update ds18b20.c to snprintf

Guo Wenxue

2022-09-22 732d1963ed83abf4e5f1b06ec451a6943421d716

 mqttd/hal/hal.c

@@ -16,9 +16,12 @@
                              /* LED_R  LED_G   LED_B */
static int led_pin[LED_MAX] = { 0,0,0 };
static int relay_pin = 0;
static int beep_pin = 0;
static int infrared_pin = 0;

void init_relay(int pin);
void init_led(int redpin, int greenpin, int bluepin);
void init_beep(int pin);

int hal_init(hwconf_t *hwconf)
{
@@ -31,17 +34,29 @@
    wiringPiSetup();

    if( hwconf->leds )
        init_led(hwconf->redled, hwconf->greenled, hwconf->blueled); 
        init_led(hwconf->red_pin, hwconf->green_pin, hwconf->blue_pin); 

    if(hwconf->relay)
        init_relay(hwconf->relay);
    if( hwconf->relay_pin )
        init_relay(hwconf->relay_pin);

    if( hwconf->beep_pin )
        init_beep(hwconf->beep_pin);

    if( hwconf->infrared_pin )
        init_infrared(hwconf->infrared_pin);

    if( hwconf->sht2x && sht2x_init() < 0 )
    {
        log_err("Initialise SHT20 failure\n");
        log_err("Initialise SHT20 T&H sensor failure\n");
        return -1;
    } 
    
    if( hwconf->lux && tsl2561_init() < 0 )
    {
        log_err("Initialise TSL2561 Lux sensor failure\n");
        return -1;
    } 
 
    return 0;
}

@@ -86,6 +101,36 @@
    pinMode(relay_pin, OUTPUT);
}

void init_beep(int pin)
{
    beep_pin = pin;

    /* TBD */
    //pinMode(relay_pin, OUTPUT);
}

void turn_beep(int times)
{
    /* TBD */
}

/* wiringPi IRQ handler use a thread and can not pass argument, so we don't use interrupt */
void init_infrared(int pin)
{
    infrared_pin = pin;
    pinMode(pin, INPUT);
}

/*  jitter_time: cancel jitter interval time 
 * Return value: 1(HIGH): Sombody detected  0(LOW): Nobody detected */
int infrared_detect(int jitter_time)
{
    if( digitalRead(infrared_pin) )
    {
        msleep(jitter_time);
    }
    return digitalRead(infrared_pin);
}

void turn_relay(int cmd)
{