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stm32/uart: Add support for UART4/5 on L0 MCUs.

This commit is contained in:
Chris Mason 2019-12-05 00:46:24 +11:00 committed by Damien George
parent 9ca8a503ed
commit d61e7a6d8a
3 changed files with 18 additions and 1 deletions
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2
ports/stm32/mpconfigboard_common.h
View File

@ -196,7 +196,7 @@
#define PYB_EXTI_NUM_VECTORS (30) // TODO (22 configurable, 7 direct)
#define MICROPY_HW_MAX_I2C (3)
#define MICROPY_HW_MAX_TIMER (22)
#define MICROPY_HW_MAX_UART (4)
#define MICROPY_HW_MAX_UART (5)
// Configuration for STM32L4 series
#elif defined(STM32L4)

9
ports/stm32/stm32_it.c
View File

@ -731,6 +731,15 @@ void USART3_8_IRQHandler(void) {
IRQ_EXIT(USART3_8_IRQn);
}
#elif defined(STM32L0)
void USART4_5_IRQHandler(void) {
IRQ_ENTER(USART4_5_IRQn);
uart_irq_handler(4);
uart_irq_handler(5);
IRQ_EXIT(USART4_5_IRQn);
}
#else
void USART3_IRQHandler(void) {

8
ports/stm32/uart.c
View File

@ -247,6 +247,10 @@ bool uart_init(pyb_uart_obj_t *uart_obj,
UARTx = USART4;
irqn = USART3_8_IRQn;
__HAL_RCC_USART4_CLK_ENABLE();
#elif defined(STM32L0)
UARTx = USART4;
irqn = USART4_5_IRQn;
__HAL_RCC_USART4_CLK_ENABLE();
#else
UARTx = UART4;
irqn = UART4_IRQn;
@ -274,6 +278,10 @@ bool uart_init(pyb_uart_obj_t *uart_obj,
UARTx = USART5;
irqn = USART3_8_IRQn;
__HAL_RCC_USART5_CLK_ENABLE();
#elif defined(STM32L0)
UARTx = USART5;
irqn = USART4_5_IRQn;
__HAL_RCC_USART5_CLK_ENABLE();
#else
UARTx = UART5;
irqn = UART5_IRQn;