Darren Ulrich / Mbed 2 deprecated Bicycl_Computer_NUCLEO-F411RE Featured

This is a fork of a functional ILI9341 display with a functional Seeed touch screen library.

Dependencies:   BMP180 UniGraphic mbed BNO055_fusionI_fixed HTU21D GPSISR Compass Fonts uGUI

Fork of TFT_test_NUCLEO-F411RE by Motoo Tanaka

/media/uploads/trevieze/win_20170427_21_31_20_pro.jpg

Had to move sensors to a remote board because of interference. Added spi burst mode to supported displays.

To do.... ugui buttons are slow. will need to add rtos to project. Finish other way points screen. Will have to rewrite portions of the touch screen class. Sense touch, delay, read values and then average, touch released, is the sequence. Add cadence input and logic to program for computer screen.

SeeedStudioTFTv2.cpp@21:39ef2fd5c4bf, 2018-05-16 (annotated)

Committer:
trevieze
Date:
Wed May 16 18:50:19 2018 +0000
Revision:
21:39ef2fd5c4bf
Parent:
20:3ada4387cc1b
Child:
22:39a8e5c47f3c
Adding averaging to touchscreen analog data. See if it functions better.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
trevieze 2:c5085faf2aa5 1 /* mbed library for resistive touch pads
trevieze 2:c5085faf2aa5 2 * uses 4 pins - 2 IO and 2 Analog
trevieze 2:c5085faf2aa5 3
trevieze 2:c5085faf2aa5 4 * c 2011 Peter Drescher - DC2PD
trevieze 2:c5085faf2aa5 5 *
trevieze 2:c5085faf2aa5 6 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
trevieze 2:c5085faf2aa5 7 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
trevieze 2:c5085faf2aa5 8 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
trevieze 2:c5085faf2aa5 9 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
trevieze 2:c5085faf2aa5 10 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
trevieze 2:c5085faf2aa5 11 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
trevieze 2:c5085faf2aa5 12 * THE SOFTWARE.
trevieze 2:c5085faf2aa5 13 */
trevieze 2:c5085faf2aa5 14
trevieze 2:c5085faf2aa5 15
trevieze 2:c5085faf2aa5 16 #include "mbed.h"
trevieze 2:c5085faf2aa5 17 #include "SeeedStudioTFTv2.h"
trevieze 2:c5085faf2aa5 18
trevieze 20:3ada4387cc1b 19 //Serial pc(USBTX,USBRX,19200);
trevieze 2:c5085faf2aa5 20
trevieze 2:c5085faf2aa5 21 TouchScreen::TouchScreen(PinName xp, PinName xm, PinName yp, PinName ym)
trevieze 2:c5085faf2aa5 22 {
trevieze 2:c5085faf2aa5 23 //font = NULL;
trevieze 2:c5085faf2aa5 24 // touch screen pins
trevieze 2:c5085faf2aa5 25 _xp = xp;
trevieze 2:c5085faf2aa5 26 _yp = yp;
trevieze 2:c5085faf2aa5 27 _xm = xm;
trevieze 2:c5085faf2aa5 28 _ym = ym;
trevieze 2:c5085faf2aa5 29 // default touch calibration
trevieze 2:c5085faf2aa5 30 // orientation // 0 1 2 3
trevieze 2:c5085faf2aa5 31 x_off = 108000; // 17252 16605 108755 108000
trevieze 2:c5085faf2aa5 32 y_off = 22000; // 22330 105819 97167 22000
trevieze 2:c5085faf2aa5 33 pp_tx = -291; // 378 289 -390 -291
