Wim Huiskamp / PT6964

Princeton PT6964 LED controller supports 4 Digits @ 13 Segments, 5 Digits @ 12 Segments, 6 Digits @ 11 Segments or 7 Digits @ 10 Segments. Also supports a scanned keyboard of upto 20 keys. SPI bus interface.

Dependents:   mbed_PT6964

Princeton PT6964 LED controller supports 4 Digits @ 13 Segments, 5 Digits @ 12 Segments, 6 Digits @ 11 Segments or 7 Digits @ 10 Segments. Also supports a scanned keyboard of upto 20 keys. SPI bus interface.

See Component page here.

PT6964.cpp@0:27f32a087e5a, 2015-11-21 (annotated)

Committer:
wim
Date:
Sat Nov 21 16:43:15 2015 +0000
Revision:
0:27f32a087e5a
Child:
1:1adf993a3e34
First version

Who changed what in which revision?

UserRevisionLine numberNew contents of line
wim 0:27f32a087e5a 1 /* mbed PT6964 Library, for PT6964 LED controller
wim 0:27f32a087e5a 2 * Copyright (c) 2015, v01: WH, Initial version
wim 0:27f32a087e5a 3 *
wim 0:27f32a087e5a 4 * Permission is hereby granted, free of charge, to any person obtaining a copy
wim 0:27f32a087e5a 5 * of this software and associated documentation files (the "Software"), to deal
wim 0:27f32a087e5a 6 * in the Software without restriction, including without limitation the rights
wim 0:27f32a087e5a 7 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
wim 0:27f32a087e5a 8 * copies of the Software, and to permit persons to whom the Software is
wim 0:27f32a087e5a 9 * furnished to do so, subject to the following conditions:
wim 0:27f32a087e5a 10 *
wim 0:27f32a087e5a 11 * The above copyright notice and this permission notice shall be included in
wim 0:27f32a087e5a 12 * all copies or substantial portions of the Software.
wim 0:27f32a087e5a 13 *
wim 0:27f32a087e5a 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
wim 0:27f32a087e5a 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
wim 0:27f32a087e5a 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
wim 0:27f32a087e5a 17 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
wim 0:27f32a087e5a 18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
wim 0:27f32a087e5a 19 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
wim 0:27f32a087e5a 20 * THE SOFTWARE.
wim 0:27f32a087e5a 21 */
wim 0:27f32a087e5a 22 #include "mbed.h"
wim 0:27f32a087e5a 23 #include "PT6964.h"
wim 0:27f32a087e5a 24 #include "Font_7Seg.h"
wim 0:27f32a087e5a 25
wim 0:27f32a087e5a 26 /** Constructor for class for driving PT6964 LED controller with SPI bus interface device.
wim 0:27f32a087e5a 27 * Note: the PT6964 is also available from other chipvendors eg AIP1628, HT1628, CM1628, SM1628
wim 0:27f32a087e5a 28 * @brief Supports 4 digits @ 13 segments or 5 digits @ 12 segments or 6 Digits @ 11 Segments or 7 Digits @ 10 Segments.
wim 0:27f32a087e5a 29 * Also supports a scanned keyboard of upto 20 keys.
