* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
+#include <fcntl.h>
#include <glib.h>
#include "libsigrok.h"
#include "libsigrok-internal.h"
#include "protocol.h"
+static const int hwopts[] = {
+ SR_HWOPT_CONN,
+ SR_HWOPT_SERIALCOMM,
+ 0,
+};
+
+static const int hwcaps[] = {
+ SR_HWCAP_SOUNDLEVELMETER,
+ SR_HWCAP_LIMIT_SAMPLES,
+ SR_HWCAP_CONTINUOUS,
+ 0,
+};
+
+static const char *probe_names[] = {
+ "P1",
+ NULL,
+};
+
SR_PRIV struct sr_dev_driver tondaj_sl_814_driver_info;
static struct sr_dev_driver *di = &tondaj_sl_814_driver_info;
continue;
if (!(devc = sdi->priv))
continue;
-
- /* TODO */
-
+ sr_serial_dev_inst_free(devc->serial);
sr_dev_inst_free(sdi);
}
return SR_ERR_MALLOC;
}
- /* TODO */
-
di->priv = drvc;
return SR_OK;
static GSList *hw_scan(GSList *options)
{
struct drv_context *drvc;
- GSList *devices;
-
- (void)options;
+ struct dev_context *devc;
+ struct sr_dev_inst *sdi;
+ struct sr_hwopt *opt;
+ struct sr_probe *probe;
+ GSList *devices, *l;
+ const char *conn, *serialcomm;
devices = NULL;
drvc = di->priv;
drvc->instances = NULL;
- /* TODO */
+ conn = serialcomm = NULL;
+ for (l = options; l; l = l->next) {
+ if (!(opt = l->data)) {
+ sr_err("Invalid option data, skipping.");
+ continue;
+ }
+ switch (opt->hwopt) {
+ case SR_HWOPT_CONN:
+ conn = opt->value;
+ break;
+ case SR_HWOPT_SERIALCOMM:
+ serialcomm = opt->value;
+ break;
+ default:
+ sr_err("Unknown option %d, skipping.", opt->hwopt);
+ break;
+ }
+ }
+ if (!conn) {
+ sr_dbg("Couldn't determine connection options.");
+ return NULL;
+ }
+
+ if (!(sdi = sr_dev_inst_new(0, SR_ST_INACTIVE, "Tondaj",
+ "SL-814", NULL))) {
+ sr_err("Failed to create device instance.");
+ return NULL;
+ }
+
+ if (!(devc = g_try_malloc0(sizeof(struct dev_context)))) {
+ sr_err("Device context malloc failed.");
+ return NULL;
+ }
+
+ if (!serialcomm)
+ serialcomm = "9600/8e1";
+
+ if (!(devc->serial = sr_serial_dev_inst_new(conn, -1))) {
+ sr_err("Failed to create serial device instance.");
+ return NULL;
+ }
+ devc->serialcomm = g_strdup(serialcomm);
+ sdi->priv = devc;
+ sdi->driver = di;
+ probe = sr_probe_new(0, SR_PROBE_ANALOG, TRUE, probe_names[0]);
+ if (!probe) {
+ sr_err("Failed to create probe.");
+ return NULL;
+ }
+ sdi->probes = g_slist_append(sdi->probes, probe);
+ drvc->instances = g_slist_append(drvc->instances, sdi);
+ devices = g_slist_append(devices, sdi);
return devices;
}
static int hw_dev_open(struct sr_dev_inst *sdi)
{
- /* TODO */
+ int ret;
+ struct dev_context *devc;
+
+ devc = sdi->priv;
+
+ sr_dbg("Opening '%s' with '%s'.", devc->serial->port, devc->serialcomm);
+
+ ret = serial_open(devc->serial->port, O_RDWR | O_NONBLOCK);
+ if (ret < 0) {
+ sr_err("Unable to open serial port: %d.", ret);
+ return SR_ERR;
+ }
+ devc->serial->fd = ret;
+
+ ret = serial_set_paramstr(devc->serial->fd, devc->serialcomm);
+ if (ret < 0) {
+ sr_err("Unable to set serial parameters: %d.", ret);
+ return SR_ERR;
+ }
+
+ sdi->status = SR_ST_ACTIVE;
return SR_OK;
}
static int hw_dev_close(struct sr_dev_inst *sdi)
{
- /* TODO */
+ int ret;
+ struct dev_context *devc;
+
+ devc = sdi->priv;
+
+ if (!devc->serial) {
+ sr_err("Invalid serial device instance, cannot close.");
+ return SR_ERR_BUG;
+ }
+
+ if (devc->serial->fd == -1) {
+ sr_dbg("Serial device instance FD was -1, no need to close.");
+ return SR_OK;
+ }
+
+ if ((ret = serial_close(devc->serial->fd)) < 0) {
+ sr_err("Error closing serial port: %d.", ret);
+ return SR_ERR;
+ }
+
+ devc->serial->fd = -1;
+ sdi->status = SR_ST_INACTIVE;
return SR_OK;
}
{
clear_instances();
- /* TODO */
-
return SR_OK;
}
