Diff: main.cpp

Revision:

1:95286e4370e7

Parent:

0:6c17d1a79f75

diff -r 6c17d1a79f75 -r 95286e4370e7 main.cpp
--- a/main.cpp	Thu Nov 05 09:40:10 2015 +0000
+++ b/main.cpp	Thu Dec 15 10:10:30 2016 +0000
@@ -1,48 +1,185 @@
+/* This program demonstrates how to use the VCNL4010 for detecting an open closet door.
+ * Open a serial console to the board to see extra info.
+ */
+ 
 #include "mbed.h"
 #include "VCNL4010.h"
 
+#define SER_BUFFER_SIZE 32
+
+/* The 4 onboard LEDs */
 DigitalOut LED_0 (PB_6);
 DigitalOut LED_1 (PA_7);
 DigitalOut LED_2 (PA_6);
 DigitalOut LED_3 (PA_5);
- 
-//Virtual serial port over USB
+
+/* The 2 user buttons */
+InterruptIn SW1(PA_8);
+InterruptIn SW2(PB_10);
+
+/* Proximity and ambient light sensor*/
+VCNL40x0 VCNL4010(PB_9, PB_8, VCNL40x0_ADDRESS);      // SDA, SCL pin and I2C address
+
+/* Function prototypes */
+void sw1interrupt();
+void sw2interrupt();
+void sertmout();
+bool modem_command_check_ok(char * command);
+void modem_setup();
+
+bool ser_timeout = false; 
+
+/* Serial port over USB */
 Serial pc(USBTX, USBRX);
+
+/* Serial connection to sigfox modem */
 Serial modem(PA_9, PA_10);
 
-// configure VCNL4010
-VCNL40x0 VCNL40x0_Device (PB_9, PB_8, VCNL40x0_ADDRESS);      // Define SDA, SCL pin and I2C address
+
+bool indoor = false;
+int indoorLight; 
 
 
 int main() {
     
+    unsigned char ID=0;
+    unsigned int  AmbiValue=0;
+    
+    /* Setup TD120x */
+    wait(3);
+    modem_setup();
+    
+    /* Turn off all LED */
     LED_0 = 1;
     LED_1 = 1;
     LED_2 = 1;
     LED_3 = 1;
+    
+    /* Setup button interrupts */    
+    SW1.fall(&sw1interrupt);
+    SW2.fall(&sw2interrupt);    
 
-    unsigned char ID=0;
-    unsigned int  AmbiValue=0;
+    /* Read VCNL40x0 product ID revision register */
+    VCNL4010.ReadID (&ID);
+    pc.printf("\n\nProduct ID Revision Register: %d", ID);
+
+    wait_ms(3000);                                      //Wait 3s (only for display)
     
-       // print information on screen
-    pc.printf("\n\n VCNL4010 Proximity/Ambient Light Sensor");
-    pc.printf("\n Read Ambillight on demand in endless loop");
-
-    VCNL40x0_Device.ReadID (&ID);                           // Read VCNL40x0 product ID revision register
-    pc.printf("\n\n Product ID Revision Register: %d", ID);
-
-    wait_ms(3000);                                          // wait 3s (only for display)
+    /* Calibrate the system by measuring the indoor light */
+    while(indoor != true){
+        LED_3 = 0;
+        wait_ms(500);  
+        LED_3 = 1;
+        wait_ms(500);
+    }
+    VCNL4010.ReadAmbiOnDemand (&AmbiValue);             //Read ambi value on demand
+    indoorLight = AmbiValue;
+    pc.printf("\rIndoor light value is: %5.0i\n", indoorLight);
     
