Waveshare NRF52840 - Page 36

NRF52840 Eval Kit User Manual
Vision: V1.0.1 Date: 2019.01.19 36 / 72
}
BME280 Initialization in main.c
struct bme280_dev dev;
int8_t rslt = BME280_OK;
dev.dev_id = BME280_I2C_ADDR_SEC;
dev.intf = BME280_I2C_INTF;
dev.read = user_i2c_read;
dev.write = user_i2c_write;
dev.delay_ms = user_delay_ms;
//before you init bme280, you can choose to do a selftest
rslt = bme280_crc_selftest(&dev);
if(rslt == 0)
{
NRF_LOG_INFO("BME280 self test pass\r\n");
NRF_LOG_FLUSH();
}
rslt = bme280_init(&dev);
if(rslt == 0)
{
NRF_LOG_INFO("Init Success\r\n");
NRF_LOG_FLUSH();
}
else
{
NRF_LOG_INFO("Init Fail,Please Check your address or the wire
you connected!!!\r\n");
NRF_LOG_FLUSH();
while(1);
}
/*
Using normal mode to read the data
*/
stream_sensor_data_normal_mode(&dev);
bme280_crc_selftest(): Self testing function
stream_sensor_data_normal_mode(&dev): Read data of bme280 and calculate. Use
bme280_get_sensor_data() and print_sensor_data() to read and print_sensor_data().