File content as of revision 7:b78ff34209e5:

/* mbed main.cpp to test adafruit 2.8" TFT LCD shiled w Touchscreen
 * Copyright (c) 2014, 2015 Motoo Tanaka @ Design Methodology Lab
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
 
 /* 
  * Note: This program is derived from the SeeeStudioTFTv2 program.
  * Although both program share same ILI9341 TFT driver,
  * the touch sensor was not same with the Display I purchased from Akizuki.
  * http://akizukidenshi.com/catalog/g/gM-07747/
  * The touch sensor on the display is STMPE610,
  * so I hacked the minimum spi driver for it (polling mode only).
  */

#include "mbed.h"
#include <math.h>
#include "ILI9341.h"
#include "SeeedStudioTFTv2.h"
#include "BNO055.h"
#include "HTU21D.h"
#include "BMP180.h"

#include "Arial12x12.h"
#include "Arial24x23.h"
#include "Arial28x28.h"
#include "Arial43x48_numb.h"

#define PIN_CS_TSC      PA_9 
#define PIN_TSC_INTR    PA_8
#define PIN_RESET_TFT   PC_13 /* place holder */

#define PIN_XP          A3
#define PIN_XM          A1
#define PIN_YP          A2
#define PIN_YM          A0
#define PIN_MOSI        D11
#define PIN_MISO        D12
#define PIN_SCLK        D13
#define PIN_CS_TFT      D5
#define PIN_DC_TFT      D6
#define PIN_CS_SD       D4
#define PIN_RESET       D7

BNO055_ID_INF_TypeDef       bno055_id_inf;
BNO055_EULER_TypeDef        euler_angles;
BNO055_QUATERNION_TypeDef   quaternion;
BNO055_LIN_ACC_TypeDef      linear_acc;
BNO055_GRAVITY_TypeDef      gravity;
BNO055_TEMPERATURE_TypeDef  chip_temp;

#define DEVICE_NAME     "F411RE"

#ifndef TARGET_NECLEO_F411RE
#define TARGET_NECLEO_F411RE 
#endif


//DigitalOut backlight(PB_3) ;
// DigitalOut tsc_cs(PA_9, 1) ;
// DigitalOut tft_cs(PB_6, 1) ;

// Display
ILI9341 TFT(SPI_8, 10000000, 
    PIN_MOSI, PIN_MISO,  PIN_SCLK, 
    PIN_CS_TFT, PIN_RESET_TFT, PIN_DC_TFT, "Adafruit2.8");
    
// TouchScreen
TouchScreen TSC(PIN_XP, PIN_XM, PIN_YP, PIN_YM);

// 3 Axis IMU
BNO055 imu(I2C_SDA, I2C_SCL, PIN_RESET);  // Reset =D7, addr = BNO055_G_CHIP_ADDR, mode = MODE_NDOF <- as default

// Humidity and Temperature
HTU21D temphumid(I2C_SDA, I2C_SCL);

// Pressure
BMP180 bmp180(I2C_SDA, I2C_SCL);

int page = 0 ;
int numPage = 2 ;

void initTFT(void)
{
    //Configure the display driver
    TFT.BusEnable(true) ;
    TFT.FastWindow(true) ;
    TFT.background(Black);
    TFT.foreground(White);
    wait(0.01) ;
    TFT.cls();
    TFT.BusEnable(false) ;
}

void screen1(void) // Welcome Screen
{
    TFT.BusEnable(true) ;
    //backlight = 0 ;
    TFT.background(White) ;
    wait(0.1) ;
    TFT.cls() ;
    wait(0.1) ;
    
    TFT.set_font((unsigned char*) Arial24x23);
    TFT.foreground(Red) ;
    TFT.locate(80, 40) ;
    TFT.printf("MBED");
    TFT.foreground(Blue);
    TFT.locate(60, 80) ;
    TFT.printf("2.8\"TFT") ; 
    TFT.locate(40, 120) ;
    TFT.printf("with touch") ;
    TFT.foreground(Black);
    TFT.set_font((unsigned char*) Arial12x12);
    TFT.foreground(Blue) ;
    TFT.locate(30, 180) ;
    TFT.printf("This program is running on") ;
    TFT.locate(30, 200) ;
    TFT.printf("ST Nucleo F411RE with") ;
    TFT.locate(30, 220) ;
    TFT.printf("a program developed in mbed") ;
    TFT.foreground(Green) ;
    TFT.locate(30, 260) ;
    TFT.printf("To advance demo page, touch") ;
    TFT.locate(30, 280) ;
    TFT.printf("and hold right side of screen") ;
    TFT.locate(30, 300) ;
    TFT.printf("until the next screen starts") ;
    TFT.BusEnable(false) ;
    //backlight = 1 ;
}

