File content as of revision 4:06edbeb05013:

#include "mbed.h"
#include "stm32l496g_discovery.h"
#include "stm32l496g_discovery_lcd.h"
#include "stm32l496g_discovery_sd.h"
#include "DS1820.h"
#include "epd1in54.h"
#include "stdio.h"
#include "math.h"
//#include "GPS.h"
#include "TinyGPSPlus.h"


#define TX5 PG_7
#define RX5 PG_8
#define GPSBaud 9600
#define Serial0Baud 115200
   

#define NUM_OF_BLOCKS            5
#define BLOCK_START_ADDR         0
#define BLOCK_SIZE               512
#define BLOCK_END_ADDR           (BLOCK_SIZE * NUM_OF_BLOCKS)
#define BUFFER_WORDS_SIZE        ((BLOCK_SIZE * NUM_OF_BLOCKS) >> 2) // Total data size in bytes

//GPS gps(PG_7, PG_8, 4800); // (Tx, Rx, Baud rate)

Serial GPSSerial(TX5, RX5);
TinyGPSPlus tgps;

void displayInfo(void);

int i = 0;

//extern Serial serialGPS;
//extern TinyGPSPlus gps;

//Serial serialGPS(PG_7, PG_8,9600);
//serial_baud(serialGPS,9600);

//DS18B20 temperature sensor
 Serial serial(USBTX, USBRX);
 DS1820  ds1820(PG_15);    //pin name connected to the DS1820 data pin
 float t;
 float tempSerial;
 float tCompare = 0;
 int ab=1;
 
 
//E-ink Display
// Control
PinName rst;
PinName dc;
PinName busy;
//SPI communication
PinName mosi;
PinName miso;
PinName sclk;
PinName cs;
unsigned char frame_black[EPD_HEIGHT*EPD_WIDTH/8];

uint32_t aTxBuffer[BUFFER_WORDS_SIZE];
uint32_t aRxBuffer[BUFFER_WORDS_SIZE];





//SD card
//static void print_demo_title(void);
//static void print_PASS(void);
//static void print_FAIL(void);
//static void Fill_Buffer(uint32_t *pBuffer, uint32_t uwBufferLenght, uint32_t uwOffset);
//static uint8_t Buffercmp(uint32_t* pBuffer1, uint32_t* pBuffer2, uint16_t BufferLength);
static void print_demo_title(void)
{
    BSP_LCD_Init();
    BSP_LCD_Clear(LCD_COLOR_WHITE);
    BSP_LCD_SetTextColor(LCD_COLOR_BLUE);
    BSP_LCD_FillRect(0, 0, BSP_LCD_GetXSize(), 80);
    BSP_LCD_SetTextColor(LCD_COLOR_WHITE);
    BSP_LCD_SetBackColor(LCD_COLOR_BLUE);
    BSP_LCD_SetFont(&Font24);
    BSP_LCD_DisplayStringAt(0, 0, (uint8_t *)"SDCARD", CENTER_MODE);
    BSP_LCD_SetFont(&Font12);
    BSP_LCD_DisplayStringAt(0, 30, (uint8_t *)"This example shows how to write", CENTER_MODE);
    BSP_LCD_DisplayStringAt(0, 45, (uint8_t *)"and read data on the SDCard", CENTER_MODE);
    BSP_LCD_SetFont(&Font20);
}

//static void print_PASS(void)
//{
  //  BSP_LCD_SetTextColor(LCD_COLOR_BLACK);
   // BSP_LCD_SetBackColor(LCD_COLOR_GREEN);
  //  BSP_LCD_DisplayStringAt(0, LINE(11), (uint8_t *)"Demo OK", CENTER_MODE);
    //while(1);
//}

static void print_FAIL(void)
{
    BSP_LCD_SetBackColor(LCD_COLOR_RED);
    BSP_LCD_DisplayStringAt(0, LINE(11), (uint8_t *)"Demo FAILED", CENTER_MODE);
   // while(1);
}

/**
  * @brief  Fills buffer with user predefined data.
  * @param  pBuffer: pointer on the buffer to fill
  * @param  uwBufferLenght: size of the buffer to fill
  * @param  uwOffset: first value to fill on the buffer
  * @retval None
  */
static void Fill_Buffer(uint32_t *pBuffer, uint32_t uwBufferLength, uint32_t uwOffset)
{
  uint32_t tmpIndex = 0;
  /* Put in global buffer different values */
  for (tmpIndex = 0; tmpIndex < uwBufferLength; tmpIndex++ ) {
    pBuffer[tmpIndex] = tmpIndex + uwOffset;
  }
}
 
