UART — UART1 中断收发

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#include "main.h"
__IO uint8_t g_uart_ready = 0;    

int main(void)
{      
    /* ϵͳʱ */
    system_clock_config(); 

    /* GPIOʼ */
    gpio_init();
    
    /* UARTʼ */
    uart_init();

    /* NVICʼ */
    nvic_init(); 
    
    while(1)
    {  
        /* UART ʹжϽ */
        std_uart_cr1_interrupt_enable(UART1,UART_CR1_INTERRUPT_RXNE);
 
        while(!g_uart_ready);
        g_uart_ready = 0;
        
        /* UART ʹжϷ */
        std_uart_cr1_interrupt_enable(UART1,UART_CR1_INTERRUPT_TXE);

        while(!g_uart_ready);
        g_uart_ready = 0;        
    }
}