补充下，看起来一直停留在标红色的那句上。
uint8_t USART_Scanf(uint32_t value)
{
uint32_t index = 0;
uint32_t tmp[2] = {0, 0};
while (index < 2)
{
/* Loop until RXNE = 1 */
while (USART_GetFlagStatus(USART1, USART_FLAG_RXNE) == RESET)
{
}
tmp[index++] = (USART_ReceiveData(USART1));
if ((tmp[index - 1] < 0x30) || (tmp[index - 1] > 0x39))
{
printf("\n\r Please enter valid number between 0 and 9 \n\r");
index--;
}
}
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楼主
