Diff: main.cpp

Revision:

1:b512a405b584

Parent:

0:ee3787c8e209

Child:

2:d02255d8c36f

--- a/main.cpp	Fri Apr 21 13:26:06 2017 +0000
+++ b/main.cpp	Mon Jun 05 11:10:28 2017 +0000
@@ -7,18 +7,16 @@
 BLE             ble;                                                                    //BLE object
 
 // Pins and timers needed for lp8 communication
-DigitalIn       RDY(P0_8);                                                              //
-DigitalOut      VBB(P0_5);
-DigitalOut      VBB_EN(P0_4);                                                        //
+DigitalIn       RDY(P0_5);                                                              //
+DigitalOut      VBB_EN(P0_29, 0);                                                       //set to low at startup
 Serial          Device(P0_9, P0_11);                                                    //tx, rx
-DigitalOut      led1(P0_19, 1);                                                         //board led
 Timer           lp8Wait;                                                                //timer for sensor communication
 
 
 
 //Sensor and ble Configuration parameters
-#define     SENSOR_TIMER                        10.0                                    //lp8 polling interval (seconds)
-#define     BLE_ADV_INTERVAL                    500                                     //advertisment interval (milliseconds)
+#define     SENSOR_TIMER                        20.0                                    //lp8 polling interval (seconds)
+#define     BLE_ADV_INTERVAL                    1000                                    //advertisment interval (milliseconds)
 
 
 
@@ -28,23 +26,21 @@
 
 
 //check for sensor triggering and uppdating Gatt Server
-bool                    triggerSensor = false;                                          //check for sensor polling
+bool                    triggerSensor = false;                                          //check for sensor polling, used with interupt
 LP8_Service             *lp8ServicePtr;                                                 //pointer to lp8 service object
 
 
 
 //****************************   ble functions      *******************************
-//****************************                      *******************************
 // on Disconnect, Restart BroadCasting
 void disconnectionCallback(const Gap::DisconnectionCallbackParams_t *params)
 {
-    //reset I/O pin, necessary?
-//    VBB_EN.write ( 1 );
-    
+    //turn of sensor at ble disconnect
+    VBB_EN.write( 0 );
     //restart broadcast
     ble.gap().startAdvertising();
 }
-//timer function callback function
+//timer function callback
 void triggerSensorPollingInterupt()
 {
     triggerSensor = true;
@@ -55,7 +51,7 @@
 //main 
 int main(void)
 {
-    led1 = 1;      //turn off led                                                                
+    wait(1); 
     
     Ticker lp8Timer;                                                                    //timer object for sensor polling interupts
     lp8Timer.attach(&triggerSensorPollingInterupt, SENSOR_TIMER);                       //trigger sensor reading every X.Y sec
@@ -64,12 +60,17 @@
     ble.gap().onDisconnection(disconnectionCallback);                                   //do callback if disconnection occurs
 
 
-    int                     co2Value = 400;                                             //initial CO2 value
-    bool                    initCheck = true;                                           //check for init sensor state or lost state
-    bool                    successCheck = false;
+    int                     co2Value = 400;                                             //initial CO2 value to display
+    bool                    initCheck = true;                                           //check for init sensor state (or lost state)
+    bool                    successCheck = false;                                       //check for sensor communication
+    //calibration control bytes for the lp 8
+    uint8_t                 subsequentMeasurement       = 0x20;                         //lp8 calculation control byte for subs. measurements
+    uint8_t                 noResetABC                  = 0x70;                         //abc calibration byte with no reset on filters
+    uint8_t                 resetABC                    = 0x72;                         //abc calibration AND resets filters
+    uint8_t                 backgroundCalibration       = 0x52;                         //background calibration using unfilterd data + resets filters
     
-//setup LP8 peripheral communication 
-    LP8               lp8(Device, VBB, VBB_EN, RDY, lp8Wait);
+//setup LP8 object 
+    LP8               lp8(Device, VBB_EN, RDY, lp8Wait);                                //constructor needs 4 arguments
      
      
 //setup for GattService
@@ -78,45 +79,42 @@
     lp8ServicePtr     = &lp8Service;                                                    //set pointer to "real" lp8 service object
 
 
-/* setup advertising parameters */
+/* setup ble advertising parameters */
     ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED | GapAdvertisingData::LE_GENERAL_DISCOVERABLE);            //general bluetooth information(only support for ble
     ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LIST_16BIT_SERVICE_IDS, (uint8_t *)uuid16_list, sizeof(uuid16_list)); //service list
     ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LOCAL_NAME, (uint8_t *)DEVICE_NAME, sizeof(DEVICE_NAME));
     ble.gap().setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED);
-    ble.gap().setAdvertisingInterval(BLE_ADV_INTERVAL);                 /* advertising interval in ms. */
-    ble.gap().startAdvertising();                                       //start broadcast
+    ble.gap().setAdvertisingInterval(BLE_ADV_INTERVAL);                                 /* advertising interval in ms. */
+    ble.gap().startAdvertising();                                                       //start broadcast
     
-        /* SpinWait for initialization to complete. This is necessary because the
-     * BLE object is used in the main loop below. */
+        /* SpinWait for initialization to complete. */
     while (ble.hasInitialized()  == false) { /* spin loop */ }
 
 
 
-//start the loop    
+//start the main loop    
     while ( true ) 
     {
-        if(triggerSensor && ble.gap().getState().connected )                            //trigger when timer interupts ticks and there is an established connection
+        if(triggerSensor && ble.gap().getState().connected )                            //trigger when timer interupts and there is an established ble connection
         {
             if ( initCheck ) {
-                successCheck = lp8.lp8Init();
+                successCheck = lp8.lp8Init();                                           //initialize talking with the lp8 (first call on startup)
                 
-//                if ( successCheck ) {
+                if ( successCheck ) {
                     initCheck = false;
-//                    led1 = 0;       //turn on led 
-//                }
+                }
             }
             else {
-                lp8.lp8Talk();
-                led1 = 0;   //on when talking
+                lp8.lp8Talk( subsequentMeasurement );                                   //Communication with the lp8, sends calculation control: 0x20 == subs. talks
             }
+            //reset polling check
+            triggerSensor = false;
             
-            //reset sensor status
-            triggerSensor = false;
-            //update gattServer with new CO2 value
+            //update the gattServer with new CO2 value
             lp8ServicePtr->updateCo2Value( lp8.getValue() );
         }
         
-        else { ble.waitForEvent(); }                //ble save energy
+        else { ble.waitForEvent(); }                                                    //ble save energy
     }
     
 };