* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
+#include <config.h>
#include "protocol.h"
-#include <libserialport.h>
#define SERIALCOMM "115200/8n1"
};
/* Channels are numbered 0-31 (on the PCB silkscreen). */
-SR_PRIV const char *ols_channel_names[NUM_CHANNELS + 1] = {
+SR_PRIV const char *ols_channel_names[] = {
"0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "10", "11", "12",
"13", "14", "15", "16", "17", "18", "19", "20", "21", "22", "23",
"24", "25", "26", "27", "28", "29", "30", "31",
- NULL,
};
/* Default supported samplerates, can be overridden by device metadata. */
SR_HZ(1),
};
-SR_PRIV struct sr_dev_driver ols_driver_info;
-static struct sr_dev_driver *di = &ols_driver_info;
+#define RESPONSE_DELAY_US (10 * 1000)
-static int init(struct sr_context *sr_ctx)
-{
- return std_init(sr_ctx, di, LOG_PREFIX);
-}
-
-static GSList *scan(GSList *options)
+static GSList *scan(struct sr_dev_driver *di, GSList *options)
{
struct sr_config *src;
struct sr_dev_inst *sdi;
- struct drv_context *drvc;
- struct dev_context *devc;
- struct sr_channel *ch;
struct sr_serial_dev_inst *serial;
- GPollFD probefd;
- GSList *l, *devices;
- int ret, i;
+ GSList *l;
+ int ret;
+ unsigned int i;
const char *conn, *serialcomm;
char buf[8];
- drvc = di->priv;
-
- devices = NULL;
-
conn = serialcomm = NULL;
for (l = options; l; l = l->next) {
src = l->data;
if (!conn)
return NULL;
- if (serialcomm == NULL)
+ if (!serialcomm)
serialcomm = SERIALCOMM;
serial = sr_serial_dev_inst_new(conn, serialcomm);
if (serial_open(serial, SERIAL_RDWR) != SR_OK)
return NULL;
- ret = SR_OK;
- for (i = 0; i < 5; i++) {
- if ((ret = send_shortcommand(serial, CMD_RESET)) != SR_OK) {
- sr_err("Port %s is not writable.", conn);
- break;
- }
- }
- if (ret != SR_OK) {
+ if (ols_send_reset(serial) != SR_OK) {
serial_close(serial);
sr_err("Could not use port %s. Quitting.", conn);
return NULL;
}
send_shortcommand(serial, CMD_ID);
- /* Wait 10ms for a response. */
- g_usleep(10000);
-
- sp_get_port_handle(serial->data, &probefd.fd);
- probefd.events = G_IO_IN;
- g_poll(&probefd, 1, 1);
+ g_usleep(RESPONSE_DELAY_US);
- if (probefd.revents != G_IO_IN)
+ if (sp_input_waiting(serial->data) == 0) {
+ sr_dbg("Didn't get any reply.");
return NULL;
- if (serial_read_blocking(serial, buf, 4, serial_timeout(serial, 4)) != 4)
+ }
+
+ ret = serial_read_blocking(serial, buf, 4, serial_timeout(serial, 4));
+ if (ret != 4) {
+ sr_err("Invalid reply (expected 4 bytes, got %d).", ret);
return NULL;
- if (strncmp(buf, "1SLO", 4) && strncmp(buf, "1ALS", 4))
+ }
+
+ if (strncmp(buf, "1SLO", 4) && strncmp(buf, "1ALS", 4)) {
+ sr_err("Invalid reply (expected '1SLO' or '1ALS', got "
+ "'%c%c%c%c').", buf[0], buf[1], buf[2], buf[3]);
return NULL;
+ }
/* Definitely using the OLS protocol, check if it supports
* the metadata command.
