#include <config.h>
#include "protocol.h"
+#define REQ_TIMEOUT_MS 500
+#define DEVICE_PROCESSING_TIME_MS 80
+
+SR_PRIV int korad_kdxxxxp_send_cmd(struct sr_serial_dev_inst *serial,
+ const char *cmd)
+{
+ int ret;
+
+ sr_dbg("Sending '%s'.", cmd);
+ if ((ret = serial_write_blocking(serial, cmd, strlen(cmd), 0)) < 0) {
+ sr_err("Error sending command: %d.", ret);
+ return ret;
+ }
+
+ return ret;
+}
+
+SR_PRIV int korad_kdxxxxp_read_chars(struct sr_serial_dev_inst *serial,
+ int count, char *buf)
+{
+ int ret, received, turns;
+
+ received = 0;
+ turns = 0;
+
+ do {
+ if ((ret = serial_read_blocking(serial, buf + received,
+ count - received,
+ serial_timeout(serial, count))) < 0) {
+ sr_err("Error %d reading %d bytes from device.",
+ ret, count);
+ return ret;
+ }
+ received += ret;
+ turns++;
+ } while ((received < count) && (turns < 100));
+
+ buf[count] = 0;
+
+ sr_spew("Received: '%s'.", buf);
+
+ return ret;
+}
+
+static void give_device_time_to_process(struct dev_context *devc)
+{
+ int64_t sleeping_time;
+
+ sleeping_time = devc->req_sent_at + (DEVICE_PROCESSING_TIME_MS * 1000);
+ sleeping_time -= g_get_monotonic_time();
+
+ if (sleeping_time > 0) {
+ g_usleep(sleeping_time);
+ sr_spew("Sleeping for processing %" PRIi64 " usec", sleeping_time);
+ }
+}
+
+SR_PRIV int korad_kdxxxxp_set_value(struct sr_serial_dev_inst *serial,
+ struct dev_context *devc)
+{
+ char msg[21];
+ const char *cmd;
+ float value;
+ int ret;
+
+ give_device_time_to_process(devc);
+
+ msg[20] = 0;
+ switch(devc->target){
+ case KDXXXXP_CURRENT:
+ case KDXXXXP_VOLTAGE:
+ case KDXXXXP_STATUS:
+ sr_err("Can't set measurable parameter.");
+ return SR_ERR;
+ case KDXXXXP_CURRENT_MAX:
+ cmd = "ISET1:%05.3f";
+ value = devc->current_max;
+ break;
+ case KDXXXXP_VOLTAGE_MAX:
+ cmd = "VSET1:%05.2f";
+ value = devc->voltage_max;
+ break;
+ case KDXXXXP_OUTPUT:
+ cmd = "OUT%01.0f";
+ value = (devc->output_enabled) ? 1 : 0;
+ break;
+ case KDXXXXP_BEEP:
+ cmd = "BEEP%01.0f";
+ value = (devc->beep_enabled) ? 1 : 0;
+ break;
+ case KDXXXXP_OCP:
+ cmd = "OCP%01.0f";
+ value = (devc->ocp_enabled) ? 1 : 0;
+ break;
+ case KDXXXXP_OVP:
+ cmd = "OVP%01.0f";
+ value = (devc->ovp_enabled) ? 1 : 0;
+ break;
+ case KDXXXXP_SAVE:
+ cmd = "SAV%01.0f";
+ if (devc->program < 1 || devc->program > 5) {
+ sr_err("Only programs 1-5 supported and %d isn't "
+ "between them.", devc->program);
+ return SR_ERR;
+ }
+ value = devc->program;
+ break;
+ case KDXXXXP_RECALL:
+ cmd = "RCL%01.0f";
+ if (devc->program < 1 || devc->program > 5) {
+ sr_err("Only programs 1-5 supported and %d isn't "
+ "between them.", devc->program);
+ return SR_ERR;
+ }
+ value = devc->program;
+ break;
+ default:
+ sr_err("Don't know how to set %d.", devc->target);
+ return SR_ERR;
+ }
+
+ if (cmd)
+ snprintf(msg, 20, cmd, value);
+
+ ret = korad_kdxxxxp_send_cmd(serial, msg);
+ devc->req_sent_at = g_get_monotonic_time();
+ devc->reply_pending = FALSE;
+
+ return ret;
+}
+
+SR_PRIV int korad_kdxxxxp_query_value(struct sr_serial_dev_inst *serial,
+ struct dev_context *devc)
+{
+ int ret;
+
+ give_device_time_to_process(devc);
+
+ switch(devc->target){
+ case KDXXXXP_CURRENT:
