Jeffery Hurley
Simple starter skeleton for asteroids video game.
Diff: uLCD_4DGL_main.cpp
- Revision:
- 0:0c450cb95a1e
diff -r 000000000000 -r 0c450cb95a1e uLCD_4DGL_main.cpp
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/uLCD_4DGL_main.cpp Thu Feb 21 17:44:23 2019 +0000
@@ -0,0 +1,469 @@
+//
+// uLCD_4DGL is a class to drive 4D Systems uLCD 144 G2
+//
+// Copyright (C) <2010> Stephane ROCHON <stephane.rochon at free.fr>
+// Modifed for Goldelox processor <2013> Jim Hamblen
+//
+// uLCD_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.
+//
+// uLCD_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 uLCD_4DGL. If not, see <http://www.gnu.org/licenses/>.
+
+#include "mbed.h"
+#include "uLCD_4DGL.h"
+
+#define ARRAY_SIZE(X) sizeof(X)/sizeof(X[0])
+
+//Serial pc(USBTX,USBRX);
+
+
+//******************************************************************************************************
+uLCD_4DGL :: uLCD_4DGL(PinName tx, PinName rx, PinName rst) : _cmd(tx, rx),
+ _rst(rst)
+#if DEBUGMODE
+ ,pc(USBTX, USBRX)
+#endif // DEBUGMODE
+{
+ // Constructor
+ _cmd.baud(9600);
+#if DEBUGMODE
+ pc.baud(115200);
+
+ pc.printf("\n\n\n");
+ pc.printf("*********************\n");
+ pc.printf("uLCD_4DGL CONSTRUCTOR\n");
+ pc.printf("*********************\n");
+#endif
+
+ _rst = 1; // put RESET pin to high to start TFT screen
+ reset();
+ cls(); // clear screen
+ current_col = 0; // initial cursor col
+ current_row = 0; // initial cursor row
+ current_color = WHITE; // initial text color
+ current_orientation = IS_PORTRAIT; // initial screen orientation
+ current_hf = 1;
+ current_wf = 1;
+ set_font(FONT_7X8); // initial font
+// text_mode(OPAQUE); // initial texr mode
+}
+
+//******************************************************************************************************
+void uLCD_4DGL :: writeBYTE(char c) // send a BYTE command to screen
+{
+
+ _cmd.putc(c);
+ wait_us(500); //mbed is too fast for LCD at high baud rates in some long commands
+
+#if DEBUGMODE
+ pc.printf(" Char sent : 0x%02X\n",c);
+#endif
+
+}
+
+//******************************************************************************************************
+void uLCD_4DGL :: writeBYTEfast(char c) // send a BYTE command to screen
+{
+
+ _cmd.putc(c);
+ //wait_ms(0.0); //mbed is too fast for LCD at high baud rates - but not in short commands
+
+#if DEBUGMODE
+ pc.printf(" Char sent : 0x%02X\n",c);
+#endif
+
+}
+//******************************************************************************************************
+void uLCD_4DGL :: freeBUFFER(void) // Clear serial buffer before writing command
+{
+
+ while (_cmd.readable()) _cmd.getc(); // clear buffer garbage
+}
+
+//******************************************************************************************************
+int uLCD_4DGL :: writeCOMMAND(char *command, int number) // send several BYTES making a command and return an answer
+{
+
+#if DEBUGMODE
+ pc.printf("\n");
+ pc.printf("New COMMAND : 0x%02X\n", command[0]);
+#endif
+ int i, resp = 0;
+ freeBUFFER();
+ writeBYTE(0xFF);
+ for (i = 0; i < number; i++) {
+ if (i<16)
+ writeBYTEfast(command[i]); // send command to serial port
+ else
+ writeBYTE(command[i]); // send command to serial port but slower
+ }
+ while (!_cmd.readable()) wait_ms(TEMPO); // wait for screen answer
+ if (_cmd.readable()) resp = _cmd.getc(); // read response if any
+ switch (resp) {
+ case ACK : // if OK return 1
+ resp = 1;
+ break;
+ case NAK : // if NOK return -1
+ resp = -1;
+ break;
+ default :
+ resp = 0; // else return 0
+ break;
+ }
+#if DEBUGMODE
+ pc.printf(" Answer received : %d\n",resp);
+#endif
+
+ return resp;
+}
+
+//**************************************************************************
+void uLCD_4DGL :: reset() // Reset Screen
+{
+ wait_ms(5);
+ _rst = 0; // put RESET pin to low
+ wait_ms(5); // 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
+}
+//******************************************************************************************************
