撿到一天颱風假，但廢了一天也沒做什麼事情，
一轉眼又到了發文的期限，
今天就用昨天的範例程式來點亮開發板上的LED吧。

首先是LED控制的程式，
點亮LED很簡單，
只要拉高或拉低LED的腳位，
就能控制LED的亮滅，
對於晶片腳位的控制我們不需要直接去修改暫存器，
只需要使用TI 提供的驅動就可以來做IO腳的控制，
相關細節可參考TI 的文件 : TI Drivers Runtime APIs (doxygen) - PINCC26XX.h File Reference

Board_Led.c

#include <ti/drivers/pin/PINCC26XX.h>
#include "board_led.h"
#include "Board.h"
PIN_Config ledPinsCfg[] =
{
    // 初始化LED腳位的狀態 : 啟用輸出功能, 關閉輸入功能, 輸出低準位
    Board_PIN_RLED      | PIN_GPIO_OUTPUT_EN   | PIN_INPUT_DIS | PIN_GPIO_LOW,
    Board_PIN_GLED      | PIN_GPIO_OUTPUT_EN   | PIN_INPUT_DIS | PIN_GPIO_LOW,
    PIN_TERMINATE
};
PIN_State  ledPins;
PIN_Handle hLedPins = NULL;
void Board_initLeds(void)
{
    // 呼叫PIN_open 來初始化LED 腳位
    hLedPins = PIN_open(&ledPins, ledPinsCfg);
}
// 控制指定的LED 開/關
void Board_Led_set(BOARD_LED led, LED_Satus status)
{
    if (hLedPins == NULL)
        return;
    switch(led)
    {
    case BOARD_LED_RED:
        PIN_setOutputValue(hLedPins, Board_PIN_RLED, status);
        break;
    case BOARD_LED_GREEN:
        PIN_setOutputValue(hLedPins, Board_PIN_GLED, status);
        break;
    default:
        break;
    }
}

Board_led.h

#ifndef BOARD_LED_H
#define BOARD_LED_H
typedef enum{
  BOARD_LED_RED,
  BOARD_LED_GREEN
}BOARD_LED;
typedef enum{
  LED_OFF = 0,
  LED_ON
}LED_Satus;
void Board_initLeds(void);
void Board_Led_set(BOARD_LED led, LED_Satus status);
#endif // BOARD_LED_H

simple_peripheral.c

static void SimplePeripheral_init(void)
{
  ...
  // 初始化 LED
  Board_initLeds();
  ...
}

...

static void SimplePeripheral_processCharValueChangeEvt(uint8_t paramId)
{
  uint8_t newValue;
  switch(paramId)
  {
    case SIMPLEPROFILE_CHAR1:
      SimpleProfile_GetParameter(SIMPLEPROFILE_CHAR1, &newValue);
      /*
       * 0x01 : Red LED ON
       * 0x02 : Red LED OFF
       * 0x03 : Green LED ON
       * 0x04 : Green LED OFF
       * */
      switch(newValue)
      {
      case 0x01:
          Board_Led_set(BOARD_LED_RED, LED_ON);
          break;
      case 0x02:
          Board_Led_set(BOARD_LED_RED, LED_OFF);
          break;
      case 0x03:
          Board_Led_set(BOARD_LED_GREEN, LED_ON);
          break;
      case 0x04:
          Board_Led_set(BOARD_LED_GREEN, LED_OFF);
          break;
      default:
          break;
      }
      Display_printf(dispHandle, SP_ROW_STATUS_1, 0, "Char 1: %d",  (uint16_t)newValue);
      break;
    case SIMPLEPROFILE_CHAR3:
      SimpleProfile_GetParameter(SIMPLEPROFILE_CHAR3, &newValue);
      Display_printf(dispHandle, SP_ROW_STATUS_1, 0, "Char 3: %d",  (uint16_t)newValue);
      break;
    default:
      // should not reach here!
      break;
  }
}

實測影片