diff options
Diffstat (limited to 'ports/stm32/uart.c')
| -rw-r--r-- | ports/stm32/uart.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/ports/stm32/uart.c b/ports/stm32/uart.c index 91db91395e..55fa622142 100644 --- a/ports/stm32/uart.c +++ b/ports/stm32/uart.c @@ -653,7 +653,7 @@ bool uart_init(machine_uart_obj_t *uart_obj, huart.Init.HwFlowCtl = flow; huart.Init.OverSampling = UART_OVERSAMPLING_16; - #if defined(STM32G4) // H7 and WB also have fifo.. + #if defined(STM32G4) || defined(STM32H7) // WB also has a fifo.. huart.FifoMode = UART_FIFOMODE_ENABLE; #endif @@ -701,6 +701,12 @@ bool uart_init(machine_uart_obj_t *uart_obj, uart_obj->char_width = CHAR_WIDTH_8BIT; } + #if defined(STM32H7) + HAL_UARTEx_SetTxFifoThreshold(&huart, UART_TXFIFO_THRESHOLD_1_8); + HAL_UARTEx_SetRxFifoThreshold(&huart, UART_RXFIFO_THRESHOLD_1_8); + HAL_UARTEx_EnableFifoMode(&huart); + #endif + uart_obj->mp_irq_trigger = 0; uart_obj->mp_irq_obj = NULL; @@ -1141,6 +1147,9 @@ 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. + timeout = (16 + 1) * self->timeout_char; #else // The timeout specified here is for waiting for the TX data register to // become empty (ie between chars), as well as for the final char to be |