X-Git-Url: https://git.gag.com/?a=blobdiff_plain;f=src%2Fstm%2Fao_arch_funcs.h;h=2c017c79f0191b5b5395f66f508a26748cb048db;hb=04759dddeb29e4de9f7e6b3673dc06c633fa2369;hp=6fcfd5f85a1187e5e3018dd1827ef2e7e507acb4;hpb=7c9a111ac1c88467ce28e03b4a9d3eabc9d7015b;p=fw%2Faltos

diff --git a/src/stm/ao_arch_funcs.h b/src/stm/ao_arch_funcs.h
index 6fcfd5f8..2c017c79 100644
--- a/src/stm/ao_arch_funcs.h
+++ b/src/stm/ao_arch_funcs.h
@@ -278,14 +278,35 @@ ao_i2c_recv(void *block, uint16_t len, uint8_t i2c_index, uint8_t stop);
 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
@@ -370,13 +391,6 @@ static inline void ao_arch_save_stack(void) {
 
 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 */
@@ -433,14 +447,7 @@ static inline void ao_arch_start_scheduler(void) {
 }
 #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