Revision 0:7f5765fcd048, committed 2015-07-14

Comitter:

embeddedartists

Date:

Tue Jul 14 11:34:15 2015 +0000

Commit message:

First version

Changed in this revision

diff -r 000000000000 -r 7f5765fcd048 AR1021I2C.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/AR1021I2C.cpp	Tue Jul 14 11:34:15 2015 +0000
@@ -0,0 +1,562 @@
+/*
+ *  Copyright 2013 Embedded Artists AB
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+
+/******************************************************************************
+ * Includes
+ *****************************************************************************/
+
+#include "mbed.h"
+#include "mbed_debug.h"
+
+#include "AR1021I2C.h"
+
+/******************************************************************************
+ * Defines and typedefs
+ *****************************************************************************/
+
+#define AR1021_REG_TOUCH_THRESHOLD        (0x02)
+#define AR1021_REG_SENS_FILTER            (0x03)
+#define AR1021_REG_SAMPLING_FAST          (0x04)
+#define AR1021_REG_SAMPLING_SLOW          (0x05)
+#define AR1021_REG_ACC_FILTER_FAST        (0x06)
+#define AR1021_REG_ACC_FILTER_SLOW        (0x07)
+#define AR1021_REG_SPEED_THRESHOLD        (0x08)
+#define AR1021_REG_SLEEP_DELAY            (0x0A)
+#define AR1021_REG_PEN_UP_DELAY           (0x0B)
+#define AR1021_REG_TOUCH_MODE             (0x0C)
+#define AR1021_REG_TOUCH_OPTIONS          (0x0D)
+#define AR1021_REG_CALIB_INSETS           (0x0E)
+#define AR1021_REG_PEN_STATE_REPORT_DELAY (0x0F)
+#define AR1021_REG_TOUCH_REPORT_DELAY     (0x11)
+
+
+#define AR1021_CMD_GET_VERSION                 (0x10)
+#define AR1021_CMD_ENABLE_TOUCH                (0x12)
+#define AR1021_CMD_DISABLE_TOUCH               (0x13)
+#define AR1021_CMD_CALIBRATE_MODE              (0x14)
+#define AR1021_CMD_REGISTER_READ               (0x20)
+#define AR1021_CMD_REGISTER_WRITE              (0x21)
+#define AR1021_CMD_REGISTER_START_ADDR_REQUEST (0x22)
+#define AR1021_CMD_REGISTER_WRITE_TO_EEPROM    (0x23)
+#define AR1021_CMD_EEPROM_READ                 (0x28)
+#define AR1021_CMD_EEPROM_WRITE                (0x29)
+#define AR1021_CMD_EEPROM_WRITE_TO_REGISTERS   (0x2B)
+
+#define AR1021_RESP_STAT_OK           (0x00)
+#define AR1021_RESP_STAT_CMD_UNREC    (0x01)
+#define AR1021_RESP_STAT_HDR_UNREC    (0x03)
+#define AR1021_RESP_STAT_TIMEOUT      (0x04)
+#define AR1021_RESP_STAT_CANCEL_CALIB (0xFC)
+
+
+#define AR1021_ERR_NO_HDR      (-1000)
+#define AR1021_ERR_INV_LEN     (-1001)
+#define AR1021_ERR_INV_RESP    (-1002)
+#define AR1021_ERR_INV_RESPLEN (-1003)
+#define AR1021_ERR_TIMEOUT     (-1004)
+
+// bit 7 is always 1 and bit 0 defines pen up or down
+#define AR1021_PEN_MASK (0x81)
+
+#define AR1021_NUM_CALIB_POINTS (4)
+
+#define AR1021_ADDR  (0x4D << 1)
+
+#define AR1021_TIMEOUT     1000        //how many ms to wait for responce 
+#define AR1021_RETRY          5        //how many times to retry sending command 
+
+#define AR1021_MIN(__a, __b) (((__a)<(__b))?(__a):(__b))
+
+
+AR1021I2C::AR1021I2C(PinName sda, PinName scl, PinName siq) :
+_i2c(sda, scl), _siq(siq), _siqIrq(siq)
+{
+    _i2c.frequency(200000);
+
+    // default calibration inset is 25 -> (25/2 = 12.5%)
+    _inset = 25;
+
+    // make sure _calibPoint has an invalid value to begin with
+    // correct value is set in calibrateStart()
+    _calibPoint = AR1021_NUM_CALIB_POINTS+1;
+
+    _x = 0;
+    _y = 0;
+    _pen = 0;
+
+    _initialized = false;
+}
+
+
+bool AR1021I2C::read(touchCoordinate_t &coord) {
+
+    if (!_initialized) return false;
+
+    coord.x = _x * _width/4095;
+    coord.y = _y * _height/4095;
+    coord.z = _pen;
+
+    return true;
+}
+
+
+bool AR1021I2C::init(uint16_t width, uint16_t height) {
+    int result = 0;
+    bool ok = false;
+    int attempts = 0;
+
+    _width = width;
+    _height = height;
+
+    while (1) {
+
+        do {
+            // disable touch
+            result = cmd(AR1021_CMD_DISABLE_TOUCH, NULL, 0, NULL, 0);
+            if (result != 0) {
+                debug("disable touch failed (%d)\n", result);
+                break;
+            }
+
+            char regOffset = 0;
+            int regOffLen = 1;
+            result = cmd(AR1021_CMD_REGISTER_START_ADDR_REQUEST, NULL, 0,
+                    &regOffset, &regOffLen);
+            if (result != 0) {
+                debug("register offset request failed (%d)\n", result);
+                break;
+            }
+
+            // enable calibrated coordinates
+            //                  high, low address,                        len,  value
+            char toptions[4] = {0x00, AR1021_REG_TOUCH_OPTIONS+regOffset, 0x01, 0x01};
+            result = cmd(AR1021_CMD_REGISTER_WRITE, toptions, 4, NULL, 0);
+            if (result != 0) {
+                debug("register write request failed (%d)\n", result);
+                break;
+            }
+
+            // save registers to eeprom
+            result = cmd(AR1021_CMD_REGISTER_WRITE_TO_EEPROM, NULL, 0, NULL, 0);
+            if (result != 0) {
+                debug("register write to eeprom failed (%d)\n", result);
+                break;
+            }
+
+            // enable touch
+            result = cmd(AR1021_CMD_ENABLE_TOUCH, NULL, 0, NULL, 0);
+            if (result != 0) {
+                debug("enable touch failed (%d)\n", result);
+                break;
+            }
+
+            _siqIrq.rise(this, &AR1021I2C::readTouchIrq);
