X-Git-Url: https://sigrok.org/gitweb/?p=libsigrok.git;a=blobdiff_plain;f=src%2Fhardware%2Fopenbench-logic-sniffer%2Fprotocol.c;h=36a091c731d83ff2b7b9f4582dee87db7524e856;hp=a20d674b2bea7755a41725a68727ca6860e7199c;hb=0ccc6f7cdf3ce1a3ac1f9116b1524f2b326dd6be;hpb=aed4ad0beaf64062752039a13f9a95326aa1df87
diff --git a/src/hardware/openbench-logic-sniffer/protocol.c b/src/hardware/openbench-logic-sniffer/protocol.c
index a20d674b..36a091c7 100644
--- a/src/hardware/openbench-logic-sniffer/protocol.c
+++ b/src/hardware/openbench-logic-sniffer/protocol.c
@@ -17,11 +17,8 @@
* along with this program. If not, see .
*/
+#include
#include "protocol.h"
-#include
-
-extern SR_PRIV struct sr_dev_driver ols_driver_info;
-static struct sr_dev_driver *di = &ols_driver_info;
SR_PRIV int send_shortcommand(struct sr_serial_dev_inst *serial,
uint8_t command)
@@ -30,7 +27,10 @@ SR_PRIV int send_shortcommand(struct sr_serial_dev_inst *serial,
sr_dbg("Sending cmd 0x%.2x.", command);
buf[0] = command;
- if (serial_write_blocking(serial, buf, 1) != 1)
+ if (serial_write_blocking(serial, buf, 1, serial_timeout(serial, 1)) != 1)
+ return SR_ERR;
+
+ if (serial_drain(serial) != 0)
return SR_ERR;
return SR_OK;
@@ -48,12 +48,27 @@ SR_PRIV int send_longcommand(struct sr_serial_dev_inst *serial,
buf[2] = data[1];
buf[3] = data[2];
buf[4] = data[3];
- if (serial_write_blocking(serial, buf, 5) != 5)
+ if (serial_write_blocking(serial, buf, 5, serial_timeout(serial, 1)) != 5)
+ return SR_ERR;
+
+ if (serial_drain(serial) != 0)
return SR_ERR;
return SR_OK;
}
+SR_PRIV int ols_send_reset(struct sr_serial_dev_inst *serial)
+{
+ unsigned int i;
+
+ for (i = 0; i < 5; i++) {
+ if (send_shortcommand(serial, CMD_RESET) != SR_OK)
+ return SR_ERR;
+ }
+
+ return SR_OK;
+}
+
/* Configures the channel mask based on which channels are enabled. */
SR_PRIV void ols_channel_mask(const struct sr_dev_inst *sdi)
{
@@ -118,35 +133,58 @@ SR_PRIV struct dev_context *ols_dev_new(void)
{
struct dev_context *devc;
- if (!(devc = g_try_malloc(sizeof(struct dev_context)))) {
- sr_err("Device context malloc failed.");
- return NULL;
- }
-
- /* Device-specific settings */
- devc->max_samples = devc->max_samplerate = devc->protocol_version = 0;
-
- /* Acquisition settings */
- devc->limit_samples = devc->capture_ratio = 0;
+ devc = g_malloc0(sizeof(struct dev_context));
devc->trigger_at = -1;
- devc->channel_mask = 0xffffffff;
- devc->flag_reg = 0;
return devc;
}
+static void ols_channel_new(struct sr_dev_inst *sdi, int num_chan)
+{
+ struct dev_context *devc = sdi->priv;
+ int i;
+
+ for (i = 0; i < num_chan; i++)
+ sr_channel_new(sdi, i, SR_CHANNEL_LOGIC, TRUE,
+ ols_channel_names[i]);
+
+ devc->max_channels = num_chan;
+}
+
+static void metadata_quirks(struct sr_dev_inst *sdi)
+{
+ struct dev_context *devc;
+ gboolean is_shrimp;
+
+ if (!sdi)
+ return;
+ devc = sdi->priv;
+ if (!devc)
+ return;
+
+ is_shrimp = sdi->model && strcmp(sdi->model, "Shrimp1.0") == 0;
+ if (is_shrimp) {
+ if (!devc->max_channels)
+ ols_channel_new(sdi, 4);
+ if (!devc->max_samples)
+ devc->max_samples = 256 * 1024;
+ if (!devc->max_samplerate)
+ devc->max_samplerate = SR_MHZ(20);
+ }
+}
+
