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motech-lps-30x: Implemented driver.

This commit is contained in:
Matthias Heidbrink 2014-05-19 19:48:28 +02:00
parent d0a92abd54
commit 1c3d002b68
3 changed files with 1036 additions and 82 deletions
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809
hardware/motech-lps-30x/api.c
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@ -2,6 +2,7 @@
* This file is part of the libsigrok project. * This file is part of the libsigrok project.
* *
* Copyright (C) 2014 Matthias Heidbrink <m-sigrok@heidbrink.biz> * Copyright (C) 2014 Matthias Heidbrink <m-sigrok@heidbrink.biz>
* Copyright (C) 2014 Bert Vermeulen <bert@biot.com> (code from atten-pps3xxx)
* *
* This program is free software: you can redistribute it and/or modify * This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by * it under the terms of the GNU General Public License as published by
@ -17,174 +18,846 @@
* along with this program. If not, see <http://www.gnu.org/licenses/>. * along with this program. If not, see <http://www.gnu.org/licenses/>.
*/ */
/** @file
* <em>Motech LPS-30x series</em> power supply driver
* @internal
*/
#include <ctype.h>
#include <errno.h>
#include <math.h>
#include <string.h>
#include "protocol.h" #include "protocol.h"
/* Forward declarations */
SR_PRIV struct sr_dev_driver motech_lps_301_driver_info; SR_PRIV struct sr_dev_driver motech_lps_301_driver_info;
static struct sr_dev_driver *di = &motech_lps_301_driver_info; SR_PRIV int lps_read_reply(struct sr_serial_dev_inst *serial, char **buf, int *buflen);
SR_PRIV int lps_send_va(struct sr_serial_dev_inst *serial, const char* fmt, va_list args);
SR_PRIV int lps_cmd_ok(struct sr_serial_dev_inst *serial, const char* fmt, ...);
SR_PRIV int lps_cmd_reply(char* reply, struct sr_serial_dev_inst *serial, const char* fmt, ...);
SR_PRIV int lps_query_status(struct sr_dev_inst* sdi);
static int init(struct sr_context *sr_ctx) /* Serial communication parameters */
#define SERIALCOMM "2400/8n1/dtr=1/rts=1/flow=0"
#define VENDOR_MOTECH "Motech"
/** Driver scanning options. */
static const int32_t hwopts[] = {
SR_CONF_CONN,
SR_CONF_SERIALCOMM,
};
/** Hardware capabilities generic. */
static const int32_t hwcaps[] = {
/* Device class */
SR_CONF_POWER_SUPPLY,
/* Aquisition modes. */
SR_CONF_LIMIT_SAMPLES,
SR_CONF_LIMIT_MSEC,
SR_CONF_CONTINUOUS,
/* Device configuration */
SR_CONF_OUTPUT_CHANNEL,
};
/** Hardware capabilities channel 1, 2. */
static const int32_t hwcaps_ch12[] = {
SR_CONF_OUTPUT_VOLTAGE,
SR_CONF_OUTPUT_VOLTAGE_MAX,
SR_CONF_OUTPUT_CURRENT,
SR_CONF_OUTPUT_CURRENT_MAX,
SR_CONF_OUTPUT_ENABLED,
};
/** Hardware capabilities channel 3. (LPS-304/305 only). */
static const int32_t hwcaps_ch3[] = {
SR_CONF_OUTPUT_VOLTAGE,
SR_CONF_OUTPUT_ENABLED,
};
static const char *channel_modes[] = {
"Independent",
"Track1",
"Track2",
};
static struct lps_modelspec models[] = {
{ LPS_UNKNOWN, "Dummy", 0,
{ {
return std_init(sr_ctx, di, LOG_PREFIX);
}
},
{ LPS_301, "LPS-301", 1,
{
/* Channel 1 */
{ { 0, 32, 0.01 }, { 0.005, 2, 0.001 } },
},
},
{ LPS_302, "LPS-302", 1,
{
/* Channel 1 */
{ { 0, 32, 0.01 }, { 0.005, 3, 0.001 } },
},
},
{ LPS_303, "LPS-303", 1,
{
/* Channel 1 */
{ { 0, 32, 0.01 }, { 0.005, 3, 0.001 } },
},
},
{ LPS_304, "LPS-304", 3,
{
/* Channel 1 */
{ { 0, 32, 0.01 }, { 0.005, 3, 0.001 } },
/* Channel 2 */
{ { 0, 32, 0.01 }, { 0.005, 3, 0.001 } },
/* Channel 3 */
{ { 5, 5, 0.0 }, { 0.005, 3, 0.001 } },
},
},
{ LPS_305, "LPS-305", 3,
{
/* Channel 1 */
{ { 0, 32, 0.01 }, { 0.005, 3, 0.001 } },
/* Channel 2 */
{ { 0, 32, 0.01 }, { 0.005, 3, 0.001 } },
/* Channel 3 */
{ { 3.3, 5, 1.7 }, { 0.005, 3, 0.001 } },
},
},
};
static int init_lps301(struct sr_context *sr_ctx)
{
return std_init(sr_ctx, &motech_lps_301_driver_info, LOG_PREFIX);
} }
static GSList *scan(GSList *options) /** Send command to device with va_list.