     while(1) { 
-        VCNL40x0_Device.ReadAmbiOnDemand (&AmbiValue);      // read ambi value on demand
-        pc.printf("Ambient light: %5.0i cts \tIlluminance: %7.2f lx\r", AmbiValue, AmbiValue/4.0);
-        if(AmbiValue < 5000) LED_3 = 0;
-        else LED_3 = 1;
-        if(AmbiValue < 4000) LED_2 = 0;
-        else LED_2 = 1;
-        if(AmbiValue < 3000) LED_1 = 0;
-        else LED_1 = 1;
-        if(AmbiValue < 2000) LED_0 = 0;
-        else LED_0 = 1;
+        VCNL4010.ReadAmbiOnDemand (&AmbiValue);         //Read ambi value on demand
+        
+        if(AmbiValue > (indoorLight+50)){
+            LED_0 = 0;                                  //Turn on LED_0 to indicate open closet and Sigfox transmission
+            pc.printf("\rCloset door has been opened!\n");
+            char command[SER_BUFFER_SIZE];
+            sprintf(command, "AT$SF=05%04x,2,0\n", (int) AmbiValue );
+            pc.printf("Sending ambient value %5.0i over Sigfox using modem command: %s\n", AmbiValue , command);
+            modem_command_check_ok(command);
+            LED_0 = 1;                                  //Turn off LED_0
+            wait_ms(5000);                              //Wait 5 seconds before checking again
+        } 
+    }
+}
+
+void modem_setup()
+{
+    /* Reset to factory defaults */
+    if(modem_command_check_ok("AT&F")) 
+    {
+        pc.printf("Factory reset succesfull\r\n");
+    }
+    else 
+    {
+        pc.printf("Factory reset TD120x failed\r\n");
+    }
+    /* Disable local echo */
+    modem.printf("ATE0\n");
+    if(modem_command_check_ok("ATE0")) 
+    {
+        pc.printf("Local echo disabled\r\n");
     }
-}
\ No newline at end of file
+    /* Write to mem */
+    if(modem_command_check_ok("AT&W")) 
+    {
+        pc.printf("Settings saved!\r\n");
+    }    
+}
+
+bool modem_command_check_ok(char * command)
+{
+    /* First clear serial data buffers */
+    while(modem.readable()) modem.getc();
+    /* Timeout for response of the modem */
+    Timeout tmout;
+    ser_timeout = false;
+    /* Buffer for incoming data */
+    char responsebuffer[6];
+    /* Flag to set when we get 'OK' response */
+    bool ok = false;
+    bool error = false;
+    /* Print command to TD120x */
+    modem.printf(command);
+    /* Newline to activate command */
+    modem.printf("\n");
+    /* Wait untill serial feedback, min 7 seconds before timeout */
+    tmout.attach(&sertmout, 7.0);
+    while(!modem.readable()&& ser_timeout == false);
+    while(!ok && !ser_timeout && !error) 
+    {
+        if(modem.readable()) 
+        {
+            for(int i = 0; i < 5; i++)
+            {
+                responsebuffer[i] = responsebuffer[i+1];
+            }
+            responsebuffer[5] = modem.getc();
+            if(responsebuffer[0] == '\r' && responsebuffer[1] == '\n' && responsebuffer[2] == 'O' && responsebuffer[3] == 'K' && responsebuffer[4] == '\r' && responsebuffer[5] == '\n' ) 
+            {
+                ok = true;
+            }
+            else if(responsebuffer[0] == '\r' && responsebuffer[1] == '\n' && responsebuffer[2] == 'E' && responsebuffer[3] == 'R' && responsebuffer[4] == 'R' && responsebuffer[5] == 'O' ) 
+            {
+                error = true;
+            }
+        }
+    }
+    tmout.detach();
+    return ok;
+}
+
+/* Button 1 ISR */
+void sw1interrupt()
+{
+    pc.printf("\n\rButton 1 pressed\n\r");
+    indoor =  true;
+    pc.printf("\n\rIndoor light measured\n\r");   
+}
+
+/* Button 2 ISR */
+void sw2interrupt()
+{
+    pc.printf("\n\rButton 2 pressed\n\r");
+    indoor =  true;
+    pc.printf("\n\rIndoor light measured\n\r");
+    
+}
+
+/* ISR for serial timeout */
+void sertmout()
+{
+    ser_timeout = true;
+}
+
+
+