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stm32/uart: Enable UART FIFO for STM32N6.

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Signed-off-by: iabdalkader <i.abdalkader@gmail.com>
This commit is contained in:
iabdalkader
2025-09-14 12:23:24 +02:00
committed by Damien George
parent a6efc67064
commit 7cbe083b2c
2 changed files with 5 additions and 5 deletions
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2
ports/stm32/Makefile
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@@ -445,7 +445,7 @@ HAL_SRC_C += $(addprefix $(STM32LIB_HAL_BASE)/Src/stm32$(MCU_SERIES)xx_,\
)
endif
ifeq ($(MCU_SERIES),$(filter $(MCU_SERIES),h7))
ifeq ($(MCU_SERIES),$(filter $(MCU_SERIES),h7 n6))
HAL_SRC_C += $(addprefix $(STM32LIB_HAL_BASE)/Src/stm32$(MCU_SERIES)xx_,\
hal_uart_ex.c \
)

8
ports/stm32/uart.c
View File

@@ -665,7 +665,7 @@ bool uart_init(machine_uart_obj_t *uart_obj,
huart.Init.HwFlowCtl = flow;
huart.Init.OverSampling = UART_OVERSAMPLING_16;
#if defined(STM32G4) || defined(STM32H7) // WB also has a fifo..
#if defined(STM32G4) || defined(STM32H7) || defined(STM32N6) // WB also has a fifo..
huart.FifoMode = UART_FIFOMODE_ENABLE;
#endif
@@ -717,7 +717,7 @@ bool uart_init(machine_uart_obj_t *uart_obj,
uart_obj->char_width = CHAR_WIDTH_8BIT;
}
#if defined(STM32H7)
#if defined(STM32H7) || defined(STM32N6)
HAL_UARTEx_SetTxFifoThreshold(&huart, UART_TXFIFO_THRESHOLD_1_8);
HAL_UARTEx_SetRxFifoThreshold(&huart, UART_RXFIFO_THRESHOLD_1_8);
HAL_UARTEx_EnableFifoMode(&huart);
@@ -1186,8 +1186,8 @@ size_t uart_tx_data(machine_uart_obj_t *self, const void *src_in, size_t num_cha
// timeout_char by FIFO size + 1.
// STM32G4 has 8 words FIFO.
timeout = (8 + 1) * self->timeout_char;
#elif defined(STM32H7)
// STM32H7 has 16 words FIFO.
#elif defined(STM32H7) || defined(STM32N6)
// STM32H7 and STM32N6 have 16 words FIFO.
timeout = (16 + 1) * self->timeout_char;
#else
// The timeout specified here is for waiting for the TX data register to