UART: shut down interrupt before jumping to user code

Lefuneste83 · Mar 6, 2013 · 4e9091b · 4e9091b
1 parent 86f8cc3
commit 4e9091b
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Showing 3 changed files with 24 additions and 0 deletions.
diff --git a/main.c b/main.c
@@ -226,8 +226,13 @@ int main()
 
 	while (UART_busy());
 	printf("Jump!\n");
+	while (UART_busy());
+	UART_deinit();
+
 	new_execute_user_code();
 
+	UART_init(UART_RX, UART_TX, 2000000);
+
 	printf("This should never happen\n");
 
 	while (UART_busy());

diff --git a/uart.c b/uart.c
@@ -337,6 +337,24 @@ int UART_baud(int baud)
     return baud;
 }
 
+void UART_deinit() {
+	switch(port)
+	{
+		case 0:
+			NVIC_DisableIRQ(UART0_IRQn);
+			break;
+		case 1:
+			NVIC_DisableIRQ(UART1_IRQn);
+			break;
+		case 2:
+			NVIC_DisableIRQ(UART2_IRQn);
+			break;
+		case 3:
+			NVIC_DisableIRQ(UART3_IRQn);
+			break;
+	}
+}
+
 uint32_t UART_send(const uint8_t *data, uint32_t buflen) {
     uint32_t bytes = 0;
 

diff --git a/uart.h b/uart.h
@@ -18,6 +18,7 @@ typedef struct
 
 // UART_init(PinName rxpin, PinName txpin);
 void		UART_init(PinName rxpin, PinName txpin, int baud);
+void        UART_deinit();
 void		UART_pin_init(PinName rxpin, PinName txpin);
 int			UART_baud(int baud);
 uint32_t	UART_send(const uint8_t *buf, uint32_t buflen);