SR_PRIV struct sr_dev_inst *get_metadata(struct sr_serial_dev_inst *serial)
{
struct sr_dev_inst *sdi;
struct dev_context *devc;
- struct sr_channel *ch;
- uint32_t tmp_int, ui;
+ uint32_t tmp_int;
uint8_t key, type, token;
+ int delay_ms;
GString *tmp_str, *devname, *version;
guchar tmp_c;
- sdi = sr_dev_inst_new(SR_ST_INACTIVE, NULL, NULL, NULL);
- sdi->driver = di;
+ sdi = g_malloc0(sizeof(struct sr_dev_inst));
+ sdi->status = SR_ST_INACTIVE;
devc = ols_dev_new();
sdi->priv = devc;
@@ -155,7 +193,8 @@ SR_PRIV struct sr_dev_inst *get_metadata(struct sr_serial_dev_inst *serial)
key = 0xff;
while (key) {
- if (serial_read_blocking(serial, &key, 1) != 1)
+ delay_ms = serial_timeout(serial, 1);
+ if (serial_read_blocking(serial, &key, 1, delay_ms) != 1)
break;
if (key == 0x00) {
sr_dbg("Got metadata key 0x00, metadata ends.");
@@ -167,7 +206,8 @@ SR_PRIV struct sr_dev_inst *get_metadata(struct sr_serial_dev_inst *serial)
case 0:
/* NULL-terminated string */
tmp_str = g_string_new("");
- while (serial_read_blocking(serial, &tmp_c, 1) == 1 && tmp_c != '\0')
+ delay_ms = serial_timeout(serial, 1);
+ while (serial_read_blocking(serial, &tmp_c, 1, delay_ms) == 1 && tmp_c != '\0')
g_string_append_c(tmp_str, tmp_c);
sr_dbg("Got metadata key 0x%.2x value '%s'.",
key, tmp_str->str);
@@ -199,7 +239,8 @@ SR_PRIV struct sr_dev_inst *get_metadata(struct sr_serial_dev_inst *serial)
break;
case 1:
/* 32-bit unsigned integer */
- if (serial_read_blocking(serial, &tmp_int, 4) != 4)
+ delay_ms = serial_timeout(serial, 4);
+ if (serial_read_blocking(serial, &tmp_int, 4, delay_ms) != 4)
break;
tmp_int = RB32(&tmp_int);
sr_dbg("Got metadata key 0x%.2x value 0x%.8x.",
@@ -207,12 +248,7 @@ SR_PRIV struct sr_dev_inst *get_metadata(struct sr_serial_dev_inst *serial)
switch (token) {
case 0x00:
/* Number of usable channels */
- for (ui = 0; ui < tmp_int; ui++) {
- if (!(ch = sr_channel_new(ui, SR_CHANNEL_LOGIC, TRUE,
- ols_channel_names[ui])))
- return 0;
- sdi->channels = g_slist_append(sdi->channels, ch);
- }
+ ols_channel_new(sdi, tmp_int);
break;
case 0x01:
/* Amount of sample memory available (bytes) */
@@ -223,7 +259,7 @@ SR_PRIV struct sr_dev_inst *get_metadata(struct sr_serial_dev_inst *serial)
/* what is this for? */
break;
case 0x03:
- /* Maximum sample rate (hz) */
+ /* Maximum sample rate (Hz) */
devc->max_samplerate = tmp_int;
break;
case 0x04:
@@ -238,19 +274,15 @@ SR_PRIV struct sr_dev_inst *get_metadata(struct sr_serial_dev_inst *serial)
break;
case 2:
/* 8-bit unsigned integer */
- if (serial_read_blocking(serial, &tmp_c, 1) != 1)
+ delay_ms = serial_timeout(serial, 1);
+ if (serial_read_blocking(serial, &tmp_c, 1, delay_ms) != 1)
break;
sr_dbg("Got metadata key 0x%.2x value 0x%.2x.",
key, tmp_c);
switch (token) {
case 0x00:
/* Number of usable channels */
- for (ui = 0; ui < tmp_c; ui++) {
- if (!(ch = sr_channel_new(ui, SR_CHANNEL_LOGIC, TRUE,
- ols_channel_names[ui])))
- return 0;
- sdi->channels = g_slist_append(sdi->channels, ch);
- }
+ ols_channel_new(sdi, tmp_c);
break;
case 0x01:
/* protocol version */
@@ -273,6 +305,9 @@ SR_PRIV struct sr_dev_inst *get_metadata(struct sr_serial_dev_inst *serial)
g_string_free(devname, FALSE);
g_string_free(version, FALSE);
