Diff: Picaso_4DGL-32PTU_main.cpp

Revision:

0:a5ef6bc3c2e8

Child:

1:e2337e2653e1

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Picaso_4DGL-32PTU_main.cpp	Thu Sep 08 13:35:36 2016 +0000
@@ -0,0 +1,288 @@
+//
+// TFT_4DGL is a class to drive 4D Systems TFT touch screens
+//
+// Copyright (C) <2010> Stephane ROCHON <stephane.rochon at free.fr>
+//
+// TFT_4DGL is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// TFT_4DGL is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with TFT_4DGL.  If not, see <http://www.gnu.org/licenses/>.
+
+#include "mbed.h"
+#include "Picaso_4DGL-32PTU.h"
+
+//Serial pc(USBTX,USBRX);
+DigitalOut led1(LED1), led2(LED2);
+#define SHORT_WAIT 500
+#define LONG_WAIT 2000
+
+//******************************************************************************************************
+TFT_4DGL :: TFT_4DGL(PinName tx, PinName rx, PinName rst) : pc(USBTX, USBRX), _cmd(tx, rx), _rst(rst) { // Constructor
+
+responseBuild(10, '0');
+
+#if DEBUGMODE
+    pc.baud(115200);
+
+    pc.printf("\n\n\n");
+    pc.printf("********************\n\r");
+    pc.printf("TFT_4DGL CONSTRUCTOR\n\r");
+    pc.printf("********************\n\r");
+#endif
+
+    _rst = 1;    // put RESET pin to high to start TFT screen
+    //wait_ms(10000);
+    //reset();
+#if DEBUGMODE
+    pc.printf("Wait 3 seconds for startup...\n\r");
+    wait_ms(1000);
+    pc.printf("2\n\r");
+    wait_ms(1000);
+    pc.printf("1\n\r");
+    wait_ms(1000);
+#else
+    wait_ms(3000);
+#endif
+    //autobaud();         // send autobaud command
+#if DEBUGMODE
+    pc.printf("set baudrate to 9600...\n\r");
+#endif
+    baudrate(9600);   // set the initial baudrate to 256kbps - fastest supported by uLCD-32PT
+#if DEBUGMODE
+    pc.printf("clear screen...\n\r");
+#endif
+    cls();              // clear screen
+    screenOrientation(1);
+    setFont(3);
+    
+#if DEBUGMODE
+    pc.printf("Start Demo...\n\r");
+    wait_ms(1000);
+    //mainDemo();
+    //textDemo();
+    graphicsDemo();
+#endif   
+
+}
+
+//******************************************************************************************************
+void TFT_4DGL :: responseBuild(int size, char c) {
+    
+    response[size] = c;
+    respLen = 0;
+}
+
+//******************************************************************************************************
+void TFT_4DGL :: writeBYTE(char c) { // send a BYTE command to screen
+
+    _cmd.putc(c);
+
+#if DEBUGMODE
+    pc.printf("   Char sent : 0x%02X  ",c);
+    pc.putc(c);
+    pc.printf(" \n\r");
+#endif
+
+}
+
+//******************************************************************************************************
+void TFT_4DGL :: freeBUFFER(void) {       // Clear serial buffer before writing command
+
+    while (_cmd.readable()) _cmd.getc();  // clear buffer garbage
+}
+
+//******************************************************************************************************
+void TFT_4DGL :: writeCOMMAND(char *command, int number) { // send several BYTES making a command and return an answer
+
+#if DEBUGMODE
+    pc.printf("\n\r");
+    pc.printf("New COMMAND : 0x%02X%02X\n\r", command[0], command[1]);
+#endif
+    int i;
+    freeBUFFER();
+
+    for (i = 0; i < number; i++) writeBYTE(command[i]); // send command to serial port
+
+    getResponse();
+}
+
+//**************************************************************************
+void TFT_4DGL :: reset() {  // Reset Screen
+
+    _rst = 0;               // put RESET pin to low
+    wait_ms(TEMPO);         // wait a few milliseconds for command reception
+    _rst = 1;               // put RESET back to high
+    wait(3);                // wait 3s for screen to restart
+
+    freeBUFFER();           // clean buffer from possible garbage
+}
+
+//**************************************************************************
+void TFT_4DGL :: baudrate(long speed) {  // set screen baud rate
+    
+    char command[4]= "";
+    command[0] = BAUDRATE_MSB;
+    command[1] = BAUDRATE_LSB;
+    switch (speed) {
+        case  300 :
+            command[2] = BAUD_300_MSB;
+            command[3] = BAUD_300_LSB;
+            break;
+        case  600 :
+            command[2] = BAUD_600_MSB;
+            command[3] = BAUD_600_LSB;
+            break;
+        case 1200 :
+            command[2] = BAUD_1200_MSB;
