1 files changed, 12 insertions, 3 deletions
diff --git a/main.cpp b/main.cpp
index 468a0b9..75468ed 100644
--- a/main.cpp
+++ b/main.cpp
@@ -1,4 +1,5 @@
 #include "stm32.h"
+#include "interrupt.h"
 
 volatile unsigned int cnt;
 
@@ -60,6 +61,12 @@ void i2c_read_reg(uint8_t addr, uint8_t reg, uint8_t len, uint8_t* buf) {
 	}
 }
 
+template<>
+void interrupt<Interrupt::USART1>() {
+	USART1.DR;
+	GPIOA.ODR ^= 1 << 5;
+}
+
 void usart_send(uint8_t data) {
 	while(!(USART1.SR & 0x80)); // Wait for TXE.
 	
@@ -135,14 +142,16 @@ int main() {
 	
 	RCC.enable(RCC.USART1);
 	USART1.BRR = 7500; // 9600 baud
-	USART1.CR1 = 0x2008;
+	USART1.CR1 = 0x202c;
+	
+	Interrupt::enable(Interrupt::USART1);
 	
 	while(1) {
 		cnt++;
 		if(cnt & (1 << 20)) {
-			GPIOA.ODR = 1 << 5;
+			//GPIOA.ODR = 1 << 5;
 		} else {
-			GPIOA.ODR = 0;
+			//GPIOA.ODR = 0;
 		}
 		
 		if(!(cnt & ((1 << 20) - 1))) {