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stm32/uart: Add support for 7-bit modes: 7N1 and 7N2.

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This commit is contained in:
Peter D. Gray 2017-12-20 10:31:05 -05:00 committed by Damien George
parent c73360bfdb
commit 7a46d9ae73
1 changed files with 12 additions and 1 deletions
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13
ports/stm32/uart.c
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@ -500,7 +500,14 @@ STATIC void pyb_uart_print(const mp_print_t *print, mp_obj_t self_in, mp_print_k
if (!self->is_enabled) {
mp_printf(print, "UART(%u)", self->uart_id);
} else {
mp_int_t bits = (self->uart.Init.WordLength == UART_WORDLENGTH_8B ? 8 : 9);
mp_int_t bits;
switch (self->uart.Init.WordLength) {
#ifdef UART_WORDLENGTH_7B
case UART_WORDLENGTH_7B: bits = 7; break;
#endif
case UART_WORDLENGTH_8B: bits = 8; break;
case UART_WORDLENGTH_9B: default: bits = 9; break;
}
if (self->uart.Init.Parity != UART_PARITY_NONE) {
bits -= 1;
}
@ -580,6 +587,10 @@ STATIC mp_obj_t pyb_uart_init_helper(pyb_uart_obj_t *self, size_t n_args, const
init->WordLength = UART_WORDLENGTH_8B;
} else if (bits == 9) {
init->WordLength = UART_WORDLENGTH_9B;
#ifdef UART_WORDLENGTH_7B
} else if (bits == 7) {
init->WordLength = UART_WORDLENGTH_7B;
#endif
} else {
mp_raise_ValueError("unsupported combination of bits and parity");
}