gex
/
gex-core
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

Fixzed triggers and also missed TC/TH

Browse Source
adc^2
Ondřej Hruška 6 years ago
parent d6e73a5641
commit 85453afa44
Signed by: MightyPork
GPG Key ID: 2C5FD5035250423D
2 changed files with 103 additions and 82 deletions
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
Show Stats Download Patch File Download Diff File
  1. 103
      units/adc/_adc_core.c
  2. 2
      units/adc/_adc_init.c

103
units/adc/_adc_core.c
Unescape View File

@ -140,38 +140,17 @@ void UADC_ReportEndOfStream(Unit *unit)
scheduleJob(&j);
}
void UADC_DMA_Handler(void *arg)
static void handle_httc(Unit *unit, bool tc)
{
Unit *unit = arg;
assert_param(unit);
struct priv *priv = unit->data;
assert_param(priv);
if (priv->opmode == ADC_OPMODE_UNINIT) {
LL_DMA_ClearFlag_HT(priv->DMAx, priv->dma_chnum);
LL_DMA_ClearFlag_TC(priv->DMAx, priv->dma_chnum);
LL_DMA_ClearFlag_TE(priv->DMAx, priv->dma_chnum);
return;
}
const uint32_t isrsnapshot = priv->DMAx->ISR;
if (LL_DMA_IsActiveFlag_G(isrsnapshot, priv->dma_chnum)) {
const bool tc = LL_DMA_IsActiveFlag_TC(isrsnapshot, priv->dma_chnum);
const bool ht = LL_DMA_IsActiveFlag_HT(isrsnapshot, priv->dma_chnum);
const bool te = LL_DMA_IsActiveFlag_TE(isrsnapshot, priv->dma_chnum);
uint16_t start = priv->stream_startpos;
uint16_t end;
const bool ht = !tc;
// check what mode we're in
const bool m_trigd = priv->opmode == ADC_OPMODE_TRIGD;
const bool m_stream = priv->opmode == ADC_OPMODE_STREAM;
const bool m_fixcpt = priv->opmode == ADC_OPMODE_BLCAP;
if (m_trigd || m_stream || m_fixcpt) {
if (ht || tc) {
const uint16_t start = priv->stream_startpos;
uint16_t end;
if (ht) {
// dbg("HT");
end = (uint16_t) (priv->dma_buffer_itemcount / 2);
@ -183,10 +162,12 @@ void UADC_DMA_Handler(void *arg)
LL_DMA_ClearFlag_TC(priv->DMAx, priv->dma_chnum);
}
if (start > end) {
dbg("start %d, end %d", (int) start, (int) end);
if (ht == tc) {
// This shouldn't happen - looks like we missed the TC flag
dbg("!! %d -> %d", (int) start, (int) end);
// TODO we could try to catch up. for now, just take what is easy to grab and hope it doesnt matter
if (end == 64) start = 0;
}
assert_param(start <= end);
if (start != end) {
uint32_t sgcount = (end - start) / priv->nb_channels;
@ -231,6 +212,49 @@ void UADC_DMA_Handler(void *arg)
else {
priv->stream_startpos = end;
}
}
void UADC_DMA_Handler(void *arg)
{
Unit *unit = arg;
assert_param(unit);
struct priv *priv = unit->data;
assert_param(priv);
if (priv->opmode == ADC_OPMODE_UNINIT) {
LL_DMA_ClearFlag_HT(priv->DMAx, priv->dma_chnum);
LL_DMA_ClearFlag_TC(priv->DMAx, priv->dma_chnum);
LL_DMA_ClearFlag_TE(priv->DMAx, priv->dma_chnum);
return;
}
const uint32_t isrsnapshot = priv->DMAx->ISR;
if (LL_DMA_IsActiveFlag_G(isrsnapshot, priv->dma_chnum)) {
const bool tc = LL_DMA_IsActiveFlag_TC(isrsnapshot, priv->dma_chnum);
const bool ht = LL_DMA_IsActiveFlag_HT(isrsnapshot, priv->dma_chnum);
const bool te = LL_DMA_IsActiveFlag_TE(isrsnapshot, priv->dma_chnum);
// check what mode we're in
const bool m_trigd = priv->opmode == ADC_OPMODE_TRIGD;
const bool m_stream = priv->opmode == ADC_OPMODE_STREAM;
