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Arduino

GPIO初始化

#define XX_GPIO_PIN 1 //1,2,3,.....A0,A1,A2... void xx_gpio_init(void) { pinMode(XX_GPIO_PIN,OUTPUT); } bool xx_gpio_read(void) { pinMode(XX_GPIO_PIN,INPUT); return digitalRead(XX_GPIO_PIN); } void xx_gpio_write(bool b) { pinMode(XX_GPIO_PIN,OUTPUT); if(b) digitalWrite(XX_GPIO_PIN, HIGH); else digitalWrite(XX_GPIO_PIN, LOW); }

GPIO中断

void xx_enable_irq(void) { pinMode(XX_GPIO_PIN, INPUT_PULLUP); attachInterrupt(digitalPinToInterrupt(XX_GPIO_PIN), pwm_in_irqhandle, RISING);//LOW,CHANGE ,RISING ,FALLING ,HIGH } void xx_disable_irq(void) { detachInterrupt(digitalPinToInterrupt(XX_GPIO_PIN)); } void xx_irqhandler(enum HAL_GPIO_PIN_T pin) { Serial.println(" hal irq"); /* APP_MESSAGE_BLOCK msg; msg.mod_id = APP_MODUAL_XX; msg.msg_body.message_id = XX_EINT_EVT; msg.msg_body.message_ptr = (uint32_t) NULL; app_mailbox_put(&msg); */ }

pwm

// Set pin 9's PWM frequency to 3906 Hz (31250/8 = 3906) // Note that the base frequency for pins 3, 9, 10, and 11 is 31250 Hz //pwm_freq_set(9, 8); // Set pin 6's PWM frequency to 62500 Hz (62500/1 = 62500) // Note that the base frequency for pins 5 and 6 is 62500 Hz //pwm_freq_set(6, 1); // Set pin 10's PWM frequency to 31 Hz (31250/1024 = 31) //pwm_freq_set(10, 1024); void pwm_freq_set(int pin, int divisor) { byte mode; if(pin == 5 || pin == 6 || pin == 9 || pin == 10) { switch(divisor) { case 1: mode = 0x01; break; case 8: mode = 0x02; break; case 64: mode = 0x03; break; case 256: mode = 0x04; break; case 1024: mode = 0x05; break; default: return; } if(pin == 5 || pin == 6) { TCCR0B = TCCR0B & 0b11111000 | mode; } else { TCCR1B = TCCR1B & 0b11111000 | mode; } } else if(pin == 3 || pin == 11) { switch(divisor) { case 1: mode = 0x01; break; case 8: mode = 0x02; break; case 32: mode = 0x03; break; case 64: mode = 0x04; break; case 128: mode = 0x05; break; case 256: mode = 0x06; break; case 1024: mode = 0x7; break; default: return; } TCCR2B = TCCR2B & 0b11111000 | mode; } } void pwm_gpio_init(void) { pinMode(XX_GPIO_PIN,OUTPUT); } void pwm_dutecycle_set(int pin,int persent) { int val=0; val=map(persent,0,100,0,255); analogWrite(pin,val); }

timer

//install mstimer2 lib #include <MsTimer2.h> #define XX_TIME_MS 1000 void xx_timerhandler(void const * param) { Serial.println("xx_timehandler"); //your code } void xx_timer_start(unsigned int ms) { Serial.println("xx_timer_start"); MsTimer2::set(ms, xx_timerhandler); MsTimer2::start(); } void xx_timer_stop(void) { Serial.println("xx_timer_stop"); MsTimer2::stop(); }

时间函数

delay(ms); delayMicroseconds(us); ms=millis(); us=micros();

i2c

todo

spi

todo

ble

todo