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stmhal: Add better support for UART having Tx and Rx on different ports.

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Thanks to Dave Hylands for the patch.
This commit is contained in:
Damien George 2015-08-03 00:20:08 +01:00
parent c0e39864c6
commit a632037866
1 changed files with 11 additions and 11 deletions
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22
stmhal/uart.c
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@ -114,9 +114,10 @@ void uart_deinit(void) {
STATIC bool uart_init2(pyb_uart_obj_t *uart_obj) {
USART_TypeDef *UARTx;
IRQn_Type irqn;
uint32_t GPIO_Pin;
uint32_t GPIO_Pin, GPIO_Pin2;
uint8_t GPIO_AF_UARTx = 0;
GPIO_TypeDef* GPIO_Port = NULL;
GPIO_TypeDef* GPIO_Port2 = NULL;
switch (uart_obj->uart_id) {
#if defined(MICROPY_HW_UART1_PORT) && defined(MICROPY_HW_UART1_PINS)
@ -197,18 +198,10 @@ STATIC bool uart_init2(pyb_uart_obj_t *uart_obj) {
irqn = UART5_IRQn;
GPIO_AF_UARTx = GPIO_AF8_UART5;
GPIO_Port = MICROPY_HW_UART5_TX_PORT;
GPIO_Port2 = MICROPY_HW_UART5_RX_PORT;
GPIO_Pin = MICROPY_HW_UART5_TX_PIN;
GPIO_Pin2 = MICROPY_HW_UART5_RX_PIN;
__UART5_CLK_ENABLE();
// The code after the case only deals with the case where the TX & RX
// pins are on the same port. UART5 has them on different ports.
GPIO_InitTypeDef GPIO_InitStructure;
GPIO_InitStructure.Pin = MICROPY_HW_UART5_RX_PIN;
GPIO_InitStructure.Speed = GPIO_SPEED_HIGH;
GPIO_InitStructure.Mode = GPIO_MODE_AF_PP;
GPIO_InitStructure.Pull = GPIO_PULLUP;
GPIO_InitStructure.Alternate = GPIO_AF_UARTx;
HAL_GPIO_Init(MICROPY_HW_UART5_RX_PORT, &GPIO_InitStructure);
break;
#endif
@ -242,6 +235,13 @@ STATIC bool uart_init2(pyb_uart_obj_t *uart_obj) {
GPIO_InitStructure.Alternate = GPIO_AF_UARTx;
HAL_GPIO_Init(GPIO_Port, &GPIO_InitStructure);
// init GPIO for second pin if needed
if (GPIO_Port2 != NULL) {
mp_hal_gpio_clock_enable(GPIO_Port2);
GPIO_InitStructure.Pin = GPIO_Pin2;
HAL_GPIO_Init(GPIO_Port2, &GPIO_InitStructure);
}
// init UARTx
HAL_UART_Init(&uart_obj->uart);