wim 0:27f32a087e5a 30 *
wim 0:27f32a087e5a 31 * @param PinName mosi, miso, sclk, cs SPI bus pins
wim 0:27f32a087e5a 32 * @param Mode selects either 6 Digits of 12 Segments or 7 Digits of 10 Segments (default)
wim 0:27f32a087e5a 33 */
wim 0:27f32a087e5a 34 PT6964::PT6964(PinName mosi, PinName miso, PinName sclk, PinName cs, Mode mode) : _spi(mosi,miso,sclk), _cs(cs), _mode(mode) {
wim 0:27f32a087e5a 35
wim 0:27f32a087e5a 36 _init();
wim 0:27f32a087e5a 37 }
wim 0:27f32a087e5a 38
wim 0:27f32a087e5a 39 /** Init the SPI interface and the controller
wim 0:27f32a087e5a 40 * @param none
wim 0:27f32a087e5a 41 * @return none
wim 0:27f32a087e5a 42 */
wim 0:27f32a087e5a 43 void PT6964::_init(){
wim 0:27f32a087e5a 44
wim 0:27f32a087e5a 45 //init SPI
wim 0:27f32a087e5a 46 _cs=1;
wim 0:27f32a087e5a 47 _spi.format(8,3); //PT6964 uses mode 3 (Clock High on Idle, Data latched on second (=rising) edge)
wim 0:27f32a087e5a 48 _spi.frequency(500000);
wim 0:27f32a087e5a 49
wim 0:27f32a087e5a 50 //init controller
wim 0:27f32a087e5a 51 _writeCmd(PT6964_MODE_SET_CMD, _mode); // Mode set command
wim 0:27f32a087e5a 52
wim 0:27f32a087e5a 53 _display = PT6964_DSP_ON;
wim 0:27f32a087e5a 54 _bright = PT6964_BRT_DEF;
wim 0:27f32a087e5a 55 _writeCmd(PT6964_DSP_CTRL_CMD, _display | _bright ); // Display control cmd, display on/off, brightness
wim 0:27f32a087e5a 56
wim 0:27f32a087e5a 57 _writeCmd(PT6964_DATA_SET_CMD, PT6964_DATA_WR | PT6964_ADDR_INC | PT6964_MODE_NORM); // Data set cmd, normal mode, auto incr, write data
wim 0:27f32a087e5a 58 }
wim 0:27f32a087e5a 59
wim 0:27f32a087e5a 60
wim 0:27f32a087e5a 61 /** Clear the screen and locate to 0
wim 0:27f32a087e5a 62 */
wim 0:27f32a087e5a 63 void PT6964::cls() {
wim 0:27f32a087e5a 64
wim 0:27f32a087e5a 65 _cs=0;
wim 0:27f32a087e5a 66 wait_us(1);
wim 0:27f32a087e5a 67 _spi.write(_flip(PT6964_ADDR_SET_CMD | 0x00)); // Address set cmd, 0
wim 0:27f32a087e5a 68
wim 0:27f32a087e5a 69 for (int cnt=0; cnt<PT6964_DISPLAY_MEM; cnt++) {
wim 0:27f32a087e5a 70 _spi.write(0x00); // data
wim 0:27f32a087e5a 71 }
wim 0:27f32a087e5a 72
wim 0:27f32a087e5a 73 wait_us(1);
wim 0:27f32a087e5a 74 _cs=1;
wim 0:27f32a087e5a 75 }
wim 0:27f32a087e5a 76
wim 0:27f32a087e5a 77 /** Set Brightness
wim 0:27f32a087e5a 78 *
wim 0:27f32a087e5a 79 * @param char brightness (3 significant bits, valid range 0..7 (1/16 .. 14/14 dutycycle)
wim 0:27f32a087e5a 80 * @return none
wim 0:27f32a087e5a 81 */
wim 0:27f32a087e5a 82 void PT6964::setBrightness(char brightness){
wim 0:27f32a087e5a 83
wim 0:27f32a087e5a 84 _bright = brightness & PT6964_BRT_MSK; // mask invalid bits
wim 0:27f32a087e5a 85
wim 0:27f32a087e5a 86 _writeCmd(PT6964_DSP_CTRL_CMD, _display | _bright ); // Display control cmd, display on/off, brightness
wim 0:27f32a087e5a 87 }
wim 0:27f32a087e5a 88
wim 0:27f32a087e5a 89 /** Set the Display mode On/off
wim 0:27f32a087e5a 90 *
wim 0:27f32a087e5a 91 * @param bool display mode
wim 0:27f32a087e5a 92 */
wim 0:27f32a087e5a 93 void PT6964::setDisplay(bool on) {
wim 0:27f32a087e5a 94
