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@ -4,12 +4,16 @@ |
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#include "platform.h" |
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#include "platform.h" |
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#include "unit_base.h" |
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#include "unit_base.h" |
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#include "unit_adc.h" |
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#define ADC_INTERNAL |
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#define ADC_INTERNAL |
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#include "_adc_internal.h" |
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#include "_adc_internal.h" |
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#define DMA_POS(priv) ((priv)->dma_buffer_itemcount - (priv)->DMA_CHx->CNDTR) |
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#define DMA_POS(priv) ((priv)->dma_buffer_itemcount - (priv)->DMA_CHx->CNDTR) |
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volatile bool emergency = false; |
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//#define CRUMB() if(emergency) trap("crumb")
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static void UADC_JobSendBlockChunk(Job *job) |
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static void UADC_JobSendBlockChunk(Job *job) |
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{ |
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{ |
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Unit *unit = job->unit; |
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Unit *unit = job->unit; |
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@ -21,7 +25,7 @@ static void UADC_JobSendBlockChunk(Job *job) |
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uint32_t count = job->data2; |
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uint32_t count = job->data2; |
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bool close = (bool) job->data3; |
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bool close = (bool) job->data3; |
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dbg("Send indices [%d -> %d)", (int)start, (int)(start+count)); |
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// dbg("Send indices [%d -> %d)", (int)start, (int)(start+count));
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TF_TYPE type = close ? EVT_CAPT_DONE : EVT_CAPT_MORE; |
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TF_TYPE type = close ? EVT_CAPT_DONE : EVT_CAPT_MORE; |
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@ -58,7 +62,7 @@ static void UADC_JobSendTriggerCaptureHeader(Job *job) |
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EventReport_Start(&er); |
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EventReport_Start(&er); |
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priv->stream_frame_id = er.sent_msg_id; |
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priv->stream_frame_id = er.sent_msg_id; |
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dbg("Sending TRIG HEADER with id %d (idx %d)", (int)er.sent_msg_id, (int)index_trigd); |
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// dbg("Sending TRIG HEADER with id %d (idx %d)", (int)er.sent_msg_id, (int)index_trigd);
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{ |
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{ |
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// preamble
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// preamble
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uint8_t buf[4]; |
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uint8_t buf[4]; |
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@ -81,10 +85,10 @@ static void UADC_JobSendTriggerCaptureHeader(Job *job) |
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uint16_t items_from_end = pretrig_remain - index_trigd; |
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uint16_t items_from_end = pretrig_remain - index_trigd; |
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assert_param(priv->dma_buffer_itemcount - items_from_end >= index_trigd); |
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assert_param(priv->dma_buffer_itemcount - items_from_end >= index_trigd); |
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dbg("Pretrig wraparound part: start %d, len %d", |
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// dbg("Pretrig wraparound part: start %d, len %d",
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(int) (priv->dma_buffer_itemcount - items_from_end), |
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// (int) (priv->dma_buffer_itemcount - items_from_end),
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(int) items_from_end |
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// (int) items_from_end
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); |
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// );
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EventReport_Data( |
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EventReport_Data( |
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(uint8_t *) &priv->dma_buffer[priv->dma_buffer_itemcount - |
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(uint8_t *) &priv->dma_buffer[priv->dma_buffer_itemcount - |
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@ -95,10 +99,10 @@ static void UADC_JobSendTriggerCaptureHeader(Job *job) |
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pretrig_remain -= items_from_end; |
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pretrig_remain -= items_from_end; |
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} |
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} |
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dbg("Pretrig front part: start %d, len %d", |
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// dbg("Pretrig front part: start %d, len %d",
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(int) (index_trigd - pretrig_remain), |
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// (int) (index_trigd - pretrig_remain),
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(int) pretrig_remain |
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// (int) pretrig_remain
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); |
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// );
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assert_param(pretrig_remain <= index_trigd); |
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assert_param(pretrig_remain <= index_trigd); |
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EventReport_Data((uint8_t *) &priv->dma_buffer[index_trigd - pretrig_remain], |
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EventReport_Data((uint8_t *) &priv->dma_buffer[index_trigd - pretrig_remain], |
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@ -144,6 +148,13 @@ void UADC_DMA_Handler(void *arg) |
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struct priv *priv = unit->data; |
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struct priv *priv = unit->data; |
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assert_param(priv); |
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assert_param(priv); |
