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Add call to SystemCoreClockUpdate() and Reset peripheral before init … 

…phase.

patch from bcostm
pull/1909/head
ohagendorf 2016-06-12 18:56:16 +02:00 committed by Olaf Hagendorf
parent 9ddbb1f831
commit 8292dd2fd2
1 changed files with 19 additions and 0 deletions
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19
hal/targets/hal/TARGET_STM/TARGET_STM32F7/serial_api.c
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@ -67,6 +67,9 @@ static void init_uart(serial_t *obj)
UartHandle.Init.Mode = UART_MODE_TX_RX;
}
// Fix because HAL_RCC_GetHCLKFreq() don't update anymore SystemCoreClock
SystemCoreClockUpdate();
if (HAL_UART_Init(&UartHandle) != HAL_OK) {
error("Cannot initialize UART");
}
@ -85,43 +88,59 @@ void serial_init(serial_t *obj, PinName tx, PinName rx)
// Enable USART clock
switch (obj->uart) {
case UART_1:
__HAL_RCC_USART1_FORCE_RESET();
__HAL_RCC_USART1_RELEASE_RESET();
__USART1_CLK_ENABLE();
obj->index = 0;
break;
case UART_2:
__HAL_RCC_USART2_FORCE_RESET();
__HAL_RCC_USART2_RELEASE_RESET();
__USART2_CLK_ENABLE();
obj->index = 1;
break;
#if defined(USART3_BASE)
case UART_3:
__HAL_RCC_USART3_FORCE_RESET();
__HAL_RCC_USART3_RELEASE_RESET();
__USART3_CLK_ENABLE();
obj->index = 2;
break;
#endif
#if defined(UART4_BASE)
case UART_4:
__HAL_RCC_UART4_FORCE_RESET();
__HAL_RCC_UART4_RELEASE_RESET();
__UART4_CLK_ENABLE();
obj->index = 3;
break;
#endif
#if defined(UART5_BASE)
case UART_5:
__HAL_RCC_UART5_FORCE_RESET();
__HAL_RCC_UART5_RELEASE_RESET();
__UART5_CLK_ENABLE();
obj->index = 4;
break;
#endif
case UART_6:
__HAL_RCC_USART6_FORCE_RESET();
__HAL_RCC_USART6_RELEASE_RESET();
__USART6_CLK_ENABLE();
obj->index = 5;
break;
#if defined(UART7_BASE)
case UART_7:
__HAL_RCC_UART7_FORCE_RESET();
__HAL_RCC_UART7_RELEASE_RESET();
__UART7_CLK_ENABLE();
obj->index = 6;
break;
#endif
#if defined(UART8_BASE)
case UART_8:
__HAL_RCC_UART8_FORCE_RESET();
__HAL_RCC_UART8_RELEASE_RESET();
__UART8_CLK_ENABLE();
obj->index = 7;
break;