+ /* Read current from device. */
+ ret = korad_kdxxxxp_send_cmd(serial, "IOUT1?");
+ break;
+ case KDXXXXP_CURRENT_MAX:
+ /* Read set current from device. */
+ ret = korad_kdxxxxp_send_cmd(serial, "ISET1?");
+ break;
+ case KDXXXXP_VOLTAGE:
+ /* Read voltage from device. */
+ ret = korad_kdxxxxp_send_cmd(serial, "VOUT1?");
+ break;
+ case KDXXXXP_VOLTAGE_MAX:
+ /* Read set voltage from device. */
+ ret = korad_kdxxxxp_send_cmd(serial, "VSET1?");
+ break;
+ case KDXXXXP_STATUS:
+ case KDXXXXP_OUTPUT:
+ /* Read status from device. */
+ ret = korad_kdxxxxp_send_cmd(serial, "STATUS?");
+ break;
+ default:
+ sr_err("Don't know how to query %d.", devc->target);
+ return SR_ERR;
+ }
+
+ devc->req_sent_at = g_get_monotonic_time();
+ devc->reply_pending = TRUE;
+
+ return ret;
+}
+
+SR_PRIV int korad_kdxxxxp_get_all_values(struct sr_serial_dev_inst *serial,
+ struct dev_context *devc)
+{
+ int ret;
+
+ for (devc->target = KDXXXXP_CURRENT;
+ devc->target <= KDXXXXP_STATUS; devc->target++) {
+ if ((ret = korad_kdxxxxp_query_value(serial, devc)) < 0)
+ return ret;
+ if ((ret = korad_kdxxxxp_get_reply(serial, devc)) < 0)
+ return ret;
+ }
+
+ return ret;
+}
+
+SR_PRIV int korad_kdxxxxp_get_reply(struct sr_serial_dev_inst *serial,
+ struct dev_context *devc)
+{
+ double value;
+ int count, ret, i;
+ float *target;
+ char status_byte;
+
+ target = NULL;
+ count = 5;
+
+ switch (devc->target) {
+ case KDXXXXP_CURRENT:
+ /* Read current from device. */
+ target = &(devc->current);
+ break;
+ case KDXXXXP_CURRENT_MAX:
+ /* Read set current from device. */
+ target = &(devc->current_max);
+ break;
+ case KDXXXXP_VOLTAGE:
+ /* Read voltage from device. */
+ target = &(devc->voltage);
+ break;
+ case KDXXXXP_VOLTAGE_MAX:
+ /* Read set voltage from device. */
+ target = &(devc->voltage_max);
+ break;
+ case KDXXXXP_STATUS:
+ case KDXXXXP_OUTPUT:
+ /* Read status from device. */
+ count = 1;
+ break;
+ default:
+ sr_err("Don't know where to put repply %d.", devc->target);
+ }
+
+ if ((ret = korad_kdxxxxp_read_chars(serial, count, devc->reply)) < 0)
+ return ret;
+
+ devc->reply[count] = 0;
+
+ if (target) {
+ /* Handle the strange 'M'. */
+ if (devc->reply[0] == 'M') {
+ for (i = 1; i < count; i++)
+ devc->reply[i - 1] = devc->reply[i];
+ /* Get the last character. */
+ if ((i = korad_kdxxxxp_read_chars(serial, 1,
+ &(devc->reply[count]))) < 0)
+ return i;
+ }
+ value = g_ascii_strtod(devc->reply, NULL);
+ *target = (float)value;
+ sr_dbg("value: %f",value);
+ } else {
+ /* We have status reply. */
+ status_byte = devc->reply[0];
+ /* Constant current */
+ devc->cc_mode[0] = !(status_byte & (1 << 0)); /* Channel one */
+ devc->cc_mode[1] = !(status_byte & (1 << 1)); /* Channel two */
+ /*
+ * Tracking
+ * status_byte & ((1 << 2) | (1 << 3))
+ * 00 independent 01 series 11 parallel
+ */
+ devc->beep_enabled = (1 << 4);
+ devc->ocp_enabled = (status_byte & (1 << 5));
+ devc->output_enabled = (status_byte & (1 << 6));
+ /* Velleman LABPS3005 quirk */
+ if (devc->output_enabled)
+ devc->ovp_enabled = (status_byte & (1 << 7));
+ sr_dbg("Status: 0x%02x", status_byte);
+ sr_spew("Status: CH1: constant %s CH2: constant %s. "