+
+            _initialized = true;
+            ok = true;
+
+        } while(0);
+
+        if (ok) break;
+
+        // try to run the initialize sequence at most 2 times
+        if(++attempts >= 2) break;
+    }
+
+
+    return ok;
+}
+
+bool AR1021I2C::calibrateStart() {
+    bool ok = false;
+    int result = 0;
+    int attempts = 0;
+
+    if (!_initialized) return false;
+
+    _siqIrq.rise(NULL);
+
+    while(1) {
+
+        do {
+            // disable touch
+            result = cmd(AR1021_CMD_DISABLE_TOUCH, NULL, 0, NULL, 0);
+            if (result != 0) {
+                debug("disable touch failed (%d)\n", result);
+                break;
+            }
+
+            char regOffset = 0;
+            int regOffLen = 1;
+            result = cmd(AR1021_CMD_REGISTER_START_ADDR_REQUEST, NULL, 0,
+                    &regOffset, &regOffLen);
+            if (result != 0) {
+                debug("register offset request failed (%d)\n", result);
+                break;
+            }
+
+            // set insets
+            // enable calibrated coordinates
+            //                high, low address,                       len,  value
+            char insets[4] = {0x00, AR1021_REG_CALIB_INSETS+regOffset, 0x01, _inset};
+            result = cmd(AR1021_CMD_REGISTER_WRITE, insets, 4, NULL, 0);
+            if (result != 0) {
+                debug("register write request failed (%d)\n", result);
+                break;
+            }
+
+            // calibration mode
+            char calibType = 4;
+            result = cmd(AR1021_CMD_CALIBRATE_MODE, &calibType, 1, NULL, 0, false);
+            if (result != 0) {
+                debug("calibration mode failed (%d)\n", result);
+                break;
+            }
+
+            _calibPoint = 0;
+            ok = true;
+
+        } while(0);
+
+        if (ok) break;
+
+        // try to run the calibrate mode sequence at most 2 times
+        if (++attempts >= 2) break;
+    }
+
+    return ok;
+}
+
+bool AR1021I2C::getNextCalibratePoint(uint16_t* x, uint16_t* y) {
+
+    if (!_initialized) return false;
+    if (x == NULL || y == NULL) return false;
+
+    int xInset = (_width * _inset / 100) / 2;
+    int yInset = (_height * _inset / 100) / 2;
+
+    switch(_calibPoint) {
+    case 0:
+        *x = xInset;
+        *y = yInset;
+        break;
+    case 1:
+        *x = _width - xInset;
+        *y = yInset;
+        break;
+    case 2:
+        *x = _width - xInset;
+        *y = _height - yInset;
+        break;
+    case 3:
+        *x = xInset;
+        *y = _height - yInset;
+        break;
+    default:
+        return false;
+    }
+
+    return true;
+}
+
+bool AR1021I2C::waitForCalibratePoint(bool* morePoints, uint32_t timeout) {
+    int result = 0;
+    bool ret = false;
+
+    if (!_initialized) return false;
+
+    do {
+        if (morePoints == NULL || _calibPoint >= AR1021_NUM_CALIB_POINTS) {
+            break;
+        }
+
+        // wait for response
+        result = waitForCalibResponse(timeout);
+        if (result != 0) {
+            debug("wait for calibration response failed (%d)\n", result);
+            break;
+        }
+
+        _calibPoint++;
+        *morePoints = (_calibPoint < AR1021_NUM_CALIB_POINTS);
+
+
+        // no more points -> enable touch
+        if (!(*morePoints)) {
+
+            // wait for calibration data to be written to eeprom
+            // before enabling touch
+            result = waitForCalibResponse(timeout);
+            if (result != 0) {
+                debug("wait for calibration response failed (%d)\n", result);
+                break;
+            }
+
+
+            // clear chip-select since calibration is done;
+//            _cs = 1;
+
+            result = cmd(AR1021_CMD_ENABLE_TOUCH, NULL, 0, NULL, 0);
+            if (result != 0) {
+                debug("enable touch failed (%d)\n", result);
+                break;
+            }
+
+            _siqIrq.rise(this, &AR1021I2C::readTouchIrq);
+        }
+
+        ret = true;
+
+    } while (0);
+
+
+
+    if (!ret) {
+        // make sure to set chip-select off in case of an error
+//        _cs = 1;
+        // calibration must restart if an error occurred
+        _calibPoint = AR1021_NUM_CALIB_POINTS+1;
+    }
+
+
+
+    return ret;
+}
+
+int AR1021I2C::cmd(char cmd, char* data, int len, char* respBuf, int* respLen,
+        bool setCsOff) {
+
+    int ret = 0;
+    int readLen = (respLen == NULL) ? 0 : *respLen;
+    for (int attempt = 1; attempt <= AR1021_RETRY; attempt++) {
+        if (attempt > 1) {
+            wait_ms(50);
+        }
+
+        // command request
+        // ---------------
+        // 0x00 0x55 len cmd data
+        // 0x00 = protocol command byte
+        // 0x55 = header
+        // len = data length + cmd (1)
+        // data = data to send
+
+        _i2c.start(); 
+        _i2c.write(AR1021_ADDR);                   //send write address 
+        _i2c.write(0x00); 
+        _i2c.write(0x55);                          //header 
+        _i2c.write(len+1);                         //message length 
+        _i2c.write(cmd);
+        for (int i = 0; i < len; i++) {
+            _i2c.write(data[i]);
+        }
+        wait_us(60);
+        _i2c.stop();
+     
+        // wait for response (siq goes high when response is available)
+        Timer t;
+        t.start();
