zephyr pms7003 driver 사용하기

pms7003 공기질센서 드라이버는 아래 경로에서 찾을 수 있습니다.

zephyr/drivers/sensor/pms7003

 

동작환경

zephyr OS : v4.0.99

nRF Connect SDK v3.0.1

 

동작로그

 

개발환경 

nRF54L15-DK Board + pms7003 sensor

 

prj.conf

# General kernel settings

CONFIG_PRINTK=y

CONFIG_MAIN_STACK_SIZE=2048

# Enable the sensor subsystem and the PMS7003 driver

CONFIG_SENSOR=y

CONFIG_PMS7003=y

# PMS7003 uses UART

CONFIG_SERIAL=y

# Enable interrupt-driven UART communication

CONFIG_UART_INTERRUPT_DRIVEN=y

# Enable floating point support for printf to display sensor values

CONFIG_CBPRINTF_FP_SUPPORT=y

# Enable Sensor Debug Log

CONFIG_LOG=y

CONFIG_SENSOR_LOG_LEVEL_DBG=y

 

app.overlay

/{

    aliases {

        pms0 = &pms7003;

    };

};

&uart21 {

    compatible = "nordic,nrf-uarte";

    current-speed = <9600>;

    status = "okay";

    pinctrl-0 = <&uart21_default>;

    pinctrl-1 = <&uart21_sleep>;

    pinctrl-names = "default", "sleep";

    pms7003:pms7003 {

        compatible = "plantower,pms7003";

        label = "PMS7003";

        status = "okay";

    };

   

};

&pinctrl {

    uart21_default: uart21_default {

        group1 {

            psels = <NRF_PSEL(UART_TX, 1, 11)>,

                    <NRF_PSEL(UART_RX, 1, 12)>;

        };

    };

    uart21_sleep: uart21_sleep {

        group1 {

            psels = <NRF_PSEL(UART_TX, 1, 11)>,

                    <NRF_PSEL(UART_RX, 1, 12)>;

            low-power-enable;

        };

    };

};

 

main.c

#include <zephyr/kernel.h>

#include <zephyr/device.h>

#include <zephyr/drivers/sensor.h>

#include <zephyr/sys/printk.h>

#include <stdio.h>

static const struct device *pms_dev = DEVICE_DT_GET(DT_ALIAS(pms0));

/* sensor_value를 double로 변환하여 출력하는 헬퍼 함수 */

static void print_sensor_value(const char *name, const struct sensor_value *val)

{

    printk("%s: %.2f ug/m3\n", name, sensor_value_to_double(val));

}

int main(void)

{

    if (!device_is_ready(pms_dev)) {

        printk("PMS7003 sensor device not ready!\n");

        return 1;

    }

    printk("PMS7003 Particulate Matter Sensor Sample (using alias)\n");

    while (1) {

        struct sensor_value pm1p0, pm2p5, pm10p0;

        int ret;

        /* 센서로부터 새로운 데이터를 가져옵니다. */

        ret = sensor_sample_fetch(pms_dev);

        if (ret) {

            printk("Failed to fetch sample from PMS7003: %d\n", ret);

            k_sleep(K_MSEC(200));

            continue;

        }

        /* 각 채널(PM1.0, PM2.5, PM10)의 값을 읽어옵니다. */

        sensor_channel_get(pms_dev, SENSOR_CHAN_PM_1_0, &pm1p0);

        sensor_channel_get(pms_dev, SENSOR_CHAN_PM_2_5, &pm2p5);

        sensor_channel_get(pms_dev, SENSOR_CHAN_PM_10, &pm10p0);

        /* 읽어온 값을 출력합니다. */

        print_sensor_value("PM  1.0", &pm1p0);

        print_sensor_value("PM  2.5", &pm2p5);

        print_sensor_value("PM 10.0", &pm10p0);

        printk("----------------------------------------\n");

        k_sleep(K_MSEC(100));

    }

}

 

build & flash하면 아래와 같이 동작하는 것을 확인할 수 있습니다.

 

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