+int uLCD_4DGL :: writeCOMMANDnull(char *command, int number) // send several BYTES making a command and return an answer
+{
+
+#if DEBUGMODE
+ pc.printf("\n");
+ pc.printf("New COMMAND : 0x%02X\n", command[0]);
+#endif
+ int i, resp = 0;
+ freeBUFFER();
+ writeBYTE(0x00); //command has a null prefix byte
+ for (i = 0; i < number; i++) {
+ if (i<16) //don't overflow LCD UART buffer
+ writeBYTEfast(command[i]); // send command to serial port
+ else
+ writeBYTE(command[i]); // send command to serial port with delay
+ }
+ while (!_cmd.readable()) wait_ms(TEMPO); // wait for screen answer
+ if (_cmd.readable()) resp = _cmd.getc(); // read response if any
+ switch (resp) {
+ case ACK : // if OK return 1
+ resp = 1;
+ break;
+ case NAK : // if NOK return -1
+ resp = -1;
+ break;
+ default :
+ resp = 0; // else return 0
+ break;
+ }
+#if DEBUGMODE
+ pc.printf(" Answer received : %d\n",resp);
+#endif
+
+ return resp;
+}
+
+//**************************************************************************
+void uLCD_4DGL :: cls() // clear screen
+{
+ char command[1] = "";
+
+ command[0] = CLS;
+ writeCOMMAND(command, 1);
+ current_row=0;
+ current_col=0;
+ current_hf = 1;
+ current_wf = 1;
+ set_font(FONT_7X8); // initial font
+}
+
+//**************************************************************************
+int uLCD_4DGL :: version() // get API version
+{
+
+ char command[2] = "";
+ command[0] = '\x00';
+ command[1] = VERSION;
+ return readVERSION(command, 2);
+}
+
+//**************************************************************************
+void uLCD_4DGL :: baudrate(int speed) // set screen baud rate
+{
+ char command[3]= "";
+ writeBYTE(0x00);
+ command[0] = BAUDRATE;
+ command[1] = 0;
+ int newbaud = BAUD_9600;
+ switch (speed) {
+ case 110 :
+ newbaud = BAUD_110;
+ break;
+ case 300 :
+ newbaud = BAUD_300;
+ break;
+ case 600 :
+ newbaud = BAUD_600;
+ break;
+ case 1200 :
+ newbaud = BAUD_1200;
+ break;
+ case 2400 :
+ newbaud = BAUD_2400;
+ break;
+ case 4800 :
+ newbaud = BAUD_4800;
+ break;
+ case 9600 :
+ newbaud = BAUD_9600;
+ break;
+ case 14400 :
+ newbaud = BAUD_14400;
+ break;
+ case 19200 :
+ newbaud = BAUD_19200;
+ break;
+ case 31250 :
+ newbaud = BAUD_31250;
+ break;
+ case 38400 :
+ newbaud = BAUD_38400;
+ break;
+ case 56000 :
+ newbaud = BAUD_56000;
+ break;
+ case 57600 :
+ newbaud = BAUD_57600;
+ break;
+ case 115200 :
+ newbaud = BAUD_115200;
+ break;
+ case 128000 :
+ newbaud = BAUD_128000;
+ break;
+ case 256000 :
+ newbaud = BAUD_256000;
+ break;
+ case 300000 :
+ newbaud = BAUD_300000;
+ speed = 272727;
+ break;
+ case 375000 :
+ newbaud = BAUD_375000;
+ speed = 333333;
+ break;
+ case 500000 :
+ newbaud = BAUD_500000;
+ speed = 428571;
+ break;
+ case 600000 :
+ newbaud = BAUD_600000;
+ break;
+ case 750000 : //rates over 600000 are not documented, but seem to work
+ newbaud = BAUD_750000;
+ break;
+ case 1000000 :
+ newbaud = BAUD_1000000;
+ break;
+ case 1500000 :
+ newbaud = BAUD_1500000;
+ break;
+ case 3000000 :
+ newbaud = BAUD_3000000;
+ break;
+ default :
+ newbaud = BAUD_9600;
+ speed = 9600;
+ break;
+ }
+
+ int i, resp = 0;
+
+ freeBUFFER();
+ command[1] = char(newbaud >>8);
+ command[2] = char(newbaud % 256);
+ wait_ms(1);
+ for (i = 0; i <3; i++) writeBYTEfast(command[i]); // send command to serial port
+ for (i = 0; i<10; i++) wait_ms(1);
+ //dont change baud until all characters get sent out
+ _cmd.baud(speed); // set mbed to same speed
+ i=0;
+ while ((!_cmd.readable()) && (i<25000)) {
+ wait_ms(TEMPO); // wait for screen answer - comes 100ms after change
+ i++; //timeout if ack character missed by baud change
+ }
+ if (_cmd.readable()) resp = _cmd.getc(); // read response if any
+ switch (resp) {
+ case ACK : // if OK return 1
+ resp = 1;
+ break;
+ case NAK : // if NOK return -1
+ resp = -1;
+ break;
+ default :
+ resp = 0; // else return 0
+ break;
+ }
+}
+
+//******************************************************************************************************
+int uLCD_4DGL :: readVERSION(char *command, int number) // read screen info and populate data
+{
+
