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Start audio DMA only in apps that use audio (#1982)

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* Start audio DMA only in apps that use audio
* Rename main.cpp to main.cpp.unuse
* shrink_tx_buffer fix for transfers_per_buffer==1 scenario
This commit is contained in:
Mark Thompson 2024-03-13 10:07:44 -05:00 • committed by GitHub
parent 3c489e1a81
commit 0b2d5f75cc
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GPG key ID: B5690EEEBB952194
16 changed files with 67 additions and 27 deletions
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42
firmware/baseband/audio_dma.cpp
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@ -162,14 +162,6 @@ static void rx_error() {
disable();
}
void init() {
gpdma_channel_i2s0_tx.set_handlers(tx_transfer_complete, tx_error);
gpdma_channel_i2s0_rx.set_handlers(rx_transfer_complete, rx_error);
// LPC_GPDMA->SYNC |= (1 << gpdma_rx_peripheral);
// LPC_GPDMA->SYNC |= (1 << gpdma_tx_peripheral);
}
static void configure_tx() {
const auto peripheral = reinterpret_cast<uint32_t>(&LPC_I2S0->TXFIFO);
const auto control_value = control_tx(transfer_bytes);
@ -194,22 +186,34 @@ static void configure_rx() {
}
}
void configure() {
configure_tx();
configure_rx();
static void enable_tx() {
const auto gpdma_config_tx = config_tx();
gpdma_channel_i2s0_tx.configure(lli_tx_loop[0], gpdma_config_tx);
gpdma_channel_i2s0_tx.enable();
}
void enable() {
const auto gpdma_config_tx = config_tx();
static void enable_rx() {
const auto gpdma_config_rx = config_rx();
gpdma_channel_i2s0_tx.configure(lli_tx_loop[0], gpdma_config_tx);
gpdma_channel_i2s0_rx.configure(lli_rx_loop[0], gpdma_config_rx);
gpdma_channel_i2s0_tx.enable();
gpdma_channel_i2s0_rx.enable();
}
void init_audio_out() {
gpdma_channel_i2s0_tx.set_handlers(tx_transfer_complete, tx_error);
// LPC_GPDMA->SYNC |= (1 << gpdma_tx_peripheral);
configure_tx();
enable_tx();
nvicEnableVector(DMA_IRQn, CORTEX_PRIORITY_MASK(LPC_DMA_IRQ_PRIORITY));
}
void init_audio_in() {
gpdma_channel_i2s0_rx.set_handlers(rx_transfer_complete, rx_error);
// LPC_GPDMA->SYNC |= (1 << gpdma_rx_peripheral);
configure_rx();
enable_rx();
nvicEnableVector(DMA_IRQn, CORTEX_PRIORITY_MASK(LPC_DMA_IRQ_PRIORITY));
}
void disable() {
gpdma_channel_i2s0_tx.disable();
gpdma_channel_i2s0_rx.disable();
@ -217,6 +221,10 @@ void disable() {
void shrink_tx_buffer(bool shrink) {
single_tx_buffer = shrink;
if (transfers_per_buffer == 1)
return;
if (single_tx_buffer)
lli_tx_loop[0].lli = lli_pointer(&lli_tx_loop[0]);
else