diff options
| -rw-r--r-- | ports/stm32/uart.c | 15 | ||||
| -rw-r--r-- | ports/stm32/uart.h | 4 |
2 files changed, 19 insertions, 0 deletions
diff --git a/ports/stm32/uart.c b/ports/stm32/uart.c index 55fa62214..e3f8dc1f9 100644 --- a/ports/stm32/uart.c +++ b/ports/stm32/uart.c @@ -689,6 +689,10 @@ bool uart_init(machine_uart_obj_t *uart_obj, uart_obj->is_enabled = true; uart_obj->attached_to_repl = false; + #if defined(STM32F4) || defined(STM32L1) + uart_obj->suppress_idle_irq = true; + #endif + if (bits == UART_WORDLENGTH_9B && parity == UART_PARITY_NONE) { uart_obj->char_mask = 0x1ff; uart_obj->char_width = CHAR_WIDTH_9BIT; @@ -1274,6 +1278,9 @@ void uart_irq_handler(mp_uint_t uart_id) { self->uartx->CR1 &= ~USART_CR1_RXNEIE; } } + if (self->suppress_idle_irq) { + self->mp_irq_flags &= ~USART_SR_IDLE; + } #else self->uartx->ICR = self->mp_irq_flags & (USART_ICR_IDLECF | USART_ICR_ORECF); #endif @@ -1282,6 +1289,14 @@ void uart_irq_handler(mp_uint_t uart_id) { if (self->mp_irq_trigger & self->mp_irq_flags) { mp_irq_handler(self->mp_irq_obj); } + + #if defined(STM32F4) || defined(STM32L1) + if (did_clear_sr) { + self->suppress_idle_irq = false; + } else { + self->suppress_idle_irq = true; + } + #endif } static mp_uint_t uart_irq_trigger(mp_obj_t self_in, mp_uint_t new_trigger) { diff --git a/ports/stm32/uart.h b/ports/stm32/uart.h index de4b70cde..d92434c64 100644 --- a/ports/stm32/uart.h +++ b/ports/stm32/uart.h @@ -26,6 +26,7 @@ #ifndef MICROPY_INCLUDED_STM32_UART_H #define MICROPY_INCLUDED_STM32_UART_H +#include "py/mphal.h" #include "shared/runtime/mpirq.h" typedef enum { @@ -63,6 +64,9 @@ typedef struct _machine_uart_obj_t { pyb_uart_t uart_id : 8; bool is_static : 1; bool is_enabled : 1; + #if defined(STM32F4) || defined(STM32L1) + bool suppress_idle_irq : 1; // whether the RX idle IRQ is suppressed (F4/L1 only) + #endif bool attached_to_repl; // whether the UART is attached to REPL byte char_width; // 0 for 7,8 bit chars, 1 for 9 bit chars uint16_t char_mask; // 0x7f for 7 bit, 0xff for 8 bit, 0x1ff for 9 bit |