Diff: main.cpp

Revision:

30:c8efec21544f

Parent:

27:2afb9baf718f

Child:

31:1aaf6b8b066e

--- a/main.cpp	Fri Nov 06 12:47:24 2015 +0000
+++ b/main.cpp	Mon Nov 09 16:53:24 2015 +0000
@@ -5,10 +5,12 @@
 #include <stdio.h>
 #include <assert.h>
 
-/* This test application performs a range measurement and an als measurement. 
-   Display select slider allow to switch the measurement type; previuos 
-   measurement is stopped and a new measurement is started.
-   User button allows to stop current measurement and the entire program.
+/* This VL6180X Expansion board test application performs a range measurement and an als measurement in interrupt mode
+   on the onboard embedded top sensor. 
+   The board red slider select on the flight the measurement type as ALS or RANGE; the measured data is diplayed on the 
+   on bord 4digits display.
+
+   User Blue button allows to stop current measurement and the entire program releasing all the resources.
    Reset button is used to restart the program. */
 
 /* Polling operating modes don`t require callback function that handles IRQ 
@@ -34,21 +36,22 @@
 OperatingMode operating_mode, prev_operating_mode;
 	
 /* flags that handle interrupt request */
-bool flag_sensor_top=false, flag_stop_measure=false;	
+bool int_sensor_top=false, int_stop_measure=false;	
 
-/* callback function of the sensor_top */
+/* ISR callback function of the sensor_top */
 void SensorTopIRQ(void)
 {
-   flag_sensor_top=true;
+   int_sensor_top=true;
    board->sensor_top->DisableInterruptMeasureDetectionIRQ();
 }	
 
-/* callback function of the user button to stop program */
+/* ISR callback function of the user blue button to stop program */
 void StopMeasureIRQ(void)
 {
-   flag_stop_measure=true;
+   int_stop_measure=true;
 }
 
+/* On board 4 digit local display refresh */
 void DisplayRefresh(OperatingMode op_mode)
 {   
    char str[5];
@@ -58,12 +61,10 @@
       if(data_sensor_top.range_mm!=0xFFFFFFFF)
       {
          sprintf(str,"%d",data_sensor_top.range_mm);
-         board->display->DisplayString(str, strlen(str));
       }
       else
       {
          sprintf(str,"%s","----");
-         board->display->DisplayString(str, strlen(str));
       }
    }
    else if(op_mode==als_continuous_interrupt)
@@ -71,25 +72,27 @@
       if(data_sensor_top.lux!=0xFFFFFFFF)
       {
          sprintf(str,"%d",data_sensor_top.lux);
-         board->display->DisplayString(str, strlen(str));
       }
       else
       {
          sprintf(str,"%s","----");
-         board->display->DisplayString(str, strlen(str));
       }
-   }    
+   }
+   board->display->DisplayString(str, strlen(str));       
 }
 
-OperatingMode CheckSlider(int measure)
+/* On board red slider position check */
+OperatingMode CheckSlider(STMPE1600DigiIn measure_type)
 {
+   int measure=measure_type;   
    if(measure==RANGE)
       return range_continuous_interrupt;
    else if(measure==ALS)
       return als_continuous_interrupt;
 }
 
-void StartPrintMessage(OperatingMode op_mode)
+/* Print on USB Serial the started OperatingMode */
+void PrintStartMessage(OperatingMode op_mode)
 {
    if(op_mode==range_continuous_interrupt)
       printf("\nStarted range continuous interrupt measure\n\r");
@@ -97,7 +100,8 @@
       printf("\nStarted als continuous interrupt measure\n\r");
 }
 
-void StopPrintMessage(OperatingMode op_mode)
+/* Print on USB Serial the stopped OperatingMode */
+void PrintStopMessage(OperatingMode op_mode)
 {
    if(op_mode==range_continuous_interrupt)
       printf("Stopped range continuous interrupt measure\n\r");
@@ -105,16 +109,20 @@
       printf("Stopped als continuous interrupt measure\n\r");
 }
 
+/* Print on board 4 Digit display the app exiting BYE message */
+#define DELAY 2000
 void Bye()
 {
-   int i;
+   Timer timer;
    char str[5];
    
-   for(i=0;i<200;i++)
+   timer.start();
+   for(int i=0; i<DELAY; i=timer.read_ms())
    {
       sprintf(str,"%s","BYE");
       board->display->DisplayString(str, strlen(str));
    }
+   timer.stop();
 }
 
 int main()
@@ -124,7 +132,7 @@
    /* user button used to stop measurements in interrupt mode */
    InterruptIn stop_button(USER_BUTTON);
    STMPE1600DigiIn measure_type(device_i2c, GPIO_11);
-   int status, measure;
+   int status;
  
    //device_i2c.frequency(400000); //change i2c frequncy from 100kHz to 400kHz
    pc.baud(115200); //change the printf baudrate
@@ -134,41 +142,39 @@
       printf("Failed to init board!\n\r");   
    
    stop_button.rise(&StopMeasureIRQ);
-   measure=measure_type;
-   operating_mode=CheckSlider(measure);
+   operating_mode=CheckSlider(measure_type);   
    status=board->sensor_top->StartMeasurement(operating_mode, SensorTopIRQ, NULL, NULL);
    if(!status)
    {
       prev_operating_mode=operating_mode;
-      StartPrintMessage(operating_mode);
+      PrintStartMessage(operating_mode);
       while(1)
       {
-         if(flag_sensor_top)
+         if(int_sensor_top)
          {
-            flag_sensor_top=false;
+            int_sensor_top=false;
             status=board->sensor_top->HandleIRQ(operating_mode, &data_sensor_top);
             DisplayRefresh(operating_mode);
          }
-         if(flag_stop_measure)
+         if(int_stop_measure)
          {
             status=board->sensor_top->StopMeasurement(prev_operating_mode);
             if(!status)
-               StopPrintMessage(prev_operating_mode);
+               PrintStopMessage(prev_operating_mode);
             printf("\nProgram stopped!\n\n\r");
             break;
          }
-         measure=measure_type;
-         operating_mode=CheckSlider(measure);
+         operating_mode=CheckSlider(measure_type);
          if(operating_mode!=prev_operating_mode)
          {
             DisplayRefresh(prev_operating_mode);
             status=board->sensor_top->StopMeasurement(prev_operating_mode);
             if(!status)
-               StopPrintMessage(prev_operating_mode);
+               PrintStopMessage(prev_operating_mode);
             prev_operating_mode=operating_mode;
             status=board->sensor_top->StartMeasurement(operating_mode, SensorTopIRQ, NULL, NULL);
             if(!status)
-               StartPrintMessage(operating_mode);
+               PrintStartMessage(operating_mode);
          }
          else
             DisplayRefresh(operating_mode);