HMI-Board GPIO驅動設計實現

第第頁HMI-BoardGPIO驅動設計實現

開發(fā)板原理圖

從原理圖與開發(fā)板實物圖，我們可以看到給用戶使用的（LED）有兩個，分別為LED_USER1與LED_USER2兩個，對開發(fā)板的LED0與LED1，原理圖如下：

/

#defineUSER2_PINBSP_IO_PORT_02_PIN_10//

rt_pin_mode(TN0_PIN,PIN_MODE_INPUT_PULLUP);

//

#defineUSER2_PINBSP_IO_PORT_02_PIN_10//

#defineTN0_PINBSP_IO_PORT_00_PIN_05//

#defineTN1_PINBSP_IO_PORT_00_PIN_06//

#defineTN2_PINBSP_IO_PORT_00_PIN_07/OnboardTN2pins*/

staticuint8_tled_flash_state=0;

voidled_off(void*args)

{

rt_kprintf("bnt0down!n");

led_flash_state=0;

}

voidled_on(void*args)

{

rt_kprintf("bnt1down!n");

led_flash_state=1;

}

#defineTHREAD_PRIORITY25

#defineTHREAD_STACK_SIZE512

#defineTHREAD_TIMESLICE5

staticrt_thread_ttid1=RT_NULL;

/*線程1的入口函數*/

staticvoidthread_led_flash_entry(void*parameter)

{

staticuint32_tflash_cnt;

while(1)

{

if(led_flash_state==0){

rt_pin_write(USER1_PIN,PIN_LOW);

rt_pin_write(USER2_PIN,PIN_LOW);

}

elseif(led_flash_state==1){

rt_pin_write(USER1_PIN,PIN_HIGH);

rt_pin_write(USER2_PIN,PIN_HIGH);

}

elseif(led_flash_state==2){

if(flash_cnt<50)

{

rt_pin_write(USER1_PIN,PIN_HIGH);

rt_pin_write(USER2_PIN,PIN_LOW);

}

elseif(flash_cnt<100)

{

rt_pin_write(USER1_PIN,PIN_LOW);

rt_pin_write(USER2_PIN,PIN_HIGH);

}

else{

flash_cnt=0;

}

flash_cnt++;

}

rt_thread_mdelay(10);

}

}

voidkey_init(void)

{

/*按鍵0引腳為輸入模式*/

rt_pin_mode(TN0_PIN,PIN_MODE_INPUT_PULLUP);

/*綁定中斷，下降沿模式，回調函數名為beep_on*/

rt_pin_attach_irq(TN0_PIN,PIN_IRQ_MODE_FALLING,led_off,RT_NULL);

/*使能中斷*/

rt_pin_irq_enable(TN0_PIN,PIN_IRQ_ENABLE);

/*按鍵1引腳為輸入模式*/

rt_pin_mode(TN1_PIN,PIN_MODE_INPUT_PULLUP);

/*綁定中斷，下降沿模式，回調函數名為beep_on*/

rt_pin_attach_irq(TN1_PIN,PIN_IRQ_MODE_FALLING,led_on,RT_NULL);

/*使能中斷*/

rt_pin_irq_enable(TN1_PIN,PIN_IRQ_ENABLE);

/*按鍵2引腳為輸入模式*/

rt_pin_mode(TN2_PIN,PIN_MODE_INPUT_PULLUP);

}

voidhal_entry(void)

{

rt_kprintf("nHelloRT-Thread!n");

key_init();

/*創(chuàng)建線程1，名稱是thread1，入口是thread1_entry*/

tid1=rt_thread_create("thread_led",

thread_led_flash_entry,RT_NULL,

THREAD_STACK_SIZE,

THREAD_PRIORITY,THREAD_TIMESLICE);

/*如果獲得線程控制塊，啟動這個線程*/

if(tid1!=RT_NULL)

rt_thread_startup(tid1);

while(1)

{

if(rt_pin_read(TN2_PIN)==0)

{

rt_thread_delay(10);

if(rt_pin_read(TN2_PIN)==0)

led_flash_state=2;

rt_kprintf("nTN2pushdown!n");

}

rt_thread_delay(10);