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#ifndef USART_H
#define USART_H
template<>
void interrupt<Interrupt::USART1>() {
USART1.DR;
GPIOA.ODR ^= 1 << 5;
}
void usart_enable() {
RCC.enable(RCC.USART1);
USART1.BRR = 7500; // 9600 baud
USART1.CR1 = 0x202c;
Interrupt::enable(Interrupt::USART1);
}
void usart_send(uint8_t data) {
while(!(USART1.SR & 0x80)); // Wait for TXE.
USART1.DR = data;
}
#endif
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