David Smart / RA8875 Featured

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 Peter Drescher

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:
181:0032d1b8f5d4
Parent:
178:ae472eb22740
Child:
183:808f272e481e
--- a/RA8875_Touch.cpp	Thu Aug 01 22:35:29 2019 +0000
+++ b/RA8875_Touch.cpp	Fri Aug 02 02:12:26 2019 +0000
@@ -69,7 +69,7 @@
         touchSample = 0;
         touchState = no_cal;
         //touchTicker.attach_us(callback(this, &RA8875::_TouchTicker), TOUCH_TICKER_uS);
-        #if (MBED_MAJOR_VERSION >= 5) || (MBED_LIBRARY_VERSION > 128)   // Is this the right version?
+        #if (MBED_MAJOR_VERSION >= 5) || (MBED_LIBRARY_VERSION > 127)
         touchTicker.attach_us(callback(this, &RA8875::_TouchTicker), TOUCH_TICKER_uS);
         #else
         touchTicker.attach_us(this, &RA8875::_TouchTicker, TOUCH_TICKER_uS);
@@ -113,7 +113,7 @@
         touchState = no_cal;
         if (bTpEnable == TP_ENABLE) {
             //touchTicker.attach_us(callback(this, &RA8875::_TouchTicker), TOUCH_TICKER_uS);
-            #if (MBED_MAJOR_VERSION >= 5) || (MBED_LIBRARY_VERSION > 128)   // Is this the right version?
+            #if (MBED_MAJOR_VERSION >= 5) || (MBED_LIBRARY_VERSION > 127)
             touchTicker.attach_us(callback(this, &RA8875::_TouchTicker), TOUCH_TICKER_uS);
             #else
             touchTicker.attach_us(this, &RA8875::_TouchTicker, TOUCH_TICKER_uS);
@@ -334,7 +334,7 @@
     if (panelTouched == true) {
         panelTouched = false;
         if (TouchPoint) {
-            *TouchPoint = touchInfo[0].coordinates;
+            *TouchPoint = TranslateOrientation(touchInfo[0].coordinates);
             ts = touchInfo[0].touchCode;
             INFO("Touch[0] %2d (%4d,%4d)", touchInfo[0].touchCode,
                 touchInfo[0].coordinates.x, touchInfo[0].coordinates.y);
@@ -356,14 +356,15 @@
 { 
     if (channel >= TouchChannels())
         channel = 0;
-    return touchInfo[channel].touchCode; 
+    INFO("TouchCode[%d] = %d", channel, touchInfo[channel].touchCode);
+    return touchInfo[channel].touchCode;
 }
 
 point_t RA8875::TouchCoordinates(uint8_t channel)
 {
     if (channel >= TouchChannels())
         channel = 0;
-    return touchInfo[channel].coordinates; 
+    return TranslateOrientation(touchInfo[channel].coordinates); 
 }
 
 TouchCode_t RA8875::TouchPanelGet(point_t * TouchPoint)
@@ -383,6 +384,35 @@
     return t;
 }
 
+point_t RA8875::TranslateOrientation(point_t rawPoint)
+{
+    point_t newPoint = rawPoint;
+    
+    #if 0
+    switch (screen_orientation) {
+        default:
+        case rotate_0:
+            newPoint = rawPoint;
+            break;
+        case rotate_90:
+            newPoint.x = rawPoint.y;
+            newPoint.y = height() - rawPoint.x;
+            break;
+        case rotate_180:
+            newPoint.x = width() - rawPoint.x;
+            newPoint.y = height() - rawPoint.y;
+            break;
+        case rotate_270:
+            newPoint.x = height() - rawPoint.y;
+            newPoint.y = rawPoint.x;
+            break;
+    }
+    INFO("Translate(%3d x %3d) => (%3d x %3d)", rawPoint.x, rawPoint.y, newPoint.x, newPoint.y);
+    #endif
+    return newPoint;
+}
+
+
 // Below here are primarily "helper" functions. While many are accessible
 // to the user code, they usually don't need to be called.
 
@@ -784,7 +814,7 @@
     
     m_i2c->write(m_addr, (const char *)&reg, 1);
     m_i2c->read(m_addr, &val, 1);
-    HexDump("FT5206_Read", (uint8_t *)&val, 1);
+    //INFO("ReadReg %02X, Val %02X", reg, val);
     return (uint8_t)val;
 }