void screen2(void) // Graphics
{
    //Draw some graphics
    int i, x[2], y[2] ;
    //backlight = 0 ;
    TFT.BusEnable(true) ;
    TFT.background(Black);
    wait(0.1) ;
    TFT.foreground(White);
    wait(0.1) ;
    TFT.cls() ;
    wait(0.1) ;
    TFT.set_font((unsigned char*) Arial12x12);
    TFT.locate(90,0);
    TFT.printf("Graphics");
    
    x[0] = 25 ; x[1] = 224 ;
    y[0] = 20 ; y[1] = 219 ;
    for (i = 20 ; i < 220 ; i += 10) {
        TFT.line(i+5, y[0], i+5, y[1], Blue) ;
        TFT.line(x[0], i, x[1], i, Blue) ;
    }
    TFT.line(125, y[0], 125, y[1], Green) ;
    TFT.line(x[0], 120, x[1], 120, Green) ;
    TFT.rect(x[0],y[0], x[1], y[1], Green) ;
    TFT.locate(10, 20) ;
    TFT.printf("V") ;
    TFT.locate(0, 115) ;
    TFT.printf("0.0") ;
    TFT.locate(115, 225) ;
    TFT.printf("0.0") ;
    TFT.locate(215, 225) ;
    TFT.printf("T") ;

    double s;
    for (int i = x[0]; i < 225; i++) {
        s = 40 * sin((long double)i / 20);
        TFT.pixel(i, 120 + (int)s, White);
    }
    
    TFT.fillrect(10, 240, 229, 309, White) ;
    TFT.rect(10, 240, 229, 309, Red) ;
    TFT.rect(11, 241, 228, 308, Red) ;
    
    TFT.background(White) ;
    TFT.foreground(Black) ;
    TFT.locate(20, 250) ;
    TFT.printf("With QVGA resolution") ;
    TFT.locate(20, 270) ;
    TFT.printf("simple graphics drawing") ;
    TFT.locate(20, 290) ;
    TFT.printf("capability is provided") ;
    TFT.BusEnable(false) ;
    //backlight = 1 ;
}    

double clip(double src)
{
    double value ;
    value = src ;
    if (value < 0.0) {
        value = 0.0 ;
    } else if (value > 2.0) {
        value = 2.0 ;
    }
    return( value ) ;
}

void incPage(void)
{
    page++ ;
    if (page >= numPage) {
        page = 0 ;
    }
}

void decPage(void) 
{
    page-- ;
    if (page < 0) {
        page = numPage - 1 ;
    }
}
    
int main()
{
    
    if (bmp180.init() != 0) {
        printf("Error communicating with BMP180\n");
    } else {
            printf("Initialized BMP180\n");
           
    }
    wait(1);
   
    
    
    // uint16_t x, y, z ;
    int prevPage = 99 ;
    bool waitTouch = false ;
    point p;
    
    printf("Hello World\n") ;
   
    // screen0() ;
        
    printf("Program Started!\n\r") ;
    
    for(;;) {
//        printf("TFT width = %d, height = %d\n\r", TFT.width(), TFT.height()) ;
        // tft_cs = 0 ;
        switch(page) {
        case 0:
            if (prevPage != page) {
                screen1() ;
            }
            waitTouch = true ;
            break ;
        case 1:
            if (prevPage != page) {
                screen2() ; 
            }
            waitTouch = true ;
            break ;
        default:
            page = 0 ; 
            break ;
        }
        prevPage = page ;

        // tft_cs = 1 ;
        do {
            TSC.getTouch(p);
           
            bmp180.startTemperature();
            wait_ms(5);     // Wait for conversion to complete
            float temp;
            if(bmp180.getTemperature(&temp) != 0) {
                printf("Error getting temperature\n");
            }    
            printf("Temperature is -> %.2f\n", temp);
            
            //printf("Touched X %d\n\r", p.x) ;
            //printf("Touched Y %d\n\r", p.y) ;
            //printf("Touched Z %d\n\r", p.z) ;
            wait(3) ;
            if (p.z > __PRESURE) {
                if (p.y < 30000) { // left
                    decPage() ;
                } else if (p.y > 90000) { // right
                    incPage() ;
                }
                waitTouch = false ;
            }
            //tsc_cs = 1 ;
        } 
        while(waitTouch != false) ;
        //wait(1) ;
    }
}