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Add initial Tondaj SL-814 protocol handling.

This commit is contained in:
Uwe Hermann 2012-11-09 03:40:53 +01:00
parent aa2af32432
commit c073af80f8
3 changed files with 373 additions and 34 deletions
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219
hardware/tondaj-sl-814/api.c
View File

@ -18,11 +18,30 @@
* 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;
@ -42,9 +61,7 @@ static int clear_instances(void)
continue;
if (!(devc = sdi->priv))
continue;
/* TODO */
sr_serial_dev_inst_free(devc->serial);
sr_dev_inst_free(sdi);
}
@ -63,8 +80,6 @@ static int hw_init(void)
return SR_ERR_MALLOC;
}
/* TODO */
di->priv = drvc;
return SR_OK;
@ -73,15 +88,69 @@ static int hw_init(void)
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;
}
@ -97,14 +166,55 @@ static GSList *hw_dev_list(void)
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;
}
@ -113,16 +223,27 @@ static int hw_cleanup(void)
{
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;
@ -134,45 +255,93 @@ static int hw_info_get(int info_id, const void **data,
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 = {

179
hardware/tondaj-sl-814/protocol.c
View File

@ -18,25 +18,186 @@
* 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)
{
const struct sr_dev_inst *sdi;
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)
{
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;
if (!(sdi = cb_data))
return TRUE;
(void)revents;
if (!(devc = sdi->priv))
return TRUE;
sdi = cb_data;
devc = sdi->priv;
if (revents == G_IO_IN) {
/* TODO */
/* TODO: Parts of this code need to be improved later. */
/* 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;
}
/* 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;

9
hardware/tondaj-sl-814/protocol.h
View File

@ -47,6 +47,15 @@ struct dev_context {
/** The current number of already received samples. */
uint64_t num_samples;
struct sr_serial_dev_inst *serial;
char *serialcomm;
int state;
uint8_t buf[4];
uint8_t buflen;
};
SR_PRIV int tondaj_sl_814_receive_data(int fd, int revents, void *cb_data);