Pedometer to BT
Dependencies: FXOS8700 Hexi_KW40Z Hexi_OLED_SSD1351
Fork of Hexi_BLE_Example_Modified by
main.cpp
- Committer:
- catchvibes95
- Date:
- 2018-06-05
- Revision:
- 5:de39081e1aaf
- Parent:
- 4:20d4eebfa986
File content as of revision 5:de39081e1aaf:
#include "mbed.h" #include "Hexi_KW40Z.h" #include "Hexi_OLED_SSD1351.h" #include "OLED_types.h" #include "OpenSans_Font.h" #include "string.h" #include "FXOS8700.h" #define LED_ON 0 #define LED_OFF 1 void UpdateSensorData(void); void StartHaptic(void); void StopHaptic(void const *n); void txTask(void); DigitalOut led1(LED_GREEN); // RGB LED Serial pc(USBTX, USBRX); // Serial interface FXOS8700 accel(PTC11, PTC10); DigitalOut redLed(LED1,1); DigitalOut greenLed(LED2,1); DigitalOut blueLed(LED3,1); DigitalOut haptic(PTB9); /* 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; Ticker flipper; /* Text Buffer */ char text[20]; uint8_t battery = 100; uint8_t light = 0; uint16_t humidity = 4500; uint16_t temperature = 2000; uint16_t pressure = 9000; uint16_t x = 0; uint16_t y = 5000; uint16_t z = 10000; // Variables float accel_data[3]; // Storage for the data from the sensor float accel_rms=0.0; // RMS value from the sensor float ax, ay, az; // Integer value from the sensor to be displayed const uint8_t *image1; // Pointer for the image1 to be displayed char text1[20]; // Text Buffer for dynamic value displayed char text2[20]; // Text Buffer for dynamic value displayed char text3[20]; // Text Buffer for dynamic value displayed float dot; float old_acc=0; float new_acc=0; float old_accx, old_accy, old_accz, old_dot=0.0; uint8_t StepNum = 0, StepNumber = 0; float filter_buf[75]; /****************************Call Back Functions*******************************/ float Filter(int s) { accel.acquire_accel_data_g(accel_data); float filter_sum = 0.0; //printf("%d\n\r",s); for(int i = 0; i < 75; i++) { filter_buf[i] = accel_data[s]; //printf("%4.2f\n\r",filter_buf[i]); filter_sum += filter_buf[i]; } return (float)(filter_sum / 75); } void ButtonRight(void) { StartHaptic(); kw40z_device.ToggleAdvertisementMode(); } void ButtonLeft(void) { StartHaptic(); kw40z_device.ToggleAdvertisementMode(); } void ButtonUp(void) { StartHaptic(); oled.FillScreen(COLOR_BLACK); /* Get OLED Class Default Text Properties */ oled_text_properties_t textProperties = {0}; oled.GetTextProperties(&textProperties); /* Change font color to Blue */ textProperties.fontColor = COLOR_BLUE; oled.SetTextProperties(&textProperties); strcpy((char *) text1,"Steps: "); oled.Label((uint8_t *)text1,3,45); sprintf(text1,"%d",StepNumber); /* Display time reading in 35px by 15px textbox at(x=55, y=40) */ oled.TextBox((uint8_t *)text1,70,45,20,15); //Increase textbox for more digits } void ButtonDown(void) { oled.FillScreen(COLOR_BLACK); /* Get OLED Class Default Text Properties */ oled_text_properties_t textProperties = {0}; oled.GetTextProperties(&textProperties); /* 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); } 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); } // Key modification: use the alert functionality enabled by the host-ble interface // to define our own command. void AlertReceived(uint8_t *data, uint8_t length) { StartHaptic(); data[19] = 0; pc.printf("%s\n\r", data); // data (our command) must 