Diff: main.cpp

Revision:

0:bd3942174be3

Child:

1:93fbe55738f4

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Sat Oct 08 10:18:03 2016 +0000
@@ -0,0 +1,200 @@
+#include "mbed.h"
+#include "Hexi_KW40Z.h"
+#include "Hexi_OLED_SSD1351.h"
+#include "OLED_types.h"
+#include "OpenSans_Font.h"
+#include "string.h"
+
+#define LED_ON      0
+#define LED_OFF     1
+
+   
+void StartHaptic(void);
+void StopHaptic(void const *n);
+void txTask(void);
+long ReadWeight(void);
+uint16_t getGram();
+long offset = 0;
+long getAverageValue(int times);
+
+// Pin connections for Hexiwear
+//MPL3115A2 MPL3115A2( PTC11, PTC10, MPL3115A2_I2C_ADDRESS);
+/* pos [0] = altimeter or pressure value */
+/* pos [1] = temperature value */
+float sensor_data[2];
+
+DigitalOut redLed(LED1,1);
+DigitalOut greenLed(LED2,1);
+DigitalOut blueLed(LED3,1);
+DigitalOut haptic(PTB9);
+
+DigitalIn HX_DOUT(PTC3);
+DigitalOut HX_PD_SCK(PTC5);
+
+/* Define timer for haptic feedback */
+RtosTimer hapticTimer(StopHaptic, osTimerOnce);
+
+/* Instantiate the Hexi KW40Z Driver (UART TX, UART RX) */ 
+KW40Z kw40z_device(PTE24, PTE25);
+
+/* Instantiate the SSD1351 OLED Driver */ 
+SSD1351 oled(PTB22,PTB21,PTC13,PTB20,PTE6, PTD15); /* (MOSI,SCLK,POWER,CS,RST,DC) */
+
+/*Create a Thread to handle sending BLE Sensor Data */ 
+Thread txThread;
+
+ /* Text Buffer */ 
+char text[20]; 
+
+/****************************Call Back Functions*******************************/
+void ButtonRight(void)
+{
+    StartHaptic();
+    kw40z_device.ToggleAdvertisementMode();
+}
+
+void ButtonLeft(void)
+{
+    StartHaptic();
+    kw40z_device.ToggleAdvertisementMode();
+}
+
+void PassKey(void)
+{
+    StartHaptic();
+    strcpy((char *) text,"PAIR CODE");
+    oled.TextBox((uint8_t *)text,0,25,95,18);
+  
+    /* Display Bond Pass Key in a 95px by 18px textbox at x=0,y=40 */
+    sprintf(text,"%d", kw40z_device.GetPassKey());
+    oled.TextBox((uint8_t *)text,0,40,95,18);
+}
+
+/***********************End of Call Back Functions*****************************/
+
+/********************************Main******************************************/
+
+int main()
+{    
+
+    wait(30f);
+    offset = getAverageValue(20);
+    /* Get OLED Class Default Text Properties */
+    oled_text_properties_t textProperties = {0};
+    oled.GetTextProperties(&textProperties);    
+
+    /* Turn on the backlight of the OLED Display */
+    oled.DimScreenON();
+    
+    /* Fills the screen with solid black */         
+    oled.FillScreen(COLOR_BLACK);
+        
+    /* Register callbacks to application functions */
+    kw40z_device.attach_buttonLeft(&ButtonLeft);
+    kw40z_device.attach_buttonRight(&ButtonRight);
+    kw40z_device.attach_passkey(&PassKey);
+
+    /* Change font color to white */ 
+    textProperties.fontColor   = COLOR_WHITE;
+    oled.SetTextProperties(&textProperties);
+    
+    /* Display Bluetooth Label at x=17,y=30 */ 
+    strcpy((char *) text,"89.9kg");
+    oled.Label((uint8_t *)text,17,30);
+    
+    
+    /* Change font color to Blue */ 
+    textProperties.fontColor   = COLOR_BLUE;
+    oled.SetTextProperties(&textProperties);
+    
+    /* Display Bluetooth Label at x=17,y=65 */ 
+    strcpy((char *) text,"BLUETOOTH");
+    oled.Label((uint8_t *)text,17,65);
+    
+    /* Change font color to white */ 
+    textProperties.fontColor   = COLOR_WHITE;
+    textProperties.alignParam = OLED_TEXT_ALIGN_CENTER;
+    oled.SetTextProperties(&textProperties);
+    
+    /* Display Label at x=22,y=80 */ 
+    strcpy((char *) text,"Tap Below");
+    oled.Label((uint8_t *)text,22,80);
+         
+    uint8_t prevLinkState = 0; 
+    uint8_t currLinkState = 0; 
+    txThread.start(txTask); /*Start transmitting Sensor Tag Data */
+    
+    while (true) 
+    {
+        blueLed = !kw40z_device.GetAdvertisementMode(); /*Indicate BLE Advertisment Mode*/   
+        Thread::wait(50);
+    }
+}
+
+/******************************End of Main*************************************/
+
+
+/* txTask() transmits the sensor data */
+void txTask(void){
+   
+   while (true) 
+   {
+        /* sets the gain of hx711 to 120*/
+        ReadWeight();
+        
+        /*Notify Hexiwear App that it is running Sensor Tag mode*/
+        kw40z_device.SendSetApplicationMode(GUI_CURRENT_APP_SENSOR_TAG);
+
+        /*Send weight using pressure service*/ 
+        kw40z_device.SendPressure(getGram());      
+        Thread::wait(1000);                 
+    }
+}
+
+void StartHaptic(void)  {
+    hapticTimer.start(50);
+    haptic = 1;
+}
+
+void StopHaptic(void const *n) {
+    haptic = 0;
+    hapticTimer.stop();
+}
+
+long ReadWeight(void)
+{
+        long Count;
+        unsigned char i;
+        HX_PD_SCK.write(0);
+        Count = 0;
+        while(HX_DOUT.read() == 1);
+        for (i=0;i<24;i++)
+        {
+                HX_PD_SCK.write(1);
+                Count=Count<<1;
+                HX_PD_SCK.write(0);
+                if(HX_DOUT.read() == 1) Count++;
+        }
+        HX_PD_SCK.write(1);
+        Count=Count^0x800000;
+        HX_PD_SCK.write(0);
+        return(Count);
+}
+
+uint16_t getGram(){
+    return ((getAverageValue(20) - offset))/1000;
+}
+
+long getAverageValue(int times){
+    long sum = 0;
+    for (int i = 1; i <= times; i++)
+    {
+        sum += ReadWeight();
+    }
+    return sum / times;
+}
+
+
+
+
+