static void send_update(size_t pos, char *buf)
{
uint32_t pressure;
uint16_t rawtemp, rawhum;
int temp, hum, temp_abs, hum_abs, pressure_abs;
uint8_t status;
tcs37727_data_t light_data;
hdc1000_read(&th_dev, &rawtemp, &rawhum);
hdc1000_convert(rawtemp, rawhum, &temp, &hum);
temp_abs = temp / 100;
hum_abs = hum / 100;
temp -= temp_abs * 100;
hum -= hum_abs * 100;
mpl3115a2_read_pressure(&p_dev, &pressure, &status);
pressure_abs = pressure / 100000;
pressure -= pressure_abs * 100000;
//mpl3115a2_read_temp(&p_dev, &temp);
tcs37727_read(&light_dev, &light_data);
pos += sprintf(&buf[pos], "{\"n\":\"s:temp\", \"u\":\"°C\", \"v\":\"%2i.%03i\"},",
temp_abs, temp);
pos += sprintf(&buf[pos], "{\"n\":\"s:hum\", \"u\":\"%%RH\", \"v\":\"%2i.%03i\"},",
hum_abs, hum);
pos += sprintf(&buf[pos], "{\"n\":\"s:pres\", \"u\":\"bar\", \"v\":\"%2i.%03i\"},",
pressure_abs, (unsigned int) pressure);
pos += sprintf(&buf[pos], "{\"n\":\"s:rgb\", \"u\":\"RGB\", \"v\":\"[%"PRIu32", %"PRIu32", %"PRIu32"]\"}]",
light_data.red, light_data.green, light_data.blue);
hdc1000_startmeasure(&th_dev);
send_coap_post((uint8_t *)buf, pos);
}
/**
* @brief Measure the illuminance with a TCS37727.
*
* @ return illuminance in lux
*/
long get_illuminance(void) {
tcs37727_data_t data;
// enable TCS37727 and start the measurment
if (tcs37727_set_rgbc_active(&tcsDev) != 0) {
puts("[sensors] ERROR: TCS37727 activation failed");
return -1;
}
// wait for the measurment to finish
xtimer_usleep(2400 + tcsDev.atime_us);
if (tcs37727_read(&tcsDev, &data) != 0) {
puts("[sensors] ERROR: TCS37727 reading data failed");
return -1;
}
printf("[sensors] INFO: TCS37727 Data R: %5"PRIu32" G: %5"PRIu32
" B: %5"PRIu32" C: %5"PRIu32"\n", data.red, data.green, data.blue,
data.clear);
printf("[sensors] INFO: TCS37727 Data CT : %5"PRIu32" Lux: %6"PRIu32
" AGAIN: %2d ATIME %d\n", data.ct, data.lux, tcsDev.again,
tcsDev.atime_us);
// disable the TCS37727
if (tcs37727_set_rgbc_standby(&tcsDev) != 0) {
puts("[sensors] ERROR: TCS37727 deactivation failed");
}
return data.lux;
}
int main(void)
{
tcs37727_t dev;
tcs37727_data_t data;
puts("TCS37727 RGBC Data; Sensor driver test application\n");
printf("Initializing TCS37727 sensor at I2C_%i... ", TEST_TCS37727_I2C);
if (tcs37727_init(&dev, TEST_TCS37727_I2C, TEST_TCS37727_ADDR,
TCS37727_ATIME_DEFAULT) == 0) {
puts("[OK]\n");
}
else {
puts("[Failed]");
return -1;
}
if (tcs37727_set_rgbc_active(&dev)) {
puts("Measurement start failed.");
return -1;
}
while (1) {
tcs37727_read(&dev, &data);
printf("R: %5"PRIu32" G: %5"PRIu32" B: %5"PRIu32" C: %5"PRIu32"\n",
data.red, data.green, data.blue, data.clear);
printf("CT : %5"PRIu32" Lux: %6"PRIu32" AGAIN: %2d ATIME %d\n",
data.ct, data.lux, dev.again, dev.atime_us);
xtimer_usleep(SLEEP);
}
return 0;
}