Diff: main.cpp

Revision:

13:64601d952fe4

Parent:

12:45c2bb8231bf

--- a/main.cpp	Sun Sep 24 06:18:49 2017 +0000
+++ b/main.cpp	Sun Sep 24 06:42:25 2017 +0000
@@ -47,6 +47,8 @@
 Si7021 tempI2C(p9, p11);    //sda=p0.9, scl=p.11, for bart boards
 //Si7021 tempI2C(p0, p1);    //sda=p0.0, scl=p0.1
 
+DigitalOut sensorPwr(p0);  //digital output on P0.00, for light sensor, bart board
+
 
 //depending on how many sensor values you have, change this and examine Flag_Update_ADV_01
 const uint8_t Max_Sensor_Num = 3;  //set to the number of advertisements (temp, humidity, lumins = 3)
@@ -506,6 +508,7 @@
             //convert battery voltage float value to string reprsentation to 2 decimal places, and save the size of string.
             total_chars = sprintf (bat_volt_char, "%.2f", bat_reading);
             
+            sensorPwr = 1; //turn on power to light sensor
             //read and convert analog voltage.  Comment out this section if note needed, saves some battery
             NRF_ADC->TASKS_STOP = 1;
             float analogreading;
@@ -522,6 +525,7 @@
             NRF_ADC->TASKS_STOP = 1;
             NRF_ADC->ENABLE = ADC_ENABLE_ENABLE_Disabled;    //disable to shutdown ADC & lower bat consumption
 
+            sensorPwr = 0; //turn off power to light sensor
             
             //read temperature of Si7021
             tempI2C.measure();