A general demonstration color etch-a-sketch program using the QVGA TFT with HX8347D controller, Orange Board. Saves touchscreen calibaration data saved in tft.ini. Creates /local/tft.ini if missing. Also included is an Ethernet NTP client to update the RTC. Assumes all other Orange Board devices attached: Text LCD, SDHC Flash, Ethernet.
Dependencies: EthernetNetIf TextLCD mbed
Touch_tft/touch_tft.h@0:e065ca40f28a, 2011-08-01 (annotated)
- Committer:
- loopsva
- Date:
- Mon Aug 01 16:29:58 2011 +0000
- Revision:
- 0:e065ca40f28a
Inititial Release
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
loopsva | 0:e065ca40f28a | 1 | /* mbed library for touchscreen connected to 4 mbed pins |
loopsva | 0:e065ca40f28a | 2 | * derive from SPI_TFT lib |
loopsva | 0:e065ca40f28a | 3 | * Copyright (c) 2011 Peter Drescher - DC2PD |
loopsva | 0:e065ca40f28a | 4 | * |
loopsva | 0:e065ca40f28a | 5 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
loopsva | 0:e065ca40f28a | 6 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
loopsva | 0:e065ca40f28a | 7 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
loopsva | 0:e065ca40f28a | 8 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
loopsva | 0:e065ca40f28a | 9 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
loopsva | 0:e065ca40f28a | 10 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
loopsva | 0:e065ca40f28a | 11 | * THE SOFTWARE. |
loopsva | 0:e065ca40f28a | 12 | */ |
loopsva | 0:e065ca40f28a | 13 | |
loopsva | 0:e065ca40f28a | 14 | #ifndef MBED_TOUCH_H |
loopsva | 0:e065ca40f28a | 15 | #define MBED_TOUCH_H |
loopsva | 0:e065ca40f28a | 16 | |
loopsva | 0:e065ca40f28a | 17 | #include "mbed.h" |
loopsva | 0:e065ca40f28a | 18 | #include "SPI_TFT.h" |
loopsva | 0:e065ca40f28a | 19 | |
loopsva | 0:e065ca40f28a | 20 | struct point{ |
loopsva | 0:e065ca40f28a | 21 | unsigned short x; |
loopsva | 0:e065ca40f28a | 22 | unsigned short y; |
loopsva | 0:e065ca40f28a | 23 | }; |
loopsva | 0:e065ca40f28a | 24 | |
loopsva | 0:e065ca40f28a | 25 | |
loopsva | 0:e065ca40f28a | 26 | /** touchscreen control class, based on SPI_TFT |
loopsva | 0:e065ca40f28a | 27 | * |
loopsva | 0:e065ca40f28a | 28 | * Example: |
loopsva | 0:e065ca40f28a | 29 | * @code |
loopsva | 0:e065ca40f28a | 30 | * |
loopsva | 0:e065ca40f28a | 31 | * #include "mbed.h" |
loopsva | 0:e065ca40f28a | 32 | * #include "SPI_TFT.h" |
loopsva | 0:e065ca40f28a | 33 | * #include "Arial12x12.h" |
loopsva | 0:e065ca40f28a | 34 | * #include "Arial28x28.h" |
loopsva | 0:e065ca40f28a | 35 | * #include "touch_tft.h" |
loopsva | 0:e065ca40f28a | 36 | * // the TFT is connected to SPI pin 5-7 |
loopsva | 0:e065ca40f28a | 37 | * // the touch is connected to 19,20,16,17 |
loopsva | 0:e065ca40f28a | 38 | * |
loopsva | 0:e065ca40f28a | 39 | * touch_tft tt(p19,p20,p16,p17,p5, p6, p7, p8, p15,"TFT"); // x+,x-,y+,y-,mosi, miso, sclk, cs, reset |