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if (priv->opmode == ADC_OPMODE_UNINIT) { |
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LL_DMA_ClearFlag_HT(priv->DMAx, priv->dma_chnum); |
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LL_DMA_ClearFlag_TC(priv->DMAx, priv->dma_chnum); |
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LL_DMA_ClearFlag_TE(priv->DMAx, priv->dma_chnum); |
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return; |
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} |
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const uint32_t isrsnapshot = priv->DMAx->ISR; |
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const uint32_t isrsnapshot = priv->DMAx->ISR; |
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if (LL_DMA_IsActiveFlag_G(isrsnapshot, priv->dma_chnum)) { |
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if (LL_DMA_IsActiveFlag_G(isrsnapshot, priv->dma_chnum)) { |
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@ -192,7 +203,13 @@ void UADC_DMA_Handler(void *arg) |
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.data3 = (uint32_t) close, |
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.data3 = (uint32_t) close, |
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.cb = UADC_JobSendBlockChunk |
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.cb = UADC_JobSendBlockChunk |
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}; |
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}; |
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scheduleJob(&j); |
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if (!scheduleJob(&j)) { |
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// Abort if we can't queue - the stream would tear and we'd hog the system with error messages
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dbg("(!) Buffers overflow, abort capture"); |
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emergency = true; |
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UADC_SwitchMode(unit, ADC_OPMODE_EMERGENCY_SHUTDOWN); |
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return; |
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} |
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if (close) { |
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if (close) { |
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// dbg("End of capture");
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// dbg("End of capture");
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@ -243,10 +260,11 @@ void UADC_ADC_EOS_Handler(void *arg) |
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assert_param(priv); |
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assert_param(priv); |
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LL_ADC_ClearFlag_EOS(priv->ADCx); |
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LL_ADC_ClearFlag_EOS(priv->ADCx); |
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if (priv->opmode == ADC_OPMODE_UNINIT) return; |
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// Wait for the DMA to complete copying the last sample
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// Wait for the DMA to complete copying the last sample
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uint16_t dmapos; |
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uint16_t dmapos; |
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while ((dmapos = (uint16_t) DMA_POS(priv)) % priv->nb_channels != 0); |
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hw_wait_while((dmapos = (uint16_t) DMA_POS(priv)) % priv->nb_channels != 0, 100); |
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uint32_t sample_pos; |
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uint32_t sample_pos; |
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if (dmapos == 0) { |
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if (dmapos == 0) { |
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@ -313,6 +331,7 @@ void UADC_HandleTrigger(Unit *unit, uint8_t edge_type, uint64_t timestamp) |
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assert_param(unit); |
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assert_param(unit); |
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struct priv *priv = unit->data; |
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struct priv *priv = unit->data; |
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assert_param(priv); |
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assert_param(priv); |
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if (priv->opmode == ADC_OPMODE_UNINIT) return; |
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if (priv->trig_holdoff != 0 && priv->trig_holdoff_remain > 0) { |
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if (priv->trig_holdoff != 0 && priv->trig_holdoff_remain > 0) { |
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// dbg("Trig discarded due to holdoff.");
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// dbg("Trig discarded due to holdoff.");
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@ -323,7 +342,7 @@ void UADC_HandleTrigger(Unit *unit, uint8_t edge_type, uint64_t timestamp) |
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priv->trig_holdoff_remain = priv->trig_holdoff; |
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priv->trig_holdoff_remain = priv->trig_holdoff; |
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// Start the tick
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// Start the tick
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unit->tick_interval = 1; |
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unit->tick_interval = 1; |
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unit->_tick_cnt = 0; |
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unit->_tick_cnt = 1; |
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} |
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} |
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priv->stream_startpos = (uint16_t) DMA_POS(priv); |
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priv->stream_startpos = (uint16_t) DMA_POS(priv); |
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@ -349,6 +368,7 @@ void UADC_StartBlockCapture(Unit *unit, uint32_t len, TF_ID frame_id) |
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assert_param(unit); |
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assert_param(unit); |
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struct priv *priv = unit->data; |
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struct priv *priv = unit->data; |
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assert_param(priv); |
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assert_param(priv); |
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if (priv->opmode == ADC_OPMODE_UNINIT) return; |
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priv->stream_frame_id = frame_id; |
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priv->stream_frame_id = frame_id; |
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priv->stream_startpos = (uint16_t) DMA_POS(priv); |
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priv->stream_startpos = (uint16_t) DMA_POS(priv); |
