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Merge pull request #5894 from bcostm/fix_serial_7bit 

STM32: fix serial 7bit data format
pull/5912/head
Cruz Monrreal 2018-01-23 16:21:00 -06:00 committed by GitHub
parent 669a85affa 2cdc110747
commit 8d7397884e
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 16 additions and 9 deletions
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25
targets/TARGET_STM/serial_api.c
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@ -474,11 +474,17 @@ void serial_format(serial_t *obj, int data_bits, SerialParity parity, int stop_b
}
switch (data_bits) {
case 9:
MBED_ASSERT(parity == UART_PARITY_NONE);
obj_s->databits = UART_WORDLENGTH_9B;
case 7:
if (parity != UART_PARITY_NONE) {
obj_s->databits = UART_WORDLENGTH_8B;
} else {
#if defined UART_WORDLENGTH_7B
obj_s->databits = UART_WORDLENGTH_7B;
#else
error("7-bit data format without parity is not supported");
#endif
}
break;
default:
case 8:
if (parity != UART_PARITY_NONE) {
obj_s->databits = UART_WORDLENGTH_9B;
@ -486,15 +492,16 @@ void serial_format(serial_t *obj, int data_bits, SerialParity parity, int stop_b
obj_s->databits = UART_WORDLENGTH_8B;
}
break;
#if defined UART_WORDLENGTH_7B
case 7:
case 9:
if (parity != UART_PARITY_NONE) {
obj_s->databits = UART_WORDLENGTH_8B;
error("Parity is not supported with 9-bit data format");
} else {
obj_s->databits = UART_WORDLENGTH_7B;
obj_s->databits = UART_WORDLENGTH_9B;
}
break;
#endif
default:
error("Only 7, 8 or 9-bit data formats are supported");
break;
}
if (stop_bits == 2) {