Diff: main.cpp

Revision:

6:89b81d75ba02

Parent:

5:fe4888cc60cc

--- a/main.cpp	Mon Dec 21 00:25:08 2015 +0000
+++ b/main.cpp	Sat Apr 29 13:57:54 2017 +0000
@@ -1,134 +1,85 @@
 #define I2C_SDA p3
 #define I2C_SCL p4
+#define BAT_SENSE p1
 
 #include "mbed.h"
 #include "BLE.h"
-#include "battery.h"
-#include "WeatherService.h"
+#include "LampService.h"
 #include "BatteryService.h"
-#include "BMP180.h"
-#include "SHT21_ncleee.h"
-
-
-float temperature1;
-float temperature2;
-float pressure;
-float humidity;
 
 BLE ble;
 
-DigitalOut okLED(LED1);
-DigitalOut errLED(LED2);
-DigitalOut instrumentsPower(p30);
-
-BMP180 bmp180;
-SHT21 sht21(&i2c);
+PwmOut light(LED1);
+AnalogIn battery(BAT_SENSE);
 
 
-const static char DEVICE_NAME[] = "Weather Station";
+const static char DEVICE_NAME[] = "Lemp";
 
 static const uint16_t serviceList[] = {
     GattService::UUID_ENVIRONMENTAL_SERVICE, 
     GattService::UUID_BATTERY_SERVICE
 };
 
-static volatile bool triggerSensorPolling = false;
-
 void disconnectionCallback(const Gap::DisconnectionCallbackParams_t *params)
 {
     /* Restart Advertising on disconnection*/
     ble.gap().startAdvertising();
 }
 
-void blink(void)
-{
-//    statusLED = !statusLED;
-    triggerSensorPolling = true;
-}
-
-void updateFromBMP180() {
-    uint8_t c = bmp180.readByte(BMP180_ADDRESS, BMP180_WHO_AM_I);   
-    
-    printf("BMP-180 is 0x%x\n\r", c);
-    printf("BMP-180 should be 0x55\n");
-    
-    if(c == 0x55) {
-        printf("BMP-180 online\n");
-       
-        printf("Calibrating BMP-180...");
-        bmp180.BMP180Calibration();
-        printf("done\n");
-    }
-    else 
-    {
-        printf("BMP-180 unreachable\n");
-        return;
-    }    
-    
-    temperature1 = (float)bmp180.BMP180GetTemperature()/10.0f;
-    pressure = (float)bmp180.BMP180GetPressure();
-}
-
-void updateFromSHT21() {
-    temperature2 = sht21.readTemp();
-    humidity = sht21.readHumidity();
-}
 
 int main(void)
 {
     printf("Start\n");
     
-    okLED = 1;
-    errLED = 1;
-
-    Ticker ticker;
-    ticker.attach(blink, 5);
-
+    light = 1;
+    
     ble.init();
     ble.gap().onDisconnection(disconnectionCallback);
 
     /* Setup weather service. */
-    WeatherService weatherService(ble);
+    LampService lampService(ble);
     BatteryService batteryService(ble, 0);
-    Battery battery(BATTERY_PIN);
-
++
     /* setup advertising */
     ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED | GapAdvertisingData::LE_GENERAL_DISCOVERABLE);
+    //TODo add lamp service to the list
     ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LIST_16BIT_SERVICE_IDS, (uint8_t *)serviceList, sizeof(serviceList));
-    ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::UNKNOWN);
     ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LOCAL_NAME, (uint8_t *)DEVICE_NAME, sizeof(DEVICE_NAME));
     ble.gap().setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED);
-    ble.gap().setAdvertisingInterval(1000); /* 1000ms */
+    ble.gap().setAdvertisingInterval(500); /* 1000ms */
     ble.gap().startAdvertising();
 
+//    light.period(0.0005f);
+//    light.write(0.98f);   
+         
     while (true) {
-        if (triggerSensorPolling && ble.getGapState().connected) {
-            okLED = 1;
-            triggerSensorPolling = false;
+        if (ble.getGapState().connected) {
+            uint8_t buffer[1];
+            uint16_t lenght=sizeof(uint8_t);
 
-            instrumentsPower = 1;
-            wait(1);
-            updateFromBMP180();
-            updateFromSHT21();
-            instrumentsPower = 0;
+            ble.gattServer().read(lampService.lightLevelCharacteristic.getValueHandle(), buffer, &lenght);
             
-            float temperature = (temperature1 + temperature2) / 2;
+            int lightLevel = (int)buffer[0];
             
-            printf("Temp1: %.1f ºC \n", temperature1);
-            printf("Temp2: %.1f ºC \n", temperature2);
-            printf("Temp Avg.: %.1f ºC \n", temperature);
-            printf("Pressure: %.3f Pa \n", pressure);
-            printf("Humidity: %.1f%% \n", humidity);
-            printf("---\n");
-
+            if (lightLevel > 0) {
+                light = 0;
+            }
+            else {
+                light = 1;
+            }
             
-            weatherService.updateTemperature(temperature);
-            weatherService.updatePressure(pressure);
-            weatherService.updateHumidity(humidity);
-                        
+            // Voltage divider ratio on TinyBLE's battery sense is 18% for some reason (R1 = 10M, R2 = 2.2M)
+            // So, on 3.3V the ADC will indicate only 18% capacity. We remap so that 18% is 100%
+            // PS: battery = 0->1
+            float batteryLvl = ((battery.read() * 100.0f) * 100.0f) / 18.0f;
             
-            batteryService.updateBatteryLevel(battery.read());
-        } else {
+            if (batteryLvl > 100) {
+                batteryLvl = 100.0f;
+            }
+                                    
+            batteryService.updateBatteryLevel(batteryLvl);
+        } 
+        else {
             ble.waitForEvent();
         }
     }