main.c

ucos arm 编程 通过 ARM的 rPDATC（低四位）和rPDATE（4~7 位）扩展4×4的键盘

#include "..\startup\44b.h"
#include"..\inc\44blib.h"
#include"..\inc\keyboard16.h"
#include "..\startup\option.h"
#include"..\inc\def.h"
int Main(int argc, char **argv)
{
unsigned int key;
unsigned int tempkey=0;
Uart_SendByte(0xa);//换行
Uart_SendByte(0xd);//回车
       
	for (;;){
		
		key=GetKey();
		key&=0x000f;
		if(key>9){
			Uart_SendByte(0x31);
			tempkey=key-10;
			Uart_SendByte(tempkey|=0x0030);
			}
		else
	      	Uart_SendByte(key|0x0030);
	       Uart_SendByte(0x2c);
	}

return 0;
}