static int hw_info_get(int info_id, const void **data,
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:
sr_err("Unknown info_id: %d.", info_id);
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) {
sr_err("Device inactive, can't set config options.");
return SR_ERR;
}
- ret = SR_OK;
+ devc = sdi->priv;
+
switch (hwcap) {
- /* TODO */
+ case SR_HWCAP_LIMIT_SAMPLES:
+ devc->limit_samples = *(const uint64_t *)value;
+ sr_dbg("Setting sample limit to %" PRIu64 ".",
+ devc->limit_samples);
+ break;
default:
sr_err("Unknown hardware capability: %d.", hwcap);
- ret = SR_ERR_ARG;
+ return SR_ERR_ARG;
}
- return ret;
+ return SR_OK;
}
static int hw_dev_acquisition_start(const struct sr_dev_inst *sdi,
void *cb_data)
{
- /* TODO */
+ struct sr_datafeed_packet packet;
+ struct sr_datafeed_header header;
+ struct sr_datafeed_meta_analog meta;
+ struct dev_context *devc;
+
+ devc = sdi->priv;
+ devc->cb_data = cb_data;
+
+ /* Send header packet to the session bus. */
+ sr_dbg("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);
+
+ /* Send metadata about the SR_DF_ANALOG packets to come. */
+ sr_dbg("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 500ms, or whenever some data comes in. */
+ sr_source_add(devc->serial->fd, G_IO_IN, 500,
+ tondaj_sl_814_receive_data, (void *)sdi);
return SR_OK;
}
-static int hw_dev_acquisition_stop(const struct sr_dev_inst *sdi,
- void *cb_data)
+static int hw_dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
{
- (void)cb_data;
+ int ret, final_ret;
+ struct sr_datafeed_packet packet;
+ struct dev_context *devc;
+
+ final_ret = SR_OK;
if (sdi->status != SR_ST_ACTIVE) {
sr_err("Device inactive, can't stop acquisition.");
return SR_ERR;
}
- /* TODO */
+ devc = sdi->priv;
- return SR_OK;
+ if ((ret = sr_source_remove(devc->serial->fd)) < 0) {
+ sr_err("Error removing source: %d.", ret);
+ final_ret = SR_ERR;
+ }
+
+ if ((ret = hw_dev_close(sdi)) < 0) {
+ sr_err("Error closing device: %d.", ret);
+ final_ret = SR_ERR;
+ }
+
+ /* Send end packet to the session bus. */
+ sr_dbg("Sending SR_DF_END.");
+ packet.type = SR_DF_END;
+ sr_session_send(cb_data, &packet);
+
+ return final_ret;
}
SR_PRIV struct sr_dev_driver tondaj_sl_814_driver_info = {
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
-#include <stdlib.h>
+#include <string.h>
#include <glib.h>
#include "libsigrok.h"
#include "libsigrok-internal.h"
#include "protocol.h"
-SR_PRIV int tondaj_sl_814_receive_data(int fd, int revents, void *cb_data)
+/* States */
+enum {
+ SEND_INIT,
+ GET_INIT_REPLY,
+ SEND_PACKET_REQUEST,
+ GET_PACKET,
+};
+
+static void parse_packet(const uint8_t *buf, float *floatval,
+ struct sr_datafeed_analog *analog)
+{
+ gboolean is_a, is_fast;
+ uint16_t intval;
+ uint8_t level = 0, level_bits;
+
+ /* Byte 0 [7:7]: 0 = A, 1 = C */
+ is_a = ((buf[0] & (1 << 7)) == 0);
+
+ /* Byte 0 [6:6]: Unknown/unused? */
+
+ /* Byte 0 [5:4]: Level (00 = 40, 01 = 60, 10 = 80, 11 = 100) */
+ level_bits = (buf[0] >> 4) & 0x03;
+ if (level_bits == 0)
+ level = 40;
+ else if (level_bits == 1)
+ level = 60;
+ else if (level_bits == 2)
+ level = 80;
+ else if (level_bits == 3)
+ level = 100;
+
+ /* Byte 0 [3:3]: 0 = fast, 1 = slow */
+ is_fast = ((buf[0] & (1 << 3)) == 0);
+
+ /* Byte 0 [2:0]: value[10..8] */
+ /* Byte 1 [7:0]: value[7..0] */
+ intval = (buf[0] & 0x7) << 8;
+ intval |= buf[1];
+
+ *floatval = (float)intval;
+
+ /* The value on the display always has one digit after the comma. */
+ *floatval /= 10;
+
+ analog->mq = SR_MQ_SOUND_PRESSURE_LEVEL;
+ analog->unit = SR_UNIT_DECIBEL_SPL;
+
+ if (is_a)