+        while(_siq.read() != 1 && t.read_ms() < AR1021_TIMEOUT);
+        
+        if (t.read_ms() < AR1021_TIMEOUT) {
+        
+            // command response
+            // ---------------
+            // 0x55 len status cmd data
+            // 0x55 = header
+            // len = number of bytes following the len byte (i.e. including the status&cmd)
+            // status = status
+            // cmd = command ID
+            // data = data to receive
+            _i2c.start();
+            _i2c.write(AR1021_ADDR + 1);        //send read address 
+            char header = _i2c.read(1);         //header should always be 0x55
+            if (header != 0x55) {
+                ret = AR1021_ERR_NO_HDR;
+                continue;
+            }
+            char length = _i2c.read(1);         //data length
+            if (length < 2) {
+                ret = AR1021_ERR_INV_LEN;       //must have at least status and command bytes
+                continue;
+            }
+            length -= 2;
+            if (length > readLen) {
+                ret = AR1021_ERR_INV_LEN;       //supplied buffer is not enough
+                continue;
+            }
+
+            char status = _i2c.read(1);         //command status
+            char usedCmd;
+            if (readLen <= 0) {
+                usedCmd = _i2c.read(0);         //no data => read command byte + NACK
+            } else {
+                usedCmd = _i2c.read(1);         //which command
+
+                //we need to send a NACK on the last read. 
+                int i;
+                for (i = 0; i < (length-1); i++) {
+                    respBuf[i] = _i2c.read(1);
+                }
+                respBuf[i] = _i2c.read(0);      //last returned data byte + NACK
+            }
+            _i2c.stop();
+            
+            
+            if (status != AR1021_RESP_STAT_OK) {
+                ret = -status;
+                continue;
+            }
+            if (usedCmd != cmd) {
+                ret = AR1021_ERR_INV_RESP;
+                continue;
+            }
+            
+            // success
+            ret = 0;
+            break;
+            
+        } else {
+            ret = AR1021_ERR_TIMEOUT;
+            continue;
+        }
+    }
+
+    return ret;
+}
+
+int AR1021I2C::waitForCalibResponse(uint32_t timeout) {
+    Timer t;
+    int ret = 0;
+
+    t.start();
+
+    // wait for siq
+    while (_siq.read() != 1 &&
+            (timeout == 0 || (uint32_t)t.read_ms() < (int)timeout));
+
+
+    do {
+
+        if (timeout >  0 && (uint32_t)t.read_ms() >= timeout) {
+            ret = AR1021_ERR_TIMEOUT;
+            break;
+        }
+
+        // command response
+        // ---------------
+        // 0x55 len status cmd data
+        // 0x55 = header
+        // len = number of bytes following the len byte (should be 2)
+        // status = status
+        // cmd = command ID
+        _i2c.start();
+        _i2c.write(AR1021_ADDR + 1);        //send read address 
+        char header = _i2c.read(1);         //header should always be 0x55  
+        char length = _i2c.read(1);         //data length
+
+        if (header != 0x55) {
+            ret = AR1021_ERR_NO_HDR;
+            break;
+        }
+        if (length < 2) {
+            ret = AR1021_ERR_INV_LEN;
+            break;
+        }
+        char status = _i2c.read(1);         //status
+        char cmd    = _i2c.read(0);         //command, should be NACK'ed
+        _i2c.stop();
+        if (status != AR1021_RESP_STAT_OK) {
+            ret = -status;
+            break;
+        }
+        if (cmd != AR1021_CMD_CALIBRATE_MODE) {
+            ret = AR1021_ERR_INV_RESP;
+            break;
+        }
+        
+        // success
+        ret = 0;
+
+    } while (0);
+
+    return ret;
+}
+
+
+void AR1021I2C::readTouchIrq() {
+    while(_siq.read() == 1) {
+
+        // touch coordinates are sent in a 5-byte data packet
+        _i2c.start();
+        _i2c.write(AR1021_ADDR + 1);        //send read address 
+        int pen = _i2c.read(1);
+        int xlo = _i2c.read(1);
+        int xhi = _i2c.read(1);
+        int ylo = _i2c.read(1);
+        int yhi = _i2c.read(0);
+        _i2c.stop();
+        
+        // pen down
+        if ((pen&AR1021_PEN_MASK) == (1<<7|1<<0)) {
+            _pen = 1;
+        }
+        // pen up
+        else if ((pen&AR1021_PEN_MASK) == (1<<7)){
+            _pen = 0;
+        }
+        // invalid value
+        else {
+            continue;
+        }
+
+        _x = ((xhi<<7)|xlo);
+        _y = ((yhi<<7)|ylo);
+    }
+}
+
+bool AR1021I2C::info(int* verHigh, int* verLow, int* resBits, int* type)
+{
+    char buff[3] = {0,0,0};
+    int read = 3;
+    int res = cmd(AR1021_CMD_GET_VERSION, NULL, 0, buff, &read);
+    if (res == 0) {
+        *verHigh = buff[0];
+        *verLow = buff[1];
+        switch(buff[2] & 3) {
+            case 0:   
+                *resBits = 8;
+                break;
+            case 1:   
+                *resBits = 10;
+                break;
+            case 2:   
+                *resBits = 12;
+                break;
+            case 3:   
+                *resBits = 12;
+                break;
+            default:
+                res = 25;
+                printf("Invalid resolution %d\n", buff[2]&3);
+                break;
+        }
+        *type = buff[2]>>2;
+    }
+    return (res == 0);
+}
+
+

