diff options
Diffstat (limited to 'ports/esp32/machine_uart.c')
| -rw-r--r-- | ports/esp32/machine_uart.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/ports/esp32/machine_uart.c b/ports/esp32/machine_uart.c index b7adbf81c..b5c5c016a 100644 --- a/ports/esp32/machine_uart.c +++ b/ports/esp32/machine_uart.c @@ -306,7 +306,12 @@ static void mp_machine_uart_init_helper(machine_uart_obj_t *self, size_t n_args, } self->flowcontrol = args[ARG_flow].u_int; } - check_esp_err(uart_set_hw_flow_ctrl(self->uart_num, self->flowcontrol, UART_FIFO_LEN - UART_FIFO_LEN / 4)); + #if ESP_IDF_VERSION >= ESP_IDF_VERSION_VAL(5, 2, 0) + uint8_t uart_fifo_len = UART_HW_FIFO_LEN(self->uart_num); + #else + uint8_t uart_fifo_len = UART_FIFO_LEN; + #endif + check_esp_err(uart_set_hw_flow_ctrl(self->uart_num, self->flowcontrol, uart_fifo_len - uart_fifo_len / 4)); } static mp_obj_t mp_machine_uart_make_new(const mp_obj_type_t *type, size_t n_args, size_t n_kw, const mp_obj_t *args) { |