triggering works, also autotrig

framework/unit_registry.c

@@ -490,6 +490,11 @@ void ureg_deliver_unit_request(TF_Msg *msg)
             if (pUnit->callsign == callsign && pUnit->status == E_SUCCESS) {
                 error_t rv = pUnit->driver->handleRequest(pUnit, msg->frame_id, command, &pp);
 
+                if (!pp.ok) {
+                    com_respond_error(msg->frame_id, E_MALFORMED_COMMAND);
+                    goto quit;
+                }
+
                 // send extra SUCCESS confirmation message.
                 // error is expected to have already been reported.
                 if (rv == E_SUCCESS) {

units/adc/_adc_core.c

@@ -51,27 +51,37 @@ void UADC_DMA_Handler(void *arg)
                     LL_DMA_ClearFlag_TC(priv->DMAx, priv->dma_chnum);
                 }
 
-                assert_param(start < end);
+                dbg("start %d, end %d", (int)start, (int)end);
+                assert_param(start <= end);
 
-                uint32_t sgcount = (end - start) / priv->nb_channels;
+                if (start != end) {
+                    uint32_t sgcount = (end - start) / priv->nb_channels;
 
-                if (m_trig || m_fixcpt) {
+                    if (m_trig || m_fixcpt) {
-                    sgcount = MIN(priv->trig_stream_remain, sgcount);
+                        sgcount = MIN(priv->trig_stream_remain, sgcount);
-                    priv->trig_stream_remain -= sgcount;
+                        priv->trig_stream_remain -= sgcount;
-                }
-
-                dbg("Would send %d groups (u16 offset %d -> %d)", (int)sgcount, (int)start, (int)(start+sgcount*priv->nb_channels));
-                // TODO send the data together with remaining count (used to detect end of transmission)
-
-                if (m_trig || m_fixcpt) {
-                    if (priv->trig_stream_remain == 0) {
-                        dbg("End of capture");
-                        UADC_ReportEndOfStream(unit);
-                        UADC_SwitchMode(unit, (priv->auto_rearm && m_trig) ? ADC_OPMODE_ARMED : ADC_OPMODE_IDLE);
                     }
+
+                    dbg("Would send %d groups (u16 offset %d -> %d)", (int) sgcount,
+                        (int) start, (int) (start + sgcount * priv->nb_channels));
+
+                    // TODO send the data together with remaining count (used to detect end of transmission)
+
+                    if (m_trig || m_fixcpt) {
+                        if (priv->trig_stream_remain == 0) {
+                            dbg("End of capture");
+                            UADC_ReportEndOfStream(unit);
+                            UADC_SwitchMode(unit, ADC_OPMODE_IDLE);
+                            if (priv->auto_rearm && m_trig) {
+                                UADC_SwitchMode(unit, ADC_OPMODE_ARMED);
+                            }
+                        }
+                    }
+                } else {
+                    dbg("start==end, skip this irq");
                 }
 
-                if (end == priv->dma_buffer_itemcount) {
+                if (tc) {
                     priv->stream_startpos = 0;
                 }
                 else {
@@ -181,11 +191,13 @@ void UADC_HandleTrigger(Unit *unit, uint8_t edge_type, uint64_t timestamp)
         unit->_tick_cnt = 0;
     }
 
-    dbg("Trigger condition hit, edge=%d", edge_type);
     // TODO Send pre-trigger
 
     priv->stream_startpos = (uint16_t) DMA_POS(priv);
     priv->trig_stream_remain = priv->trig_len;
+
+    dbg("Trigger condition hit, edge=%d, startpos %d", edge_type, (int)priv->stream_startpos);
+
     UADC_SwitchMode(unit, ADC_OPMODE_TRIGD);
 }
 
@@ -288,6 +300,7 @@ void UADC_SwitchMode(Unit *unit, enum uadc_opmode new_mode)
         LL_DMA_DisableIT_TC(priv->DMAx, priv->dma_chnum);
 
         // Use End Of Sequence to recover results for averaging from the DMA buffer and DR
+        LL_ADC_ClearFlag_EOS(priv->ADCx);
         LL_ADC_EnableIT_EOS(priv->ADCx);
 
         if (priv->opmode == ADC_OPMODE_UNINIT) {
@@ -315,6 +328,11 @@ void UADC_SwitchMode(Unit *unit, enum uadc_opmode new_mode)
         LL_ADC_DisableIT_EOS(priv->ADCx);
 
