/*** *** *** *** *** *** *** *** *** *** *** *** *** * * File Name : KeyScan * Description : Serial print out the corresponding key value *******************************************************************************/ #include"stm32f10x.h" #include"KeyScan.h" #include"SysTick.h" #include"USART.h" /******************************************************************************* * Function Name : main * Description : Main program. * Input : None * Output : None * Return : None *******************************************************************************/ int main(void) { SysTick_Init() //延时初始化 USART_GPIO_Config() //串口初始化 USART_Config() Keyboard_Interrupt_Init() //矩阵键盘初始化 while(1) { printf("\nBelieve yourself\n") delay_ms(1500) if(Keyboard_Val) { switch(Keyboard_Val) { case 1:printf("\n1\n") Keyboard_Val=0 break case 2:printf("\n2\n") Keyboar

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