dmm: Couldn't open serial port '%s'.",
+ devc->serial->port);
+ return SR_ERR;
+ }
+ if (serial_set_paramstr(devc->serial->fd, devc->serialcomm) != SR_OK) {
+ sr_err("fluke-dmm: unable to set serial parameters");
+ return SR_ERR;
+ }
+ sdi->status = SR_ST_ACTIVE;
return SR_OK;
}
static int hw_dev_close(struct sr_dev_inst *sdi)
{
+ struct dev_context *devc;
+
+ if (!(devc = sdi->priv)) {
+ sr_err("fluke-dmm: sdi->priv was NULL.");
+ return SR_ERR_BUG;
+ }
- /* TODO */
+ if (devc->serial && devc->serial->fd != -1) {
+ serial_close(devc->serial->fd);
+ devc->serial->fd = -1;
+ sdi->status = SR_ST_INACTIVE;
+ }
return SR_OK;
}
clear_instances();
- /* TODO */
-
return SR_OK;
}
const struct sr_dev_inst *sdi)
{
+ (void)sdi;
switch (info_id) {
- /* TODO */
+ case SR_DI_HWOPTS:
+ *data = hwopts;
+ break;
+ case SR_DI_HWCAPS:
+ *data = hwcaps;
+ break;
+ case SR_DI_NUM_PROBES:
+ *data = GINT_TO_POINTER(1);
+ break;
+ case SR_DI_PROBE_NAMES:
+ *data = probe_names;
+ break;
default:
return SR_ERR_ARG;
}
static int hw_dev_config_set(const struct sr_dev_inst *sdi, int hwcap,
const void *value)
{
- int ret;
+ struct dev_context *devc;
if (sdi->status != SR_ST_ACTIVE)
return SR_ERR;
- ret = SR_OK;
+ if (!(devc = sdi->priv)) {
+ sr_err("fluke-dmm: sdi->priv was NULL.");
+ return SR_ERR_BUG;
+ }
+
switch (hwcap) {
- /* TODO */
+ case SR_HWCAP_LIMIT_MSEC:
+ /* TODO: not yet implemented */
+ if (*(const uint64_t *)value == 0) {
+ sr_err("fluke-dmm: LIMIT_MSEC can't be 0.");
+ return SR_ERR;
+ }
+ devc->limit_msec = *(const uint64_t *)value;
+ sr_dbg("fluke-dmm: Setting time limit to %" PRIu64 "ms.",
+ devc->limit_msec);
+ break;
+ case SR_HWCAP_LIMIT_SAMPLES:
+ devc->limit_samples = *(const uint64_t *)value;
+ sr_dbg("fluke-dmm: Setting sample limit to %" PRIu64 ".",
+ devc->limit_samples);
+ break;
default:
- ret = SR_ERR_ARG;
+ sr_err("fluke-dmm: Unknown capability: %d.", hwcap);
+ return SR_ERR;
+ break;
}
- return ret;
+ return SR_OK;
}
static int hw_dev_acquisition_start(const struct sr_dev_inst *sdi,
void *cb_data)
{
+ struct sr_datafeed_packet packet;
+ struct sr_datafeed_header header;
+ struct sr_datafeed_meta_analog meta;
+ struct dev_context *devc;
+
+ if (!(devc = sdi->priv)) {
+ sr_err("fluke-dmm: sdi->priv was NULL.");
+ return SR_ERR_BUG;
+ }
+
+ sr_dbg("fluke-dmm: Starting acquisition.");
+
+ devc->cb_data = cb_data;
+
+ /* Send header packet to the session bus. */
+ sr_dbg("fluke-dmm: Sending SR_DF_HEADER.");
+ packet.type = SR_DF_HEADER;
+ packet.payload = (uint8_t *)&header;
+ header.feed_version = 1;
+ gettimeofday(&header.starttime, NULL);
+ sr_session_send(devc->cb_data, &packet);
- /* TODO */
+ /* Send metadata about the SR_DF_ANALOG packets to come. */
+ sr_dbg("fluke-dmm: Sending SR_DF_META_ANALOG.");
+ packet.type = SR_DF_META_ANALOG;
+ packet.payload = &meta;
+ meta.num_probes = 1;
+ sr_session_send(devc->cb_data, &packet);
+
+ /* Poll every 100ms, or whenever some data comes in. */
+ sr_source_add(devc->serial->fd, G_IO_IN, 50, fluke_receive_data, (void *)sdi);
+
+ if (serial_write(devc->serial->fd, "QM\r", 3) == -1) {
+ sr_err("fluke-dmm: unable to send QM: %s", strerror(errno));
+ return SR_ERR;
+ }
+ devc->cmd_sent_at = g_get_monotonic_time() / 1000;
+ devc->expect_response = TRUE;
return SR_OK;
}
static int hw_dev_acquisition_stop(const struct sr_dev_inst *sdi,
void *cb_data)
{
-
- (void)cb_data;
+ struct sr_datafeed_packet packet;
+ struct dev_context *devc;
if (sdi->status != SR_ST_ACTIVE)
return SR_ERR;
- /* TODO */
+ if (!(devc = sdi->priv)) {
+ sr_err("fluke-dmm: sdi->priv was NULL.");
+ return SR_ERR_BUG;
+ }
+
+ sr_dbg("fluke-dmm: Stopping acquisition.");
+
+ sr_source_remove(devc->serial->fd);
+ hw_dev_close((struct sr_dev_inst *)sdi);
+
+ /* Send end packet to the session bus. */
+ sr_dbg("fluke-dmm: Sending SR_DF_END.");
+ packet.type = SR_DF_END;
+ sr_session_send(cb_data, &packet);
return SR_OK;
}
-SR_PRIV struct sr_dev_driver driver_info = {
+SR_PRIV struct sr_dev_driver flukedmm_driver_info = {
.name = "fluke-dmm",
.longname = "Fluke 18x/28x series DMMs",
.api_version = 1,
projects / libsigrok.git / blobdiff