]> sigrok.org Git - libsigrok.git/blobdiff - src/hardware/sysclk-lwla/protocol.c
sysclk-lwla: Clarify function of registers 10B0 to 10BC
[libsigrok.git] / src / hardware / sysclk-lwla / protocol.c
index ccabdddf4ca8d60faf3484a60ecf8a5e6f28515b..5a1522fc9e60e50bfd050d0e15930c437a71788c 100644 (file)
@@ -110,10 +110,10 @@ static int capture_setup(const struct sr_dev_inst *sdi)
                switch (devc->cfg_trigger_slope) {
                case EDGE_POSITIVE:
                        trigger_mask |= (uint64_t)1 << 35;
-                       break; 
+                       break;
                case EDGE_NEGATIVE:
                        trigger_mask |= (uint64_t)1 << 34;
-                       break; 
+                       break;
                }
 
        command[19] = LWLA_WORD_0(trigger_mask);
@@ -132,8 +132,8 @@ static int capture_setup(const struct sr_dev_inst *sdi)
        command[25] = LWLA_WORD_2(memory_limit);
        command[26] = LWLA_WORD_3(memory_limit);
 
-       /* Fill remaining 64-bit words with zeroes. */
-       memset(&command[27], 0, 16 * sizeof(uint16_t));
+       /* Fill remaining words with zeroes. */
+       memset(&command[27], 0, sizeof(command) - 27 * sizeof(command[0]));
 
        return lwla_send_command(sdi->conn, command, ARRAY_SIZE(command));
 }
@@ -305,7 +305,7 @@ static void process_capture_length(const struct sr_dev_inst *sdi)
 
        sr_dbg("%zu words in capture buffer.", acq->mem_addr_fill);
 
-       if (acq->mem_addr_fill > 0 && sdi->status == SR_ST_ACTIVE)
+       if (acq->mem_addr_fill > 0 && !devc->cancel_requested)
                issue_read_start(sdi);
        else
                issue_read_end(sdi);
@@ -327,16 +327,16 @@ static void issue_stop_capture(const struct sr_dev_inst *sdi)
 
        regvals = devc->reg_write_seq;
 
-       regvals[0].reg = REG_CMD_CTRL2;
+       regvals[0].reg = REG_LONG_ADDR;
        regvals[0].val = 10;
 
-       regvals[1].reg = REG_CMD_CTRL3;
+       regvals[1].reg = REG_LONG_LOW;
        regvals[1].val = 0;
 
-       regvals[2].reg = REG_CMD_CTRL4;
+       regvals[2].reg = REG_LONG_HIGH;
        regvals[2].val = 0;
 
-       regvals[3].reg = REG_CMD_CTRL1;
+       regvals[3].reg = REG_LONG_STROBE;
        regvals[3].val = 0;
 
        regvals[4].reg = REG_DIV_BYPASS;
@@ -599,8 +599,7 @@ static void end_acquisition(struct sr_dev_inst *sdi)
 
        lwla_free_acquisition_state(devc->acquisition);
        devc->acquisition = NULL;
-
-       sdi->status = SR_ST_ACTIVE;
+       devc->cancel_requested = FALSE;
 }
 
 /* USB output transfer completion callback.
@@ -631,7 +630,7 @@ static void LIBUSB_CALL receive_transfer_out(struct libusb_transfer *transfer)
                        submit_transfer(devc, devc->acquisition->xfer_in);
                        break;
                case STATE_STOP_CAPTURE:
-                       if (sdi->status == SR_ST_ACTIVE)
+                       if (!devc->cancel_requested)
                                request_capture_length(sdi);
                        else
                                end_acquisition(sdi);
@@ -715,25 +714,25 @@ SR_PRIV int lwla_init_device(const struct sr_dev_inst *sdi)
        if (ret != SR_OK)
                return ret;
 
-       ret = lwla_write_reg(sdi->conn, REG_CMD_CTRL2, 100);
+       ret = lwla_write_reg(sdi->conn, REG_LONG_ADDR, 100);
        if (ret != SR_OK)
                return ret;
 
-       ret = lwla_read_reg(sdi->conn, REG_CMD_CTRL1, &value);
+       ret = lwla_read_reg(sdi->conn, REG_LONG_STROBE, &value);
        if (ret != SR_OK)
                return ret;
        sr_dbg("Received test word 0x%08X back.", value);
        if (value != 0x12345678)
                return SR_ERR;
 
-       ret = lwla_read_reg(sdi->conn, REG_CMD_CTRL4, &value);
+       ret = lwla_read_reg(sdi->conn, REG_LONG_HIGH, &value);
        if (ret != SR_OK)
                return ret;
        sr_dbg("Received test word 0x%08X back.", value);
        if (value != 0x12345678)
                return SR_ERR;
 
-       ret = lwla_read_reg(sdi->conn, REG_CMD_CTRL3, &value);
+       ret = lwla_read_reg(sdi->conn, REG_LONG_LOW, &value);
        if (ret != SR_OK)
                return ret;
        sr_dbg("Received test word 0x%08X back.", value);
@@ -743,65 +742,18 @@ SR_PRIV int lwla_init_device(const struct sr_dev_inst *sdi)
        return ret;
 }
 