*/
SR_PRIV int lps_send_va(struct sr_serial_dev_inst *serial, const char* fmt, va_list args)
{ {
int retc;
char auxfmt[LINELEN_MAX];
char buf[LINELEN_MAX];
snprintf(auxfmt, sizeof(auxfmt), "%s\r\n", fmt);
vsnprintf(buf, sizeof(buf), auxfmt, args);
sr_spew("lps_send_va: \"%s\"", buf);
retc = serial_write_nonblocking(serial, buf, strlen(buf));
if (retc < 0)
return SR_ERR;
return SR_OK;
}
/** Send command to device.
*/
SR_PRIV int lps_send_req(struct sr_serial_dev_inst *serial, const char* fmt, ...)
{
int retc;
va_list args;
va_start(args, fmt);
retc = lps_send_va(serial, fmt, args);
va_end(args);
return retc;
}
/** Send command and consume simple OK reply. */
SR_PRIV int lps_cmd_ok(struct sr_serial_dev_inst *serial, const char* fmt, ...)
{
int retc;
va_list args;
char buf[LINELEN_MAX];
char* bufptr;
int buflen;
/* Send command */
va_start(args, fmt);
retc = lps_send_va(serial, fmt, args);
va_end(args);
if (retc != SR_OK)
return SR_ERR;
/* Read reply */
buf[0] = '\0';
bufptr = buf;
buflen = sizeof(buf);
retc = lps_read_reply(serial, &bufptr, &buflen);
if ((retc == SR_OK) && (buflen == 0))
return SR_OK;
return SR_ERR;
}
/** Send command and read reply string.
* \param reply Pointer to buffer of size LINELEN_MAX. Will be NUL-terminated.
*/
SR_PRIV int lps_cmd_reply(char* reply, struct sr_serial_dev_inst *serial, const char* fmt, ...)
{
int retc;
va_list args;
char buf[LINELEN_MAX];
char* bufptr;
int buflen;
reply[0] = '\0';
/* Send command */
va_start(args, fmt);
retc = lps_send_va(serial, fmt, args);
va_end(args);
if (retc != SR_OK)
return SR_ERR;
/* Read reply */
buf[0] = '\0';
bufptr = buf;
buflen = sizeof(buf);
retc = lps_read_reply(serial, &bufptr, &buflen);
if ((retc == SR_OK) && (buflen > 0)) {
strcpy(reply, buf);
return SR_OK;
}
return SR_ERR;
}
/** Process integer value returned by STATUS command. */
SR_PRIV int lps_process_status(struct sr_dev_inst* sdi, int stat)
{
struct dev_context* devc;
int tracking_mode;
devc = (struct dev_context*)sdi->priv;
sr_spew("Status: %d", stat);
devc->channel_status[0].cc_mode = (stat & 0x01) != 0;
sr_spew("Channel 1 %s mode", devc->channel_status[0].cc_mode?"CC":"CV");
if (devc->model->num_channels > 1) {
devc->channel_status[1].cc_mode = (stat & 0x02) != 0;
sr_spew("Channel 2 %s mode", devc->channel_status[1].cc_mode?"CC":"CV");
tracking_mode = (stat & 0x0c) >> 2;
switch (tracking_mode) {
case 0: devc->tracking_mode = 0;
break;
case 2: devc->tracking_mode = 1;
break;
case 3: devc->tracking_mode = 2;
break;
default:
sr_err("Illegal channel tracking mode %d!", tracking_mode);
devc->tracking_mode = 0;
break;
}
sr_spew("Channel tracking: %d", devc->tracking_mode);
}
devc->channel_status[0].output_enabled = devc->channel_status[1].output_enabled = stat&0x040?TRUE:FALSE;
sr_spew("Channel 1%s output: %s", devc->model->num_channels > 1?"+2":"", devc->channel_status[0].output_enabled?"ON":"OFF");
if (devc->model->num_channels > 2) {
devc->channel_status[2].output_enabled = stat&0x010?TRUE:FALSE;
devc->channel_status[2].output_voltage_last = stat&0x020?3.3:5;
sr_spew("Channel 3 output: %s, U=%02f V, overload=%d",
devc->channel_status[2].output_enabled?"ON":"OFF",
devc->channel_status[2].output_voltage_last,
stat&0x080?1:0);
}
sr_spew("Fan=%d, beep=%d, CC output compensated=%d", stat&0x0100?1:0, stat&0x0200?1:0, stat&0x0400?1:0);
return SR_OK;
}
/** Send STATUS commend and process status string. */
SR_PRIV int lps_query_status(struct sr_dev_inst* sdi)
{
char buf[LINELEN_MAX];
int stat;
const char* ptr;
struct dev_context* devc;
devc = (struct dev_context*)sdi->priv;
devc->req_sent_at = g_get_real_time();
if (lps_cmd_reply(buf, sdi->conn, "STATUS") < 0) {
sr_err("%s: Failed to read status: %d %s", __func__, errno, strerror(errno));
return SR_ERR;
}
/* Jump across leading zeros to prevent sr_atoi() believing this to be octal. */
for (ptr = buf; isspace(*buf) || (*ptr == '0'); ptr++)
;
if (sr_atoi(ptr, &stat) != SR_OK)
return SR_ERR;
return lps_process_status(sdi, stat);
}
static gint64 calc_timeout_ms(gint64 start_us)
{
gint64 result = REQ_TIMEOUT_MS - ((g_get_real_time() - start_us) / 1000);
if (result < 0)
return 0;
return result;
}
/** Read message into buf until "OK" received.
* \retval SR_OK Msg received; buf and buflen contain result, if any except OK.
* \retval SR_ERR Error, including timeout.
