#define ao_gpio_get(port, bit, pin) stm_gpio_get(port, bit)
+#define ao_gpio_set_bits(port, bits) stm_gpio_set_bits(port, bits)
+
+#define ao_gpio_clr_bits(port, bits) stm_gpio_clr_bits(port, bits);
+
+
#define ao_enable_output(port,bit,pin,v) do { \
ao_enable_port(port); \
ao_gpio_set(port, bit, pin, v); \
void
ao_i2c_init(void);
+#if USE_SERIAL_1_SW_FLOW || USE_SERIAL_2_SW_FLOW || USE_SERIAL_3_SW_FLOW
+#define HAS_SERIAL_SW_FLOW 1
+#else
+#define HAS_SERIAL_SW_FLOW 0
+#endif
+
+#if USE_SERIAL_1_FLOW && !USE_SERIAL_1_SW_FLOW || USE_SERIAL_2_FLOW && !USE_SERIAL_2_SW_FLOW || USE_SERIAL_3_FLOW && !USE_SERIAL_3_SW_FLOW
+#define HAS_SERIAL_HW_FLOW 1
+#else
+#define HAS_SERIAL_HW_FLOW 0
+#endif
+
/* ao_serial_stm.c */
struct ao_stm_usart {
struct ao_fifo rx_fifo;
struct ao_fifo tx_fifo;
struct stm_usart *reg;
- uint8_t tx_started;
+ uint8_t tx_running;
+ uint8_t draining;
+#if HAS_SERIAL_SW_FLOW
+ /* RTS - 0 if we have FIFO space, 1 if not
+ * CTS - 0 if we can send, 0 if not
+ */
+ struct stm_gpio *gpio_rts;
+ struct stm_gpio *gpio_cts;
+ uint8_t pin_rts;
+ uint8_t pin_cts;
+ uint8_t rts;
+#endif
};
#if HAS_SERIAL_1
static inline void ao_arch_restore_stack(void) {
uint32_t sp;
- uint32_t control;
-
- asm("mrs %0,control" : "=&r" (control));
- control |= (1 << 1);
- asm("msr control,%0" : : "r" (control));
- asm("isb");
-
sp = (uint32_t) ao_cur_task->sp;
/* Switch stacks */
}
#endif
-static inline void ao_arch_isr_stack(void) {
- uint32_t control;
-
- asm("mrs %0,control" : "=&r" (control));
- control &= ~(1 << 1);
- asm("msr control,%0" : : "r" (control));
- asm("isb");
-}
+#define ao_arch_isr_stack()
#endif