wim 0:27f32a087e5a 95 if (on) {
wim 0:27f32a087e5a 96 _display = PT6964_DSP_ON;
wim 0:27f32a087e5a 97 }
wim 0:27f32a087e5a 98 else {
wim 0:27f32a087e5a 99 _display = PT6964_DSP_OFF;
wim 0:27f32a087e5a 100 }
wim 0:27f32a087e5a 101
wim 0:27f32a087e5a 102 _writeCmd(PT6964_DSP_CTRL_CMD, _display | _bright ); // Display control cmd, display on/off, brightness
wim 0:27f32a087e5a 103 }
wim 0:27f32a087e5a 104
wim 0:27f32a087e5a 105 /** Write databyte to PT6964
wim 0:27f32a087e5a 106 * @param int address display memory location to write byte
wim 0:27f32a087e5a 107 * @param char data byte written at given address
wim 0:27f32a087e5a 108 * @return none
wim 0:27f32a087e5a 109 */
wim 0:27f32a087e5a 110 void PT6964::writeData(int address, char data) {
wim 0:27f32a087e5a 111 _cs=0;
wim 0:27f32a087e5a 112 wait_us(1);
wim 0:27f32a087e5a 113 _spi.write(_flip(PT6964_ADDR_SET_CMD | (address & PT6964_ADDR_MSK))); // Set Address cmd
wim 0:27f32a087e5a 114
wim 0:27f32a087e5a 115 _spi.write(_flip(data)); // data
wim 0:27f32a087e5a 116
wim 0:27f32a087e5a 117 wait_us(1);
wim 0:27f32a087e5a 118 _cs=1;
wim 0:27f32a087e5a 119 }
wim 0:27f32a087e5a 120
wim 0:27f32a087e5a 121 /** Write Display datablock to PT6964
wim 0:27f32a087e5a 122 * @param DisplayData_t data Array of PT6964_DISPLAY_MEM (=14) bytes for displaydata (starting at address 0)
wim 0:27f32a087e5a 123 * @param length number bytes to write (valide range 0..PT6964_DISPLAY_MEM (=14), starting at address 0)
wim 0:27f32a087e5a 124 * @return none
wim 0:27f32a087e5a 125 */
wim 0:27f32a087e5a 126 void PT6964::writeData(DisplayData_t data, int length) {
wim 0:27f32a087e5a 127 _cs=0;
wim 0:27f32a087e5a 128 wait_us(1);
wim 0:27f32a087e5a 129 _spi.write(_flip(PT6964_ADDR_SET_CMD | 0x00)); // Set Address at 0
wim 0:27f32a087e5a 130
wim 0:27f32a087e5a 131 // sanity check
wim 0:27f32a087e5a 132 if (length < 0) {length = 0;}
wim 0:27f32a087e5a 133 if (length > PT6964_DISPLAY_MEM) {length = PT6964_DISPLAY_MEM;}
wim 0:27f32a087e5a 134
wim 0:27f32a087e5a 135 // for (int idx=0; idx<PT6964_DISPLAY_MEM; idx++) {
wim 0:27f32a087e5a 136 for (int idx=0; idx<length; idx++) {
wim 0:27f32a087e5a 137 _spi.write(_flip(data[idx])); // data
wim 0:27f32a087e5a 138 }
wim 0:27f32a087e5a 139
wim 0:27f32a087e5a 140 wait_us(1);
wim 0:27f32a087e5a 141 _cs=1;
wim 0:27f32a087e5a 142 }
wim 0:27f32a087e5a 143
wim 0:27f32a087e5a 144
wim 0:27f32a087e5a 145 /** Read keydata block from PT6964
wim 0:27f32a087e5a 146 * @param *keydata Ptr to Array of PT6964_KEY_MEM (=5) bytes for keydata
wim 0:27f32a087e5a 147 * @return bool keypress True when at least one key was pressed
wim 0:27f32a087e5a 148 *
wim 0:27f32a087e5a 149 * Note: Due to the hardware configuration the PT6964 key matrix scanner will detect multiple keys pressed at same time,
wim 0:27f32a087e5a 150 * but this may also result in some spurious keys being set in keypress data array.
wim 0:27f32a087e5a 151 * It may be best to ignore all keys in those situations. That option is implemented in this method depending on #define setting.
