* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
+#include <string.h>
+#include <errno.h>
#include "protocol.h"
-SR_PRIV struct sr_dev_driver atten_pps3xxx_driver_info;
-static struct sr_dev_driver *di = &atten_pps3xxx_driver_info;
+/*
+ * The default serial communication settings on the device are 9600
+ * baud, 9 data bits. The 9th bit isn't actually used, and the vendor
+ * software uses Mark parity to absorb the extra bit.
+ *
+ * Since 9 data bits is not a standard available in POSIX, we use two
+ * stop bits to skip over the extra bit instead.
+ */
+#define SERIALCOMM "9600/8n2"
+
+static const int32_t hwopts[] = {
+ SR_CONF_CONN,
+ SR_CONF_SERIALCOMM,
+};
+
+static const int32_t devopts[] = {
+ SR_CONF_POWER_SUPPLY,
+ SR_CONF_CONTINUOUS,
+};
+
+static const int32_t devopts_sdi[] = {
+ SR_CONF_POWER_SUPPLY,
+ SR_CONF_CONTINUOUS,
+ SR_CONF_OUTPUT_CHANNEL,
+ SR_CONF_OVER_CURRENT_PROTECTION,
+};
+
+static const int32_t devopts_pg[] = {
+ SR_CONF_POWER_SUPPLY,
+ SR_CONF_CONTINUOUS,
+ SR_CONF_OUTPUT_VOLTAGE,
+ SR_CONF_OUTPUT_VOLTAGE_MAX,
+ SR_CONF_OUTPUT_CURRENT,
+ SR_CONF_OUTPUT_CURRENT_MAX,
+ SR_CONF_OUTPUT_ENABLED,
+};
+
+static const char *channel_modes[] = {
+ "Independent",
+ "Series",
+ "Parallel",
+};
+
+static struct pps_model models[] = {
+ { PPS_3203T_3S, "PPS3203T-3S",
+ CHANMODE_INDEPENDENT | CHANMODE_SERIES | CHANMODE_PARALLEL,
+ 3,
+ {
+ /* Channel 1 */
+ { { 0, 32, 0.01 }, { 0, 3, 0.001 } },
+ /* Channel 2 */
+ { { 0, 32, 0.01 }, { 0, 3, 0.001 } },
+ /* Channel 3 */
+ { { 0, 6, 0.01 }, { 0, 3, 0.001 } },
+ },
+ },
+};
+
+
+SR_PRIV struct sr_dev_driver atten_pps3203_driver_info;
+static struct sr_dev_driver *di = &atten_pps3203_driver_info;
static int init(struct sr_context *sr_ctx)
{
return std_init(sr_ctx, di, LOG_PREFIX);
}
-static GSList *scan(GSList *options)
+static GSList *scan(GSList *options, int modelid)
{
+ struct sr_dev_inst *sdi;
struct drv_context *drvc;
- GSList *devices;
-
- (void)options;
+ struct dev_context *devc;
+ struct sr_config *src;
+ struct sr_probe *probe;
+ struct sr_probe_group *pg;
+ struct sr_serial_dev_inst *serial;
+ GSList *l, *devices;
+ struct pps_model *model;
+ uint8_t packet[PACKET_SIZE];
+ unsigned int i;
+ int ret;
+ const char *conn, *serialcomm;
+ char channel[10];
devices = NULL;
drvc = di->priv;
drvc->instances = NULL;
- /* TODO: scan for devices, either based on a SR_CONF_CONN option
- * or on a USB scan. */
+ 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 (!serialcomm)
+ serialcomm = SERIALCOMM;
+
+ if (!(serial = sr_serial_dev_inst_new(conn, serialcomm)))
+ return NULL;
+
+ if (serial_open(serial, SERIAL_RDWR | SERIAL_NONBLOCK) != SR_OK)
+ return NULL;
+ serial_flush(serial);
+
+ /* This is how the vendor software probes for hardware. */
+ memset(packet, 0, PACKET_SIZE);
+ packet[0] = 0xaa;
+ packet[1] = 0xaa;
+ if (serial_write(serial, packet, PACKET_SIZE) == -1) {
+ sr_err("Unable to write while probing for hardware: %s",
+ strerror(errno));
+ return NULL;
+ }
+ /* The device responds with a 24-byte packet when it receives a packet.
