beaglebone点亮LED-uptown的回答

beaglebone点亮LED

2019-07-15 15:08发布

beaglebone点亮LED

这两天配了下开发环境，粗略的把GPIO搞定，写了个亮灯程序。
现贴出一段代码：
/* Selecting LED pin for use. */
GPIO1PinMuxSetup(21);
GPIO1PinMuxSetup(22);
GPIO1PinMuxSetup(23);
GPIO1PinMuxSetup(24);

/* Enabling the GPIO module. */<r_output);
GPIODirModeSet(GPIO_INSTANCE_ADDRESS,
               24,
               GPIO_DIR_OUTPUT);
while(1)sp;             21,
               GPIO_DIR_OUTPUT);
GPIODirModeSet(GPIO_INSTANCE_ADDRESS,
               22,
               GPIO_DIR_OUTPUT);
GPIODirModeSet(GPIO_INSTANCE_ADDRESS,
               23</r_output);

               GPIO_DIR_OUTPUT);
GPIODirModeSet(GPIO_INSTANCE_ADDRESS,
               24,
               GPIO_DIR_OUTPUT);
while(1)
{
      /* Driving a logic HIGH on the GPIO pin. */
      GPIOPinWrite(GPIO_INSTANCE_ADDRESS,
                  21,
                  GPIO_PIN_HIGH);
      GPIOPinWrite(GPIO_INSTANCE_ADDRESS,
                  22,
                  GPIO_PIN_HIGH);
      GPIOPinWrite(GPIO_INSTANCE_ADDRESS,
                  GPIO_INSTANCE_PIN_NUMBER,
                  GPIO_PIN_HIGH);
      GPIOPinWrite(GPIO_INSTANCE_ADDRESS,
                  24,
                  GPIO_PIN_HIGH);
      Delay(0x3FFFF);
      /* Driving a logic LOW on the GPIO pin. */
      GPIOPinWrite(GPIO_INSTANCE_ADDRESS,
                  21,
                  GPIO_PIN_LOW);
      GPIOPinWrite(GPIO_INSTANCE_ADDRESS,
                  22,
                  GPIO_PIN_LOW);
      GPIOPinWrite(GPIO_INSTANCE_ADDRESS,
                  GPIO_INSTANCE_PIN_NUMBER,
                  GPIO_PIN_LOW);
      GPIOPinWrite(GPIO_INSTANCE_ADDRESS,
                  24,
                  GPIO_PIN_LOW);
      Delay(0x3FFFF);
}