loopsva | 0:e065ca40f28a | 40 | * |
loopsva | 0:e065ca40f28a | 41 | * int main() { |
loopsva | 0:e065ca40f28a | 42 | * point p; |
loopsva | 0:e065ca40f28a | 43 | * |
loopsva | 0:e065ca40f28a | 44 | * tt.claim(stdout); // send stdout to the TFT display |
loopsva | 0:e065ca40f28a | 45 | * tt.background(Black); // set background to black |
loopsva | 0:e065ca40f28a | 46 | * tt.foreground(White); // set chars to white |
loopsva | 0:e065ca40f28a | 47 | * tt.cls(); // clear the screen |
loopsva | 0:e065ca40f28a | 48 | * tt.set_font((unsigned char*) Arial12x12); // select the font |
loopsva | 0:e065ca40f28a | 49 | * tt.set_orientation(1); |
loopsva | 0:e065ca40f28a | 50 | * |
loopsva | 0:e065ca40f28a | 51 | * tt.calibrate(); // calibrate the touch |
loopsva | 0:e065ca40f28a | 52 | * while (1) { |
loopsva | 0:e065ca40f28a | 53 | * p = tt.get_touch(); // read analog pos. |
loopsva | 0:e065ca40f28a | 54 | * if (tt.is_touched(p)) { // test if touched |
loopsva | 0:e065ca40f28a | 55 | * p = tt.to_pixel(p); // convert to pixel pos |
loopsva | 0:e065ca40f28a | 56 | * tt.fillcircle(p.x,p.y,3,Blue); // print a blue dot on the screen |
loopsva | 0:e065ca40f28a | 57 | * } |
loopsva | 0:e065ca40f28a | 58 | * } |
loopsva | 0:e065ca40f28a | 59 | * @endcode |
loopsva | 0:e065ca40f28a | 60 | */ |
loopsva | 0:e065ca40f28a | 61 | class touch_tft : public SPI_TFT{ |
loopsva | 0:e065ca40f28a | 62 | public: |
loopsva | 0:e065ca40f28a | 63 | /** create a TFT with touch object connected to the pins: |
loopsva | 0:e065ca40f28a | 64 | * |
loopsva | 0:e065ca40f28a | 65 | * @param pin xp resistiv touch x+ |
loopsva | 0:e065ca40f28a | 66 | * @param pin xm resistiv touch x- |
loopsva | 0:e065ca40f28a | 67 | * @param pin yp resistiv touch y+ |
loopsva | 0:e065ca40f28a | 68 | * @param pin ym resistiv touch y- |
loopsva | 0:e065ca40f28a | 69 | * @param mosi,miso,sclk SPI connection to TFT |
loopsva | 0:e065ca40f28a | 70 | * @param cs pin connected to CS of display |
loopsva | 0:e065ca40f28a | 71 | * @param reset pin connected to RESET of display |
loopsva | 0:e065ca40f28a | 72 | * based on my SPI_TFT lib |
loopsva | 0:e065ca40f28a | 73 | */ |
loopsva | 0:e065ca40f28a | 74 | touch_tft(PinName xp, PinName xm, PinName yp, PinName ym,PinName mosi, PinName miso, PinName sclk, PinName cs, PinName reset,const char* name ="TFT"); |
loopsva | 0:e065ca40f28a | 75 | |
loopsva | 0:e065ca40f28a | 76 | /** calibrate the touch display |
loopsva | 0:e065ca40f28a | 77 | * |
loopsva | 0:e065ca40f28a | 78 | * User is asked to touch on two points on the screen |
loopsva | 0:e065ca40f28a | 79 | */ |
loopsva | 0:e065ca40f28a | 80 | void calibrate(void); |
loopsva | 0:e065ca40f28a | 81 | |
loopsva | 0:e065ca40f28a | 82 | /** read x and y analog samples |
loopsva | 0:e065ca40f28a | 83 | * |