+ /* Optionally amend received metadata, model specific quirks. */
+ metadata_quirks(sdi);
+
return sdi;
}
@@ -289,13 +324,11 @@ SR_PRIV int ols_set_samplerate(const struct sr_dev_inst *sdi,
sr_info("Enabling demux mode.");
devc->flag_reg |= FLAG_DEMUX;
devc->flag_reg &= ~FLAG_FILTER;
- devc->max_channels = NUM_CHANNELS / 2;
devc->cur_samplerate_divider = (CLOCK_RATE * 2 / samplerate) - 1;
} else {
sr_info("Disabling demux mode.");
devc->flag_reg &= ~FLAG_DEMUX;
devc->flag_reg |= FLAG_FILTER;
- devc->max_channels = NUM_CHANNELS;
devc->cur_samplerate_divider = (CLOCK_RATE / samplerate) - 1;
}
@@ -314,15 +347,12 @@ SR_PRIV int ols_set_samplerate(const struct sr_dev_inst *sdi,
SR_PRIV void abort_acquisition(const struct sr_dev_inst *sdi)
{
- struct sr_datafeed_packet packet;
struct sr_serial_dev_inst *serial;
serial = sdi->conn;
serial_source_remove(sdi->session, serial);
- /* Terminate session */
- packet.type = SR_DF_END;
- sr_session_send(sdi, &packet);
+ std_session_send_df_end(sdi);
}
SR_PRIV int ols_receive_data(int fd, int revents, void *cb_data)
@@ -343,16 +373,12 @@ SR_PRIV int ols_receive_data(int fd, int revents, void *cb_data)
serial = sdi->conn;
devc = sdi->priv;
+ if (devc->num_transfers == 0 && revents == 0) {
+ /* Ignore timeouts as long as we haven't received anything */
+ return TRUE;
+ }
+
if (devc->num_transfers++ == 0) {
- /*
- * First time round, means the device started sending data,
- * and will not stop until done. If it stops sending for
- * longer than it takes to send a byte, that means it's
- * finished. We'll double that to 30ms to be sure...
- */
- serial_source_remove(sdi->session, serial);
- serial_source_add(sdi->session, serial, G_IO_IN, 30,
- ols_receive_data, cb_data);
devc->raw_sample_buf = g_try_malloc(devc->limit_samples * 4);
if (!devc->raw_sample_buf) {
sr_err("Sample buffer malloc failed.");
@@ -363,7 +389,7 @@ SR_PRIV int ols_receive_data(int fd, int revents, void *cb_data)
}
num_ols_changrp = 0;
- for (i = NUM_CHANNELS; i > 0x02; i /= 2) {
+ for (i = 0x20; i > 0x02; i >>= 1) {
if ((devc->flag_reg & i) == 0) {
num_ols_changrp++;
}
@@ -478,12 +504,11 @@ SR_PRIV int ols_receive_data(int fd, int revents, void *cb_data)
logic.unitsize = 4;
logic.data = devc->raw_sample_buf +
(devc->limit_samples - devc->num_samples) * 4;
- sr_session_send(cb_data, &packet);
+ sr_session_send(sdi, &packet);
}
/* Send the trigger. */
- packet.type = SR_DF_TRIGGER;
- sr_session_send(cb_data, &packet);
+ std_session_send_df_trigger(sdi);
/* Send post-trigger samples. */
packet.type = SR_DF_LOGIC;
@@ -492,7 +517,7 @@ SR_PRIV int ols_receive_data(int fd, int revents, void *cb_data)
logic.unitsize = 4;
logic.data = devc->raw_sample_buf + devc->trigger_at * 4 +
(devc->limit_samples - devc->num_samples) * 4;
- sr_session_send(cb_data, &packet);
+ sr_session_send(sdi, &packet);
} else {
/* no trigger was used */
packet.type = SR_DF_LOGIC;
@@ -501,7 +526,7 @@ SR_PRIV int ols_receive_data(int fd, int revents, void *cb_data)
logic.unitsize = 4;
logic.data = devc->raw_sample_buf +
(devc->limit_samples - devc->num_samples) * 4;
- sr_session_send(cb_data, &packet);
+ sr_session_send(sdi, &packet);
}
g_free(devc->raw_sample_buf);