const bool m_fixcpt = priv->opmode == ADC_OPMODE_BLCAP;
if (m_trigd || m_stream || m_fixcpt) {
if (ht || tc) {
if (ht && tc) {
uint16_t half = (uint16_t) (priv->dma_buffer_itemcount / 2);
if (priv->stream_startpos > half) {
handle_httc(unit, true);
handle_httc(unit, false);
} else {
handle_httc(unit, false);
handle_httc(unit, true);
}
} else {
handle_httc(unit, tc);
}
}
} else {
// This shouldn't happen, the interrupt should be disabled in this opmode
@ -259,13 +283,9 @@ void UADC_ADC_EOS_Handler(void *arg)
struct priv *priv = unit->data;
assert_param(priv);
const bool trig_ready4_rising = (priv->trig_prev_level < priv->trig_level) && (bool) (priv->trig_edge & 0b01);
const bool trig_ready4_falling = (priv->trig_prev_level > priv->trig_level) && (bool) (priv->trig_edge & 0b10);
const bool armed = (trig_ready4_rising && trig_ready4_falling) && priv->opmode == ADC_OPMODE_ARMED;
// Normally
uint64_t timestamp = 0;
if (armed) timestamp = PTIM_GetMicrotime();
if (priv->opmode == ADC_OPMODE_ARMED) timestamp = PTIM_GetMicrotime();
LL_ADC_ClearFlag_EOS(priv->ADCx);
if (priv->opmode == ADC_OPMODE_UNINIT) return;
@ -284,14 +304,12 @@ void UADC_ADC_EOS_Handler(void *arg)
int cnt = 0; // index of the sample within the group
const uint8_t trig_source = priv->trigger_source;
const bool can_average = priv->real_frequency_int < UADC_MAX_FREQ_FOR_AVERAGING;
const uint16_t *dma_buffer = priv->dma_buffer;
const uint32_t channels_mask = priv->extended_channels_mask;
for (uint8_t i = 0; i < 18; i++) {
if (channels_mask & (1 << i)) {
uint16_t val = dma_buffer[sample_pos+cnt];
uint16_t val = priv->dma_buffer[sample_pos+cnt];
cnt++;
if (can_average) {
@ -301,24 +319,27 @@ void UADC_ADC_EOS_Handler(void *arg)
}
priv->last_samples[i] = val;
}
}
if (priv->opmode == ADC_OPMODE_ARMED) {
uint16_t val = priv->last_samples[priv->trigger_source];
if (armed && i == trig_source) {
// dbg("Trig line level %d", (int)val);
if (trig_ready4_rising && val >= priv->trig_level) {
if ((priv->trig_prev_level < priv->trig_level) && val >= priv->trig_level && (bool) (priv->trig_edge & 0b01)) {
// dbg("******** Rising edge");
// Rising edge
UADC_HandleTrigger(unit, 1, timestamp);
}
else if (trig_ready4_falling && val <= priv->trig_level) {
else if ((priv->trig_prev_level > priv->trig_level) && val <= priv->trig_level && (bool) (priv->trig_edge & 0b10)) {
// dbg("******** Falling edge");
// Falling edge
UADC_HandleTrigger(unit, 2, timestamp);
}
priv->trig_prev_level = val;
}
}
}
// auto-rearm was waiting for the next sample
if (priv->opmode == ADC_OPMODE_REARM_PENDING) {
if (!priv->auto_rearm) {
// It looks like the flag was cleared by DISARM before we got a new sample.

2
units/adc/_adc_init.c
Unescape View File

@ -196,7 +196,7 @@ error_t UADC_init(Unit *unit)
priv->dma_buffer_itemcount*sizeof(uint16_t),
priv->nb_channels);
priv->dma_buffer = malloc_ck(priv->dma_buffer_itemcount * sizeof(uint16_t));
priv->dma_buffer = calloc_ck(priv->dma_buffer_itemcount, sizeof(uint16_t));
if (NULL == priv->dma_buffer) return E_OUT_OF_MEM;
assert_param(((uint32_t) priv->dma_buffer & 3) == 0); // must be aligned

Write Preview
Loading…
Cancel
Save