diff -r 000000000000 -r 7f5765fcd048 AR1021I2C.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/AR1021I2C.h	Tue Jul 14 11:34:15 2015 +0000
@@ -0,0 +1,79 @@
+/*
+ *  Copyright 2013 Embedded Artists AB
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+
+#ifndef AR1021I2C_H
+#define AR1021I2C_H
+
+#include "TouchPanel.h"
+
+/**
+ * Microchip Touch Screen Controller (AR1021).
+ *
+ * Please note that this touch panel has an on-board storage for
+ * calibration data. Once a successful calibration has been performed
+ * it is not needed to do additional calibrations since the stored
+ * calibration data will be used.
+ */
+class AR1021I2C : public TouchPanel {
+public:
+
+
+    /**
+     * Constructor
+     *
+     * @param mosi I2C SDA pin
+     * @param miso I2C SCL pin
+     * @param siq interrupt pin
+     */
+    AR1021I2C(PinName sda, PinName scl, PinName siq);
+
+    bool info(int* verHigh, int* verLow, int* resBits, int* type);
+
+    virtual bool init(uint16_t width, uint16_t height);
+    virtual bool read(touchCoordinate_t &coord);
+    virtual bool calibrateStart();
+    virtual bool getNextCalibratePoint(uint16_t* x, uint16_t* y);
+    virtual bool waitForCalibratePoint(bool* morePoints, uint32_t timeout);
+
+private:
+
+
+    I2C _i2c;
+    DigitalIn _siq;
+    InterruptIn _siqIrq;
+    bool _initialized;
+
+
+    int32_t _x;
+    int32_t _y;
+    int32_t _pen;
+
+    uint16_t _width;
+    uint16_t _height;
+    uint8_t _inset;
+
+    int _calibPoint;
+
+
+    int cmd(char cmd, char* data, int len, char* respBuf, int* respLen, bool setCsOff=true);
+    int waitForCalibResponse(uint32_t timeout);
+    void readTouchIrq();
+};
+
+#endif
+
+
+

