04.USB不停电下载

代码:
#include "ai8051u.h" //调用头文件
#include "stc32_stc8_usb.h" //调用头文件
void main(void)
{
P_SW2 |= 0x80;
P0M1 = 0x00; P0M0 = 0x00;
P1M1 = 0x00; P1M0 = 0x00;
P2M1 = 0x00; P2M0 = 0x00;
P3M1 = 0x00; P3M0 = 0x00;
P4M1 = 0x00; P4M0 = 0x00;
P5M1 = 0x00; P5M0 = 0x00;
P6M1 = 0x00; P6M0 = 0x00;
P7M1 = 0x00; P7M0 = 0x00;
usb_init(); //USB CDC 接口配置
EA = 1;
while(1)
{
if (bUsbOutReady)
{
// USB_SendData(UsbOutBuffer,OutNumber); //发送数据缓冲区,长度(接收数据原样返回, 用于测试)
printf_usb("1. Read Num:%d\n", OutNumber);
printf_usb("2. Read Num:%d\n", OutNumber);
printf_usb("3. Read Num:%d\n", OutNumber);
printf_usb("4. Read Num:%d\n", OutNumber);
usb_OUT_done();
}
P20 = 0; //P2端口输出低电平
P22 = 0;
}
}
附件:04.USB不停电下载工程.rar