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Merge pull request #186 from ourairquality/bme280

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BME280 support.
This commit is contained in:
sheinz 2016-08-19 10:31:21 +03:00 • committed by GitHub
commit 95081a1e9f
4 changed files with 369 additions and 179 deletions
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49
examples/bmp280/bmp280_example.c
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@ -6,43 +6,55 @@
#include "FreeRTOS.h"
#include "task.h"
#include "i2c/i2c.h"
#include "bmp280/bmp280.h"
// In forced mode user initiate measurement each time.
// In normal mode measurement is done continuously with specified standby time.
// #define MODE_FORCED
const uint8_t scl_pin = 5;
const uint8_t sda_pin = 4;
const uint8_t scl_pin = 0;
const uint8_t sda_pin = 2;
#ifdef MODE_FORCED
static void bmp280_task_forced(void *pvParameters)
{
bmp280_params_t params;
float pressure, temperature;
float pressure, temperature, humidity;
bmp280_init_default_params(&params);
params.mode = BMP280_MODE_FORCED;
bmp280_t bmp280_dev;
bmp280_dev.i2c_addr = BMP280_I2C_ADDRESS_0;
while (1) {
while (!bmp280_init(&params, scl_pin, sda_pin)) {
while (!bmp280_init(&bmp280_dev, &params)) {
printf("BMP280 initialization failed\n");
vTaskDelay(1000 / portTICK_RATE_MS);
}
bool bme280p = bmp280_dev.id == BME280_CHIP_ID;
printf("BMP280: found %s\n", bme280p ? "BME280" : "BMP280");
while(1) {
vTaskDelay(1000 / portTICK_RATE_MS);
if (!bmp280_force_measurement()) {
if (!bmp280_force_measurement(&bmp280_dev)) {
printf("Failed initiating measurement\n");
break;
}
while (bmp280_is_measuring()) {}; // wait for measurement to complete
// wait for measurement to complete
while (bmp280_is_measuring(&bmp280_dev)) {};
if (!bmp280_read(&temperature, &pressure)) {
if (!bmp280_read_float(&bmp280_dev, &temperature, &pressure, &humidity)) {
printf("Temperature/pressure reading failed\n");
break;
}
printf("Pressure: %.2f Pa, Temperature: %.2f C\n", pressure, temperature);
printf("Pressure: %.2f Pa, Temperature: %.2f C", pressure, temperature);
if (bme280p)
printf(", Humidity: %.2f\n", humidity);
else
printf("\n");
}
}
}
@ -50,22 +62,33 @@ static void bmp280_task_forced(void *pvParameters)
static void bmp280_task_normal(void *pvParameters)
{
bmp280_params_t params;
float pressure, temperature;
float pressure, temperature, humidity;
bmp280_init_default_params(&params);
bmp280_t bmp280_dev;
bmp280_dev.i2c_addr = BMP280_I2C_ADDRESS_0;
while (1) {
while (!bmp280_init(&params, scl_pin, sda_pin)) {
while (!bmp280_init(&bmp280_dev, &params)) {
printf("BMP280 initialization failed\n");
vTaskDelay(1000 / portTICK_RATE_MS);
}
bool bme280p = bmp280_dev.id == BME280_CHIP_ID;
printf("BMP280: found %s\n", bme280p ? "BME280" : "BMP280");
while(1) {
vTaskDelay(1000 / portTICK_RATE_MS);
if (!bmp280_read(&temperature, &pressure)) {
if (!bmp280_read_float(&bmp280_dev, &temperature, &pressure, &humidity)) {
printf("Temperature/pressure reading failed\n");
break;
}
printf("Pressure: %.2f Pa, Temperature: %.2f C\n", pressure, temperature);
printf("Pressure: %.2f Pa, Temperature: %.2f C", pressure, temperature);
if (bme280p)
printf(", Humidity: %.2f\n", humidity);
else
printf("\n");
}
}
}
@ -80,6 +103,8 @@ void user_init(void)
printf("SDK version : %s\n", sdk_system_get_sdk_version());
printf("GIT version : %s\n", GITSHORTREV);
i2c_init(scl_pin, sda_pin);
#ifdef MODE_FORCED
xTaskCreate(bmp280_task_forced, (signed char *)"bmp280_task", 256, NULL, 2, NULL);
#else