wim 0:27f32a087e5a 152 */
wim 0:27f32a087e5a 153 bool PT6964::getKeys(KeyData_t *keydata) {
wim 0:27f32a087e5a 154 int keypress = 0;
wim 0:27f32a087e5a 155 char data;
wim 0:27f32a087e5a 156
wim 0:27f32a087e5a 157 // Read keys
wim 0:27f32a087e5a 158 _cs=0;
wim 0:27f32a087e5a 159 wait_us(1);
wim 0:27f32a087e5a 160
wim 0:27f32a087e5a 161 // Enable Key Read mode
wim 0:27f32a087e5a 162 _spi.write(_flip(PT6964_DATA_SET_CMD | PT6964_KEY_RD | PT6964_ADDR_INC | PT6964_MODE_NORM)); // Data set cmd, normal mode, auto incr, read data
wim 0:27f32a087e5a 163
wim 0:27f32a087e5a 164 for (int idx=0; idx < PT6964_KEY_MEM; idx++) {
wim 0:27f32a087e5a 165 data = _flip(_spi.write(0xFF)); // read keys and correct bitorder
wim 0:27f32a087e5a 166
wim 0:27f32a087e5a 167 if (data != 0) { // Check for any pressed key
wim 0:27f32a087e5a 168 for (int bit=0; bit < PT6964_KEY_BITS; bit++) {
wim 0:27f32a087e5a 169 if (data & (1 << bit)) {keypress++;} // Test all significant bits
wim 0:27f32a087e5a 170 }
wim 0:27f32a087e5a 171 }
wim 0:27f32a087e5a 172
wim 0:27f32a087e5a 173 (*keydata)[idx] = data; // Store keydata after correcting bitorder
wim 0:27f32a087e5a 174 }
wim 0:27f32a087e5a 175
wim 0:27f32a087e5a 176 wait_us(1);
wim 0:27f32a087e5a 177 _cs=1;
wim 0:27f32a087e5a 178
wim 0:27f32a087e5a 179 // Restore Data Write mode
wim 0:27f32a087e5a 180 _writeCmd(PT6964_DATA_SET_CMD, PT6964_DATA_WR | PT6964_ADDR_INC | PT6964_MODE_NORM); // Data set cmd, normal mode, auto incr, write data
wim 0:27f32a087e5a 181
wim 0:27f32a087e5a 182 #if(1)
wim 0:27f32a087e5a 183 // Dismiss multiple keypresses at same time
wim 0:27f32a087e5a 184 return (keypress == 1);
wim 0:27f32a087e5a 185 #else
wim 0:27f32a087e5a 186 // Allow multiple keypress and accept possible spurious keys
wim 0:27f32a087e5a 187 return (keypress > 0);
wim 0:27f32a087e5a 188 #endif
wim 0:27f32a087e5a 189 }
wim 0:27f32a087e5a 190
wim 0:27f32a087e5a 191
wim 0:27f32a087e5a 192 /** Helper to reverse all command or databits. The PT6964 expects LSB first, whereas SPI is MSB first
wim 0:27f32a087e5a 193 * @param char data
wim 0:27f32a087e5a 194 * @return bitreversed data
wim 0:27f32a087e5a 195 */
wim 0:27f32a087e5a 196 char PT6964::_flip(char data) {
wim 0:27f32a087e5a 197 char value=0;
wim 0:27f32a087e5a 198
wim 0:27f32a087e5a 199 if (data & 0x01) {value |= 0x80;} ;
wim 0:27f32a087e5a 200 if (data & 0x02) {value |= 0x40;} ;
wim 0:27f32a087e5a 201 if (data & 0x04) {value |= 0x20;} ;
wim 0:27f32a087e5a 202 if (data & 0x08) {value |= 0x10;} ;
wim 0:27f32a087e5a 203 if (data & 0x10) {value |= 0x08;} ;
wim 0:27f32a087e5a 204 if (data & 0x20) {value |= 0x04;} ;
wim 0:27f32a087e5a 205 if (data & 0x40) {value |= 0x02;} ;
wim 0:27f32a087e5a 206 if (data & 0x80) {value |= 0x01;} ;
wim 0:27f32a087e5a 207 return value;