+ * At 9600 baud, 300ms is long enough for it to have arrived. */
+ g_usleep(300 * 1000);
+ memset(packet, 0, PACKET_SIZE);
+ if ((ret = serial_read_nonblocking(serial, packet, PACKET_SIZE)) < 0) {
+ sr_err("Unable to read while probing for hardware: %s",
+ strerror(errno));
+ return NULL;
+ }
+ if (ret != PACKET_SIZE || packet[0] != 0xaa || packet[1] != 0xaa) {
+ /* Doesn't look like an Atten PPS. */
+ return NULL;
+ }
+
+ model = NULL;
+ for (i = 0; i < ARRAY_SIZE(models); i++) {
+ if (models[i].modelid == modelid) {
+ model = &models[i];
+ break;
+ }
+ }
+ if (!model) {
+ sr_err("Unknown modelid %d", modelid);
+ return NULL;
+ }
+
+ sdi = sr_dev_inst_new(0, SR_ST_INACTIVE, "Atten", model->name, NULL);
+ sdi->driver = di;
+ sdi->inst_type = SR_INST_SERIAL;
+ sdi->conn = serial;
+ for (i = 0; i < MAX_CHANNELS; i++) {
+ snprintf(channel, 10, "CH%d", i + 1);
+ probe = sr_probe_new(i, SR_PROBE_ANALOG, TRUE, channel);
+ sdi->probes = g_slist_append(sdi->probes, probe);
+ pg = g_malloc(sizeof(struct sr_probe_group));
+ pg->name = g_strdup(channel);
+ pg->probes = g_slist_append(NULL, probe);
+ pg->priv = NULL;
+ sdi->probe_groups = g_slist_append(sdi->probe_groups, pg);
+ }
+
+ devc = g_malloc0(sizeof(struct dev_context));
+ devc->model = model;
+ devc->config = g_malloc0(sizeof(struct per_channel_config) * model->num_channels);
+ sdi->priv = devc;
+ drvc->instances = g_slist_append(drvc->instances, sdi);
+ devices = g_slist_append(devices, sdi);
+
+ serial_close(serial);
+ if (!devices)
+ sr_serial_dev_inst_free(serial);
return devices;
}
+static GSList *scan_3203(GSList *options)
+{
+ return scan(options, PPS_3203T_3S);
+}
+
static GSList *dev_list(void)
{
return ((struct drv_context *)(di->priv))->instances;
return std_dev_clear(di, NULL);
}
-static int dev_open(struct sr_dev_inst *sdi)
-{
- (void)sdi;
-
- /* 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)
-{
- (void)sdi;
-
- /* TODO: get handle from sdi->conn and close it. */
-
- sdi->status = SR_ST_INACTIVE;
-
- return SR_OK;
-}
-
static int cleanup(void)
{
- dev_clear();
-
- /* TODO: free other driver resources, if any. */
-
- return SR_OK;
+ return dev_clear();
}
static int config_get(int key, GVariant **data, const struct sr_dev_inst *sdi,
const struct sr_probe_group *probe_group)
{
- int ret;
+ struct dev_context *devc;
+ struct sr_probe *probe;
+ int channel, ret;
+
+ if (!sdi)
+ return SR_ERR_ARG;
- (void)sdi;
- (void)data;
- (void)probe_group;
+ devc = sdi->priv;
ret = SR_OK;
- switch (key) {
- /* TODO */
- default:
- return SR_ERR_NA;
+ if (!probe_group) {
+ /* No probe group: global options. */
+ switch (key) {
+ case SR_CONF_OUTPUT_CHANNEL:
+ *data = g_variant_new_string(channel_modes[devc->channel_mode - 1]);
+ break;
+ case SR_CONF_OVER_CURRENT_PROTECTION:
+ *data = g_variant_new_boolean(devc->over_current_protection);
+ break;
+ default:
+ return SR_ERR_NA;
+ }
+ } else {
+ /* We only ever have one channel per probe group in this driver. */
+ probe = probe_group->probes->data;
+ channel = probe->index;
+
+ switch (key) {
+ case SR_CONF_OUTPUT_VOLTAGE:
+ *data = g_variant_new_double(devc->config[channel].output_voltage_last);
+ break;
+ case SR_CONF_OUTPUT_VOLTAGE_MAX:
+ *data = g_variant_new_double(devc->config[channel].output_voltage_max);
+ break;
+ case SR_CONF_OUTPUT_CURRENT:
+ *data = g_variant_new_double(devc->config[channel].output_current_last);