+            command[3] = BAUD_1200_LSB;
+            break;
+        case 2400 :
+            command[2] = BAUD_2400_MSB;
+            command[3] = BAUD_2400_LSB;
+            break;
+        case 4800 :
+            command[2] = BAUD_4800_MSB;
+            command[3] = BAUD_4800_LSB;
+            break;
+        case 9600 :
+            command[2] = BAUD_9600_MSB;
+            command[3] = BAUD_9600_LSB;
+            break;
+        case 14400 :
+            command[2] = BAUD_14400_MSB;
+            command[3] = BAUD_14400_LSB;
+            break;
+        case 19200 :
+            command[2] = BAUD_19200_MSB;
+            command[3] = BAUD_19200_LSB;
+            break;
+        case 38400 :
+            command[2] = BAUD_38400_MSB;
+            command[3] = BAUD_38400_LSB;
+            break;
+        case 56000 :
+            command[2] = BAUD_56000_MSB;
+            command[3] = BAUD_56000_LSB;
+            break;
+        case 57600 :
+            command[2] = BAUD_57600_MSB;
+            command[3] = BAUD_57600_LSB;
+            break;
+        case 115200 :
+            command[2] = BAUD_115200_MSB;
+            command[3] = BAUD_115200_LSB;
+            break;
+        case 128000 :
+            command[2] = BAUD_128000_MSB;
+            command[3] = BAUD_128000_LSB;
+            break;
+        case 256000 :
+            command[2] = BAUD_256000_MSB;
+            command[3] = BAUD_256000_LSB;
+            break;
+        case 300000 :
+            command[2] = BAUD_300000_MSB;
+            command[3] = BAUD_300000_LSB;
+            break;
+        case 375000 :
+            command[2] = BAUD_375000_MSB;
+            command[3] = BAUD_375000_LSB;
+            break;
+        case 500000 :
+            command[2] = BAUD_500000_MSB;
+            command[3] = BAUD_500000_LSB;
+            break;
+        case 600000 :
+            command[2] = BAUD_600000_MSB;
+            command[3] = BAUD_600000_LSB;
+            break;
+        default :
+            command[2] = BAUD_9600_MSB;
+            command[3] = BAUD_9600_LSB;
+            speed = 9600;
+            break;
+    }
+    
+#if DEBUGMODE
+    pc.printf("\n\r");
+    pc.printf("New COMMAND : 0x%02X%02X\n\r", command[0], command[1]);
+#endif
+
+    int i;
+    freeBUFFER();
+    
+    //Change baudrates - as instructed by 4DGL
+    if (speed == 128000) speed = 133928; 
+    if (speed == 256000) speed = 282353; 
+    if (speed == 300000) speed = 312500; 
+    if (speed == 375000) speed = 401785; 
+    if (speed == 500000) speed = 562500; 
+    if (speed == 600000) speed = 703125; 
+    
+    for (i = 0; i <4; i++) writeBYTE(command[i]);      // send command to serial port
+    _cmd.baud(speed);                                  // set mbed to same speed
+    
+    getResponse();
+}
+
+//**************************************************************************
+void TFT_4DGL :: getResponse() {
+    
+    while (!_cmd.readable()) wait_ms(TEMPO);           // wait for screen answer
+    
+    while (_cmd.readable()) {
+        resp = _cmd.getc();           // read response if any
+    }
+    switch (resp) {
+        case ACK :
+            resp = 1;
+            break;
+        case NACK :
+            resp = -1;
+            break;
+        default :
+            resp = 0;
+            break;
+    }
+    pc.printf("\n\r   Answer received : %d\n\r", resp);
+}
+
+//**************************************************************************
+void TFT_4DGL :: screenOrientation(char c) {   // select screen orientation
+    char command[4] = "";
+    command[0] = ORIENTATION_MSB;
+    command[1] = ORIENTATION_LSB;
+    
+    switch (c) {
+        case 1 :
+            command[2] = LANDSCAPE_MSB;
+            command[3] = LANDSCAPE_LSB;
+            currentOrientation = 1;
+            break;
+        case 2 :
+            command[2] = LANDSCAPE_R_MSB;
+            command[3] = LANDSCAPE_R_LSB;
+            currentOrientation = 2;
+            break;
+        case 3 :
+            command[2] = PORTRAIT_MSB;
+            command[3] = PORTRAIT_LSB;
+            currentOrientation = 3;
+            break;
+        case 4 :
+            command[2] = PORTRAIT_R_MSB;
+            command[3] = PORTRAIT_R_LSB;
+            currentOrientation = 4;
+            break;
+    }
+    
+    writeCOMMAND(command, 4);
+}