wim 0:27f32a087e5a 208 }
wim 0:27f32a087e5a 209
wim 0:27f32a087e5a 210
wim 0:27f32a087e5a 211 /** Write command and parameter to PT6964
wim 0:27f32a087e5a 212 * @param int cmd Command byte
wim 0:27f32a087e5a 213 * &Param int data Parameters for command
wim 0:27f32a087e5a 214 * @return none
wim 0:27f32a087e5a 215 */
wim 0:27f32a087e5a 216 void PT6964::_writeCmd(int cmd, int data){
wim 0:27f32a087e5a 217
wim 0:27f32a087e5a 218 _cs=0;
wim 0:27f32a087e5a 219 wait_us(1);
wim 0:27f32a087e5a 220 // _spi.write(_flip( (cmd & 0xF0) | (data & 0x0F)));
wim 0:27f32a087e5a 221 _spi.write(_flip( (cmd & PT6964_CMD_MSK) | (data & ~PT6964_CMD_MSK)));
wim 0:27f32a087e5a 222
wim 0:27f32a087e5a 223 wait_us(1);
wim 0:27f32a087e5a 224 _cs=1;
wim 0:27f32a087e5a 225 }
wim 0:27f32a087e5a 226
wim 0:27f32a087e5a 227
wim 0:27f32a087e5a 228
wim 0:27f32a087e5a 229
wim 0:27f32a087e5a 230 /** Constructor for class for driving Princeton PT6964 controller as used in DVD538A
wim 0:27f32a087e5a 231 *
wim 0:27f32a087e5a 232 * @brief Supports 4 Digits of 7 Segments, 1 Grid of 9 Icons. Also supports a scanned keyboard of 4.
wim 0:27f32a087e5a 233 *
wim 0:27f32a087e5a 234 * @param PinName mosi, miso, sclk, cs SPI bus pins
wim 0:27f32a087e5a 235 */
wim 0:27f32a087e5a 236 PT6964_DVD538A::PT6964_DVD538A(PinName mosi, PinName miso, PinName sclk, PinName cs) : PT6964(mosi, miso, sclk, cs, Grid7_Seg10) {
wim 0:27f32a087e5a 237 _column = 0;
wim 0:27f32a087e5a 238 _columns = DVD538A_NR_DIGITS;
wim 0:27f32a087e5a 239 }
wim 0:27f32a087e5a 240
wim 0:27f32a087e5a 241 #if(0)
wim 0:27f32a087e5a 242 #if DOXYGEN_ONLY
wim 0:27f32a087e5a 243 /** Write a character to the Display
wim 0:27f32a087e5a 244 *
wim 0:27f32a087e5a 245 * @param c The character to write to the display
wim 0:27f32a087e5a 246 */
wim 0:27f32a087e5a 247 int putc(int c);
wim 0:27f32a087e5a 248
wim 0:27f32a087e5a 249 /** Write a formatted string to the Display
wim 0:27f32a087e5a 250 *
wim 0:27f32a087e5a 251 * @param format A printf-style format string, followed by the
wim 0:27f32a087e5a 252 * variables to use in formatting the string.
wim 0:27f32a087e5a 253 */
wim 0:27f32a087e5a 254 int printf(const char* format, ...);
wim 0:27f32a087e5a 255 #endif
wim 0:27f32a087e5a 256 #endif
wim 0:27f32a087e5a 257
wim 0:27f32a087e5a 258 /** Locate cursor to a screen column
wim 0:27f32a087e5a 259 *
wim 0:27f32a087e5a 260 * @param column The horizontal position from the left, indexed from 0
wim 0:27f32a087e5a 261 */
wim 0:27f32a087e5a 262 void PT6964_DVD538A::locate(int column) {
wim 0:27f32a087e5a 263 //sanity check
wim 0:27f32a087e5a 264 if (column < 0) {column = 0;}
wim 0:27f32a087e5a 265 if (column > (_columns - 1)) {column = _columns - 1;}
wim 0:27f32a087e5a 266
wim 0:27f32a087e5a 267 _column = column;
