Library to control a Graphics TFT connected to 4-wire SPI - revised for the Raio RA8875 Display Controller.
Dependents: FRDM_RA8875_mPaint RA8875_Demo RA8875_KeyPadDemo SignalGenerator ... more
Fork of SPI_TFT by
See Components - RA8875 Based Display
Enhanced touch-screen support - where it previous supported both the Resistive Touch and Capacitive Touch based on the FT5206 Touch Controller, now it also has support for the GSL1680 Touch Controller.
Offline Help Manual (Windows chm)
/media/uploads/WiredHome/ra8875.zip.bin (download, rename to .zip and unzip)
Diff: RA8875_Touch.cpp
- Revision:
- 79:544eb4964795
- Parent:
- 78:faf49c381591
- Child:
- 81:01da2e34283d
--- a/RA8875_Touch.cpp Sun Dec 28 03:14:35 2014 +0000 +++ b/RA8875_Touch.cpp Sun Dec 28 19:55:16 2014 +0000 @@ -37,7 +37,7 @@ return noerror; } -unsigned char RA8875::TouchPanelRead(loc_t *x, loc_t *y) +bool RA8875::TouchPanelA2DFiltered(loc_t *x, loc_t *y) { unsigned char touchready; static int xbuf[TPBUFSIZE], ybuf[TPBUFSIZE], sample = 0; @@ -100,7 +100,7 @@ return touchready; } -unsigned char RA8875::TouchPanelReadRaw(loc_t *x, loc_t *y) +bool RA8875::TouchPanelA2DRaw(loc_t *x, loc_t *y) { unsigned char touchready; @@ -366,14 +366,14 @@ * operations to scale results by a factor of 2 or even 4. * */ -RetCode_t RA8875::TouchPanelPoint(point_t * TouchPoint) +bool RA8875::TouchPanelReadable(point_t * TouchPoint) { - RetCode_t retValue = no_touch; + bool touched = false; point_t screenpoint = {0, 0}; - if (TouchPanelRead(&screenpoint.x, &screenpoint.y)) { - retValue = touch; - if (tpMatrix.Divider != 0 ) { + if (TouchPanelA2DFiltered(&screenpoint.x, &screenpoint.y)) { + touched = true; + if (tpMatrix.Divider != 0 && TouchPoint) { /* Operation order is important since we are doing integer */ /* math. Make sure you add all terms together before */ /* dividing, so that the remainder is not rounded off */ @@ -388,10 +388,10 @@ tpMatrix.Fn ) / tpMatrix.Divider ; } else { - retValue = bad_parameter ; + touched = false; } } - return( retValue ); + return touched; }