HAL_UART_Transmit(&huart2, (uint8_t*)msg,strlen(msg), HAL_MAX_DELAY);while(HAL_GPIO_ReadPin(GPIOC, GPIO_PIN_13) == GPIO_PIN_SET) { HAL_GPIO_TogglePin(LD2_GPIO_Port, LD2_Pin); HAL_Delay(100); } HAL_Delay(200);sprintf(msg,"Entering in SLEEP mode\r\n"); HAL_UART_Transmit...
如果if (HAL_GPIO_ReadPin(KEY_GPIO_PORT, KEY_PIN) != GPIO_PIN_RESET ) 这个条件判断语句的结果为真,则表示A.当前按键处于松开状态B.当前按键处于按下状态C.按键的前后两次状态不同D.按键处于延时等待状态的答案是什么.用刷刷题APP,拍照搜索答疑.刷刷题(shuashuati.com)