Brendon Ky / Mbed 2 deprecated cs_335_speedometer

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Dependencies:   mbed mbed-rtos

Diff: main.cpp

Revision:
9:b7e8d0372f53
Parent:
8:9f59ef177620
Child:
10:8d86e59fb408
--- a/main.cpp	Mon Nov 30 23:42:26 2020 +0000
+++ b/main.cpp	Tue Dec 01 00:20:30 2020 +0000
@@ -1,19 +1,41 @@
 #include "mbed.h"
-#include "input_driver.h"
-#include "output_driver.h"
+
 #include <time.h>
+# include <stdbool.h>
+
+# define LIGHT_SENSOR_PIN p15
+
+
+    
+AnalogIn lightSensorVoltage(LIGHT_SENSOR_PIN);
+Serial pc(USBTX, USBRX);
 
 DigitalOut myled(LED1);
 
+float voltage0 = 0;
+float voltage1 = 0;
+
+bool flashDetected() {
+    bool flashDetected = (voltage1 < voltage0) && (voltage0 > lightSensorVoltage.read());
+        
+    // update stored values
+    voltage1 = voltage0;
+    voltage0 = lightSensorVoltage;
+    
+    return flashDetected;
+}
+
+void sendFloat(float value) {
+    for (int i=0; i<4; i++)
+        pc.putc(*(((char*) &value)+i));
+}
+
 int main() {
     //int flashTime = 0;
     printf("starting\n");
     while(1) {
-        printf("%f", getSensorStrength());
-        sendFloat((float)getSensorStrength());
-        if(getFlashDetected()) {
-            printf("flash as %f\n", clock());
-        }
+        sendFloat(lightSensorVoltage.read());
         wait(0.1);
     }
 }
+