+ break;
+ case SR_CONF_OUTPUT_CURRENT_MAX:
+ *data = g_variant_new_double(devc->config[channel].output_current_max);
+ break;
+ case SR_CONF_OUTPUT_ENABLED:
+ *data = g_variant_new_boolean(devc->config[channel].output_enabled);
+ break;
+ default:
+ return SR_ERR_NA;
+ }
}
return ret;
}
+static int find_str(const char *str, const char **strings, int array_size)
+{
+ int idx, i;
+
+ idx = -1;
+ for (i = 0; i < array_size; i++) {
+ if (!strcmp(str, strings[i])) {
+ idx = i;
+ break;
+ }
+ }
+
+ return idx;
+}
+
static int config_set(int key, GVariant *data, const struct sr_dev_inst *sdi,
const struct sr_probe_group *probe_group)
{
- int ret;
-
- (void)data;
- (void)probe_group;
+ struct dev_context *devc;
+ struct sr_probe *probe;
+ gdouble dval;
+ int channel, ret, ival;
+ const char *sval;
+ gboolean bval;
if (sdi->status != SR_ST_ACTIVE)
return SR_ERR_DEV_CLOSED;
ret = SR_OK;
- switch (key) {
- /* TODO */
- default:
- ret = SR_ERR_NA;
+ devc = sdi->priv;
+ if (!probe_group) {
+ /* No probe group: global options. */
+ switch (key) {
+ case SR_CONF_OUTPUT_CHANNEL:
+ sval = g_variant_get_string(data, NULL);
+ if ((ival = find_str(sval, channel_modes,
+ ARRAY_SIZE(channel_modes))) == -1) {
+ ret = SR_ERR_ARG;
+ break;
+ }
+ if (devc->model->channel_modes && (1 << ival) == 0) {
+ /* Not supported on this model. */
+ ret = SR_ERR_ARG;
+ }
+ if (ival == devc->channel_mode_set)
+ /* Nothing to do. */
+ break;
+ devc->channel_mode_set = ival;
+ if (devc->acquisition_running)
+ send_config(sdi);
+ break;
+ case SR_CONF_OVER_CURRENT_PROTECTION:
+ bval = g_variant_get_boolean(data);
+ if (bval == devc->over_current_protection_set)
+ /* Nothing to do. */
+ break;
+ devc->over_current_protection_set = bval;
+ if (devc->acquisition_running)
+ send_config(sdi);
+ break;
+ default:
+ return SR_ERR_NA;
+ }
+ } else {
+ /* Probe group specified: per-channel options. */
+ /* We only ever have one channel per probe group in this driver. */
+ probe = probe_group->probes->data;
+ channel = probe->index;
+
+ switch (key) {
+ case SR_CONF_OUTPUT_VOLTAGE_MAX:
+ dval = g_variant_get_double(data);
+ if (dval < 0 || dval > devc->model->channels[channel].voltage[1])
+ ret = SR_ERR_ARG;
+ devc->config[channel].output_voltage_max = dval;
+ if (devc->acquisition_running)
+ send_config(sdi);
+ break;
+ case SR_CONF_OUTPUT_CURRENT_MAX:
+ dval = g_variant_get_double(data);
+ if (dval < 0 || dval > devc->model->channels[channel].current[1])
+ ret = SR_ERR_ARG;
+ devc->config[channel].output_current_max = dval;
+ if (devc->acquisition_running)
+ send_config(sdi);
+ break;
+ case SR_CONF_OUTPUT_ENABLED:
+ bval = g_variant_get_boolean(data);
+ if (bval == devc->config[channel].output_enabled_set)
+ /* Nothing to do. */
+ break;
+ devc->config[channel].output_enabled_set = bval;
+ if (devc->acquisition_running)
+ send_config(sdi);
+ break;
+ default:
+ ret = SR_ERR_NA;
+ }
}
+
return ret;
}
static int config_list(int key, GVariant **data, const struct sr_dev_inst *sdi,
const struct sr_probe_group *probe_group)
{
- int ret;
+ struct dev_context *devc;
+ struct sr_probe *probe;
+ GVariant *gvar;
+ GVariantBuilder gvb;
+ int channel, ret, i;
+
+ /* Always available, even without sdi. */
+ if (key == SR_CONF_SCAN_OPTIONS) {
+ *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
+ hwopts, ARRAY_SIZE(hwopts), sizeof(int32_t));
+ return SR_OK;
+ }
+
+ if (!sdi) {