-SR_PRIV int lwla_convert_trigger(const struct sr_dev_inst *sdi)
-{
-       struct dev_context *devc;
-       struct sr_trigger *trigger;
-       struct sr_trigger_stage *stage;
-       struct sr_trigger_match *match;
-       const GSList *l, *m;
-       uint64_t channel_index;
-
-       devc = sdi->priv;
-
-       devc->trigger_mask = 0;
-       devc->trigger_values = 0;
-       devc->trigger_edge_mask = 0;
-
-       if (!(trigger = sr_session_trigger_get(sdi->session)))
-               return SR_OK;
-
-       if (g_slist_length(trigger->stages) > 1) {
-               sr_err("This device only supports 1 trigger stage.");
-               return SR_ERR;
-       }
-
-       for (l = trigger->stages; l; l = l->next) {
-               stage = l->data;
-               for (m = stage->matches; m; m = m->next) {
-                       match = m->data;
-                       if (!match->channel->enabled)
-                               /* Ignore disabled channels with a trigger. */
-                               continue;
-                       channel_index = (uint64_t)1 << match->channel->index;
-                       devc->trigger_mask |= channel_index;
-                       switch (match->match) {
-                       case SR_TRIGGER_ONE:
-                               devc->trigger_values |= channel_index;
-                               break;
-                       case SR_TRIGGER_RISING:
-                               devc->trigger_values |= channel_index;
-                               /* Fall through for edge mask. */
-                       case SR_TRIGGER_FALLING:
-                               devc->trigger_edge_mask |= channel_index;
-                               break;
-                       }
-               }
-       }
-
-       return SR_OK;
-}
-
 /* Select the LWLA clock configuration.  If the clock source changed from
  * the previous setting, this will download a new bitstream to the FPGA.
  */
 SR_PRIV int lwla_set_clock_config(const struct sr_dev_inst *sdi)
 {
        struct dev_context *devc;
+       struct drv_context *drvc;
        int ret;
        enum clock_config choice;
 
        devc = sdi->priv;
+       drvc = sdi->driver->context;
 
        if (sdi->status == SR_ST_INACTIVE)
                choice = CONF_CLOCK_NONE;
@@ -814,7 +766,8 @@ SR_PRIV int lwla_set_clock_config(const struct sr_dev_inst *sdi)
 
        if (choice != devc->cur_clock_config) {
                devc->cur_clock_config = CONF_CLOCK_NONE;
-               ret = lwla_send_bitstream(sdi->conn, bitstream_map[choice]);
+               ret = lwla_send_bitstream(drvc->sr_ctx, sdi->conn,
+                                         bitstream_map[choice]);
                if (ret == SR_OK)
                        devc->cur_clock_config = choice;
                return ret;
@@ -880,16 +833,16 @@ SR_PRIV int lwla_setup_acquisition(const struct sr_dev_inst *sdi)
        regvals[1].reg = REG_MEM_CTRL2;
        regvals[1].val = 1;
 
-       regvals[2].reg = REG_CMD_CTRL2;
+       regvals[2].reg = REG_LONG_ADDR;
        regvals[2].val = 10;
 
-       regvals[3].reg = REG_CMD_CTRL3;
+       regvals[3].reg = REG_LONG_LOW;
        regvals[3].val = 0x74;
 
-       regvals[4].reg = REG_CMD_CTRL4;
+       regvals[4].reg = REG_LONG_HIGH;
        regvals[4].val = 0;
 
-       regvals[5].reg = REG_CMD_CTRL1;
+       regvals[5].reg = REG_LONG_STROBE;
        regvals[5].val = 0;
 
        regvals[6].reg = REG_DIV_BYPASS;
@@ -934,16 +887,16 @@ SR_PRIV int lwla_start_acquisition(const struct sr_dev_inst *sdi)
 
        regvals = devc->reg_write_seq;
 
-       regvals[0].reg = REG_CMD_CTRL2;
+       regvals[0].reg = REG_LONG_ADDR;
        regvals[0].val = 10;
 
-       regvals[1].reg = REG_CMD_CTRL3;
+       regvals[1].reg = REG_LONG_LOW;
        regvals[1].val = 1;
 
-       regvals[2].reg = REG_CMD_CTRL4;
+       regvals[2].reg = REG_LONG_HIGH;
        regvals[2].val = 0;
 
-       regvals[3].reg = REG_CMD_CTRL1;
+       regvals[3].reg = REG_LONG_STROBE;
        regvals[3].val = 0;
 
        devc->reg_write_pos = 0;
@@ -1021,7 +974,7 @@ SR_PRIV int lwla_receive_data(int fd, int revents, void *cb_data)
 
        /* If no event flags are set the timeout must have expired. */
        if (revents == 0 && devc->state == STATE_STATUS_WAIT) {
-               if (sdi->status == SR_ST_STOPPING)
+               if (devc->cancel_requested)
                        issue_stop_capture(sdi);
                else
                        request_capture_status(sdi);