diff -r 000000000000 -r 7f5765fcd048 EALib.lib
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/EALib.lib	Tue Jul 14 11:34:15 2015 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/embeddedartists/code/EALib/#e1e36493f347

diff -r 000000000000 -r 7f5765fcd048 EaLcdBoardGPIO.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/EaLcdBoardGPIO.cpp	Tue Jul 14 11:34:15 2015 +0000
@@ -0,0 +1,98 @@
+/*
+ *  Copyright 2013 Embedded Artists AB
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+
+/******************************************************************************
+ * Includes
+ *****************************************************************************/
+
+#include "mbed.h"
+#include "EaLcdBoardGPIO.h"
+
+/******************************************************************************
+ * Defines and typedefs
+ *****************************************************************************/
+
+
+EaLcdBoardGPIO::EaLcdBoardGPIO(PinName sda, PinName scl)
+  : EaLcdBoard(sda, scl), /*pinWP(P4_15),*/ pin3v3(P2_0), pin5v(P2_21), pinDE(P2_11), pinContrast(P2_1)
+{
+  pinContrast.period_ms(10);
+  setWriteProtect(true);
+  set3V3Signal(false);
+  set5VSignal(false);
+  setDisplayEnableSignal(false);
+  setBacklightContrast(0);
+}
+
+
+void EaLcdBoardGPIO::setWriteProtect(bool enable)
+{  
+    // Not Applicable
+}
+
+void EaLcdBoardGPIO::set3V3Signal(bool enabled) { //P2.0 L=3.3V on
+    if (enabled) {
+        pin3v3 = 0;
+    } else {
+        pin3v3 = 1;
+    }
+}
+
+void EaLcdBoardGPIO::set5VSignal(bool enabled) { //P2.21 H=5V on
+    if (enabled) {
+        pin5v = 1;
+    } else {
+        pin5v = 0;
+    }
+}
+
+void EaLcdBoardGPIO::setDisplayEnableSignal(bool enabled) { //P2.11 H=enabled
+    LPC_IOCON->P2_11 &= ~7; /* GPIO2[11]  @ P2.11 */
+    if (enabled) {
+        pinDE = 1;
+    } else {
+        pinDE = 0;
+    }
+}
+
+void EaLcdBoardGPIO::setBacklightContrast(uint32_t value) { //P2.1, set to 4.30 for now
+#if 0    
+    LPC_IOCON->P2_1 &= ~7; /* GPIO2[1]  @ P2.1 */
+  if (value > 50) {
+      pinContrast = 1;
+  } else {
+      pinContrast = 0;
+  }
+#else
+    uint32_t tmp = LPC_IOCON->P2_1;
+    tmp &= ~7;
+    tmp |= 1;
+    LPC_IOCON->P2_1 = tmp; /* PWM2[1]  @ P2.1 */
+    float f = value;
+    pinContrast = f/100.0f;
+#endif
+  
+//    if (value > 100) return;
+
+//    pca9532_setBlink0Duty(100-value);
+//    pca9532_setBlink0Period(0);
+//    pca9532_setBlink0Leds(LCDB_CTRL_BL_C);
+}
+
+
+
+
+

diff -r 000000000000 -r 7f5765fcd048 EaLcdBoardGPIO.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/EaLcdBoardGPIO.h	Tue Jul 14 11:34:15 2015 +0000
@@ -0,0 +1,52 @@
+/*
+ *  Copyright 2013 Embedded Artists AB
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+
+#ifndef EALCDBOARDGPIO_H
+#define EALCDBOARDGPIO_H
+
+#include "EaLcdBoard.h"
+
+/** An interface to Embedded Artists LCD Boards
+ *
+ */
+class EaLcdBoardGPIO : public EaLcdBoard {
+public:
+
+    EaLcdBoardGPIO(PinName sda, PinName scl);
+
+    void setBC(uint32_t val) { setBacklightContrast(val); };
+
+protected:
+    virtual void setWriteProtect(bool enable);
+    virtual void set3V3Signal(bool enabled);
+    virtual void set5VSignal(bool enabled);
+    virtual void setDisplayEnableSignal(bool enabled);
+    virtual void setBacklightContrast(uint32_t value);
+
+private:
+    //DigitalOut pinWP;
+    DigitalOut pin3v3;
+    DigitalOut pin5v;
+    DigitalOut pinDE;
+    //DigitalOut pinContrast;
+    PwmOut pinContrast;
+};
+
+#endif
+
+
+
+