+ if (key == SR_CONF_DEVICE_OPTIONS) {
+ *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
+ devopts, ARRAY_SIZE(devopts), sizeof(int32_t));
+ return SR_OK;
- (void)sdi;
- (void)data;
- (void)probe_group;
+ } else {
+ /* Everything else needs an sdi. */
+ return SR_ERR_ARG;
+ }
+ }
+ devc = sdi->priv;
ret = SR_OK;
- switch (key) {
- /* TODO */
- default:
- return SR_ERR_NA;
+ if (!probe_group) {
+ /* No probe group: global options. */
+ switch (key) {
+ case SR_CONF_DEVICE_OPTIONS:
+ *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
+ devopts_sdi, ARRAY_SIZE(devopts_sdi), sizeof(int32_t));
+ break;
+ case SR_CONF_OUTPUT_CHANNEL:
+ if (devc->model->channel_modes == CHANMODE_INDEPENDENT) {
+ /* 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));
+ }
+ break;
+ default:
+ return SR_ERR_NA;
+ }
+ } else {
+ /* Probe group specified: per-channel options. */
+ if (!sdi)
+ return SR_ERR_ARG;
+ /* We only ever have one channel per probe group in this driver. */
+ probe = probe_group->probes->data;
+ channel = probe->index;
+
+ switch (key) {
+ case SR_CONF_DEVICE_OPTIONS:
+ *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
+ devopts_pg, ARRAY_SIZE(devopts_pg), 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[channel].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[channel].current[i]);
+ g_variant_builder_add_value(&gvb, gvar);
+ }
+ *data = g_variant_builder_end(&gvb);
+ break;
+ default:
+ return SR_ERR_NA;
+ }
}
return ret;
}
static int dev_acquisition_start(const struct sr_dev_inst *sdi,
- void *cb_data)
+ void *cb_data)
{
- (void)sdi;
+ struct dev_context *devc;
+ struct sr_serial_dev_inst *serial;
+ uint8_t packet[PACKET_SIZE];
+
(void)cb_data;
if (sdi->status != SR_ST_ACTIVE)
return SR_ERR_DEV_CLOSED;
- /* TODO: configure hardware, reset acquisition state, set up
- * callbacks and send header packet. */
+ devc = sdi->priv;
+ memset(devc->packet, 0x44, PACKET_SIZE);
+ devc->packet_size = 0;
+
+ devc->acquisition_running = TRUE;
+
+ serial = sdi->conn;
+ serial_source_add(serial, G_IO_IN, 50, atten_pps3xxx_receive_data, (void *)sdi);
+ std_session_send_df_header(cb_data, LOG_PREFIX);
+
+ /* Send a "probe" configuration packet now. */
+ memset(packet, 0, PACKET_SIZE);
+ packet[0] = 0xaa;
+ packet[1] = 0xaa;
+ send_packet(sdi, packet);
return SR_OK;
}
static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
{
+ struct dev_context *devc;
+
(void)cb_data;
if (sdi->status != SR_ST_ACTIVE)
return SR_ERR_DEV_CLOSED;
- /* TODO: stop acquisition. */
+ devc = sdi->priv;
+ devc->acquisition_running = FALSE;
return SR_OK;
}
-SR_PRIV struct sr_dev_driver atten_pps3xxx_driver_info = {
- .name = "atten-pps3xxx",
- .longname = "Atten PPS3xxx",
+SR_PRIV struct sr_dev_driver atten_pps3203_driver_info = {
+ .name = "atten-pps3203",
+ .longname = "Atten PPS3203T-3S",
.api_version = 1,
.init = init,
.cleanup = cleanup,
- .scan = scan,
+ .scan = scan_3203,
.dev_list = dev_list,
.dev_clear = dev_clear,
.config_get = config_get,
.config_set = config_set,
.config_list = config_list,
- .dev_open = dev_open,
- .dev_close = dev_close,
+ .dev_open = std_serial_dev_open,
+ .dev_close = std_serial_dev_close,
.dev_acquisition_start = dev_acquisition_start,
.dev_acquisition_stop = dev_acquisition_stop,
.priv = NULL,
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
+#include <string.h>
+#include <errno.h>
