main.cpp

00001 /** TS_Eyes TSI sample program using Adafruit 2.8" TFT with Touch
00002  *
00003  * @note Just like the good old X11 eyes
00004  * @note this program stares at the point where
00005  * @note the TSI sensor of FRDM is being touched.
00006  * @note By touching the right most side of the sensor
00007  * @note program exits the staring loop and pretend to sleep.
00008  * @note Then touching the TFT starts the staring loop again.
00009  */
00010  
00011  /* 
00012   * Note: This program is derived from the SeeeStudioTFTv2 program.
00013   * Although both program share same ILI9341 TFT driver,
00014   * the touch sensor was not same with the Display I purchased from Akizuki.
00015   * http://akizukidenshi.com/catalog/g/gM-07747/
00016   * The touch sensor on the display is STMPE610,
00017   * so I hacked the minimum spi driver for it (polling mode only).
00018   */
00019 
00020 #include "mbed.h"
00021 #include "TSISensor.h"
00022 #include "SPI_TFT_ILI9341.h"
00023 #include "SPI_STMPE610.h"
00024 #include "Arial12x12.h"
00025 #include "Arial24x23.h"
00026 #include "Arial28x28.h"
00027 #include "font_big.h"
00028 
00029 #define PIN_MOSI        PTD2
00030 #define PIN_MISO        PTD3 
00031 #define PIN_SCLK        PTD1 
00032 #define PIN_CS_TFT      PTD0 
00033 #define PIN_DC_TFT      PTD5 
00034 #define PIN_BL_TFT      PTC9 
00035 #define PIN_CS_SD       PTA4 
00036 #define PIN_CS_TSC      PTA13
00037 #define PIN_TSC_INTR    PTC9
00038 
00039 TSISensor tsi;
00040 
00041 SPI_TFT_ILI9341 TFT(PIN_MOSI, PIN_MISO, PIN_SCLK, PIN_CS_TFT, PIN_BL_TFT, PIN_DC_TFT) ;
00042 SPI_STMPE610 TSC(PIN_MOSI, PIN_MISO, PIN_SCLK, PIN_CS_TSC) ;
00043 
00044 DigitalOut backlight(PTA12) ;
00045 
00046 void initTFT(void)
00047 {
00048     //Configure the display driver
00049     TFT.background(Black);
00050     TFT.foreground(White);
00051     wait(0.01) ;
00052     TFT.cls();
00053 }
00054 
00055 void moveEyes(void)
00056 {
00057     int dx, px ;
00058     float delta = 0.0 ;
00059     dx = 0 ;
00060     px = 0 ;
00061     backlight = 0 ;
00062     TFT.background(Black);
00063     wait(0.1) ;
00064     TFT.foreground(White);
00065     wait(0.1) ;
00066     TFT.cls() ;
00067     wait(0.1) ;
00068 
00069     TFT.set_font((unsigned char*) Arial12x12);
00070     TFT.foreground(Blue) ;
00071     TFT.locate(60, 10) ;
00072     TFT.printf("<< TS Eyes >>") ;
00073     TFT.locate(30, 280) ;
00074     TFT.printf("Use FRDM touch slider") ;
00075     TFT.locate(30, 300) ;
00076     TFT.printf("Touch right edge to end") ;
00077     
00078     TFT.fillcircle(120, 160, 100, Green) ;
00079     TFT.fillcircle(60, 160, 50, Black) ;
00080     TFT.fillcircle(60, 160, 45, White) ;
00081     TFT.fillcircle(180, 160, 50, Black) ;
00082     TFT.fillcircle(180, 160, 45, White) ;
00083     TFT.fillcircle(60, 160, 5, Black) ;
00084     TFT.fillcircle(180, 160, 5, Black) ;
00085     backlight = 1 ;
00086 
00087     while(dx < 38) {
00088       delta = (80.0 * (tsi.readPercentage()-0.5)) ;
00089       dx = (int)(delta + 0.5) ;
00090       TFT.fillcircle(60+px, 160, 5, White) ;
00091       TFT.fillcircle(180+px, 160, 5, White) ;
00092       TFT.fillcircle(60+dx, 160, 5, Black) ;
00093       TFT.fillcircle(180+dx, 160, 5, Black) ;
00094       px = dx ;
00095       wait(0.1) ;
00096     }
00097     TFT.fillcircle(60+px, 160, 5, White) ;
00098     TFT.fillcircle(180+px, 160, 5, White) ;
00099     TFT.line(15, 160, 105, 160, Black) ;
00100     TFT.line(135, 160, 225, 160, Black) ;
00101     TFT.locate(30, 280) ;
00102     TFT.printf("    Sleeping ... zzz     ") ;
00103     TFT.locate(20, 300) ;
00104     TFT.foreground(Yellow) ;
00105     TFT.printf("  Touch TFT to wake up") ;
00106 }
00107     
00108 int main()
00109 {
00110     uint16_t x, y, z ;
00111     bool awake = true ;
00112     
00113     initTFT() ;
00114     
00115     for(;;) {
00116 
00117         if (awake) {
00118             moveEyes() ;
00119             awake = false ;
00120         }
00121         
00122         if ( TSC.getRAWPoint(&x, &y, &z)) {
00123             awake = true ;
00124         }
00125         
00126     }
00127 }