/**
  * @brief  Compares two buffers.
  * @param  pBuffer1, pBuffer2: buffers to be compared.
  * @param  BufferLength: buffer's length
  * @retval 0: pBuffer2 identical to pBuffer1
  *         1: pBuffer2 differs from pBuffer1
  */
static uint8_t Buffercmp(uint32_t* pBuffer1, uint32_t* pBuffer2, uint16_t BufferLength)
{
  while (BufferLength--) {
    if (*pBuffer1 != *pBuffer2) {
      return 1;
    }
    pBuffer1++;
    pBuffer2++;
  }
  return 0;
}


//function to determine if within polygon geofence 
//first argument is an integer, the rest are floats
//The last vertix should be the same as the first vertix
int pnpoly(int nvert, float *vertx, float *verty, float testx, float testy)
{
  int i, j, c = 0;
  for (i = 0, j = nvert-1; i < nvert; j = i++) {
    if ( ((verty[i]>testy) != (verty[j]>testy)) &&
     (testx < (vertx[j]-vertx[i]) * (testy-verty[i]) / (verty[j]-verty[i]) + vertx[i]) )
       c = !c;
  }
  return c;
}


int inCircle(float radius, float xcentre, float ycentre, float testx, float testy)
{
    float distance;
    int test;
    distance = (sqrt((testx-xcentre)*(testx-xcentre)+(testy-ycentre)*(testy-ycentre)));
       
     if(distance < radius){
            test = 1;
            }
        else{
            test = 0;
            }
  return (test);
}

void displayInfo(void)
{
  serial.printf("Location: "); 
  if (tgps.location.isValid())
  {
    serial.printf("%3.6f, %3.6f", tgps.location.lat(), tgps.location.lng());
  }
  else
  {
    serial.printf("INVALID");
  }

  serial.printf(" - Date/Time: ");
  if (tgps.date.isValid())
  {
    serial.printf("%d/", tgps.date.year());
    if (tgps.date.month() < 10) serial.printf("0");
    serial.printf("%d/", tgps.date.month());
    if (tgps.date.day() < 10) serial.printf("0");
    serial.printf("%d", tgps.date.day());
  }
  else
  {
    serial.printf("INVALID");
  }

  serial.printf(" ");
  if (tgps.time.isValid())
  {
    if (tgps.time.hour() < 10) serial.printf("0");
    serial.printf("%d:", tgps.time.hour());
    if (tgps.time.minute() < 10) serial.printf("0");
    serial.printf("%d:", tgps.time.minute());
    if (tgps.time.second() < 10) serial.printf("0");
    serial.printf("%d\r\n", tgps.time.second());
  }
  else
  {
    serial.printf("INVALID\r\n");
  }
}


float getTemp(float t)
{

    // getTemp(tRead);
    if(ds1820.begin()) {
        ds1820.startConversion();
        wait(1.0);
        t = ds1820.read();         // read temperature
        tCompare;
        serial.printf("temp = %3.1f\r\n", t);     // Display temp on terminal

    } else
        serial.printf("No DS1820 sensor found!\r\n");



    
    mosi = PB_5;
    miso = PB_4;
    sclk = PA_5;
    cs = PA_15;
    rst = PI_6;
    dc = PG_6;
    busy = PI_11;

    char cVal[32];
    //char* t_str;
    sprintf(cVal,"%.2f", t);
    
    
     
    memset(frame_black, 0xFF, sizeof(unsigned char)*EPD_HEIGHT*EPD_WIDTH/8);
    Epd epd = Epd(mosi, miso, sclk, cs, dc, rst, busy);
    
    
    if (epd.Init(lut_full_update) != 0) {
        return -1;
    }
    /*Write strings to the buffer */
    epd.DrawStringAt(frame_black, 50, 30, cVal, &Font24, COLORED);
    epd.DrawStringAt(frame_black, 28, 10, "Temperature", &Font16, COLORED);
    /* Display the frame_buffer */
    epd.SetFrameMemory(frame_black, 0, 0, epd.width, epd.height);
    epd.DisplayFrame();
    epd.Sleep();
    return t;
}

int main()
{
    GPSSerial.baud(GPSBaud);
    wait(0.001);
    
    uint8_t status;
    print_demo_title();
    wait(0.2);
    