wim 0:27f32a087e5a 268 }
wim 0:27f32a087e5a 269
wim 0:27f32a087e5a 270
wim 0:27f32a087e5a 271 /** Number of screen columns
wim 0:27f32a087e5a 272 *
wim 0:27f32a087e5a 273 * @param none
wim 0:27f32a087e5a 274 * @return columns
wim 0:27f32a087e5a 275 */
wim 0:27f32a087e5a 276 int PT6964_DVD538A::columns() {
wim 0:27f32a087e5a 277 return _columns;
wim 0:27f32a087e5a 278 }
wim 0:27f32a087e5a 279
wim 0:27f32a087e5a 280
wim 0:27f32a087e5a 281 /** Clear the screen and locate to 0
wim 0:27f32a087e5a 282 */
wim 0:27f32a087e5a 283 void PT6964_DVD538A::cls() {
wim 0:27f32a087e5a 284
wim 0:27f32a087e5a 285 #if(0)
wim 0:27f32a087e5a 286 //clear local buffer (including Icons)
wim 0:27f32a087e5a 287 for (int idx = 0; idx < DVD538A_NR_GRIDS; idx++) {
wim 0:27f32a087e5a 288 _displaybuffer[(idx<<1)] = 0x00;
wim 0:27f32a087e5a 289 _displaybuffer[(idx<<1) + 1] = 0x00;
wim 0:27f32a087e5a 290 }
wim 0:27f32a087e5a 291 #else
wim 0:27f32a087e5a 292 //clear local buffer (preserving Icons)
wim 0:27f32a087e5a 293 for (int idx = DVD538A_DIG1_IDX; idx < (DVD538A_DIG1_IDX + DVD538A_NR_DIGITS); idx++) {
wim 0:27f32a087e5a 294 _displaybuffer[(idx<<1)] = _displaybuffer[(idx<<1)] & LO(S_ICON_MSK);
wim 0:27f32a087e5a 295 _displaybuffer[(idx<<1) + 1] = _displaybuffer[(idx<<1) + 1] & HI(S_ICON_MSK);
wim 0:27f32a087e5a 296 }
wim 0:27f32a087e5a 297 #endif
wim 0:27f32a087e5a 298
wim 0:27f32a087e5a 299 writeData(_displaybuffer, (DVD538A_NR_GRIDS*2));
wim 0:27f32a087e5a 300
wim 0:27f32a087e5a 301 _column = 0;
wim 0:27f32a087e5a 302 }
wim 0:27f32a087e5a 303
wim 0:27f32a087e5a 304 /** Set Icon
wim 0:27f32a087e5a 305 *
wim 0:27f32a087e5a 306 * @param Icon icon Enums Icon has Grid position encoded in 16 MSBs, Icon pattern encoded in 16 LSBs
wim 0:27f32a087e5a 307 * @return none
wim 0:27f32a087e5a 308 */
wim 0:27f32a087e5a 309 void PT6964_DVD538A::setIcon(Icon icon) {
wim 0:27f32a087e5a 310 int addr, icn;
wim 0:27f32a087e5a 311
wim 0:27f32a087e5a 312 icn = icon & 0xFFFF;
wim 0:27f32a087e5a 313 addr = ((icon >> 16) & 0xFFFF) - 1;
wim 0:27f32a087e5a 314
wim 0:27f32a087e5a 315 //Save char...and set bits for icon to write
wim 0:27f32a087e5a 316 _displaybuffer[addr] = _displaybuffer[addr] | LO(icn);
wim 0:27f32a087e5a 317 _displaybuffer[addr+1] = _displaybuffer[addr+1] | HI(icn);
wim 0:27f32a087e5a 318 writeData(_displaybuffer, (DVD538A_NR_GRIDS*2));
wim 0:27f32a087e5a 319 }
wim 0:27f32a087e5a 320
wim 0:27f32a087e5a 321 /** Clr Icon
wim 0:27f32a087e5a 322 *
wim 0:27f32a087e5a 323 * @param Icon icon Enums Icon has Grid position encoded in 16 MSBs, Icon pattern encoded in 16 LSBs
wim 0:27f32a087e5a 324 * @return none
wim 0:27f32a087e5a 325 */
wim 0:27f32a087e5a 326 void PT6964_DVD538A::clrIcon(Icon icon) {
wim 0:27f32a087e5a 327 int addr, icn;
wim 0:27f32a087e5a 328