*/
send_shortcommand(serial, CMD_METADATA);
- if (g_poll(&probefd, 1, 10) > 0) {
+
+ g_usleep(RESPONSE_DELAY_US);
+
+ if (sp_input_waiting(serial->data) != 0) {
/* Got metadata. */
sdi = get_metadata(serial);
- devc = sdi->priv;
} else {
/* Not an OLS -- some other board that uses the sump protocol. */
sr_info("Device does not support metadata.");
sdi->vendor = g_strdup("Sump");
sdi->model = g_strdup("Logic Analyzer");
sdi->version = g_strdup("v1.0");
- sdi->driver = di;
- for (i = 0; i < 32; i++) {
- ch = sr_channel_new(i, SR_CHANNEL_LOGIC, TRUE,
+ for (i = 0; i < ARRAY_SIZE(ols_channel_names); i++)
+ sr_channel_new(sdi, i, SR_CHANNEL_LOGIC, TRUE,
ols_channel_names[i]);
- sdi->channels = g_slist_append(sdi->channels, ch);
- }
- devc = ols_dev_new();
- sdi->priv = devc;
+ sdi->priv = ols_dev_new();
}
/* Configure samplerate and divider. */
if (ols_set_samplerate(sdi, DEFAULT_SAMPLERATE) != SR_OK)
sdi->inst_type = SR_INST_SERIAL;
sdi->conn = serial;
- drvc->instances = g_slist_append(drvc->instances, sdi);
- devices = g_slist_append(devices, sdi);
-
serial_close(serial);
- return devices;
-}
-
-static GSList *dev_list(void)
-{
- return ((struct drv_context *)(di->priv))->instances;
-}
-
-static int cleanup(void)
-{
- return std_dev_clear(di, NULL);
+ return std_scan_complete(di, g_slist_append(NULL, sdi));
}
static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
(void)cg;
- if (sdi->status != SR_ST_ACTIVE)
- return SR_ERR_DEV_CLOSED;
-
devc = sdi->priv;
switch (key) {
break;
case SR_CONF_CAPTURE_RATIO:
devc->capture_ratio = g_variant_get_uint64(data);
- if (devc->capture_ratio < 0 || devc->capture_ratio > 100) {
- devc->capture_ratio = 0;
+ if (devc->capture_ratio < 0 || devc->capture_ratio > 100)
ret = SR_ERR;
- } else
+ else
ret = SR_OK;
break;
case SR_CONF_EXTERNAL_CLOCK:
return SR_OK;
}
-static int dev_acquisition_start(const struct sr_dev_inst *sdi,
- void *cb_data)
+static int dev_acquisition_start(const struct sr_dev_inst *sdi)
{
struct dev_context *devc;
struct sr_serial_dev_inst *serial;
int num_ols_changrp;
int ret, i;
- if (sdi->status != SR_ST_ACTIVE)
- return SR_ERR_DEV_CLOSED;
-
devc = sdi->priv;
serial = sdi->conn;
return SR_ERR;
}
if (devc->num_stages > 0) {
+ /*
+ * According to http://mygizmos.org/ols/Logic-Sniffer-FPGA-Spec.pdf
+ * reset command must be send prior each arm command
+ */
+ sr_dbg("Send reset command before trigger configure");
+ if (ols_send_reset(serial) != SR_OK)
+ return SR_ERR;
+
delaycount = readcount * (1 - devc->capture_ratio / 100.0);
devc->trigger_at = (readcount - delaycount) * 4 - devc->num_stages;
for (i = 0; i <= devc->num_stages; i++) {
devc->cnt_bytes = devc->cnt_samples = devc->cnt_samples_rle = 0;
memset(devc->sample, 0, 4);
- /* Send header packet to the session bus. */
- std_session_send_df_header(cb_data, LOG_PREFIX);
+ std_session_send_df_header(sdi);
- serial_source_add(sdi->session, serial, G_IO_IN, -1,
- ols_receive_data, cb_data);
+ /* If the device stops sending for longer than it takes to send a byte,
+ * that means it's finished. But wait at least 100 ms to be safe.
+ */
+ serial_source_add(sdi->session, serial, G_IO_IN, 100,
+ ols_receive_data, (struct sr_dev_inst *)sdi);
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;
-
abort_acquisition(sdi);
return SR_OK;
}
-SR_PRIV struct sr_dev_driver ols_driver_info = {
+static struct sr_dev_driver ols_driver_info = {
.name = "ols",
.longname = "Openbench Logic Sniffer",
.api_version = 1,
- .init = init,
- .cleanup = cleanup,
+ .init = std_init,
+ .cleanup = std_cleanup,
.scan = scan,
- .dev_list = dev_list,
+ .dev_list = std_dev_list,
.dev_clear = NULL,
.config_get = config_get,
.config_set = config_set,
.dev_close = std_serial_dev_close,
.dev_acquisition_start = dev_acquisition_start,
.dev_acquisition_stop = dev_acquisition_stop,
- .priv = NULL,
+ .context = NULL,
};
+SR_REGISTER_DEV_DRIVER(ols_driver_info);
projects / libsigrok.git / blobdiff