diff options
Diffstat (limited to 'stmhal/uart.c')
| -rw-r--r-- | stmhal/uart.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/stmhal/uart.c b/stmhal/uart.c index 8f263dbd81..5bbd9f299e 100644 --- a/stmhal/uart.c +++ b/stmhal/uart.c @@ -311,6 +311,14 @@ STATIC mp_obj_t pyb_uart_init_helper(pyb_uart_obj_t *self, uint n_args, const mp /// initialised (it has the settings from the last initialisation of /// the bus, if any). If extra arguments are given, the bus is initialised. /// See `init` for parameters of initialisation. +/// +/// The physical pins of the UART busses are: +/// +/// - `UART(4)` is on `XA`: `(TX, RX) = (X1, X2) = (PA0, PA1)` +/// - `UART(1)` is on `XB`: `(TX, RX) = (X9, X10) = (PB6, PB7)` +/// - `UART(6)` is on `YA`: `(TX, RX) = (Y1, Y2) = (PC6, PC7)` +/// - `UART(3)` is on `YB`: `(TX, RX) = (Y9, Y10) = (PB10, PB11)` +/// - `UART(2)` is on: `(TX, RX) = (X3, X4) = (PA2, PA3)` STATIC mp_obj_t pyb_uart_make_new(mp_obj_t type_in, uint n_args, uint n_kw, const mp_obj_t *args) { // check arguments mp_arg_check_num(n_args, n_kw, 1, MP_OBJ_FUN_ARGS_MAX, true); |