*/
SR_PRIV int lps_read_reply(struct sr_serial_dev_inst *serial, char **buf, int *buflen)
{
int retries;
char buf2[LINELEN_MAX];
char *buf2ptr;
int buf2len;
gint64 timeout_start;
*buf[0] = '\0';
/* Read one line. It is either a data message or "OK". */
timeout_start = g_get_real_time();
buf2len = *buflen;
/* Up to 5 tries because serial_readline() will consume only one CR or LF per
* call, but device sends up to 4 in a row. */
for (retries = 0; retries < 5; retries++) {
*buflen = buf2len;
if (serial_readline(serial, buf, buflen, calc_timeout_ms(timeout_start)) != SR_OK)
return SR_ERR;
if (!strcmp(*buf, "OK")) { /* We got an OK! */
*buf[0] = '\0';
*buflen = 0;
return SR_OK;
}
if (*buflen > 0) /* We got a msg! */
break;
}
/* A data msg is in buf (possibly ERROR), need to consume "OK". */
buf2[0] = '\0';
buf2ptr = buf2;
for (retries = 0; retries < 5; retries++) {
buf2len = sizeof(buf2);
if (serial_readline(serial, &buf2ptr, &buf2len, calc_timeout_ms(timeout_start)) != SR_OK)
return SR_ERR;
if (!strcmp(buf2ptr, "OK")) { /* We got an OK! */
if (!strcmp(*buf, "ERROR")) { /* OK came after msg ERROR! */
sr_spew("ERROR found!");
*buf[0] = '\0';
*buflen = 0;
return SR_ERR;
}
return SR_OK;
}
}
return SR_ERR; /* Timeout! */
}
/** Scan for LPS-300 series device.
*/
static GSList *doScan(lps_modelid modelid, struct sr_dev_driver *drv, GSList *options)
{
struct sr_dev_inst *sdi;
struct drv_context *drvc; struct drv_context *drvc;
struct dev_context *devc;
struct sr_serial_dev_inst *serial;
struct sr_channel *ch;
struct sr_channel_group *cg;
GSList *devices; GSList *devices;
const char *conn, *serialcomm;
int cnt;
gchar buf[LINELEN_MAX];
gchar channel[10];
char* verstr;
(void)options; sdi = NULL;
devc = NULL;
conn = serialcomm = NULL;
devices = NULL; devices = NULL;
drvc = di->priv;
drvc = drv->priv;
drvc->instances = NULL; drvc->instances = NULL;
/* TODO: scan for devices, either based on a SR_CONF_CONN option sr_spew("scan() called!");
* or on a USB scan. */
/* Process and check options. */
if (sr_serial_extract_options(options, &conn, &serialcomm) != SR_OK)
return NULL;
if (!serialcomm)
serialcomm = SERIALCOMM;
/* Init serial port. */
if (!(serial = sr_serial_dev_inst_new(conn, serialcomm)))
return NULL;
if (serial_open(serial, SERIAL_RDWR | SERIAL_NONBLOCK) != SR_OK)
goto exit_err;
/* Query and verify model string. */
serial_flush(serial);
if (lps_cmd_reply(buf, serial, "MODEL") != SR_OK)
return NULL;
/* Check model string. */
if (strncmp(buf, "LPS-", 4)) {
sr_spew("Unknown model code \"%s\"!", buf);
return NULL;
}
/* Bug in device FW 1.17, model number is empty, so this can't work with this FW! */
if (modelid == LPS_UNKNOWN) {
g_strstrip(buf);
for (cnt = LPS_301; cnt <= LPS_305; cnt++) {
if (!strcmp(buf, models[cnt].modelstr)) {
modelid = cnt;
break;
}
}
if (modelid == LPS_UNKNOWN) {
sr_err("Unable to detect model from model string '%s'!", buf);
return NULL;
}
}
/* Query version */
verstr = NULL;
if (lps_cmd_reply(buf, serial, "VERSION") == SR_OK) {
if (strncmp(buf, "Ver-", 4)) {
sr_spew("Version string %s not recognized.", buf);
goto exit_err;
}
g_strstrip(buf);
verstr = buf + 4;
}
else /* Bug in device FW 1.17: Quering version string fails while output is active.