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@ -363,11 +383,11 @@ void UADC_StartStream(Unit *unit, TF_ID frame_id) |
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assert_param(unit); |
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assert_param(unit); |
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struct priv *priv = unit->data; |
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struct priv *priv = unit->data; |
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assert_param(priv); |
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assert_param(priv); |
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if (priv->opmode == ADC_OPMODE_UNINIT) return; |
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priv->stream_frame_id = frame_id; |
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priv->stream_frame_id = frame_id; |
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priv->stream_startpos = (uint16_t) DMA_POS(priv); |
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priv->stream_startpos = (uint16_t) DMA_POS(priv); |
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priv->stream_serial = 0; |
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priv->stream_serial = 0; |
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// dbg("Start streaming.");
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UADC_SwitchMode(unit, ADC_OPMODE_STREAM); |
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UADC_SwitchMode(unit, ADC_OPMODE_STREAM); |
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} |
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} |
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@ -377,8 +397,8 @@ void UADC_StopStream(Unit *unit) |
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assert_param(unit); |
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assert_param(unit); |
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struct priv *priv = unit->data; |
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struct priv *priv = unit->data; |
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assert_param(priv); |
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assert_param(priv); |
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if (priv->opmode == ADC_OPMODE_UNINIT) return; |
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// dbg("Stop stream.");
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UADC_ReportEndOfStream(unit); |
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UADC_ReportEndOfStream(unit); |
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UADC_SwitchMode(unit, ADC_OPMODE_IDLE); |
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UADC_SwitchMode(unit, ADC_OPMODE_IDLE); |
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} |
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} |
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@ -390,6 +410,16 @@ void UADC_updateTick(Unit *unit) |
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struct priv *priv = unit->data; |
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struct priv *priv = unit->data; |
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assert_param(priv); |
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assert_param(priv); |
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// Recover from shutdown after a delay
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if (priv->opmode == ADC_OPMODE_EMERGENCY_SHUTDOWN) { |
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dbg("Recovering from emergency shutdown"); |
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UADC_SwitchMode(unit, ADC_OPMODE_IDLE); |
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LL_TIM_EnableCounter(priv->TIMx); |
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UADC_ReportEndOfStream(unit); |
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unit->tick_interval = 0; |
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return; |
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} |
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if (priv->trig_holdoff_remain > 0) { |
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if (priv->trig_holdoff_remain > 0) { |
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priv->trig_holdoff_remain--; |
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priv->trig_holdoff_remain--; |
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@ -406,10 +436,14 @@ void UADC_SwitchMode(Unit *unit, enum uadc_opmode new_mode) |
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struct priv *priv = unit->data; |
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struct priv *priv = unit->data; |
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assert_param(priv); |
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assert_param(priv); |
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if (new_mode == priv->opmode) return; // nothing to do
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const enum uadc_opmode old_mode = priv->opmode; |
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if (new_mode == old_mode) return; // nothing to do
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// if un-itied, can go only to IDLE
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// if un-itied, can go only to IDLE
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assert_param((priv->opmode != ADC_OPMODE_UNINIT) || (new_mode == ADC_OPMODE_IDLE)); |
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assert_param((old_mode != ADC_OPMODE_UNINIT) || (new_mode == ADC_OPMODE_IDLE)); |
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priv->opmode = ADC_OPMODE_UNINIT; |
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if (new_mode == ADC_OPMODE_UNINIT) { |
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if (new_mode == ADC_OPMODE_UNINIT) { |
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// dbg("ADC switch -> UNINIT");
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// dbg("ADC switch -> UNINIT");
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@ -436,11 +470,12 @@ void UADC_SwitchMode(Unit *unit, enum uadc_opmode new_mode) |
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LL_DMA_DisableIT_TC(priv->DMAx, priv->dma_chnum); |
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LL_DMA_DisableIT_TC(priv->DMAx, priv->dma_chnum); |
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} |
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} |
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else if (new_mode == ADC_OPMODE_IDLE || new_mode == ADC_OPMODE_REARM_PENDING) { |
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else if (new_mode == ADC_OPMODE_IDLE || new_mode == ADC_OPMODE_REARM_PENDING) { |
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// dbg("ADC switch -> IDLE or IDLE/REARM_PENDING");
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// IDLE and ARMED are identical with the exception that the trigger condition is not checked
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// IDLE and ARMED are identical with the exception that the trigger condition is not checked
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// ARMED can be only entered from IDLE, thus we do the init only here.
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// ARMED can be only entered from IDLE, thus we do the init only here.
