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

small speed up using larger buffer and multipart Tx

Browse Source
This commit is contained in:
MightyPork
2018-03-05 10:21:23 +01:00
parent da330b4b73
commit 5687196bdd
4 changed files with 54 additions and 8 deletions
Download Patch File Download Diff File Expand all files Collapse all files
units/adc/_adc_core.c
+7 -5
View File
@@ -171,7 +171,7 @@ static void handle_httc(Unit *unit, bool tc)
const bool m_fixcpt = priv->opmode == ADC_OPMODE_BLCAP;
if (ht) {
end = (priv->buf_itemcount / 2);
end = (priv->buf_itemcount >> 1); // div2
}
else {
end = priv->buf_itemcount;
@@ -234,7 +234,7 @@ static void handle_httc(Unit *unit, bool tc)
priv->stream_startpos = 0;
}
else {
priv->stream_startpos = priv->buf_itemcount / 2;
priv->stream_startpos = priv->buf_itemcount >> 1; // div2
}
}
@@ -289,7 +289,7 @@ void UADC_DMA_Handler(void *arg)
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) {
const uint32_t half = (uint32_t) (priv->buf_itemcount / 2);
const uint32_t half = (uint32_t) (priv->buf_itemcount >> 1); // div2
if (ht && tc) {
// dual event interrupt - may happen if we missed both and they were pending after
// interrupts became enabled again (this can happen due to the EOS or other higher prio irq's)
@@ -336,8 +336,10 @@ void UADC_ADC_EOS_Handler(void *arg)
if (priv->opmode == ADC_OPMODE_UNINIT) return;
// Wait for the DMA to complete copying the last sample
uint32_t dmapos;
hw_wait_while((dmapos = DMA_POS(priv)) % priv->nb_channels != 0, 100); // XXX this could be changed to reading it from the DR instead
uint32_t dmapos = DMA_POS(priv);
if ((DMA_POS(priv) % priv->nb_channels) != 0) {
hw_wait_while((dmapos = DMA_POS(priv)) % priv->nb_channels != 0, 100); // XXX this could be changed to reading it from the DR instead
}
uint32_t sample_pos;
if (dmapos == 0) {