+ analog->mqflags |= SR_MQFLAG_SPL_FREQ_WEIGHT_A;
+ else
+ analog->mqflags |= SR_MQFLAG_SPL_FREQ_WEIGHT_C;
+
+ if (is_fast)
+ analog->mqflags |= SR_MQFLAG_SPL_TIME_WEIGHT_F;
+ else
+ analog->mqflags |= SR_MQFLAG_SPL_TIME_WEIGHT_S;
+
+ /* TODO: How to handle level? */
+ (void)level;
+}
+
+static void decode_packet(struct dev_context *devc)
{
- const struct sr_dev_inst *sdi;
+ struct sr_datafeed_packet packet;
+ struct sr_datafeed_analog analog;
+ float floatval;
+
+ memset(&analog, 0, sizeof(struct sr_datafeed_analog));
+
+ parse_packet(devc->buf, &floatval, &analog);
+
+ /* Send a sample packet with one analog value. */
+ analog.num_samples = 1;
+ analog.data = &floatval;
+ packet.type = SR_DF_ANALOG;
+ packet.payload = &analog;
+ sr_session_send(devc->cb_data, &packet);
+
+ devc->num_samples++;
+}
+
+int tondaj_sl_814_receive_data(int fd, int revents, void *cb_data)
+{
+ struct sr_dev_inst *sdi;
struct dev_context *devc;
+ uint8_t buf[3];
+ int ret;
+
+ (void)revents;
+
+ sdi = cb_data;
+ devc = sdi->priv;
- if (!(sdi = cb_data))
- return TRUE;
+ /* TODO: Parts of this code need to be improved later. */
- if (!(devc = sdi->priv))
- return TRUE;
+ /* State machine. */
+ if (devc->state == SEND_INIT) {
+ /* On the first run, send the "init" command. */
+ buf[0] = 0x10;
+ buf[1] = 0x04;
+ buf[2] = 0x0d;
+ sr_spew("Sending init command: %02x %02x %02x.",
+ buf[0], buf[1], buf[2]);
+ if ((ret = serial_write(fd, buf, 3)) < 0) {
+ sr_err("Error sending init command: %d.", ret);
+ return FALSE;
+ }
+ devc->state = GET_INIT_REPLY;
+ } else if (devc->state == GET_INIT_REPLY) {
+ /* If we just sent the "init" command, get its reply. */
+ if ((ret = serial_read(fd, buf, 2)) < 0) {
+ sr_err("Error reading init reply: %d.", ret);
+ return FALSE;
+ }
+ sr_spew("Received init reply: %02x %02x.", buf[0], buf[1]);
+ /* Expected reply: 0x05 0x0d */
+ if (buf[0] != 0x05 || buf[1] != 0x0d) {
+ sr_err("Received incorrect init reply, retrying.");
+ devc->state = SEND_INIT;
+ return TRUE;
+ }
+ devc->state = SEND_PACKET_REQUEST;
+ } else if (devc->state == SEND_PACKET_REQUEST) {
+ /* Request a packet (send 0x30 ZZ 0x0d). */
+ buf[0] = 0x30;
+ buf[1] = 0x00; /* ZZ */
+ buf[2] = 0x0d;
+ sr_spew("Sending data request command: %02x %02x %02x.",
+ buf[0], buf[1], buf[2]);
+ if ((ret = serial_write(fd, buf, 3)) < 0) {
+ sr_err("Error sending request command: %d.", ret);
+ return FALSE;
+ }
+ devc->buflen = 0;
+ devc->state = GET_PACKET;
+ } else if (devc->state == GET_PACKET) {
+ /* Read a packet from the device. */
+ ret = serial_read(fd, devc->buf + devc->buflen,
+ 4 - devc->buflen);
+ if (ret < 0) {
+ sr_err("Error reading packet: %d.", ret);
+ return TRUE;
+ }
+
+ devc->buflen += ret;
+
+ /* Didn't receive all 4 bytes, yet. */
+ if (devc->buflen != 4)
+ return TRUE;
+
+ sr_spew("Received packet: %02x %02x %02x %02x.", devc->buf[0],
+ devc->buf[1], devc->buf[2], devc->buf[3]);
+
+ /* Expected reply: AA BB ZZ+1 0x0d */
+ if (devc->buf[2] != 0x01 || devc->buf[3] != 0x0d) {
+ sr_err("Received incorrect request reply, retrying.");
+ devc->state = SEND_PACKET_REQUEST;
+ return TRUE;
+ }
+
+ decode_packet(devc);
+
+ devc->state = SEND_PACKET_REQUEST;
+ } else {
+ sr_err("Invalid state: %d.", devc->state);
+ return FALSE;
+ }
- if (revents == G_IO_IN) {
- /* TODO */
+ /* Stop acquisition if we acquired enough samples. */
+ if (devc->limit_samples > 0) {
+ if (devc->num_samples >= devc->limit_samples) {
+ sr_info("Requested number of samples reached.");
+ sdi->driver->dev_acquisition_stop(sdi, cb_data);
+ }
}
return TRUE;
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