    // Initialization
    status = BSP_SD_Init();
    if (status == MSD_OK) {
      BSP_LCD_DisplayStringAt(0, LINE(5), (uint8_t *)"SD INIT OK", LEFT_MODE);
    }
    else if (status == MSD_ERROR_SD_NOT_PRESENT) {
      BSP_LCD_DisplayStringAt(0, LINE(5), (uint8_t *)"SD CARD NOT FOUND", LEFT_MODE);
      print_FAIL();
    }
    else {
      BSP_LCD_DisplayStringAt(0, LINE(5), (uint8_t *)"SD INIT FAIL", LEFT_MODE);
      print_FAIL();
    }
    
    // Erase
    status = BSP_SD_Erase(BLOCK_START_ADDR, BLOCK_END_ADDR);
    if (status == MSD_OK) {
      BSP_LCD_DisplayStringAt(0, LINE(6), (uint8_t *)"SD ERASE OK", LEFT_MODE);
    }
    else {
      BSP_LCD_DisplayStringAt(0, LINE(6), (uint8_t *)"SD ERASE FAIL", LEFT_MODE);
      print_FAIL();
    }
    
    // Prepare the buffer to write
    Fill_Buffer(aTxBuffer, BUFFER_WORDS_SIZE, 0x22FF);
          serial.printf("tx =  0x%02X\n", aTxBuffer);

   
    // Write
    status = BSP_SD_WriteBlocks(aTxBuffer, BLOCK_START_ADDR, NUM_OF_BLOCKS, SD_DATATIMEOUT);
    //status = BSP_SD_WriteBlocks_DMA(aTxBuffer, BLOCK_START_ADDR, NUM_OF_BLOCKS);
    if (status == MSD_OK) {
      BSP_LCD_DisplayStringAt(0, LINE(7), (uint8_t *)"SD WRITE OK", LEFT_MODE);
      
    }
    else {
      BSP_LCD_DisplayStringAt(0, LINE(7), (uint8_t *)"SD WRITE FAIL", LEFT_MODE);
      print_FAIL();
    }
    
    // Read
    status = BSP_SD_ReadBlocks(aRxBuffer, BLOCK_START_ADDR, NUM_OF_BLOCKS, SD_DATATIMEOUT);
    //status = BSP_SD_ReadBlocks_DMA(aRxBuffer, BLOCK_START_ADDR, NUM_OF_BLOCKS);
    if (status == MSD_OK) {
      BSP_LCD_DisplayStringAt(0, LINE(8), (uint8_t *)"SD READ OK", LEFT_MODE);
      serial.printf("rx =  0x%02X\n", aRxBuffer);
    }
    else {
      BSP_LCD_DisplayStringAt(0, LINE(8), (uint8_t *)"SD READ FAIL", LEFT_MODE);
      print_FAIL();
    }
    
    // Compare data
    if (Buffercmp(aTxBuffer, aRxBuffer, BUFFER_WORDS_SIZE) == 0) {
      BSP_LCD_DisplayStringAt(0, LINE(9), (uint8_t *)"SD DATA OK", LEFT_MODE);
    }
    else {
      BSP_LCD_DisplayStringAt(0, LINE(9), (uint8_t *)"SD DATA FAIL", LEFT_MODE);
      print_FAIL();
    }

    int inpoly;
    float x[5] = { 1,4,4,1,1};
    float y[5] = { 1,1,4,4,1};
    float xtest = 1.5;
    float ytest = 2;
    float cx = 0;
    float cy = 0;
    float r = 5;
    float ans = 0;
 
  while(1){ 
    //inCircle(r, cx, cy, xtest, ytest);
    //serial.printf("rx =  0x%02X\n", aRxBuffer);
    //tempSerial = getTemp(t);
    //inpoly = pnpoly(5,x, y, xtest,ytest);
    //serial.printf("inpoly = %d\r\n", inpoly);
    //ans = inCircle(r, cx, cy, xtest, ytest);
    //serial.printf("distance = %3.1f\r\n", ans);
   // GPS
   //if(gps.sample()){
     //         serial.printf("%f\t%c\t%f\t%c\t%f\t%f\t%f\n\r",gps.longitude, gps.ns,gps.latitude,gps.ew, gps.alt, gps.geoid, gps.time);
     //         serial.printf("%d:%d:%d",gps.hour,gps.minute,gps.seconed);
     //       }
   
   while(1) {

        if (tgps.encode(GPSSerial.getc()))
        {
            displayInfo();
            wait(0.1); //little delay to prevent double writing
        }

        if (millis() > 5000 && tgps.charsProcessed() < 10)
        {
            serial.printf("No GPS detected: check wiring.\r\n");
//            while(true);
            break;
        }


      }
      serial.printf("%d\r\n",i);
      i++;
      wait(1.0);
    }

    
    wait(5);
  }