         // Enable the DMA buffer interrupts
+
+        // we must first clear the flags, otherwise it will cause WEIRD bugs in the handler
+        LL_DMA_ClearFlag_HT(priv->DMAx, priv->dma_chnum);
+        LL_DMA_ClearFlag_TC(priv->DMAx, priv->dma_chnum);
+
         LL_DMA_EnableIT_HT(priv->DMAx, priv->dma_chnum);
         LL_DMA_EnableIT_TC(priv->DMAx, priv->dma_chnum);
     }

units/adc/unit_adc.c

@@ -39,7 +39,6 @@ static error_t UADC_handleRequest(Unit *unit, TF_ID frame_id, uint8_t command, P
          * Response: bytes with indices of enabled channels, ascending order.
          */
         case CMD_GET_ENABLED_CHANNELS:
-            dbg("> Query channels");
             for (uint8_t i = 0; i < 18; i++) {
                 if (priv->extended_channels_mask & (1 << i)) {
                     pb_u8(&pb, i);
@@ -53,10 +52,11 @@ static error_t UADC_handleRequest(Unit *unit, TF_ID frame_id, uint8_t command, P
          * pld: u16:factor
          */
         case CMD_SET_SMOOTHING_FACTOR:
-            dbg("> Set smoothing");
+            {
-            uint16_t fac = pp_u16(pp);
+                uint16_t fac = pp_u16(pp);
-            if (fac > 1000) return E_BAD_VALUE;
+                if (fac > 1000) return E_BAD_VALUE;
-            priv->avg_factor_as_float = fac/1000.0f;
+                priv->avg_factor_as_float = fac / 1000.0f;
+            }
             return E_SUCCESS;
 
         /**
@@ -64,7 +64,6 @@ static error_t UADC_handleRequest(Unit *unit, TF_ID frame_id, uint8_t command, P
          * Response: interleaved (u8:channel, u16:value) for all channels
          */
         case CMD_READ_RAW:
-            dbg("> Read raw");
             if(priv->opmode != ADC_OPMODE_IDLE && priv->opmode != ADC_OPMODE_ARMED) {
                 return E_BUSY;
             }
@@ -75,7 +74,6 @@ static error_t UADC_handleRequest(Unit *unit, TF_ID frame_id, uint8_t command, P
                     pb_u16(&pb, priv->last_samples[i]);
                 }
             }
-            assert_param(pb.ok);
             com_respond_pb(frame_id, MSG_SUCCESS, &pb);
             return E_SUCCESS;
 
@@ -84,7 +82,6 @@ static error_t UADC_handleRequest(Unit *unit, TF_ID frame_id, uint8_t command, P
          * Response: interleaved (u8:channel, f32:value) for all channels
          */
         case CMD_READ_SMOOTHED:
-            dbg("> Read smoothed");
             if(priv->opmode != ADC_OPMODE_IDLE && priv->opmode != ADC_OPMODE_ARMED) {
                 return E_BUSY;
             }
@@ -95,12 +92,11 @@ static error_t UADC_handleRequest(Unit *unit, TF_ID frame_id, uint8_t command, P
                     pb_float(&pb, priv->averaging_bins[i]);
                 }
             }
-            assert_param(pb.ok);
             com_respond_pb(frame_id, MSG_SUCCESS, &pb);
             return E_SUCCESS;
 
         /**
-         * Configure a trigger. This is legal only if the current state is IDLE.
+         * Configure a trigger. This is legal only if the current state is IDLE or ARMED (will re-arm).
          *
          * Payload:
          *   u8 - source channel
@@ -113,7 +109,7 @@ static error_t UADC_handleRequest(Unit *unit, TF_ID frame_id, uint8_t command, P
          */
         case CMD_SETUP_TRIGGER:
             dbg("> Setup trigger");
-            if(priv->opmode != ADC_OPMODE_IDLE) return E_BUSY;
+            if (priv->opmode != ADC_OPMODE_IDLE && priv->opmode != ADC_OPMODE_ARMED) return E_BUSY;
 
             {
                 uint8_t source = pp_u8(pp);
@@ -175,6 +171,9 @@ static error_t UADC_handleRequest(Unit *unit, TF_ID frame_id, uint8_t command, P
                 return E_FAILURE;
             }
 
+            // avoid firing immediately by the value jumping across the scale
+            priv->trig_prev_level = priv->last_samples[priv->trigger_source];
+
             UADC_SwitchMode(unit, ADC_OPMODE_ARMED);
             return E_SUCCESS;