Therefore just print an error message, but do not exit with error. */
sr_err("Failed to query for hardware version: %d %s", errno, strerror(errno));
sdi = sr_dev_inst_new(0, SR_ST_INACTIVE, VENDOR_MOTECH, models[modelid].modelstr, verstr);
sdi->driver = drv;
sdi->inst_type = SR_INST_SERIAL;
sdi->conn = serial;
devc = g_malloc0(sizeof(struct dev_context));
devc->model = &models[modelid];
devc->limit_samples = 0;
devc->limit_msec = 0;
devc->num_samples = 0;
devc->elapsed_msec = g_timer_new();
sdi->priv = devc;
/* Setup channels and channel groups. */
for (cnt = 0; cnt < models[modelid].num_channels; cnt++) {
snprintf(channel, sizeof(channel), "CH%d", cnt + 1);
ch = sr_channel_new(cnt, SR_CHANNEL_ANALOG, TRUE, channel);
sdi->channels = g_slist_append(sdi->channels, ch);
devc->channel_status[cnt].info = g_slist_append(NULL, ch);
cg = g_malloc(sizeof(struct sr_channel_group));
snprintf(channel, sizeof(channel), "CG%d", cnt+1);
cg->name = g_strdup(channel);
cg->priv = NULL;
cg->channels = g_slist_append(NULL, ch);
sdi->channel_groups = g_slist_append(sdi->channel_groups, cg);
}
drvc->instances = g_slist_append(drvc->instances, sdi);
devices = g_slist_append(devices, sdi);
/* Query status */
if (lps_query_status(sdi) != SR_OK)
goto exit_err;
serial_close(serial);
if (!devices)
sr_serial_dev_inst_free(serial);
return devices; return devices;
exit_err:
sr_info("%s: Error!", __func__);
if (serial) {
serial_close(serial);
sr_serial_dev_inst_free(serial);
}
if (devc)
g_free(devc);
if (sdi)
sr_dev_inst_free(sdi);
return NULL;
} }
static GSList *dev_list(void) /** Scan for LPS-301 device. */
static GSList *scan_lps301(GSList *options)
{ {
return ((struct drv_context *)(di->priv))->instances; return doScan(LPS_301, &motech_lps_301_driver_info, options);
} }
static int dev_clear(void) static GSList *doDevList(struct sr_dev_driver *drv)
{ {
return std_dev_clear(di, NULL); return ((struct drv_context *)(drv->priv))->instances;
} }
static int dev_open(struct sr_dev_inst *sdi) static GSList *dev_list_lps301(void)
{ {
(void)sdi; return doDevList(&motech_lps_301_driver_info);
/* TODO: get handle from sdi->conn and open it. */
sdi->status = SR_ST_ACTIVE;
return SR_OK;
} }
static int dev_close(struct sr_dev_inst *sdi) static void dev_clear_private(struct dev_context* devc)
{ {
(void)sdi; int ch_idx;
/* TODO: get handle from sdi->conn and close it. */ /* Free channel_status.info (list only, data owned by sdi). */
for (ch_idx = 0; ch_idx < devc->model->num_channels; ch_idx++)
g_slist_free(devc->channel_status[ch_idx].info);
sdi->status = SR_ST_INACTIVE; g_timer_destroy(devc->elapsed_msec);
}
return SR_OK; static int dev_clear_lps301(void)
{
return std_dev_clear(&motech_lps_301_driver_info, (std_dev_clear_callback)dev_clear_private);
} }
static int cleanup(void) static int cleanup(void)
{ {
dev_clear(); return dev_clear_lps301();
/* TODO: free other driver resources, if any. */
return SR_OK;
} }
static int config_get(int key, GVariant **data, const struct sr_dev_inst *sdi, static int config_get(int key, GVariant **data, const struct sr_dev_inst *sdi,
const struct sr_channel_group *cg) const struct sr_channel_group *cg)
{ {
int ret; struct dev_context *devc;
struct sr_channel *ch;
int ch_idx;
(void)sdi; if (!sdi)
(void)data; return SR_ERR_ARG;
(void)cg;
ret = SR_OK; devc = sdi->priv;
if (!cg) {
/* No channel group: global options. */
switch (key) { switch (key) {
/* TODO */ case SR_CONF_LIMIT_SAMPLES:
*data = g_variant_new_uint64(devc->limit_samples);
break;
case SR_CONF_LIMIT_MSEC:
*data = g_variant_new_uint64(devc->limit_msec);
break;
case SR_CONF_OUTPUT_CHANNEL:
*data = g_variant_new_string(channel_modes[devc->tracking_mode]);
break;
default: default:
return SR_ERR_NA; return SR_ERR_NA;
} }
} else {
/* We only ever have one channel per channel group in this driver. */
ch = cg->channels->data;
ch_idx = ch->index;
switch (key) {
case SR_CONF_OUTPUT_VOLTAGE:
*data = g_variant_new_double(devc->channel_status[ch_idx].output_voltage_last);
break;
case SR_CONF_OUTPUT_VOLTAGE_MAX:
*data = g_variant_new_double(devc->channel_status[ch_idx].output_voltage_max);
break;
case SR_CONF_OUTPUT_CURRENT:
*data = g_variant_new_double(devc->channel_status[ch_idx].output_current_last);
break;
case SR_CONF_OUTPUT_CURRENT_MAX:
*data = g_variant_new_double(devc->channel_status[ch_idx].output_current_max);
break;
case SR_CONF_OUTPUT_ENABLED:
*data = g_variant_new_boolean(devc->channel_status[ch_idx].output_enabled);
break;
default:
return SR_ERR_NA;
}
}
return ret; return SR_OK;
} }
static int config_set(int key, GVariant *data, const struct sr_dev_inst *sdi, static int config_set(int key, GVariant *data, const struct sr_dev_inst *sdi,
const struct sr_channel_group *cg) const struct sr_channel_group *cg)
{ {
int ret; struct dev_context *devc;
struct sr_channel *ch;
(void)data; gdouble dval;
(void)cg; int ch_idx;
const char *sval;
gboolean bval;
int idx;
gboolean found;
if (sdi->status != SR_ST_ACTIVE) if (sdi->status != SR_ST_ACTIVE)
return SR_ERR_DEV_CLOSED; return SR_ERR_DEV_CLOSED;
ret = SR_OK; devc = sdi->priv;
/* Cannot change settings while aquisition active, would cause a mess with commands.
