Darren Ulrich
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
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.
Diff: SeeedStudioTFTv2.cpp
- Revision:
- 2:c5085faf2aa5
- Child:
- 14:b174ec6e3ca0
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/SeeedStudioTFTv2.cpp Sat Dec 17 18:55:31 2016 +0000
@@ -0,0 +1,73 @@
+/* mbed library for resistive touch pads
+ * uses 4 pins - 2 IO and 2 Analog
+
+ * c 2011 Peter Drescher - DC2PD
+ *
+ * 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.
+ */
+
+
+#include "mbed.h"
+#include "SeeedStudioTFTv2.h"
+
+//Serial pc(USBTX,USBRX,19200);
+
+TouchScreen::TouchScreen(PinName xp, PinName xm, PinName yp, PinName ym)
+{
+ //font = NULL;
+ // touch screen pins
+ _xp = xp;
+ _yp = yp;
+ _xm = xm;
+ _ym = ym;
+ // default touch calibration
+ // orientation // 0 1 2 3
+ x_off = 108000; // 17252 16605 108755 108000
+ y_off = 22000; // 22330 105819 97167 22000
+ pp_tx = -291; // 378 289 -390 -291
+ pp_ty = 356; // 261 -355 -239 356
+}
+
+int TouchScreen::readTouch(PinName p, PinName m, PinName a, PinName i)
+{
+ DigitalOut _p(p);
+ _p = 1;
+ DigitalOut _m(m);
+ _m = 0;
+ AnalogIn _a(a);
+ AnalogIn _i(i); // this pin has to be high Z (DigitalIn may also work)
+ wait_us(10);
+ return _a.read_u16();
+}
+
+void TouchScreen :: getTouch(point& p)
+{
+ int y2 = readTouch(_xp,_xm,_yp,_ym);
+ int x2 = readTouch(_yp,_ym,_xp,_xm);
+ int y1 = readTouch(_xp,_xm,_yp,_ym);
+ int x1 = readTouch(_yp,_ym,_xp,_xm);
+ int xd = x1 - x2;
+ int yd = y1 - y2;
+ xd = (xd > 0) ? xd : -xd;
+ yd = (yd > 0) ? xd : -xd;
+ p.x = x1 + x2;
+ p.y = y1 + y2;
+
+ int z1 = _xm;
+ int z2 = _yp;
+ float rtouch = 0;
+
+ rtouch = z2;
+ rtouch /= z1;
+ rtouch -= 1;
+ rtouch *= (2046-p.x)/2;
+ rtouch *= RXPLATE;
+ rtouch /= 1024;
+ p.z = abs(rtouch);
+ }
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