wim 0:27f32a087e5a 329 icn = icon & 0xFFFF;
wim 0:27f32a087e5a 330 addr = ((icon >> 16) & 0xFFFF) - 1;
wim 0:27f32a087e5a 331
wim 0:27f32a087e5a 332 //Save char...and clr bits for icon to write
wim 0:27f32a087e5a 333 _displaybuffer[addr] = _displaybuffer[addr] & ~LO(icn);
wim 0:27f32a087e5a 334 _displaybuffer[addr+1] = _displaybuffer[addr+1] & ~HI(icn);
wim 0:27f32a087e5a 335 writeData(_displaybuffer, (DVD538A_NR_GRIDS*2));
wim 0:27f32a087e5a 336 }
wim 0:27f32a087e5a 337
wim 0:27f32a087e5a 338
wim 0:27f32a087e5a 339 /** Set User Defined Characters (UDC)
wim 0:27f32a087e5a 340 *
wim 0:27f32a087e5a 341 * @param unsigned char udc_idx The Index of the UDC (0..7)
wim 0:27f32a087e5a 342 * @param int udc_data The bitpattern for the UDC (16 bits)
wim 0:27f32a087e5a 343 */
wim 0:27f32a087e5a 344 void PT6964_DVD538A::setUDC(unsigned char udc_idx, int udc_data) {
wim 0:27f32a087e5a 345
wim 0:27f32a087e5a 346 //Sanity check
wim 0:27f32a087e5a 347 if (udc_idx > (DVD538A_NR_UDC-1)) {
wim 0:27f32a087e5a 348 return;
wim 0:27f32a087e5a 349 }
wim 0:27f32a087e5a 350 // Mask out Icon bits?
wim 0:27f32a087e5a 351
wim 0:27f32a087e5a 352 _UDC_16S[udc_idx][0] = LO(udc_data);
wim 0:27f32a087e5a 353 _UDC_16S[udc_idx][1] = HI(udc_data);
wim 0:27f32a087e5a 354 }
wim 0:27f32a087e5a 355
wim 0:27f32a087e5a 356 /** Write a single character (Stream implementation)
wim 0:27f32a087e5a 357 */
wim 0:27f32a087e5a 358 int PT6964_DVD538A::_putc(int value) {
wim 0:27f32a087e5a 359 int addr;
wim 0:27f32a087e5a 360
wim 0:27f32a087e5a 361 if ((value == '\n') || (value == '\r')) {
wim 0:27f32a087e5a 362 //No character to write
wim 0:27f32a087e5a 363
wim 0:27f32a087e5a 364 //Update Cursor
wim 0:27f32a087e5a 365 _column = 0;
wim 0:27f32a087e5a 366 }
wim 0:27f32a087e5a 367 else if ((value >= 0) && (value < DVD538A_NR_UDC)) {
wim 0:27f32a087e5a 368 //Character to write
wim 0:27f32a087e5a 369 addr = (DVD538A_DIG1_IDX + ((DVD538A_NR_DIGITS - 1) - _column)) << 1;
wim 0:27f32a087e5a 370
wim 0:27f32a087e5a 371 //Save icons...and set bits for character to write
wim 0:27f32a087e5a 372 _displaybuffer[addr] = (_displaybuffer[addr] & LO(S_ICON_MSK)) | _UDC_16S[value][0];
wim 0:27f32a087e5a 373 _displaybuffer[addr+1] = (_displaybuffer[addr+1] & HI(S_ICON_MSK)) | _UDC_16S[value][1];
wim 0:27f32a087e5a 374 writeData(_displaybuffer, (DVD538A_NR_GRIDS*2));
wim 0:27f32a087e5a 375
wim 0:27f32a087e5a 376 //Update Cursor
wim 0:27f32a087e5a 377 _column++;
wim 0:27f32a087e5a 378 if (_column > (DVD538A_NR_DIGITS - 1)) {
wim 0:27f32a087e5a 379 _column = 0;
wim 0:27f32a087e5a 380 }
wim 0:27f32a087e5a 381 }
wim 0:27f32a087e5a 382 else if ((value >= (int)'0') && (value <= (int) '9')) {
wim 0:27f32a087e5a 383 //Character to write
wim 0:27f32a087e5a 384 value = value - (int) '0';
