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usb_serial: Begun refactoring out components of debug_uart_send_aux_serial_data()

This commit is contained in:
dragonmux 2022-08-21 12:13:58 +01:00 committed by Piotr Esden-Tempski
parent 90a0931f78
commit cd67c7de29
3 changed files with 38 additions and 20 deletions
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27
src/platforms/common/aux_serial.c
View File

@ -273,6 +273,33 @@ void aux_serial_send(const size_t len)
}
}
size_t aux_serial_update_receive_buffer_fullness(void)
{
aux_serial_receive_write_index =
AUX_UART_BUFFER_SIZE - dma_get_number_of_data(USBUSART_DMA_BUS, USBUSART_DMA_RX_CHAN);
aux_serial_receive_write_index %= AUX_UART_BUFFER_SIZE;
return aux_serial_receive_write_index;
}
bool aux_serial_receive_has_data(void)
{
return
#ifdef ENABLE_DEBUG
usb_dbg_in != usb_dbg_out ||
#endif
aux_serial_receive_write_index != aux_serial_receive_read_index;
}
void aux_serial_drain_receive_buffer(void)
{
#ifdef ENABLE_DEBUG
usb_dbg_out = usb_dbg_in;
#endif
aux_serial_receive_read_index = aux_serial_receive_write_index;
/* Turn off LED */
usbuart_set_led_state(RX_LED_ACT, false);
}
static void aux_serial_receive_isr(const uint32_t usart, const uint8_t dma_irq)
{
nvic_disable_irq(dma_irq);

4
src/platforms/common/aux_serial.h
View File

@ -38,4 +38,8 @@ size_t aux_serial_transmit_buffer_fullness(void);
/* Send a number of bytes staged into the current transmit bufer */
void aux_serial_send(size_t len);
size_t aux_serial_update_receive_buffer_fullness(void);
bool aux_serial_receive_has_data(void);
void aux_serial_drain_receive_buffer(void);
#endif /*AUX_SERIAL_H*/

27
src/platforms/common/usb_serial.c
View File

@ -236,31 +236,18 @@ static uint32_t copy_from_fifo(char *dst, const char *src, uint32_t start, uint3
* Runs deferred processing for AUX serial RX, draining RX FIFO by sending
* characters to host PC via the debug serial interface. Allowed to write to FIFO OUT pointer.
*/
static void debug_uart_send_rx_packet(void)
static void debug_uart_send_aux_serial_data(void)
{
aux_serial_receive_complete = false;
/* Calculate writing position in the FIFO */
const uint32_t aux_serial_receive_write_index =
(AUX_UART_BUFFER_SIZE - dma_get_number_of_data(USBUSART_DMA_BUS, USBUSART_DMA_RX_CHAN)) % AUX_UART_BUFFER_SIZE;
const size_t aux_serial_receive_write_index = aux_serial_update_receive_buffer_fullness();
/* Forcibly empty fifo if no USB endpoint.
* If fifo empty, nothing further to do. */
if (usb_get_config() != 1 || (aux_serial_receive_write_index == aux_serial_receive_read_index
#ifdef ENABLE_DEBUG
&& usb_dbg_in == usb_dbg_out
#endif
))
{
#ifdef ENABLE_DEBUG
usb_dbg_out = usb_dbg_in;
#endif
aux_serial_receive_read_index = aux_serial_receive_write_index;
/* Turn off LED */
usbuart_set_led_state(RX_LED_ACT, false);
if (usb_get_config() != 1 || !aux_serial_receive_has_data()) {
aux_serial_drain_receive_buffer();
aux_serial_receive_complete = true;
}
else
{
} else {
/* To avoid the need of sending ZLP don't transmit full packet.
* Also reserve space for copy function overrun.
*/
@ -297,7 +284,7 @@ void debug_uart_run(void)
/* Try to send a packet if usb is idle */
if (aux_serial_receive_complete)
debug_uart_send_rx_packet();
debug_uart_send_aux_serial_data();
nvic_enable_irq(USB_IRQ);
}
@ -307,7 +294,7 @@ static void debug_uart_send_callback(usbd_device *dev, uint8_t ep)
(void) ep;
(void) dev;
#if defined(STM32F0) || defined(STM32F1) || defined(STM32F3) || defined(STM32F4)
debug_uart_send_rx_packet();
debug_uart_send_aux_serial_data();
#endif
}