* Changing this would be possible, but tricky. */
if (devc->acq_running)
return SR_ERR_NA;
if (!cg) {
/* No channel group: global options. */
switch (key) { switch (key) {
/* TODO */ case SR_CONF_LIMIT_MSEC:
if (g_variant_get_uint64(data) == 0) {
sr_err("LIMIT_MSEC can't be 0.");
return SR_ERR;
}
devc->limit_msec = g_variant_get_uint64(data);
sr_dbg("Setting time limit to %" PRIu64 "ms.",
devc->limit_msec);
break;
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_OUTPUT_CHANNEL:
sval = g_variant_get_string(data, NULL);
found = FALSE;
for (idx = 0; idx < (int)ARRAY_SIZE(channel_modes); idx++)
{
if (!strcmp(sval, channel_modes[idx])) {
found = TRUE;
if (devc->tracking_mode == idx)
break; /* Nothing to do! */
devc->tracking_mode = idx;
if (devc->model->modelid >= LPS_304) /* No use to set anything in the smaller models. */
return lps_cmd_ok(sdi->conn, "TRACK%1d", devc->tracking_mode);
}
if (devc->model->modelid <= LPS_303) /* Only first setting possible for smaller models. */
break;
}
if (!found) {
return SR_ERR_ARG;
}
break;
default: default:
ret = SR_ERR_NA; return SR_ERR_NA;
}
} else {
/* Channel group specified: per-channel options. */
/* We only ever have one channel per channel group in this driver. */
ch = cg->channels->data;
ch_idx = ch->index;
switch (key) {
case SR_CONF_OUTPUT_VOLTAGE_MAX:
dval = g_variant_get_double(data);
if (dval < 0 || dval > devc->model->channels[ch_idx].voltage[1])
return SR_ERR_ARG;
if (ch_idx == 2) {
if (devc->model->modelid < LPS_304)
return SR_ERR_ARG;
if (fabs(dval - 5.000) <= 0.001)
dval = 5.0;
else if ((devc->model->modelid >= LPS_305) && (fabs(dval - 3.300) <= 0.001))
dval = 3.3;
else return SR_ERR_ARG;
} }
return ret; devc->channel_status[ch_idx].output_voltage_max = dval;
if (ch_idx == 2)
return lps_cmd_ok(sdi->conn, "VDD%1.0f", trunc(dval));
else
return lps_cmd_ok(sdi->conn, "VSET%d %05.3f", ch_idx+1, dval);
break;
case SR_CONF_OUTPUT_CURRENT_MAX:
dval = g_variant_get_double(data);
if (dval < 0 || dval > devc->model->channels[ch_idx].current[1])
return SR_ERR_ARG;
if (ch_idx == 2) /* No current setting for CH3. */
return SR_ERR_NA;
devc->channel_status[ch_idx].output_current_max = dval;
return lps_cmd_ok(sdi->conn, "ISET%d %05.4f", ch_idx+1, dval);
break;
case SR_CONF_OUTPUT_ENABLED:
bval = g_variant_get_boolean(data);
if (bval == devc->channel_status[ch_idx].output_enabled) /* Nothing to do. */
break;
devc->channel_status[ch_idx].output_enabled = bval;
if (ch_idx != 2) { /* Channels 1,2 can be set only together. */
devc->channel_status[ch_idx^1].output_enabled = bval;
return lps_cmd_ok(sdi->conn, "OUT%1d", (int)bval);
} else { /* Channel 3: No command to disable output, set voltage to 0 instead. */
if (bval)
return lps_cmd_ok(sdi->conn, "VDD%1.0f", devc->channel_status[ch_idx].output_voltage_max);
else
return lps_cmd_ok(sdi->conn, "VDD0");
}
break;
default:
return SR_ERR_NA;
}
}
return SR_OK;
} }
static int config_list(int key, GVariant **data, const struct sr_dev_inst *sdi, static int config_list(int key, GVariant **data, const struct sr_dev_inst *sdi,
const struct sr_channel_group *cg) const struct sr_channel_group *cg)
{ {
int ret; struct dev_context *devc;
struct sr_channel *ch;
int ch_idx, i;
GVariant *gvar;
GVariantBuilder gvb;
(void)sdi;
(void)data; (void)data;
(void)cg;
ret = SR_OK; /* Driver options, no device instance necessary. */
switch (key) { switch (key) {
/* TODO */ case SR_CONF_SCAN_OPTIONS:
*data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
hwopts, ARRAY_SIZE(hwopts), sizeof(int32_t));
return SR_OK;
default:
if (sdi == NULL)
return SR_ERR_ARG;
devc = sdi->priv;
}
/* Device options, independant from channel groups. */
if (cg == NULL) {
switch (key) {
case SR_CONF_DEVICE_OPTIONS:
*data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
hwcaps, ARRAY_SIZE(hwcaps), sizeof(int32_t));
return SR_OK;
case SR_CONF_OUTPUT_CHANNEL:
if (devc->model->modelid <= LPS_303) {
/* The 1-channel models. */
*data = g_variant_new_strv(channel_modes, 1);
} else {
/* The other models support all modes. */
*data = g_variant_new_strv(channel_modes, ARRAY_SIZE(channel_modes));
}
return SR_OK;
break;
default:
return SR_ERR_NA;
}
}
/* Device options, depending on channel groups. */