loopsva | 0:e065ca40f28a | 84 | * @returns point(x,y) |
loopsva | 0:e065ca40f28a | 85 | */ |
loopsva | 0:e065ca40f28a | 86 | point get_touch(void); |
loopsva | 0:e065ca40f28a | 87 | |
loopsva | 0:e065ca40f28a | 88 | /** calculate coord on screen |
loopsva | 0:e065ca40f28a | 89 | * |
loopsva | 0:e065ca40f28a | 90 | * @param a_point point(analog x, analog y) |
loopsva | 0:e065ca40f28a | 91 | * @returns point(pixel x, pixel y) |
loopsva | 0:e065ca40f28a | 92 | * |
loopsva | 0:e065ca40f28a | 93 | */ |
loopsva | 0:e065ca40f28a | 94 | point to_pixel(point a_point); |
loopsva | 0:e065ca40f28a | 95 | |
loopsva | 0:e065ca40f28a | 96 | /** test if screen is touched |
loopsva | 0:e065ca40f28a | 97 | * |
loopsva | 0:e065ca40f28a | 98 | * @param point analog x,y |
loopsva | 0:e065ca40f28a | 99 | * @returns true is touched |
loopsva | 0:e065ca40f28a | 100 | * |
loopsva | 0:e065ca40f28a | 101 | */ |
loopsva | 0:e065ca40f28a | 102 | bool is_touched(point a); |
loopsva | 0:e065ca40f28a | 103 | |
loopsva | 0:e065ca40f28a | 104 | // kb adds \/ \/ \/ |
loopsva | 0:e065ca40f28a | 105 | // unsigned short pp_txxx, pp_tyyy; |
loopsva | 0:e065ca40f28a | 106 | // unsigned short xxx_off,yyy_off; |
loopsva | 0:e065ca40f28a | 107 | unsigned short getCalDataX(); |
loopsva | 0:e065ca40f28a | 108 | unsigned short getCalDataY(); |
loopsva | 0:e065ca40f28a | 109 | unsigned short getCalOffX(); |
loopsva | 0:e065ca40f28a | 110 | unsigned short getCalOffY(); |
loopsva | 0:e065ca40f28a | 111 | void setCalDataX(unsigned short pp_txx); |
loopsva | 0:e065ca40f28a | 112 | void setCalDataY(unsigned short pp_tyy); |
loopsva | 0:e065ca40f28a | 113 | void setCalOffX(unsigned short xx_off); |
loopsva | 0:e065ca40f28a | 114 | void setCalOffY(unsigned short yy_off); |
loopsva | 0:e065ca40f28a | 115 | // kb adds /\ /\ /\ |
loopsva | 0:e065ca40f28a | 116 | |
loopsva | 0:e065ca40f28a | 117 | protected: |
loopsva | 0:e065ca40f28a | 118 | DigitalInOut _xp; |
loopsva | 0:e065ca40f28a | 119 | DigitalInOut _xm; |
loopsva | 0:e065ca40f28a | 120 | DigitalInOut _yp; |
loopsva | 0:e065ca40f28a | 121 | DigitalInOut _ym; |
loopsva | 0:e065ca40f28a | 122 | AnalogIn _ax; |
loopsva | 0:e065ca40f28a | 123 | AnalogIn _ay; |
loopsva | 0:e065ca40f28a | 124 | PinName xa; |
loopsva | 0:e065ca40f28a | 125 | PinName ya; |
loopsva | 0:e065ca40f28a | 126 | |
loopsva | 0:e065ca40f28a | 127 | |
loopsva | 0:e065ca40f28a | 128 | unsigned short x_a,y_a; |
loopsva | 0:e065ca40f28a | 129 | unsigned short x_off,y_off; |
loopsva | 0:e065ca40f28a | 130 | unsigned short pp_tx,pp_ty; |
loopsva | 0:e065ca40f28a | 131 | |
loopsva | 0:e065ca40f28a | 132 | // unsigned short pp_txx, pp_tyy; |
loopsva | 0:e065ca40f28a | 133 | |
loopsva | 0:e065ca40f28a | 134 | |
loopsva | 0:e065ca40f28a | 135 | |
loopsva | 0:e065ca40f28a | 136 | }; |
loopsva | 0:e065ca40f28a | 137 | |
loopsva | 0:e065ca40f28a | 138 | #endif |