add new LED key systick sample code

guowenxue

2018-05-16 a22d9c106276bb1819e583012d7ea41b6529b318

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/****************************************************************************
*   Copyright: (C)2018 Î人ÁèÔÆÎïÍøÖÇ¿ÆʵÑéÊÒ www.iot-yun.com
*      Author: GuoWenxue<guowenxue@gmail.com> QQ: 281143292
* Description: ·Ü¶·STM32v5¿ª·¢°å LEDÉ豸²Ù×÷º¯Êý½Ó¿Ú
* 
*   ChangeLog:
*        °æ±¾ºÅ     ÈÕÆÚ       ×÷Õß      ËµÃ÷
*        V1.0.0  2018.05.10  GuoWenxue   ·¢²¼¸Ã°æ±¾
****************************************************************************/
 
#include "stm32f10x.h"
#include "stm32v5_led.h"
 
/* STM32v5 Èý¸öLED·Ö±ðÁ¬½Ó GPIO¿ÚµÄ PB5(LED1)¡¢PD6(LED2)¡¢PD3(LED3) */
led_gpio_t    leds_gpio[MAX_LED] =
{
        {LED1, GPIOB, GPIO_Pin_5}, /* LED1 ÓõÄGPB5 */
        {LED2, GPIOD, GPIO_Pin_6}, /* LED2 ÓõÄGPD6 */
        {LED3, GPIOD, GPIO_Pin_3}, /* LED3 ÓõÄGPD3 */        
};
 
/* º¯Êý˵Ã÷:  ÅäÖàLED GPIO¿ÚºÍʱÖÓ£»
 * ²ÎÊý˵Ã÷:  ÎÞ
 * ·µ»ØÖµ:    ÎÞ
 */
void init_led_gpio(void)
{
    int                i;
    GPIO_InitTypeDef   GPIO_InitStructure;
 
    /* Ê¹ÄÜPBºÍPD×é GPIOµÄʱÖÓ */
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB | RCC_APB2Periph_GPIOD , ENABLE);    
    
    /*ÉèÖàPB5(LED1), PD6(LED2), PD3(LED3)Ϊ GPIO Êä³öÍÆÃâģʽ£¬¿ÚÏß·­×ªËÙ¶ÈΪ50MHz */
    for(i=0; i<MAX_LED; i++)
    {
        /*ÉèÖàPB5(LED1)Ϊ GPIO Êä³öÍÆÃâģʽ£¬¿ÚÏß·­×ªËÙ¶ÈΪ50MHz */
        GPIO_InitStructure.GPIO_Pin = leds_gpio[i].pin;                     
        GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
        GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
        GPIO_Init(leds_gpio[i].group, &GPIO_InitStructure);                        
  }
}
 
 
/* º¯Êý˵Ã÷:  µãÁÁ»òÃðµôÏàÓ¦LED
 * ²ÎÊý˵Ã÷:  which: Òª²Ù×÷ÄĸöLED,ÆäÖµÓ¦¸ÃΪ LED1¡¢LED2 »ò LED3£
 *            cmd: ÒªÁÁ»¹ÊÇÃð, ÆäÖµ¶ÔӦΪ ON »ò OFF
 * ·µ»ØÖµ:    ÎÞ
 */
void turn_led(int which, int cmd)
{
   if(which<0 || which> MAX_LED )
         return;
     
     if(OFF == cmd)
         GPIO_ResetBits(leds_gpio[which].group, leds_gpio[which].pin);
     else
         GPIO_SetBits(leds_gpio[which].group, leds_gpio[which].pin);
}