diff -r 000000000000 -r 7f5765fcd048 EwGuiImpl.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/EwGuiImpl.cpp	Tue Jul 14 11:34:15 2015 +0000
@@ -0,0 +1,206 @@
+#include "EwGuiImpl.h"
+
+#include "LcdController.h"
+#include "EaLcdBoardGPIO.h"
+#include "sdram.h"
+#include "AR1021I2C.h"
+
+
+#define PIXEL_SIZE (2)
+
+#define LCD_CONFIGURATION_43 \
+        40,                         /* horizontalBackPorch */ \
+        5,                          /* horizontalFrontPorch */ \
+        2,                          /* hsync */ \
+        480,                        /* width */ \
+        8,                          /* verticalBackPorch */ \
+        8,                          /* verticalFrontPorch */ \
+        2,                          /* vsync */ \
+        272,                        /* height */ \
+        false,                      /* invertOutputEnable */ \
+        false,                      /* invertPanelClock */ \
+        true,                       /* invertHsync */ \
+        true,                       /* invertVsync */ \
+        1,                          /* acBias */ \
+        LcdController::Bpp_16_565,  /* bpp */ \
+        9000000,                    /* optimalClock */ \
+        LcdController::Tft,         /* panelType */ \
+        false                       /* dualPanel */
+
+#define LCD_INIT_STRING_43  (char*)"v1,cd0,c50,cc0,c30,d100,c31,d100,cd1,d10,o,c51,cc100"
+
+#define LCD_CONFIGURATION_50 \
+        46,                         /* horizontalBackPorch */ \
+        20,                          /* horizontalFrontPorch */ \
+        2,                          /* hsync */ \
+        800,                        /* width */ \
+        23,                          /* verticalBackPorch */ \
+        10,                          /* verticalFrontPorch */ \
+        3,                          /* vsync */ \
+        480,                        /* height */ \
+        false,                      /* invertOutputEnable */ \
+        false,                      /* invertPanelClock */ \
+        true,                       /* invertHsync */ \
+        true,                       /* invertVsync */ \
+        1,                          /* acBias */ \
+        LcdController::Bpp_16_565,  /* bpp */ \
+        30000000,                   /* optimalClock */ \
+        LcdController::Tft,         /* panelType */ \
+        false                       /* dualPanel */
+
+#define LCD_INIT_STRING_50  (char*)"v1,cc0,c31,d50,o,d200,c51,cc100"
+
+EwGuiImpl::EwGuiImpl(WhichDisplay which) {
+
+    EaLcdBoardGPIO lcdBoard(P0_27, P0_28);
+    EaLcdBoardGPIO::Result result;
+	  LcdController::Config* lcdCfg;
+
+    do {
+
+				switch (which) {
+						case TFT_5:
+								lcdCfg = new LcdController::Config(LCD_CONFIGURATION_50);
+							  result = lcdBoard.open(lcdCfg, LCD_INIT_STRING_50);
+								break;
+						case TFT_4_3:
+								lcdCfg = new LcdController::Config(LCD_CONFIGURATION_43);
+							  result = lcdBoard.open(lcdCfg, LCD_INIT_STRING_43);
+								break;
+						default:
+								mbed_die();
+				}
+        
+        if (result != EaLcdBoard::Ok) {
+            printf("Failed to open display: %d\n", result);
+            break;
+        }
+
+        _width = lcdCfg->width;
+        _height = lcdCfg->height;
+
+        // allocate buffer, width x height x 2 (2 bytes = 16 bit color data)
+        _fb = (uint32_t)malloc(_width*_height*PIXEL_SIZE);
+        if (_fb == 0) {
+            printf("Failed to allocate frame buffer\n");
+            break;
+        }
+
+        result = lcdBoard.setFrameBuffer(_fb);
+        if (result != EaLcdBoard::Ok) {
+            printf("Failed to activate frameBuffer: %d\n", result);
+            break;
+        }
+
+        _memSz = 1024*1024*5;
+        _mem = (uint32_t)malloc(_memSz);
+        if (_mem == 0) {
+            printf("Failed to allocate memory block for emwin\n");
+            break;
+        }
+
+
+        memset((void*)_fb, 0x0, _width*_height*PIXEL_SIZE);
+
+        // create touch panel
+				_touch = new AR1021I2C(P0_27, P0_28, P2_25);
+
+        if (!_touch->init(_width, _height)) {
+            printf("TouchPanel.init failed\n");
+            break;
+        }
+
+        init();
+
+    } while(0);
+
+
+}
+
+void* EwGuiImpl::getMemoryBlockAddress() {
+    return (void*)_mem;
+}
+
+uint32_t EwGuiImpl::getMemoryBlockSize() {
+    return _memSz;
+}
+
+uint32_t EwGuiImpl::getDisplayWidth() {
+    return _width;
+}
+
+uint32_t EwGuiImpl::getDisplayHeight() {
+    return _height;
+}
+
+void* EwGuiImpl::getFrameBufferAddress() {
+    return (void*)_fb;
+}
+
+void EwGuiImpl::getTouchValues(int32_t* x, int32_t* y, int32_t* z) {
+
+    if (!x || !y || !z) return;
+
+    TouchPanel::touchCoordinate_t coord;
+    _touch->read(coord);
+
+    *x = coord.x;
+    *y = coord.y;
+    *z = coord.z;
+}
+
+void EwGuiImpl::calibrate() {
+
+    uint16_t x = 0;
+    uint16_t y = 0;
+    bool hasMorePoints = false;
+
+    EwPainter painter;
+    painter.saveContext();
+
+    do {
+
+        printf("Starting calibration\n");
+        if (!_touch->calibrateStart()) {
+            printf("Failed to start calibration\n");
+            break;
+        }
+
+        do {
+            if (!_touch->getNextCalibratePoint(&x, &y)) {
+                printf("Failed to get next calibrate point\n");
+                break;
+            }
+
+            printf("calib: x=%d, y=%d\n", x, y);
+            drawCalibPoint(painter, x, y);
+
+            if (!_touch->waitForCalibratePoint(&hasMorePoints, 0)) {
+                printf("Failed waiting for calibration point\n");
+                break;
+            }
+
+        } while(hasMorePoints);
+
+        printf("Calibration done\n");
+
+
+    } while (0);
+
+
+    painter.clear();
+    painter.restoreContext();
+}
+
+void EwGuiImpl::drawCalibPoint(EwPainter &painter, int32_t x, int32_t y) {
+
+    painter.clear();
+    painter.setColor(EW_WHITE);
+    painter.drawStringHorizCenter("Touch circle to calibrate",
+            getDisplayWidth()/2, getDisplayHeight()/2);
+
+    painter.fillCircle(x, y, 10);
+    painter.setColor(EW_BLACK);
+    painter.fillCircle(x, y, 5);
+}
+