+ "Tracking would be %s. Device is "
+ "%s and %s. Buttons are %s. Output is %s "
+ "and extra byte is %s.",
+ (status_byte & (1 << 0)) ? "voltage" : "current",
+ (status_byte & (1 << 1)) ? "voltage" : "current",
+ (status_byte & (1 << 2)) ? "parallel" : "series",
+ (status_byte & (1 << 3)) ? "tracking" : "independent",
+ (status_byte & (1 << 4)) ? "beeping" : "silent",
+ (status_byte & (1 << 5)) ? "locked" : "unlocked",
+ (status_byte & (1 << 6)) ? "enabled" : "disabled",
+ (status_byte & (1 << 7)) ? "true" : "false");
+ }
+
+ devc->reply_pending = FALSE;
+
+ return ret;
+}
+
+static void next_measurement(struct dev_context *devc)
+{
+ switch (devc->target) {
+ case KDXXXXP_CURRENT:
+ devc->target = KDXXXXP_VOLTAGE;
+ break;
+ case KDXXXXP_CURRENT_MAX:
+ devc->target = KDXXXXP_CURRENT;
+ break;
+ case KDXXXXP_VOLTAGE:
+ devc->target = KDXXXXP_STATUS;
+ break;
+ case KDXXXXP_VOLTAGE_MAX:
+ devc->target = KDXXXXP_CURRENT;
+ break;
+ /* Read back what was set. */
+ case KDXXXXP_BEEP:
+ case KDXXXXP_OCP:
+ case KDXXXXP_OVP:
+ case KDXXXXP_OUTPUT:
+ devc->target = KDXXXXP_STATUS;
+ break;
+ case KDXXXXP_STATUS:
+ devc->target = KDXXXXP_CURRENT;
+ break;
+ default:
+ devc->target = KDXXXXP_CURRENT;
+ }
+}
+
SR_PRIV int korad_kdxxxxp_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 sr_serial_dev_inst *serial;
+ struct sr_datafeed_packet packet;
+ struct sr_datafeed_analog_old analog;
+ int64_t t, elapsed_us;
(void)fd;
if (!(devc = sdi->priv))
return TRUE;
+ serial = sdi->conn;
+
if (revents == G_IO_IN) {
- /* TODO */
+ /* Get the value. */
+ korad_kdxxxxp_get_reply(serial, devc);
+
+ /* Send the value forward. */
+ packet.type = SR_DF_ANALOG_OLD;
+ packet.payload = &analog;
+ analog.channels = sdi->channels;
+ analog.num_samples = 1;
+ if (devc->target == KDXXXXP_CURRENT) {
+ analog.mq = SR_MQ_CURRENT;
+ analog.unit = SR_UNIT_AMPERE;
+ analog.mqflags = 0;
+ analog.data = &devc->current;
+ sr_session_send(sdi, &packet);
+ }
+ if (devc->target == KDXXXXP_VOLTAGE) {
+ analog.mq = SR_MQ_VOLTAGE;
+ analog.unit = SR_UNIT_VOLT;
+ analog.mqflags = SR_MQFLAG_DC;
+ analog.data = &devc->voltage;
+ sr_session_send(sdi, &packet);
+ devc->num_samples++;
+ }
+ next_measurement(devc);
+ } else {
+ /* Time out */
+ if (!devc->reply_pending) {
+ if (korad_kdxxxxp_query_value(serial, devc) < 0)
+ return TRUE;
+ devc->req_sent_at = g_get_monotonic_time();
+ devc->reply_pending = TRUE;
+ }
+ }
+
+ if (devc->limit_samples && (devc->num_samples >= devc->limit_samples)) {
+ sr_info("Requested number of samples reached.");
+ sdi->driver->dev_acquisition_stop(sdi, cb_data);
+ return TRUE;
+ }
+
+ if (devc->limit_msec) {
+ t = (g_get_monotonic_time() - devc->starttime) / 1000;
+ if (t > (int64_t)devc->limit_msec) {
+ sr_info("Requested time limit reached.");
+ sdi->driver->dev_acquisition_stop(sdi, cb_data);
+ return TRUE;
+ }
+ }
+
+ /* Request next packet, if required. */
+ if (sdi->status == SR_ST_ACTIVE) {
+ if (devc->reply_pending) {
+ elapsed_us = g_get_monotonic_time() - devc->req_sent_at;
+ if (elapsed_us > (REQ_TIMEOUT_MS * 1000))
+ devc->reply_pending = FALSE;
+ return TRUE;
+ }
+
}
return TRUE;
projects / libsigrok.git / blobdiff