_ao_usart_pollchar(struct ao_stm_usart *usart)
{
int c;
-
+
if (ao_fifo_empty(usart->rx_fifo))
c = AO_READ_AGAIN;
else {
return (char) c;
}
+static inline uint8_t
+_ao_usart_sleep_for(struct ao_stm_usart *usart, uint16_t timeout)
+{
+ return ao_sleep_for(&usart->rx_fifo, timeout);
+}
+
void
ao_usart_putchar(struct ao_stm_usart *usart, char c)
{
ao_usart_set_speed(usart, AO_SERIAL_SPEED_9600);
}
+void
+ao_usart_set_flow(struct ao_stm_usart *usart)
+{
+ usart->reg->cr3 |= ((1 << STM_USART_CR3_CTSE) |
+ (1 << STM_USART_CR3_RTSE));
+}
+
#if HAS_SERIAL_1
struct ao_stm_usart ao_stm_usart1;
return _ao_usart_pollchar(&ao_stm_usart1);
}
+uint8_t
+_ao_serial1_sleep_for(uint16_t timeout)
+{
+ return _ao_usart_sleep_for(&ao_stm_usart1, timeout);
+}
+
+void
+ao_serial1_drain(void)
+{
+ ao_usart_drain(&ao_stm_usart1);
+}
+
void
ao_serial1_set_speed(uint8_t speed)
{
return _ao_usart_pollchar(&ao_stm_usart2);
}
+uint8_t
+_ao_serial2_sleep_for(uint16_t timeout)
+{
+ return _ao_usart_sleep_for(&ao_stm_usart2, timeout);
+}
+
+void
+ao_serial2_drain(void)
+{
+ ao_usart_drain(&ao_stm_usart2);
+}
+
void
ao_serial2_set_speed(uint8_t speed)
{
return _ao_usart_pollchar(&ao_stm_usart3);
}
+uint8_t
+_ao_serial3_sleep_for(uint16_t timeout)
+{
+ return _ao_usart_sleep_for(&ao_stm_usart3, timeout);
+}
+
void
ao_serial3_set_speed(uint8_t speed)
{
stm_nvic_set_enable(STM_ISR_USART1_POS);
stm_nvic_set_priority(STM_ISR_USART1_POS, 4);
-#if USE_SERIAL_1_STDIN
+#if USE_SERIAL_1_STDIN && !DELAY_SERIAL_1_STDIN
ao_add_stdio(_ao_serial1_pollchar,
ao_serial1_putchar,
NULL);
stm_afr_set(&stm_gpioa, 2, STM_AFR_AF7);
stm_afr_set(&stm_gpioa, 3, STM_AFR_AF7);
+#if USE_SERIAL_2_FLOW
+ stm_afr_set(&stm_gpioa, 0, STM_AFR_AF7);
+ stm_afr_set(&stm_gpioa, 1, STM_AFR_AF7);
+#endif
#else
#if SERIAL_2_PD5_PD6
stm_rcc.ahbenr |= (1 << STM_RCC_AHBENR_GPIODEN);
stm_afr_set(&stm_gpiod, 5, STM_AFR_AF7);
stm_afr_set(&stm_gpiod, 6, STM_AFR_AF7);
+#if USE_SERIAL_2_FLOW
+#error "Don't know how to set flowcontrol for serial 2 on PD"
+#endif
#else
#error "No SERIAL_2 port configuration specified"
-#endif
+#endif
#endif
/* Enable USART */
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
+ ao_usart_set_flow(&ao_stm_usart2);
+#endif
stm_nvic_set_enable(STM_ISR_USART2_POS);
stm_nvic_set_priority(STM_ISR_USART2_POS, 4);
-#if USE_SERIAL_2_STDIN
+#if USE_SERIAL_2_STDIN && !DELAY_SERIAL_2_STDIN
ao_add_stdio(_ao_serial2_pollchar,
ao_serial2_putchar,
NULL);
stm_nvic_set_enable(STM_ISR_USART3_POS);
stm_nvic_set_priority(STM_ISR_USART3_POS, 4);
-#if USE_SERIAL_3_STDIN
+#if USE_SERIAL_3_STDIN && !DELAY_SERIAL_3_STDIN
ao_add_stdio(_ao_serial3_pollchar,
ao_serial3_putchar,
NULL);
#endif
#endif
}
-
-