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// In IDLE, we don't need the DMA interrupts
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// In IDLE, we don't need the DMA interrupts
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LL_DMA_ClearFlag_HT(priv->DMAx, priv->dma_chnum); |
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LL_DMA_ClearFlag_TC(priv->DMAx, priv->dma_chnum); |
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LL_DMA_DisableIT_HT(priv->DMAx, priv->dma_chnum); |
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LL_DMA_DisableIT_HT(priv->DMAx, priv->dma_chnum); |
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LL_DMA_DisableIT_TC(priv->DMAx, priv->dma_chnum); |
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LL_DMA_DisableIT_TC(priv->DMAx, priv->dma_chnum); |
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@ -448,7 +483,7 @@ void UADC_SwitchMode(Unit *unit, enum uadc_opmode new_mode) |
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LL_ADC_ClearFlag_EOS(priv->ADCx); |
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LL_ADC_ClearFlag_EOS(priv->ADCx); |
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LL_ADC_EnableIT_EOS(priv->ADCx); |
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LL_ADC_EnableIT_EOS(priv->ADCx); |
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if (priv->opmode == ADC_OPMODE_UNINIT) { |
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if (old_mode == ADC_OPMODE_UNINIT) { |
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// Nothing is started yet - this is the only way to leave UNINIT
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// Nothing is started yet - this is the only way to leave UNINIT
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LL_ADC_Enable(priv->ADCx); |
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LL_ADC_Enable(priv->ADCx); |
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LL_DMA_EnableChannel(priv->DMAx, priv->dma_chnum); |
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LL_DMA_EnableChannel(priv->DMAx, priv->dma_chnum); |
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@ -457,9 +492,28 @@ void UADC_SwitchMode(Unit *unit, enum uadc_opmode new_mode) |
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LL_ADC_REG_StartConversion(priv->ADCx); |
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LL_ADC_REG_StartConversion(priv->ADCx); |
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} |
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} |
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} |
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} |
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else if (new_mode == ADC_OPMODE_EMERGENCY_SHUTDOWN) { |
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// Emergency shutdown is used when the job queue overflows and the stream is torn
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// This however doesn't help in the case when user sets such a high frequency
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// that the whole app becomes unresponsive due to the completion ISR, need to verify the value manually.
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LL_DMA_ClearFlag_HT(priv->DMAx, priv->dma_chnum); |
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LL_DMA_ClearFlag_TC(priv->DMAx, priv->dma_chnum); |
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LL_DMA_DisableIT_HT(priv->DMAx, priv->dma_chnum); |
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LL_DMA_DisableIT_TC(priv->DMAx, priv->dma_chnum); |
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LL_TIM_DisableCounter(priv->TIMx); |
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UADC_SetSampleRate(unit, 10000); // fallback to a known safe value
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LL_ADC_ClearFlag_EOS(priv->ADCx); |
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LL_ADC_DisableIT_EOS(priv->ADCx); |
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unit->tick_interval = 0; |
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unit->_tick_cnt = 250; // 1-off
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} |
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else if (new_mode == ADC_OPMODE_ARMED) { |
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else if (new_mode == ADC_OPMODE_ARMED) { |
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// dbg("ADC switch -> ARMED");
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// dbg("ADC switch -> ARMED");
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assert_param(priv->opmode == ADC_OPMODE_IDLE || priv->opmode == ADC_OPMODE_REARM_PENDING); |
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assert_param(old_mode == ADC_OPMODE_IDLE || old_mode == ADC_OPMODE_REARM_PENDING); |
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// avoid firing immediately by the value jumping across the scale
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// avoid firing immediately by the value jumping across the scale
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priv->trig_prev_level = priv->last_samples[priv->trigger_source]; |
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priv->trig_prev_level = priv->last_samples[priv->trigger_source]; |
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@ -469,7 +523,7 @@ void UADC_SwitchMode(Unit *unit, enum uadc_opmode new_mode) |
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new_mode == ADC_OPMODE_BLCAP) { |
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new_mode == ADC_OPMODE_BLCAP) { |
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// dbg("ADC switch -> TRIG'D / STREAM / BLOCK");
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// dbg("ADC switch -> TRIG'D / STREAM / BLOCK");
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assert_param(priv->opmode == ADC_OPMODE_ARMED || priv->opmode == ADC_OPMODE_IDLE); |
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assert_param(old_mode == ADC_OPMODE_ARMED || old_mode == ADC_OPMODE_IDLE); |
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// during the capture, we disallow direct readout and averaging to reduce overhead
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// during the capture, we disallow direct readout and averaging to reduce overhead
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LL_ADC_DisableIT_EOS(priv->ADCx); |
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LL_ADC_DisableIT_EOS(priv->ADCx); |
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@ -484,6 +538,6 @@ void UADC_SwitchMode(Unit *unit, enum uadc_opmode new_mode) |
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LL_DMA_EnableIT_TC(priv->DMAx, priv->dma_chnum); |
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LL_DMA_EnableIT_TC(priv->DMAx, priv->dma_chnum); |
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} |
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} |
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// the actual switch
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dbg("Now setting the new opmode"); |
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priv->opmode = new_mode; |
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priv->opmode = new_mode; |
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} |
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} |
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