用的這個(gè)例程，加了個(gè)按鍵發(fā)送USB數(shù)據(jù)，主機(jī)接收不到

int?main()
{
??uint16_t?value?=?0;
????GPIOB_ModeCfg(?GPIO_Pin_23,?GPIO_ModeIN_PU?);
??SetSysClock(?CLK_SOURCE_PLL_60MHz?);

??DebugInit();??//PA9
??printf("start\n");

??InitUSBDevPara();
??InitUSBDevice();

??PFIC_EnableIRQ(?USB_IRQn?);

??while(1)
??{
????USB_IRQProcessHandler();
????if(value?==?0)
????{
??????if(!GPIOB_ReadPortPin(GPIO_Pin_23))
??????{
????????SendUSBData("遙遙領(lǐng)先123",?11);
????????value?=?10000;
??????}
????}
????if(value?>?0)value?--;
??}
}

您好，字符串的末尾加上‘\n’，如下

SendUSBData("遙遙領(lǐng)先123\n", 12);