Diff: main.cpp

Revision:

2:4cac3109599d

Parent:

0:285a4bb14ae3

--- a/main.cpp	Sun Apr 03 13:45:44 2016 +0000
+++ b/main.cpp	Sun Apr 17 17:55:13 2016 +0000
@@ -1,22 +1,81 @@
 #include "mbed.h"
+#include "ble/BLE.h"
 #include "functions.h"
 #include "lsm6ds0.h"
+#include "ButtonService.h"
 
 static Serial pc(SERIAL_TX, SERIAL_RX);
 
+
 InterruptIn LSM6DS0_int(D4);
 DigitalOut led(LED1);
 LSM6DS0 *gyro_accel;
 xl_output data_FIFO[FIFO_length_by_five];
 int offset;
 
-char data_read[192];
+BLE         ble;
+const static char     DEVICE_NAME[] = "StepCounter";
+static const uint16_t uuid16_list[] = {StepCounterService::STEPCOUNTER_SERVICE_UUID};
+
+
+StepCounterService *StepCounterServicePtr;
+
+
+
+
+
+
+
+
+
+static volatile bool  triggerSensorPolling = false;
+static uint8_t StepCounter = 0;
+//   Restart advertising when phone app disconnects
+void disconnectionCallback(const Gap::DisconnectionCallbackParams_t *params)
+{
+    ble.gap().startAdvertising();
+    
+}
 
 void get_data() {
     LSM6DS0_int.disable_irq(); //Disable IRQ interrupt
     led = !led; //Blink led
-    gyro_accel->storeFIFO(&offset, data_FIFO); //Store the data from FIFO to data_FIFO variable     
-    LSM6DS0_int.enable_irq(); //Re-enable IRQ interrupt 
+    gyro_accel->storeFIFO(&offset, data_FIFO); //Store the data from FIFO to data_FIFO variable
+    LSM6DS0_int.enable_irq(); //Re-enable IRQ interrupt
+}
+
+
+void periodicCallback(void)
+{
+    
+    /* Note that the periodicCallback() executes in interrupt context, so it is safer to do
+     * heavy-weight sensor polling from the main thread. */
+    triggerSensorPolling = true;
+}
+
+//  Initialization callback
+void bleInitComplete(BLE::InitializationCompleteCallbackContext *params)
+{
+    BLE &ble          = params->ble;
+    ble_error_t error = params->error;
+    
+    if (error != BLE_ERROR_NONE) {
+        return;
+    }
+    ble.gap().onDisconnection(disconnectionCallback);
+    
+    StepCounterService StepCounterService(ble, false);    /* initial value for button pressed */
+    StepCounterServicePtr = &StepCounterService;
+    
+    /* Setup advertising */
+    ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED | GapAdvertisingData::LE_GENERAL_DISCOVERABLE); // BLE only, no classic BT
+    ble.gap().setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED); // advertising type
+    ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LOCAL_NAME, (uint8_t *)DEVICE_NAME, sizeof(DEVICE_NAME)); // add name
+    ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LIST_16BIT_SERVICE_IDS, (uint8_t *)uuid16_list, sizeof(uuid16_list)); // UUID's broadcast in advertising packet
+    ble.gap().setAdvertisingInterval(100); // 100ms.
+    
+    /* Start advertising */
+    ble.gap().startAdvertising();
 }
 
 int main()
@@ -25,19 +84,39 @@
     LSM6DS0_ACC_HR_t high_res;
     LSM6DS0_FIFO_mode_t work_mode;
     
-    offset = 0; //Offset in the data_FIFO vector. It is useful to store the FIFO value in the data_FIFO vector without overwritting (after 5 FIFO value the data_FIFO vector has been overwritten) 
+    offset = 0; //Offset in the data_FIFO vector. It is useful to store the FIFO value in the data_FIFO vector without overwritting (after 5 FIFO value the data_FIFO vector has been overwritten)
     odr = LSM6DS0_ACC_ODR_50Hz ;
     high_res = LSM6DS0_ACC_HR_Disabled;
     work_mode = LSM6DS0_FIFO_mode_CONTINUOUS;
     
-    LSM6DS0_int.rise(&get_data); //LSM6DS0's interrupt initializzation   
+    LSM6DS0_int.rise(&get_data); //LSM6DS0's interrupt initializzation
     gyro_accel->LSM6DS0_reset(); //LSM6DS0 reset
     gyro_accel->Init(odr, high_res, work_mode); //LSM6DS0 initializzation
     
-    while(1)
+    Ticker ticker;
+    ticker.attach(periodicCallback, 1);
+    
+    ble.init(bleInitComplete);
+    
+    /* SpinWait for initialization to complete. This is necessary because the
+     * BLE object is used in the main loop below. */
+    while (ble.hasInitialized()  == false) { /* spin loop */ }
+    
+    /* Infinite loop waiting for BLE interrupt events */
+    while (1)
     {
-        wait(5);
-        pc.printf("\n\r#################################\n\r");
-        gyro_accel->computeValue(data_FIFO);
+        // check for trigger from periodicCallback()
+        if (triggerSensorPolling && ble.getGapState().connected)
+        {
+            triggerSensorPolling = false;
+            
+            // Do blocking calls or whatever is necessary for sensor polling.
+            // In our case, we simply update the HRM measurement.
+            StepCounter++;
+            StepCounterServicePtr->updateStepCounterState(StepCounter);
+        } else {
+            ble.waitForEvent(); // low power wait for event
+        }
     }
+    
 }
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