ch = cg->channels->data;
ch_idx = ch->index;
switch (key) {
case SR_CONF_DEVICE_OPTIONS:
if ((ch_idx == 0) || (ch_idx == 1)) /* CH1, CH2 */
*data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
hwcaps_ch12, ARRAY_SIZE(hwcaps_ch12), sizeof(int32_t));
else /* Must be CH3 */
*data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
hwcaps_ch3, ARRAY_SIZE(hwcaps_ch3), sizeof(int32_t));
break;
case SR_CONF_OUTPUT_VOLTAGE_MAX:
g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY);
/* Min, max, step. */
for (i = 0; i < 3; i++) {
gvar = g_variant_new_double(devc->model->channels[ch_idx].voltage[i]);
g_variant_builder_add_value(&gvb, gvar);
}
*data = g_variant_builder_end(&gvb);
break;
case SR_CONF_OUTPUT_CURRENT_MAX:
g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY);
/* Min, max, step. */
for (i = 0; i < 3; i++) {
gvar = g_variant_new_double(devc->model->channels[ch_idx].current[i]);
g_variant_builder_add_value(&gvb, gvar);
}
*data = g_variant_builder_end(&gvb);
break;
default: default:
return SR_ERR_NA; return SR_ERR_NA;
} }
return ret; return SR_OK;
} }
static int dev_acquisition_start(const struct sr_dev_inst *sdi, static int dev_acquisition_start(const struct sr_dev_inst *sdi,
void *cb_data) void *cb_data)
{ {
(void)sdi; struct dev_context *devc;
(void)cb_data; struct sr_serial_dev_inst *serial;
if (sdi->status != SR_ST_ACTIVE) if (sdi->status != SR_ST_ACTIVE)
return SR_ERR_DEV_CLOSED; return SR_ERR_DEV_CLOSED;
/* TODO: configure hardware, reset acquisition state, set up devc = sdi->priv;
* callbacks and send header packet. */
devc->acq_running = TRUE;
serial = sdi->conn;
serial_source_add(serial, G_IO_IN, 50, motech_lps_30x_receive_data, (void *)sdi);
std_session_send_df_header(cb_data, LOG_PREFIX);
/* Start timer, if required. */
if (devc->limit_msec)
g_timer_start(devc->elapsed_msec);
devc->acq_req = AQ_NONE;
/* Do not start polling device here, the read function will do it in 50 ms. */
return SR_OK; return SR_OK;
} }
static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data) static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
{ {
(void)cb_data; struct dev_context *devc;
if (sdi->status != SR_ST_ACTIVE) /* Stop timer, if required. */
return SR_ERR_DEV_CLOSED; if (sdi && (devc = sdi->priv) && devc->limit_msec)
g_timer_stop(devc->elapsed_msec);
/* TODO: stop acquisition. */ return std_serial_dev_acquisition_stop(sdi, cb_data, std_serial_dev_close,
sdi->conn, LOG_PREFIX);
return SR_OK;
} }
SR_PRIV struct sr_dev_driver motech_lps_301_driver_info = { SR_PRIV struct sr_dev_driver motech_lps_301_driver_info = {
.name = "motech-lps-301", .name = "motech-lps-301",
.longname = "Motech LPS-301", .longname = "Motech LPS-301",
.api_version = 1, .api_version = 1,
.init = init, .init = init_lps301,
.cleanup = cleanup, .cleanup = cleanup,
.scan = scan, .scan = scan_lps301,
.dev_list = dev_list, .dev_list = dev_list_lps301,
.dev_clear = dev_clear, .dev_clear = dev_clear_lps301,
.config_get = config_get, .config_get = config_get,
.config_set = config_set, .config_set = config_set,
.config_list = config_list, .config_list = config_list,
.dev_open = dev_open, .dev_open = std_serial_dev_open,
.dev_close = dev_close, .dev_close = std_serial_dev_close,
.dev_acquisition_start = dev_acquisition_start, .dev_acquisition_start = dev_acquisition_start,
.dev_acquisition_stop = dev_acquisition_stop, .dev_acquisition_stop = dev_acquisition_stop,
.priv = NULL, .priv = NULL,

210
hardware/motech-lps-30x/protocol.c
View File

@ -2,6 +2,7 @@
* This file is part of the libsigrok project. * This file is part of the libsigrok project.
* *
* Copyright (C) 2014 Matthias Heidbrink <m-sigrok@heidbrink.biz> * Copyright (C) 2014 Matthias Heidbrink <m-sigrok@heidbrink.biz>
* Copyright (C) 2014 Bert Vermeulen <bert@biot.com> (code from atten-pps3xxx)
* *
* This program is free software: you can redistribute it and/or modify * This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by * it under the terms of the GNU General Public License as published by
@ -17,12 +18,130 @@
* along with this program. If not, see <http://www.gnu.org/licenses/>. * along with this program. If not, see <http://www.gnu.org/licenses/>.
