mordae/pico-sdr
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Clear DMA chaining before abort

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This commit is contained in:
Jan Hamal Dvořák 2024-07-23 20:30:54 +02:00
parent 63ca3c6439
commit 178ba7bee0
1 changed files with 15 additions and 1 deletions
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16
src/main.c
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@ -82,6 +82,14 @@ static queue_t iq_queue;
static uint8_t iq_queue_buffer[IQ_QUEUE_LEN][IQ_BLOCK_LEN];
static size_t iq_queue_pos = 0;
static void dma_channel_clear_chain_to(int ch)
{
uint32_t ctrl = dma_hw->ch[ch].al1_ctrl;
ctrl &= ~DMA_CH0_CTRL_TRIG_CHAIN_TO_BITS;
ctrl |= ch << DMA_CH0_CTRL_TRIG_CHAIN_TO_LSB;
dma_hw->ch[ch].al1_ctrl = ctrl;
}
static void init_lo()
{
gpio_disable_pulls(LO_PIN);
@ -329,7 +337,6 @@ static void rf_rx_start()
channel_config_set_transfer_data_size(&dma_conf, DMA_SIZE_32);
channel_config_set_read_increment(&dma_conf, false);
channel_config_set_write_increment(&dma_conf, false);
channel_config_set_ring(&dma_conf, false, 4);
channel_config_set_high_priority(&dma_conf, true);
channel_config_set_dreq(&dma_conf, dma_get_timer_dreq(dma_t_samp));
dma_channel_configure(dma_ch_samp_cos, &dma_conf, &PIO->sm[AD_SM].instr, &samp_insn,
@ -353,6 +360,12 @@ static void rf_rx_stop(void)
sleep_us(10);
dma_channel_clear_chain_to(dma_ch_rx1);
dma_channel_clear_chain_to(dma_ch_rx2);
dma_channel_clear_chain_to(dma_ch_mix1);
dma_channel_clear_chain_to(dma_ch_mix2);
dma_channel_clear_chain_to(dma_ch_samp_cos);
dma_channel_abort(dma_ch_rx1);
dma_channel_abort(dma_ch_rx2);
dma_channel_abort(dma_ch_mix1);
@ -592,6 +605,7 @@ done:
rf_rx_stop();
dma_channel_clear_chain_to(dma_ch_in_cos);
dma_channel_abort(dma_ch_in_cos);
dma_channel_cleanup(dma_ch_in_cos);
dma_channel_unclaim(dma_ch_in_cos);