+ int i, temp = 0, resp = 0;
+ char response[5] = "";
+
+ freeBUFFER();
+
+ for (i = 0; i < number; i++) writeBYTE(command[i]); // send all chars to serial port
+
+ while (!_cmd.readable()) wait_ms(TEMPO); // wait for screen answer
+
+ while (_cmd.readable() && resp < ARRAY_SIZE(response)) {
+ temp = _cmd.getc();
+ response[resp++] = (char)temp;
+ }
+ switch (resp) {
+ case 2 : // if OK populate data and return 1
+ revision = response[0]<<8 + response[1];
+ resp = 1;
+ break;
+ default :
+ resp = 0; // else return 0
+ break;
+ }
+ return resp;
+}
+
+//****************************************************************************************************
+void uLCD_4DGL :: background_color(int color) // set screen background color
+{
+ char command[3]= ""; // input color is in 24bits like 0xRRGGBB
+
+ command[0] = BCKGDCOLOR;
+
+ int red5 = (color >> (16 + 3)) & 0x1F; // get red on 5 bits
+ int green6 = (color >> (8 + 2)) & 0x3F; // get green on 6 bits
+ int blue5 = (color >> (0 + 3)) & 0x1F; // get blue on 5 bits
+
+ command[1] = ((red5 << 3) + (green6 >> 3)) & 0xFF; // first part of 16 bits color
+ command[2] = ((green6 << 5) + (blue5 >> 0)) & 0xFF; // second part of 16 bits color
+
+ writeCOMMAND(command, 3);
+}
+
+//****************************************************************************************************
+void uLCD_4DGL :: textbackground_color(int color) // set screen background color
+{
+ char command[3]= ""; // input color is in 24bits like 0xRRGGBB
+
+ command[0] = TXTBCKGDCOLOR;
+
+ int red5 = (color >> (16 + 3)) & 0x1F; // get red on 5 bits
+ int green6 = (color >> (8 + 2)) & 0x3F; // get green on 6 bits
+ int blue5 = (color >> (0 + 3)) & 0x1F; // get blue on 5 bits
+
+ command[1] = ((red5 << 3) + (green6 >> 3)) & 0xFF; // first part of 16 bits color
+ command[2] = ((green6 << 5) + (blue5 >> 0)) & 0xFF; // second part of 16 bits color
+
+ writeCOMMAND(command, 3);
+}
+
+//****************************************************************************************************
+void uLCD_4DGL :: display_control(char mode) // set screen mode to value
+{
+ char command[3]= "";
+
+ command[0] = DISPCONTROL;
+ command[1] = 0;
+ command[2] = mode;
+
+ if (mode == ORIENTATION) {
+ switch (mode) {
+ case LANDSCAPE :
+ current_orientation = IS_LANDSCAPE;
+ break;
+ case LANDSCAPE_R :
+ current_orientation = IS_LANDSCAPE;
+ break;
+ case PORTRAIT :
+ current_orientation = IS_PORTRAIT;
+ break;
+ case PORTRAIT_R :
+ current_orientation = IS_PORTRAIT;
+ break;
+ }
+ }
+ writeCOMMAND(command, 3);
+ set_font(current_font);
+}
+//****************************************************************************************************
+void uLCD_4DGL :: display_power(char mode) // set screen mode to value
+{
+ char command[3]= "";
+
+ command[0] = DISPPOWER;
+ command[1] = 0;
+ command[2] = mode;
+ writeCOMMAND(command, 3);
+}
+//****************************************************************************************************
+void uLCD_4DGL :: set_volume(char value) // set sound volume to value
+{
+ char command[2]= "";
+
+ command[0] = SETVOLUME;
+ command[1] = value;
+
+ writeCOMMAND(command, 2);
+}
+
+
+//******************************************************************************************************
+int uLCD_4DGL :: getSTATUS(char *command, int number) // read screen info and populate data
+{
+
+#if DEBUGMODE
+ pc.printf("\n");
+ pc.printf("New COMMAND : 0x%02X\n", command[0]);
+#endif
+
+ int i, temp = 0, resp = 0;
+ char response[5] = "";
+
+ freeBUFFER();
+
+ for (i = 0; i < number; i++) writeBYTE(command[i]); // send all chars to serial port
+
+ while (!_cmd.readable()) wait_ms(TEMPO); // wait for screen answer
+
+ while (_cmd.readable() && resp < ARRAY_SIZE(response)) {
+ temp = _cmd.getc();
+ response[resp++] = (char)temp;
+ }
+ switch (resp) {
+ case 4 :
+ resp = (int)response[1]; // if OK populate data
+ break;
+ default :
+ resp = -1; // else return 0
+ break;
+ }
+
+#if DEBUGMODE
+ pc.printf(" Answer received : %d\n", resp);
+#endif
+
+ return resp;
+}
+