*/ */
/** @file
* <em>Motech LPS-30x series</em> power supply driver
* @internal
*/
#include <errno.h>
#include <string.h>
#include "protocol.h" #include "protocol.h"
/** Send data packets for current measurements. */
static void send_data(struct sr_dev_inst *sdi)
{
struct dev_context *devc;
struct sr_datafeed_packet packet;
struct sr_datafeed_analog analog;
int i;
float data[MAX_CHANNELS];
devc = sdi->priv;
packet.type = SR_DF_ANALOG;
packet.payload = &analog;
analog.channels = sdi->channels;
analog.num_samples = 1;
analog.mq = SR_MQ_VOLTAGE;
analog.unit = SR_UNIT_VOLT;
analog.mqflags = SR_MQFLAG_DC;
analog.data = data;
for (i = 0; i < devc->model->num_channels; i++)
analog.data[i] = devc->channel_status[i].output_voltage_last; /* Value always 3.3 or 5 for channel 3, if present! */
sr_session_send(sdi, &packet);
analog.mq = SR_MQ_CURRENT;
analog.unit = SR_UNIT_AMPERE;
analog.mqflags = 0;
analog.data = data;
for (i = 0; i < devc->model->num_channels; i++)
analog.data[i] = devc->channel_status[i].output_current_last; /* Value always 0 for channel 3, if present! */
sr_session_send(sdi, &packet);
devc->num_samples++;
}
/** Process a complete line (without CR/LF) in buf. */
static void process_line(struct sr_dev_inst *sdi)
{
struct dev_context *devc;
struct sr_serial_dev_inst *serial;
double dbl;
int auxint;
devc = sdi->priv;
serial = sdi->conn;
switch (devc->acq_req_pending) {
case 0: /* Should not happen... */
break;
case 1: /* Waiting for data reply to request */
/* Convert numbers */
switch (devc->acq_req) {
case AQ_U1: case AQ_U2: case AQ_I1: case AQ_I2:
if (sr_atod(devc->buf, &dbl) != SR_OK) {
sr_err("Failed to convert '%s' to double, errno=%d %s",
devc->buf, errno, strerror(errno));
dbl = 0.0;
}
break;
case AQ_STATUS:
if (sr_atoi(devc->buf, &auxint) != SR_OK) {
sr_err("Failed to convert '%s' to int, errno=%d %s",
devc->buf, errno, strerror(errno));
auxint = 0;
}
break;
default:
break;
}
switch (devc->acq_req) {
case AQ_U1:
devc->channel_status[0].output_voltage_last = dbl;
break;
case AQ_I1:
devc->channel_status[0].output_current_last = dbl;
break;
case AQ_U2:
devc->channel_status[1].output_voltage_last = dbl;
break;
case AQ_I2:
devc->channel_status[1].output_current_last = dbl;
break;
case AQ_STATUS: /* Process status and generate data. */
if (lps_process_status(sdi, auxint) == SR_OK) {
send_data(sdi);
}
break;
default:
break;
}
devc->acq_req_pending = 2;
break;
case 2: /* Waiting for OK after request */
if (strcmp(devc->buf, "OK")) {
sr_err("Unexpected reply while waiting for OK: '%s'", devc->buf);
}
devc->acq_req_pending = 0;
break;
}
devc->buf[0] = '\0';
devc->buflen = 0;
}
SR_PRIV int motech_lps_30x_receive_data(int fd, int revents, void *cb_data) SR_PRIV int motech_lps_30x_receive_data(int fd, int revents, void *cb_data)
{ {
const struct sr_dev_inst *sdi; struct sr_dev_inst *sdi;
struct dev_context *devc; struct dev_context *devc;
struct sr_serial_dev_inst *serial;
// char achar;
int len;
gdouble elapsed_s;
(void)fd; (void)fd;
@ -32,8 +151,93 @@ SR_PRIV int motech_lps_30x_receive_data(int fd, int revents, void *cb_data)
if (!(devc = sdi->priv)) if (!(devc = sdi->priv))
return TRUE; return TRUE;
if (revents == G_IO_IN) { serial = sdi->conn;
/* TODO */
if (revents == G_IO_IN) { /* Serial data arrived. */
while (LINELEN_MAX - devc->buflen - 2 > 0) {
len = serial_read(serial, devc->buf + devc->buflen, 1);
if (len < 1)
break;
/* Eliminate whitespace at beginning of line. */
if (g_ascii_isspace(devc->buf[0])) {
devc->buf[0] = '\0';
devc->buflen = 0;
continue;
}
// achar = *(devc->buf + devc->buflen);
// sr_spew("read 0x%02x/%d/'%c'", achar, achar, achar);
devc->buflen += len;
devc->buf[devc->buflen] = '\0';
/* If line complete, process msg. */
if ((devc->buflen > 0) && ((devc->buf[devc->buflen-1] == '\r') || devc->buf[devc->buflen-1] == '\n')) {
devc->buflen--;
devc->buf[devc->buflen] = '\0';
sr_spew("Line complete: \"%s\"", devc->buf);
process_line(sdi);
}
}
}
/* If number of samples or time limit reached, stop acquisition. */
if (devc->limit_samples && (devc->num_samples >= devc->limit_samples))
sdi->driver->dev_acquisition_stop(sdi, cb_data);
if (devc->limit_msec) {
elapsed_s = g_timer_elapsed(devc->elapsed_msec, NULL);
if ((elapsed_s * 1000) >= devc->limit_msec)
sdi->driver->dev_acquisition_stop(sdi, cb_data);
}
/* Request next packet, if required. */
if ((sdi->status == SR_ST_ACTIVE) && (devc->acq_running)){
if (devc->acq_req_pending) {
gint64 elapsed_us = g_get_monotonic_time() - devc->req_sent_at;
if (elapsed_us > (REQ_TIMEOUT_MS * 1000)) {
sr_spew("Request timeout: req=%d t=%lldus", (int)devc->acq_req, elapsed_us);
devc->acq_req_pending = 0;
}
}
if (devc->acq_req_pending == 0) {
switch(devc->acq_req)
{
case AQ_NONE: /* Fall through */
case AQ_STATUS:
devc->acq_req = AQ_U1;
lps_send_req(serial, "VOUT1");
break;
case AQ_U1:
devc->acq_req = AQ_I1;
lps_send_req(serial, "IOUT1");
break;
case AQ_I1:
if (devc->model->num_channels == 1) {
devc->acq_req = AQ_STATUS;
lps_send_req(serial, "STATUS");
} else {
devc->acq_req = AQ_U2;
lps_send_req(serial, "VOUT2");
}
break;
case AQ_U2:
devc->acq_req = AQ_I2;
lps_send_req(serial, "IOUT2");
break;
case AQ_I2:
devc->acq_req = AQ_STATUS;
lps_send_req(serial, "STATUS");
break;
default:
sr_err("Illegal devc->acq_req=%d", devc->acq_req);
return SR_ERR;
}
devc->req_sent_at = g_get_real_time();
devc->acq_req_pending = 1;
}
} }
return TRUE; return TRUE;

89
hardware/motech-lps-30x/protocol.h
View File

@ -2,6 +2,7 @@
* This file is part of the libsigrok project. * This file is part of the libsigrok project.