diff -r 000000000000 -r 7f5765fcd048 EwGuiImpl.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/EwGuiImpl.h	Tue Jul 14 11:34:15 2015 +0000
@@ -0,0 +1,46 @@
+
+#ifndef EWGUIIMPL_H
+#define EWGUIIMPL_H
+
+#include "mbed.h"
+#include "EwGui.h"
+#include "EwPainter.h"
+#include "TouchPanel.h"
+
+class EwGuiImpl : public EwGui {
+public:
+
+	  enum WhichDisplay {
+	      TFT_5,    // 5" display
+	      TFT_4_3,  // 4.3" display
+	  };
+
+    EwGuiImpl(WhichDisplay which);
+
+    virtual void* getMemoryBlockAddress();
+    virtual uint32_t getMemoryBlockSize();
+
+    virtual uint32_t getDisplayWidth();
+    virtual uint32_t getDisplayHeight();
+
+    virtual void* getFrameBufferAddress();
+
+    virtual void getTouchValues(int32_t* x, int32_t* y, int32_t* z);
+
+    void calibrate();
+
+
+private:
+
+    uint32_t _width;
+    uint32_t _height;
+    uint32_t _fb;
+    uint32_t _mem;
+    uint32_t _memSz;
+    TouchPanel* _touch;
+
+    void drawCalibPoint(EwPainter &painter, int32_t x, int32_t y);
+};
+
+#endif
+

diff -r 000000000000 -r 7f5765fcd048 Graphics.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Graphics.cpp	Tue Jul 14 11:34:15 2015 +0000
@@ -0,0 +1,243 @@
+
+#include "mbed.h"
+#include "Graphics.h"
+
+
+Graphics::Graphics(uint16_t *pFrmBuf, uint16_t dispWidth, uint16_t dispHeight)
+{
+	this->windowX = dispWidth;
+	this->windowY = dispHeight;
+	this->pFrmBuf = pFrmBuf;
+}
+
+void Graphics::setFrameBuffer( uint16_t *pFrmBuf )
+{
+	this->pFrmBuf = pFrmBuf;
+}
+
+int32_t Graphics::abs(int32_t v1) const
+{
+   if (v1 > 0)
+     return v1;
+
+  return -v1;
+}
+
+/***********************************************************************
+ *
+ * Function: swim_put_line_raw
+ *
+ * Purpose: Draw a line on the physical display
+ *
+ * Processing:
+ *     See function.
+ *
+ * Parameters:
+ *     win : Window identifier
+ *     x1  : Physical X position of X line start
+ *     y1  : Physical Y position of Y line start
+ *     x2  : Physical X position of X line end
+ *     y2  : Physical Y position of Y line end
+ *
+ * Outputs: None
+ *
+ * Returns: Nothing
+ *
+ * Notes: None
+ *
+ **********************************************************************/
+void Graphics::put_line(int32_t x1, int32_t y1, int32_t x2, int32_t y2, int16_t color)
+{
+    int32_t e2, sx, sy, dx, dy, err;
+    
+    /* calculate delta_x and delta_y */
+    dx = abs(x2 - x1);
+    dy = abs(y2 - y1);
+
+    /* set the direction for the step for both x and y, and
+       initialize the error */
+    if (x1 < x2)
+        sx = 1;
+    else
+        sx = -1;
+
+    if (y1 < y2)
+        sy = 1;
+    else
+        sy = -1;
+
+    err = dx - dy;
+   
+    while (1)
+    {
+        if ((x1 >= 0) && (x1 < this->windowX) && 
+            (y1 >= 0) && (y1 < this->windowY))
+            this->pFrmBuf[x1 + (this->windowX*y1)] = color;
+
+        if ((x1 == x2) && (y1 == y2))
+            return;
+
+        e2 = 2 * err;
+        if (e2 > -dy)
+        {
+            err -= dy;
+            x1 += sx;
+        }
+        if (e2 < dx)
+        {
+            err += dx;
+            y1 += sy;
+        }
+    }
+}
+
+/***********************************************************************
+ *
+ * Function: plot4points
+ *
+ * Purpose:
+ *
+ * Processing:
+ *     See function.
+ *
+ * Parameters:
+ *     win    : Window identifier
+ *     cx     :
+ *     cy     :
+ *     x      :
+ *     y      :
+ *     Filled :
+ *
+ * Outputs: None
+ *
+ * Returns: Nothing
+ *
+ * Notes: None
+ *
+ **********************************************************************/
+void Graphics::plot4points( int32_t cx, int32_t cy, int32_t x, int32_t y, int16_t color, int32_t Filled )
+   {
+   int16_t x0, x1, y0, y1;
+
+   y0 = cy + y;
+   y1 = cy - y;
+   if( Filled )
+      {
+      for( x0=cx - x; x0<=cx + x; x0++ )
+         {
+         if ((x0>=0) && (x0<this->windowX) && (y0>=0) && (y0<this->windowY))
+            this->pFrmBuf[x0 + (this->windowX*y0)] = color;
+         if ((x0>=0) && (x0<this->windowX) && (y1>=0) && (y1<this->windowY))
+            this->pFrmBuf[x0 + (this->windowX*y1)] = color;
+         }
+      }
+   else
+      {
+      x0 = cx + x;
+      x1 = cx - x;
+      if ((x0>=0) && (x0<this->windowX) && (y0>=0) && (y0<this->windowY))
+         this->pFrmBuf[x0 + (this->windowX*y0)] = color;
+      if ((x != 0) && 
+          (x1>=0) && (x1<this->windowX) && (y0>=0) && (y0<this->windowY))
+         this->pFrmBuf[x1 + (this->windowX*y0)] = color;
+      if ((y != 0) &&
+          (x0>=0) && (x0<this->windowX) && (y1>=0) && (y1<this->windowY))
+         this->pFrmBuf[x0 + (this->windowX*y1)] = color;
+      if ((x != 0 && y != 0) &&
+          (x1>=0) && (x1<this->windowX) && (y1>=0) && (y1<this->windowY))
+         this->pFrmBuf[x1 + (this->windowX*y1)] = color;
+      }
+   }
+
+/***********************************************************************
+ *
+ * Function: plot8points
+ *
+ * Purpose:
+ *
+ * Processing:
+ *     See function.
+ *
+ * Parameters:
+ *     win    : Window identifier
+ *     cx     :
+ *     cy     :
+ *     x      :
+ *     y      :
+ *     Filled :
+ *
+ * Outputs: None
+ *
+ * Returns: Nothing
+ *
+ * Notes: None
+ *
+ **********************************************************************/
+void Graphics::plot8points( int32_t cx, int32_t cy, int32_t x, int32_t y, int16_t color, int32_t Filled )
+   {
+   plot4points( cx, cy, x, y, color, Filled );
+   if (x != y)
+      plot4points( cx, cy, y, x, color, Filled );
+   }
+
+/***********************************************************************
+ *
+ * Function: swim_put_circle
+ *
+ * Purpose:
+ *
+ * Processing:
+ *     See function.
+ *
+ * Parameters:
+ *     win    : Window identifier
+ *     cx     :
+ *     cy     :
+ *     radius :
+ *     Filled :
+ *
+ * Outputs: None
+ *
+ * Returns: Nothing
+ *
+ * Notes: None
+ *
+ **********************************************************************/
+void Graphics::put_circle( int32_t cx, int32_t cy, int16_t color, int32_t radius, int32_t Filled )
+   {
+   int32_t Error = -radius;
+   int16_t x = radius;
+   int16_t y = 0;
+
+   while( x >= y )
+      {
+      plot8points( cx, cy, x, y, color, Filled );
+
+      Error += y;
+      ++y;
+      Error += y;
+
+      if( Error >= 0 )
+         {
+         --x;
+         Error -= x;
+         Error -= x;
+         }
+      }
+   }
+
+void Graphics::put_dot( int32_t cx, int32_t cy, int16_t color )
+{
+  int size = 1;
+  for (int y1 = cy - size; y1 <= (cy + size); y1++) {
+    for (int x1 = cx - size; x1 <= (cx + size); x1++) {
+      if ((x1 >= 0) && (x1 < this->windowX) && (y1 >= 0) && (y1 < this->windowY)) {
+          this->pFrmBuf[x1 + (this->windowX*y1)] = color;
+      }
+    }
+  }
+}
+
+
+
+