20 bytes long. // CMD for turning on: 'ledonledonledonledon' if (data[4] == 'n') { greenLed = LED_ON; redLed = LED_ON; blueLed = LED_ON; pc.printf("on\n\r", data); // CMD for turning off: 'ledoffledoffledoffled' } else if (data[4] == 'f') { greenLed = LED_OFF; redLed = LED_OFF; blueLed = LED_OFF; pc.printf("off\n\r", data); } } /***********************End of Call Back Functions*****************************/ /********************************Main******************************************/ int main() { accel.accel_config(); /* Register callbacks to application functions */ kw40z_device.attach_buttonLeft(&ButtonLeft); kw40z_device.attach_buttonRight(&ButtonRight); kw40z_device.attach_buttonDown(&ButtonDown); kw40z_device.attach_buttonUp(&ButtonUp); kw40z_device.attach_passkey(&PassKey); kw40z_device.attach_alert(&AlertReceived); pc.printf("hello\n\r"); /* Turn on the backlight of the OLED Display */ oled.DimScreenON(); /* Fills the screen with solid black */ 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) { UpdateSensorData(); /*Notify Hexiwear App that it is running Sensor Tag mode*/ kw40z_device.SendSetApplicationMode(GUI_CURRENT_APP_SENSOR_TAG); /*The following is sending dummy data over BLE. Replace with real data*/ /*Send Battery Level for 20% */ kw40z_device.SendBatteryLevel(StepNumber); /*Send Ambient Light Level at 50% */ //kw40z_device.SendAmbientLight(light); /*Send Humidity at 90% */ //kw40z_device.SendHumidity(humidity); /*Send Temperature at 25 degrees Celsius */ //kw40z_device.SendTemperature(temperature); /*Send Pressure at 100kPA */ //kw40z_device.SendPressure(pressure); /*Send Mag,Accel,Gyro Data. */ // kw40z_device.SendGyro(x,y,z); // kw40z_device.SendAccel(z,x,y); // kw40z_device.SendMag(y,z,x); Thread::wait(10); } } void UpdateSensorData(void) { accel.acquire_accel_data_g(accel_data); //printf("Accelerometer \tX-Axis %4.2f \tY-Axis %4.2f \tZ-Axis %4.2f \tRMS %4.2f\n\r",accel_data[0],accel_data[1],accel_data[2],accel_rms); ax = Filter(0); ay = Filter(1); az = Filter(2); wait(0.02); accel_rms = sqrt((ax*ax)+(ay*ay)+(az*az)/3); //printf("Accelerometer \tX-Axis %4.2f \tY-Axis %4.2f \tZ-Axis %4.2f \tRMS %4.2f\n\r",ax,ay,az,accel_rms); dot = (old_accx * ax)+(old_accy * ay)+(old_accz * az); old_acc = abs(sqrt(old_accx*old_accx+old_accy*old_accy+old_accz*old_accz)); new_acc = abs(sqrt(ax*ax+ay*ay+az*az)); //printf("\nOld Acceleration: %4.2f\n\r",old_acc); //printf("New Acceleration: %4.2f\n\r",new_acc); dot /= (old_acc * new_acc); //printf("\nDot: %4.2f\n\r",dot); //printf("Old Dot: %4.2f\n\r",old_dot); oled_text_properties_t textProperties = {0}; oled.GetTextProperties(&textProperties); /* Set text properties to white and right aligned for the dynamic text */ textProperties.fontColor = COLOR_BLUE; textProperties.alignParam = OLED_TEXT_ALIGN_LEFT; oled.SetTextProperties(&textProperties); /* Display Legends */ //strcpy((char *) text1,"Steps: "); //oled.Label((uint8_t *)text1,3,45); StepNum = StepNumber; if(abs(dot - old_dot) >= 0.05 && abs(dot - old_dot) <= 0.10) { StepNumber += 1; } //printf("%4.2f\n\r",dot); old_accx = ax; old_accy = ay; old_accz = az; old_dot = dot; Thread::wait(250); } void StartHaptic(void) { hapticTimer.start(50); haptic = 1; } void StopHaptic(void const *n) { haptic = 0; hapticTimer.stop(); }