* *
* Copyright (C) 2014 Matthias Heidbrink <m-sigrok@heidbrink.biz> * Copyright (C) 2014 Matthias Heidbrink <m-sigrok@heidbrink.biz>
* Copyright (C) 2014 Bert Vermeulen <bert@biot.com> (code from atten-pps3xxx)
* *
* This program is free software: you can redistribute it and/or modify * This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by * it under the terms of the GNU General Public License as published by
@ -17,28 +18,104 @@
* along with this program. If not, see <http://www.gnu.org/licenses/>. * along with this program. If not, see <http://www.gnu.org/licenses/>.
*/ */
#ifndef LIBSIGROK_HARDWARE_MOTECH_LPS30X_PROTOCOL_H /** @file
#define LIBSIGROK_HARDWARE_MOTECH_LPS30X_PROTOCOL_H * <em>Motech LPS-30x series</em> power supply driver
* @internal
*/
#ifndef LIBSIGROK_HARDWARE_MOTECH_LPS_30X_PROTOCOL_H
#define LIBSIGROK_HARDWARE_MOTECH_LPS_30X_PROTOCOL_H
#include <stdint.h> #include <stdint.h>
#include <glib.h> #include <glib.h>
#include "libsigrok.h" #include "libsigrok.h"
#include "libsigrok-internal.h" #include "libsigrok-internal.h"
#define LOG_PREFIX "motech-lps30x"
SR_PRIV int lps_process_status(struct sr_dev_inst* sdi, int stat);
SR_PRIV int lps_send_req(struct sr_serial_dev_inst *serial, const char* fmt, ...);
#define LOG_PREFIX "motech-lps-30x"
#define LINELEN_MAX 50 /**< Max. line length for requests */
#define REQ_TIMEOUT_MS 250 /**< Timeout [ms] for single request. */
#define MAX_CHANNELS 3
typedef enum {
LPS_UNKNOWN = 0,/**< Unknown model (used during detection process) */
LPS_301, /**< Motech/Amrel LPS-301, 1 output */
LPS_302, /**< Motech/Amrel LPS-302, 1 output */
LPS_303, /**< Motech/Amrel LPS-303, 1 output */
LPS_304, /**< Motech/Amrel LPS-304, 3 outputs */
LPS_305, /**< Motech/Amrel LPS-305, 3 outputs */
} lps_modelid;
/** Channel specification */
struct channel_spec {
/* Min, max, step. */
gdouble voltage[3];
gdouble current[3];
};
/** Model properties specification */
struct lps_modelspec {
lps_modelid modelid;
const char* modelstr;
uint8_t num_channels;
struct channel_spec channels[3];
};
/** Used to implement a little state machine to query all required values in a row. */
typedef enum {
AQ_NONE,
AQ_U1,
AQ_I1,
AQ_I2,
AQ_U2,
AQ_STATUS,
} acquisition_req;
/** Status of a single channel. */
struct channel_status {
/* Channel information (struct channel_info*). data (struct) owned by sdi, just a reference to address a single channel. */
GSList* info;
/* Received from device. */
gdouble output_voltage_last;
gdouble output_current_last;
gboolean output_enabled; /**< Also used when set. */
gboolean cc_mode; /**< Constant current mode. If false, constant voltage mode. */
/* Set by frontend. */
gdouble output_voltage_max;
gdouble output_current_max;
};
/** Private, per-device-instance driver context. */ /** Private, per-device-instance driver context. */
struct dev_context { struct dev_context {
/* Model-specific information */ /* Model-specific information */
struct lps_modelspec* model;
/* Acquisition settings */ /* Acquisition status */
gboolean acq_running; /**< Aquisition is running. */
uint64_t limit_samples; /**< Target number of samples */
uint64_t limit_msec; /**< Target sampling time */
acquisition_req acq_req; /**< Current request. */
uint8_t acq_req_pending; /**< Request pending. 0=none, 1=reply, 2=OK */
/* Operational state */ /* Operational state */
struct channel_status channel_status[MAX_CHANNELS];
guint8 tracking_mode; /**< 0=off, 1=Tracking from CH1, 2=Tracking from CH2. */
/* Temporary state across callbacks */ /* Temporary state across callbacks */
int64_t req_sent_at; /**< Request sent. */
uint64_t num_samples; /**< Current #samples for limit_samples */
GTimer *elapsed_msec; /**< Used for sampling with limit_msec */
gchar buf[LINELEN_MAX]; /**< Buffer for read callback */
int buflen; /**< Data len in buf */
}; };
SR_PRIV int motech_lps30x_receive_data(int fd, int revents, void *cb_data); SR_PRIV int motech_lps_30x_receive_data(int fd, int revents, void *cb_data);
#endif #endif