diff -r 000000000000 -r 7f5765fcd048 Graphics.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Graphics.h	Tue Jul 14 11:34:15 2015 +0000
@@ -0,0 +1,31 @@
+
+#ifndef GRAPHICS_H
+#define GRAPHICS_H
+
+class Graphics {
+public:
+
+	Graphics(uint16_t *pFrmBuf, uint16_t dispWidth, uint16_t dispHeight);
+
+	void setFrameBuffer( uint16_t *pFrmBuf );
+	void put_line(int32_t x1, int32_t y1, int32_t x2, int32_t y2, int16_t color);
+    void put_circle( int32_t cx, int32_t cy, int16_t color, int32_t radius, int32_t Filled );
+    void put_dot( int32_t cx, int32_t cy, int16_t color );
+
+protected:
+	uint16_t windowX;
+	uint16_t windowY;
+	uint16_t *pFrmBuf;
+	
+    int32_t abs(int32_t v1) const;
+    
+    virtual void plot4points( int32_t cx, int32_t cy, int32_t x, int32_t y, int16_t color, int32_t Filled );
+    void plot8points( int32_t cx, int32_t cy, int32_t x, int32_t y, int16_t color, int32_t Filled );
+    
+};
+
+#endif
+
+
+
+

diff -r 000000000000 -r 7f5765fcd048 MyWindow.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/MyWindow.cpp	Tue Jul 14 11:34:15 2015 +0000
@@ -0,0 +1,97 @@
+#include "mbed.h"
+
+#include "MyWindow.h"
+#include "EwPainter.h"
+
+MyWindow::MyWindow(EwWindow* parent) :
+    EwWindow(5, 2, 300, 250, parent),
+    _changeBtn(130, 200, 40, 20, this),
+    _checkBox(0, 0, 80, 25, this),
+    _dropDownLst(0, 0, 100, 50, this){
+
+    _changeBtn.setText("Click");
+    _changeBtn.setClickedListener(this, &MyWindow::clickListener);
+
+    _checkBox.setText("CheckBox");
+    _checkBox.setChangedListener(this, &MyWindow::checkedListener);
+
+    _dropDownLst.addString("First");
+    _dropDownLst.addString("Second");
+    _dropDownLst.addString("Third");
+
+    _clickCnt = 0;
+    _pressed = false;
+    _pressX = 0;
+    _pressY = 0;
+
+    resizeTo(parent->getWidth()-15, parent->getHeight()-35);
+    _changeBtn.moveTo(getWidth()/2-_changeBtn.getWidth()/2,
+            getHeight()-_changeBtn.getHeight()-5);
+
+    _checkBox.moveTo(5, 35);
+
+    _dropDownLst.move(getWidth()-_dropDownLst.getWidth()-5, 5);
+}
+
+bool MyWindow::paintEvent() {
+    char buf[30];
+    EwPainter painter;
+
+    painter.setBackgroundColor(EW_LIGHTGRAY);
+    painter.clear();
+
+    if (_clickCnt > 0) {
+        painter.setColor(EW_BLUE);
+        if (_clickCnt == 1) {
+            sprintf(buf, "Clicked %d time", _clickCnt);
+        }
+        else {
+            sprintf(buf, "Clicked %d times", _clickCnt);
+        }
+        painter.drawStringClearEOL(buf, 5, 5);
+    }
+
+    if (_pressed) {
+        painter.setColor(GUI_DARKRED);
+        sprintf(buf, "Touch at %d,%d", _pressX, _pressY);
+        painter.drawStringClearEOL(buf, 5, 15);
+    }
+
+    return true;
+}
+
+bool MyWindow::touchEvent(int x, int y, EwTouchState_t state) {
+
+    if (state == TouchStatePressed) {
+        _pressed = true;
+        _pressX = x;
+        _pressY = y;
+    }
+    else {
+        _pressed = false;
+    }
+
+    invalidate();
+
+    return true;
+}
+
+void MyWindow::clickListener(EwWindow* w) {
+    _clickCnt++;
+    invalidate();
+}
+
+void MyWindow::checkedListener(EwWindow* w) {
+    EwCheckBox* b = (EwCheckBox*)w;
+
+    ewCheckBoxState_t state = b->getState();
+
+    if (state == CheckBoxStateUnchecked) {
+        b->setText("Unchecked");
+    }
+    else {
+        b->setText("Checked");
+    }
+
+}
+

diff -r 000000000000 -r 7f5765fcd048 MyWindow.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/MyWindow.h	Tue Jul 14 11:34:15 2015 +0000
@@ -0,0 +1,37 @@
+
+#ifndef MYWINDOW_H
+#define MYWINDOW_H
+
+#include "EwWindow.h"
+#include "EwButton.h"
+#include "EwCheckBox.h"
+#include "EwDropDown.h"
+
+class MyWindow : public EwWindow {
+public:
+
+    MyWindow(EwWindow* parent);
+
+    virtual bool paintEvent();
+    virtual bool touchEvent(int x, int y, EwTouchState_t state);
+
+    virtual bool resizedEvent() {printf("MyWindow resized\n"); return true;}
+
+
+private:
+
+    int _clickCnt;
+    bool _pressed;
+    int _pressX;
+    int _pressY;
+    EwButton _changeBtn;
+    EwCheckBox _checkBox;
+    EwDropDown _dropDownLst;
+
+
+    void clickListener(EwWindow* w);
+    void checkedListener(EwWindow* w);
+};
+
+#endif
+

diff -r 000000000000 -r 7f5765fcd048 ewgui.lib
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ewgui.lib	Tue Jul 14 11:34:15 2015 +0000
@@ -0,0 +1,1 @@
+https://mbed.org/users/embeddedartists/code/ewgui/#0b16165ada7c

diff -r 000000000000 -r 7f5765fcd048 main.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Tue Jul 14 11:34:15 2015 +0000
@@ -0,0 +1,92 @@
+
+/******************************************************************************
+ * Includes
+ *****************************************************************************/
+
+#include "mbed.h"
+
+#include "sdram.h"
+
+#include "EwGuiImpl.h"
+#include "EwFrameWindow.h"
+#include "MyWindow.h"
+
+
+/******************************************************************************
+ * Typedefs and defines
+ *****************************************************************************/
+
+
+/******************************************************************************
+ * Local variables
+ *****************************************************************************/
+
+static EwGuiImpl* gui = NULL;
+
+/******************************************************************************
+ * Local functions
+ *****************************************************************************/
+
+static void pollTouch() {
+    if (gui == NULL) return;
+
+    gui->execTouch();
+}
+
+/******************************************************************************
+ * Main function
+ *****************************************************************************/
+
+int main (void) {
+    Ticker ticker;
+
+    // Frame buffer is put in SDRAM
+    if (sdram_init() == 1) {
+        printf("Failed to initialize SDRAM\n");
+        return 1;
+    }
+
+    // instantiate and initialize GUI
+    gui = new EwGuiImpl(EwGuiImpl::TFT_4_3);
+    //gui = new EwGuiImpl(EwGuiImpl::TFT_5);
+    if (gui == NULL) {
+        printf("Failed to instantiate EwGuiImpl\n");
+        return 1;
+    }
+
+    // calibrate touch screen
+    gui->calibrate();
+
+    // register a callback that will check for touch events
+    ticker.attach(&pollTouch, 0.10);
+
+    // showing how to enable skinning
+    BUTTON_SetDefaultSkin   (BUTTON_SKIN_FLEX);
+    CHECKBOX_SetDefaultSkin (CHECKBOX_SKIN_FLEX);
+    DROPDOWN_SetDefaultSkin (DROPDOWN_SKIN_FLEX);
+    FRAMEWIN_SetDefaultSkin (FRAMEWIN_SKIN_FLEX);
+
+    // make sure the desktop has a color so that it is redrawn
+    EwWindow::setDesktopColor(EW_BLACK);
+
+    // create a frame window
+    EwFrameWindow frameWin(30, 30, gui->getDisplayWidth()-60,
+            gui->getDisplayHeight()-60, "Window Title");
+    frameWin.setTitleHeight(20);
+
+    // create and associate a custom window with the frame window
+    MyWindow myWindow(&frameWin);
+
+    // application loop running the UI and checking for touch events
+    while(1) {
+
+        // In this example touch events are checked by interrupt
+        // (pollTouch function), but we could also have done it
+        // in this while loop
+        //gui.execTouch();
+        gui->exec();
+
+    }
+
+}
+

diff -r 000000000000 -r 7f5765fcd048 mbed.bld
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed.bld	Tue Jul 14 11:34:15 2015 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/mbed_official/code/mbed/builds/da0ca467f8b5
\ No newline at end of file