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Merge pull request #1895 from bcostm/fix_l0_force_serial_reset 

[STM32L0] Add USART force/release Reset at Init phase
pull/1941/head
Martin Kojtal 2016-06-14 21:53:45 +02:00 committed by GitHub
parent 4dcefa604a 6e645e50e8
commit 53d7115b49
1 changed files with 10 additions and 0 deletions
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10
hal/targets/hal/TARGET_STM/TARGET_STM32L0/serial_api.c
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@ -93,23 +93,31 @@ void serial_init(serial_t *obj, PinName tx, PinName rx)
// Enable UART clock
#if defined(USART1_BASE)
if (obj->uart == UART_1) {
__HAL_RCC_USART1_FORCE_RESET();
__HAL_RCC_USART1_RELEASE_RESET();
__HAL_RCC_USART1_CLK_ENABLE();
obj->index = 0;
}
#endif
if (obj->uart == UART_2) {
__HAL_RCC_USART2_FORCE_RESET();
__HAL_RCC_USART2_RELEASE_RESET();
__HAL_RCC_USART2_CLK_ENABLE();
obj->index = 1;
}
if (obj->uart == LPUART_1) {
__HAL_RCC_LPUART1_FORCE_RESET();
__HAL_RCC_LPUART1_RELEASE_RESET();
__HAL_RCC_LPUART1_CLK_ENABLE();
obj->index = 2;
}
#if defined(USART4_BASE)
if (obj->uart == UART_4) {
__HAL_RCC_USART4_FORCE_RESET();
__HAL_RCC_USART4_RELEASE_RESET();
__HAL_RCC_USART4_CLK_ENABLE();
obj->index = 3;
}
@ -117,6 +125,8 @@ void serial_init(serial_t *obj, PinName tx, PinName rx)
#if defined(USART5_BASE)
if (obj->uart == UART_5) {
__HAL_RCC_USART5_FORCE_RESET();
__HAL_RCC_USART5_RELEASE_RESET();
__HAL_RCC_USART5_CLK_ENABLE();
obj->index = 4;
}