trevieze 2:c5085faf2aa5 34 pp_ty = 356; // 261 -355 -239 356
trevieze 2:c5085faf2aa5 35 }
trevieze 2:c5085faf2aa5 36
trevieze 2:c5085faf2aa5 37 int TouchScreen::readTouch(PinName p, PinName m, PinName a, PinName i)
trevieze 2:c5085faf2aa5 38 {
trevieze 21:39ef2fd5c4bf 39 int n, avg;
trevieze 21:39ef2fd5c4bf 40 // Setup analog ports to read X and Y touch values on display.
trevieze 2:c5085faf2aa5 41 DigitalOut _p(p);
trevieze 2:c5085faf2aa5 42 _p = 1;
trevieze 2:c5085faf2aa5 43 DigitalOut _m(m);
trevieze 2:c5085faf2aa5 44 _m = 0;
trevieze 2:c5085faf2aa5 45 AnalogIn _a(a);
trevieze 2:c5085faf2aa5 46 AnalogIn _i(i); // this pin has to be high Z (DigitalIn may also work)
trevieze 21:39ef2fd5c4bf 47
trevieze 21:39ef2fd5c4bf 48 // Put averaging solution here. Take n samples then average.
trevieze 21:39ef2fd5c4bf 49 n=5000;
trevieze 21:39ef2fd5c4bf 50 for (int j=0; i<n; j++) {
trevieze 21:39ef2fd5c4bf 51
trevieze 21:39ef2fd5c4bf 52 avg = avg + _a.read_u16();
trevieze 21:39ef2fd5c4bf 53 }
trevieze 21:39ef2fd5c4bf 54 avg=avg/n;
trevieze 21:39ef2fd5c4bf 55
trevieze 2:c5085faf2aa5 56 wait_us(10);
trevieze 21:39ef2fd5c4bf 57 //return _a.read_u16();
trevieze 21:39ef2fd5c4bf 58 return avg;
trevieze 2:c5085faf2aa5 59 }
trevieze 2:c5085faf2aa5 60
trevieze 2:c5085faf2aa5 61 void TouchScreen :: getTouch(point& p)
trevieze 2:c5085faf2aa5 62 {
trevieze 14:b174ec6e3ca0 63 volatile int y2 = readTouch(_xp,_xm,_yp,_ym);
trevieze 14:b174ec6e3ca0 64 volatile int x2 = readTouch(_yp,_ym,_xp,_xm);
trevieze 14:b174ec6e3ca0 65 volatile int y1 = readTouch(_xp,_xm,_yp,_ym);
trevieze 14:b174ec6e3ca0 66 volatile int x1 = readTouch(_yp,_ym,_xp,_xm);
trevieze 2:c5085faf2aa5 67 int xd = x1 - x2;
trevieze 2:c5085faf2aa5 68 int yd = y1 - y2;
trevieze 2:c5085faf2aa5 69 xd = (xd > 0) ? xd : -xd;
trevieze 2:c5085faf2aa5 70 yd = (yd > 0) ? xd : -xd;
trevieze 14:b174ec6e3ca0 71 p.y = x1 + x2;
trevieze 14:b174ec6e3ca0 72 p.x = y1 + y2;
trevieze 14:b174ec6e3ca0 73
trevieze 2:c5085faf2aa5 74 int z1 = _xm;
trevieze 2:c5085faf2aa5 75 int z2 = _yp;
trevieze 2:c5085faf2aa5 76 float rtouch = 0;
trevieze 2:c5085faf2aa5 77
trevieze 2:c5085faf2aa5 78 rtouch = z2;
trevieze 2:c5085faf2aa5 79 rtouch /= z1;
trevieze 2:c5085faf2aa5 80 rtouch -= 1;
trevieze 14:b174ec6e3ca0 81 rtouch *= (4094-p.x)/2;
trevieze 2:c5085faf2aa5 82 rtouch *= RXPLATE;
trevieze 14:b174ec6e3ca0 83 rtouch /= 2048;
trevieze 14:b174ec6e3ca0 84 p.x = map(p.x, TS_MINX, TS_MAXX, 0, 240);
trevieze 14:b174ec6e3ca0 85 p.y = map(p.y, TS_MINY, TS_MAXY, 0, 320);
trevieze 14:b174ec6e3ca0 86 p.z = abs(rtouch);
trevieze 14:b174ec6e3ca0 87 }
trevieze 14:b174ec6e3ca0 88
trevieze 14:b174ec6e3ca0 89 long TouchScreen :: map(long x, long in_min, long in_max, long out_min, long out_max)
trevieze 14:b174ec6e3ca0 90 {
trevieze 14:b174ec6e3ca0 91 return (x - in_min) * (out_max - out_min) / (in_max - in_min) + out_min;
trevieze 14:b174ec6e3ca0 92 }