Diff: main.cpp

Revision:

1:57ff098da1dd

Parent:

0:1ffbfe56f438

Child:

2:e999eca5c095

--- a/main.cpp	Mon Feb 08 21:00:25 2021 +0000
+++ b/main.cpp	Mon Feb 08 22:35:35 2021 +0000
@@ -13,11 +13,14 @@
 #endif
 
 DigitalOut led(LED1);
-DigitalOut led2(LED2);
-DigitalOut led3(LED3);
+AnalogIn analog_light_sensor_read(A1);
 
 int main()
 {
+    int adc_scale = 4096;
+    int sensorValue;
+    float Rsensor;
+    
     printf("\nSTM32 ADC internal channels reading example\n");
     while(1) {
         printf("ADC Temp = %f\n", (adc_temp.read()*100));
@@ -30,12 +33,14 @@
         #endif
         led = !led;
         if ((adc_temp.read()*100) > 20) {
-            led2 = !led2;
-            led3 = !led3;
             wait(1.0);
         } else {
-//            led2 = 1;
             wait(0.25);
         }
+        sensorValue = analog_light_sensor_read.read_u16();               
+        Rsensor=(float)(adc_scale-sensorValue)*10/sensorValue;
+        printf("Light Sensor Analog Reading is 0x%X = %d   ", sensorValue, sensorValue);        
+        printf("The sensor resistance is %f  \n\n\r", Rsensor);  
+//        wait(1); // 1s  
     }
 }