Code to be run for the project Group Fitness
Dependencies: FXOS8700 Hexi_KW40Z Hexi_OLED_SSD1351 MAX30101
Fork of final_project_ee119 by
main.cpp
- Committer:
- angelasnail
- Date:
- 2018-06-15
- Revision:
- 6:328ef7a29083
- Parent:
- 5:a2f68bbb5400
- Child:
- 7:e5fcb30509ea
File content as of revision 6:328ef7a29083:
#include "mbed.h" #include "mbed_events.h" #include "Hexi_KW40Z.h" #include "Hexi_OLED_SSD1351.h" #include "OLED_types.h" #include "OpenSans_Font.h" #include "string.h" #include "FXOS8700.h" void StartHaptic(void); void StopHaptic(void const *n); float Filter(int s); void AlertReceived(uint8_t *data, uint8_t length); void UpdateSensorData(void); void txTask(void); FXOS8700 accel(PTC11, PTC10); /* 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; Thread t; char text[20]; // 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*******************************/ void ButtonUp(void) { StartHaptic(); flag=1; } void ButtonDown(void) { StartHaptic(); flag=2; } void ButtonRight(void) { StartHaptic(); flag=3; } // just write the received data to the screen void displayString() { if (!processedReceivedData) { clearScreen(); processedReceivedData = true; oled_text_properties_t textProperties = {0}; oled.GetTextProperties(&textProperties); textProperties.fontColor = COLOR_BLUE; oled.SetTextProperties(&textProperties); sprintf(text, "USER: %s\0",user); oled.Label((uint8_t*)text,0,0); sprintf(text, "MEAN HR: %s\0",mean); oled.Label((uint8_t*)text,0,15); sprintf(text, "MAX HR: %s\0",max); oled.Label((uint8_t*)text,0,30); sprintf(text, "MIN HR: %s\0",min); oled.Label((uint8_t*)text,0,45); sprintf(text, "STEPS: %s\0",steps); oled.Label((uint8_t*)text,0,60); } } // main() runs in its own thread in the OS int main() { accel.accel_config(); txThread.start(txTask); /*Start transmitting Sensor Tag Data */ while (true) { Thread::wait(50); } } void txTask(void){ while (true) { if (kw40z_device.GetLinkState() == 0) { kw40z_device.ToggleAdvertisementMode(); } UpdateSensorData(); /*Notify Hexiwear App that it is running Sensor Tag mode*/ kw40z_device.SendSetApplicationMode(GUI_CURRENT_APP_SENSOR_TAG); kw40z_device.SendAlert(result, 2); kw40z_device.SendBatteryLevel(StepNumber); Thread::wait(10); } } void UpdateSensorData(void) { if(flag == 1) { result[1]=1; flag=0; userChosen = 1; } if(flag == 2) { result[1]=2; flag=0; userChosen = 2; } if(flag == 3){ result[1]=3; flag=0; userChosen = 3; } accel.acquire_accel_data_g(accel_data); ax = Filter(0); ay = Filter(1); az = Filter(2); wait(0.02); accel_rms = sqrt((ax*ax)+(ay*ay)+(az*az)/3); 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)); dot /= (old_acc * new_acc); /* Display Legends */ StepNum = StepNumber; if(abs(dot - old_dot) >= 0.05 && abs(dot - old_dot) <= 0.10) { StepNumber += 1; } 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(); } 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); } // 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; // 1: copy data into a global array if (processedReceivedData) { processedReceivedData = false; for (int i = 0; i < 9; i++) { receivedSummaryData1[i] = data[i]; } for (int i = 9; i < 18; i++) { receivedSummaryData2[i-9] = data[i]; } } user[0] = '0' + userChosen; mean[0] = data[0]; mean[1] = data[1]; mean[2] = data[2]; max[0] = data[5]; max[1] = data[6]; max[2] = data[7]; min[0] = data[10]; min[1] = data[11]; min[2] = data[12]; steps[0] = data[15]; steps[1] = data[16]; steps[2] = data[17]; steps[3] = data[18]; steps[4] = data[19]; user[1] = 0; mean[3] = 0; max[3] = 0; min[3] = 0; steps[5] = 0; receivedSummaryData1[9] = 0; receivedSummaryData2[9] = 0; // if you haven't yet processed the data that pi sent // you in the past, then don't do anything. // 2: queue up the displaying of that string displayEventQueue.call(&displayString); }