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Merge pull request #160 from sheinz/feature/bmp280

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BMP280 pressure sensor driver and example.
This commit is contained in:
Angus Gratton 2016-07-19 08:22:14 +10:00 • committed by GitHub
commit 22c480b583
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examples/bmp280/Makefile Normal file
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PROGRAM=BMP280_example
EXTRA_COMPONENTS = extras/i2c extras/bmp280
include ../../common.mk

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examples/bmp280/bmp280_example.c Normal file
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#include <stdio.h>
#include "espressif/esp_common.h"
#include "esp/uart.h"
#include "FreeRTOS.h"
#include "task.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;
#ifdef MODE_FORCED
static void bmp280_task_forced(void *pvParameters)
{
bmp280_params_t params;
float pressure, temperature;
bmp280_init_default_params(&params);
params.mode = BMP280_MODE_FORCED;
while (1) {
while (!bmp280_init(&params, scl_pin, sda_pin)) {
printf("BMP280 initialization failed\n");
vTaskDelay(1000 / portTICK_RATE_MS);
}
while(1) {
vTaskDelay(1000 / portTICK_RATE_MS);
if (!bmp280_force_measurement()) {
printf("Failed initiating measurement\n");
break;
}
while (bmp280_is_measuring()) {}; // wait for measurement to complete
if (!bmp280_read(&temperature, &pressure)) {
printf("Temperature/pressure reading failed\n");
break;
}
printf("Pressure: %.2f Pa, Temperature: %.2f C\n", pressure, temperature);
}
}
}
#else
static void bmp280_task_normal(void *pvParameters)
{
bmp280_params_t params;
float pressure, temperature;
bmp280_init_default_params(&params);
while (1) {
while (!bmp280_init(&params, scl_pin, sda_pin)) {
printf("BMP280 initialization failed\n");
vTaskDelay(1000 / portTICK_RATE_MS);
}
while(1) {
vTaskDelay(1000 / portTICK_RATE_MS);
if (!bmp280_read(&temperature, &pressure)) {
printf("Temperature/pressure reading failed\n");
break;
}
printf("Pressure: %.2f Pa, Temperature: %.2f C\n", pressure, temperature);
}
}
}
#endif
void user_init(void)
{
uart_set_baud(0, 115200);
// Just some information
printf("\n");
printf("SDK version : %s\n", sdk_system_get_sdk_version());
printf("GIT version : %s\n", GITSHORTREV);
#ifdef MODE_FORCED
xTaskCreate(bmp280_task_forced, (signed char *)"bmp280_task", 256, NULL, 2, NULL);
#else
xTaskCreate(bmp280_task_normal, (signed char *)"bmp280_task", 256, NULL, 2, NULL);
#endif
}