#include "protocol.h"
+static void dump_packet(char *msg, uint8_t *packet)
+{
+ int i;
+ char str[128];
+
+ str[0] = 0;
+ for (i = 0; i < PACKET_SIZE; i++)
+ sprintf(str + strlen(str), "%.2x ", packet[i]);
+ sr_dbg("%s: %s", msg, str);
+
+}
+
+static void handle_packet(const struct sr_dev_inst *sdi)
+{
+ struct dev_context *devc;
+ struct sr_datafeed_packet packet;
+ struct sr_datafeed_analog analog;
+ float value, data[MAX_CHANNELS];
+ int offset, i;
+
+ devc = sdi->priv;
+ dump_packet("received", devc->packet);
+ packet.type = SR_DF_ANALOG;
+ packet.payload = &analog;
+ analog.probes = sdi->probes;
+ 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++) {
+ offset = 2 + i * 4;
+ value = ((devc->packet[offset] << 8) + devc->packet[offset + 1]) / 100.0;
+ analog.data[i] = value;
+ devc->config[i].output_voltage_last = value;
+ }
+ 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++) {
+ offset = 4 + i * 4;
+ value = ((devc->packet[offset] << 8) + devc->packet[offset + 1]) / 1000.0;
+ analog.data[i] = value;
+ devc->config[i].output_current_last = value;
+ }
+ sr_session_send(sdi, &packet);
+
+ for (i = 0; i < devc->model->num_channels; i++)
+ devc->config[i].output_enabled = (devc->packet[15] & (1 << i)) ? TRUE : FALSE;
+
+ devc->over_current_protection = devc->packet[18] ? TRUE : FALSE;
+ if (devc->packet[19] < 3)
+ devc->channel_mode = devc->packet[19];
+
+}
+
+SR_PRIV void send_packet(const struct sr_dev_inst *sdi, uint8_t *packet)
+{
+ struct sr_serial_dev_inst *serial;
+
+ serial = sdi->conn;
+ if (serial_write(serial, packet, PACKET_SIZE) == -1)
+ sr_dbg("Failed to send packet: %s", strerror(errno));
+ dump_packet("sent", packet);
+}
+
+SR_PRIV void send_config(const struct sr_dev_inst *sdi)
+{
+ struct dev_context *devc;
+ uint8_t packet[PACKET_SIZE];
+ int value, offset, i;
+
+ devc = sdi->priv;
+ memset(packet, 0, PACKET_SIZE);
+ packet[0] = 0xaa;
+ packet[1] = 0x20;
+ packet[14] = 0x01;
+ packet[16] = 0x01;
+ for (i = 0; i < devc->model->num_channels; i++) {
+ offset = 2 + i * 4;
+ value = devc->config[i].output_voltage_max * 100;
+ packet[offset] = (value >> 8) & 0xff;
+ packet[offset + 1] = value & 0xff;
+ value = devc->config[i].output_current_max * 1000;
+ packet[offset + 2] = (value >> 8) & 0xff;
+ packet[offset + 3] = value & 0xff;
+ if (devc->config[i].output_enabled)
+ packet[15] |= 1 << i;
+ }
+ packet[18] = devc->over_current_protection ? 1 : 0;
+ packet[19] = devc->channel_mode;
+ /* Checksum. */
+ value = 0;
+ for (i = 0; i < PACKET_SIZE - 1; i++)
+ value += packet[i];
+ packet[i] = value & 0xff;
+ send_packet(sdi, packet);
+
+}
+
SR_PRIV int atten_pps3xxx_receive_data(int fd, int revents, void *cb_data)
{
- const struct sr_dev_inst *sdi;
struct dev_context *devc;
+ const struct sr_dev_inst *sdi;
+ struct sr_serial_dev_inst *serial;
+ struct sr_datafeed_packet packet;
+ unsigned char c;
(void)fd;
if (!(devc = sdi->priv))
return TRUE;
+ serial = sdi->conn;
if (revents == G_IO_IN) {
- /* TODO */
+ if (serial_read_nonblocking(serial, &c, 1) < 0)
+ return TRUE;
+ devc->packet[devc->packet_size++] = c;
+ if (devc->packet_size == PACKET_SIZE) {
+ handle_packet(sdi);
+ devc->packet_size = 0;
+ if (devc->acquisition_running)
+ send_config(sdi);
+ else {
+ serial_source_remove(serial);
+ packet.type = SR_DF_END;
+ sr_session_send(sdi, &packet);
+ }
+ }
}
return TRUE;
}
+
projects / libsigrok.git / commitdiff