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usbuart: Moved the aux UART DMA TX interrupt handling into aux_serial.c

This commit is contained in:
dragonmux 2022-08-20 16:23:10 +01:00 committed by Piotr Esden-Tempski
parent 5d94ea3017
commit d25a093d7f
3 changed files with 45 additions and 48 deletions
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45
src/platforms/common/aux_serial.c
View File

@ -40,6 +40,7 @@
static char aux_serial_transmit_buffer[2U][TX_BUF_SIZE];
static uint8_t aux_serial_transmit_buffer_index;
static uint8_t aux_serial_transmit_buffer_consumed;
static bool aux_serial_transmit_complete = true;
#ifdef DMA_STREAM0
#define dma_channel_reset(dma, channel) dma_stream_reset(dma, channel)
@ -285,6 +286,29 @@ static void aux_serial_receive_isr(const uint32_t usart, const uint8_t dma_irq)
nvic_enable_irq(dma_irq);
}
static void aux_serial_dma_transmit_isr(const uint8_t dma_tx_channel)
{
nvic_disable_irq(USB_IRQ);
/* Stop DMA */
dma_disable_channel(USBUSART_DMA_BUS, dma_tx_channel);
dma_clear_interrupt_flags(USBUSART_DMA_BUS, dma_tx_channel, DMA_CGIF);
/*
* If a new buffer is ready, continue transmission.
* Otherwise we report the transfer has completed.
*/
if (aux_serial_transmit_buffer_fullness()) {
aux_serial_switch_transmit_buffers();
usbd_ep_nak_set(usbdev, CDCACM_UART_ENDPOINT, 0);
} else {
usbuart_set_led_state(TX_LED_ACT, false);
aux_serial_transmit_complete = true;
}
nvic_enable_irq(USB_IRQ);
}
#if defined(USBUSART_ISR)
void USBUSART_ISR(void)
{
@ -318,6 +342,27 @@ void USBUSART2_ISR(void)
}
#endif
#if defined(USBUSART_DMA_TX_ISR)
void USBUSART_DMA_TX_ISR(void)
{
aux_serial_dma_transmit_isr(USBUSART_DMA_TX_CHAN);
}
#endif
#if defined(USBUSART1_DMA_TX_ISR)
void USBUSART1_DMA_TX_ISR(void)
{
aux_serial_dma_transmit_isr(USBUSART1_DMA_TX_CHAN);
}
#endif
#if defined(USBUSART2_DMA_TX_ISR)
void USBUSART2_DMA_TX_ISR(void)
{
aux_serial_dma_transmit_isr(USBUSART2_DMA_TX_CHAN);
}
#endif
#elif defined(LM4F)
char *aux_serial_current_transmit_buffer(void)
{

1
src/platforms/common/usbuart.h
View File

@ -41,7 +41,6 @@ void debug_uart_run(void);
#define RX_FIFO_SIZE (USART_DMA_BUF_SIZE)
#define TX_BUF_SIZE (USART_DMA_BUF_SIZE)
extern bool aux_serial_transmit_complete;
/* RX Fifo buffer with space for copy fn overrun */
extern char buf_rx[RX_FIFO_SIZE + sizeof(uint64_t)];
/* RX Fifo out pointer, writes assumed to be atomic */

47
src/platforms/stm32/usbuart.c
View File

@ -38,8 +38,6 @@
#define DMA_CGIF DMA_IFCR_CGIF_BIT
#endif
/* TX transfer complete */
bool aux_serial_transmit_complete = true;
/* RX Fifo buffer with space for copy fn overrun */
char buf_rx[RX_FIFO_SIZE + sizeof(uint64_t)];
/* RX Fifo out pointer, writes assumed to be atomic */
@ -78,51 +76,6 @@ void usbuart_set_led_state(uint8_t ledn, bool state)
}
}
#define USBUSART_DMA_TX_ISR_TEMPLATE(DMA_TX_CHAN) do { \
nvic_disable_irq(USB_IRQ); \
\
/* Stop DMA */ \
dma_disable_channel(USBUSART_DMA_BUS, DMA_TX_CHAN); \
dma_clear_interrupt_flags(USBUSART_DMA_BUS, DMA_TX_CHAN, DMA_CGIF); \
\
/* If new buffer is ready, continue transmission. \
* Otherwise report transfer completion. \
*/ \
if (aux_serial_transmit_buffer_fullness()) \
{ \
aux_serial_switch_transmit_buffers(); \
usbd_ep_nak_set(usbdev, CDCACM_UART_ENDPOINT, 0); \
} \
else \
{ \
usbuart_set_led_state(TX_LED_ACT, false); \
aux_serial_transmit_complete = true; \
} \
\
nvic_enable_irq(USB_IRQ); \
} while(0)
#if defined(USBUSART_DMA_TX_ISR)
void USBUSART_DMA_TX_ISR(void)
{
USBUSART_DMA_TX_ISR_TEMPLATE(USBUSART_DMA_TX_CHAN);
}
#endif
#if defined(USBUSART1_DMA_TX_ISR)
void USBUSART1_DMA_TX_ISR(void)
{
USBUSART_DMA_TX_ISR_TEMPLATE(USBUSART1_DMA_TX_CHAN);
}
#endif
#if defined(USBUSART2_DMA_TX_ISR)
void USBUSART2_DMA_TX_ISR(void)
{
USBUSART_DMA_TX_ISR_TEMPLATE(USBUSART2_DMA_TX_CHAN);
}
#endif
#define USBUSART_DMA_RX_ISR_TEMPLATE(USART_IRQ, DMA_RX_CHAN) do { \
nvic_disable_irq(USART_IRQ); \
\