}
static void
-ao_usart_init(struct ao_stm_usart *usart)
+ao_usart_init(struct ao_stm_usart *usart, int hw_flow)
{
usart->reg->cr1 = ((0 << STM_USART_CR1_OVER8) |
(1 << STM_USART_CR1_UE) |
(0 << STM_USART_CR3_IREN) |
(0 << STM_USART_CR3_EIE));
+ if (hw_flow)
+ usart->reg->cr3 |= ((1 << STM_USART_CR3_CTSE) |
+ (1 << STM_USART_CR3_RTSE));
+
/* Pick a 9600 baud rate */
ao_usart_set_speed(usart, AO_SERIAL_SPEED_9600);
}
static void
ao_usart_set_flow(struct ao_stm_usart *usart)
{
- usart->reg->cr3 |= ((1 << STM_USART_CR3_CTSE) |
- (1 << STM_USART_CR3_RTSE));
}
#endif
stm_rcc.apb2enr |= (1 << STM_RCC_APB2ENR_USART1EN);
ao_stm_usart1.reg = &stm_usart1;
- ao_usart_init(&ao_stm_usart1);
+ ao_usart_init(&ao_stm_usart1, 0);
stm_nvic_set_enable(STM_ISR_USART1_POS);
- stm_nvic_set_priority(STM_ISR_USART1_POS, 4);
+ stm_nvic_set_priority(STM_ISR_USART1_POS, AO_STM_NVIC_MED_PRIORITY);
#if USE_SERIAL_1_STDIN && !DELAY_SERIAL_1_STDIN
ao_add_stdio(_ao_serial1_pollchar,
ao_serial1_putchar,
stm_rcc.apb1enr |= (1 << STM_RCC_APB1ENR_USART2EN);
ao_stm_usart2.reg = &stm_usart2;
- ao_usart_init(&ao_stm_usart2);
-#if USE_SERIAL_2_FLOW && !USE_SERIAL_2_SW_FLOW
- ao_usart_set_flow(&ao_stm_usart2);
-#endif
+ ao_usart_init(&ao_stm_usart2, USE_SERIAL_2_FLOW && !USE_SERIAL_2_SW_FLOW);
stm_nvic_set_enable(STM_ISR_USART2_POS);
- stm_nvic_set_priority(STM_ISR_USART2_POS, 4);
+ stm_nvic_set_priority(STM_ISR_USART2_POS, AO_STM_NVIC_MED_PRIORITY);
#if USE_SERIAL_2_STDIN && !DELAY_SERIAL_2_STDIN
ao_add_stdio(_ao_serial2_pollchar,
ao_serial2_putchar,
stm_rcc.apb1enr |= (1 << STM_RCC_APB1ENR_USART3EN);
ao_stm_usart3.reg = &stm_usart3;
- ao_usart_init(&ao_stm_usart3);
+ ao_usart_init(&ao_stm_usart3, 0);
stm_nvic_set_enable(STM_ISR_USART3_POS);
- stm_nvic_set_priority(STM_ISR_USART3_POS, 4);
+ stm_nvic_set_priority(STM_ISR_USART3_POS, AO_STM_NVIC_MED_PRIORITY);
#if USE_SERIAL_3_STDIN && !DELAY_SERIAL_3_STDIN
ao_add_stdio(_ao_serial3_pollchar,
ao_serial3_putchar,