wim 0:27f32a087e5a 385 addr = (DVD538A_DIG1_IDX + ((DVD538A_NR_DIGITS - 1) - _column)) << 1;
wim 0:27f32a087e5a 386
wim 0:27f32a087e5a 387 //Save icons...and set bits for character to write
wim 0:27f32a087e5a 388 _displaybuffer[addr] = (_displaybuffer[addr] & LO(S_ICON_MSK)) | FONT_7S[value][0];
wim 0:27f32a087e5a 389 _displaybuffer[addr+1] = (_displaybuffer[addr+1] & HI(S_ICON_MSK)) | FONT_7S[value][1];
wim 0:27f32a087e5a 390 writeData(_displaybuffer, (DVD538A_NR_GRIDS*2));
wim 0:27f32a087e5a 391
wim 0:27f32a087e5a 392 //Update Cursor
wim 0:27f32a087e5a 393 _column++;
wim 0:27f32a087e5a 394 if (_column > (DVD538A_NR_DIGITS - 1)) {
wim 0:27f32a087e5a 395 _column = 0;
wim 0:27f32a087e5a 396 }
wim 0:27f32a087e5a 397 }
wim 0:27f32a087e5a 398 else if ((value >= (int) 'A') && (value <= (int) 'F')) {
wim 0:27f32a087e5a 399 //Character to write
wim 0:27f32a087e5a 400 value = 10 + value - (int) 'A';
wim 0:27f32a087e5a 401 addr = (DVD538A_DIG1_IDX + ((DVD538A_NR_DIGITS - 1) - _column)) << 1;
wim 0:27f32a087e5a 402
wim 0:27f32a087e5a 403 //Save icons...and set bits for character to write
wim 0:27f32a087e5a 404 _displaybuffer[addr] = (_displaybuffer[addr] & LO(S_ICON_MSK)) | FONT_7S[value][0];
wim 0:27f32a087e5a 405 _displaybuffer[addr+1] = (_displaybuffer[addr+1] & HI(S_ICON_MSK)) | FONT_7S[value][1];
wim 0:27f32a087e5a 406 writeData(_displaybuffer, (DVD538A_NR_GRIDS*2));
wim 0:27f32a087e5a 407
wim 0:27f32a087e5a 408 //Update Cursor
wim 0:27f32a087e5a 409 _column++;
wim 0:27f32a087e5a 410 if (_column > (DVD538A_NR_DIGITS - 1)) {
wim 0:27f32a087e5a 411 _column = 0;
wim 0:27f32a087e5a 412 }
wim 0:27f32a087e5a 413 }
wim 0:27f32a087e5a 414 else if ((value >= (int) 'a') && (value <= (int) 'f')) {
wim 0:27f32a087e5a 415 //Character to write
wim 0:27f32a087e5a 416 value = 10 + value - (int) 'a';
wim 0:27f32a087e5a 417 addr = (DVD538A_DIG1_IDX + ((DVD538A_NR_DIGITS - 1) - _column)) << 1;
wim 0:27f32a087e5a 418
wim 0:27f32a087e5a 419 //Save icons...and set bits for character to write
wim 0:27f32a087e5a 420 _displaybuffer[addr] = (_displaybuffer[addr] & LO(S_ICON_MSK)) | FONT_7S[value][0];
wim 0:27f32a087e5a 421 _displaybuffer[addr+1] = (_displaybuffer[addr+1] & HI(S_ICON_MSK)) | FONT_7S[value][1];
wim 0:27f32a087e5a 422 writeData(_displaybuffer, (DVD538A_NR_GRIDS*2));
wim 0:27f32a087e5a 423
wim 0:27f32a087e5a 424 //Update Cursor
wim 0:27f32a087e5a 425 _column++;
wim 0:27f32a087e5a 426 if (_column > (DVD538A_NR_DIGITS - 1)) {
wim 0:27f32a087e5a 427 _column = 0;
wim 0:27f32a087e5a 428 }
wim 0:27f32a087e5a 429
wim 0:27f32a087e5a 430 } //else
wim 0:27f32a087e5a 431
wim 0:27f32a087e5a 432 return value;
wim 0:27f32a087e5a 433 }
wim 0:27f32a087e5a 434
wim 0:27f32a087e5a 435
wim 0:27f32a087e5a 436 // get a single character (Stream implementation)
wim 0:27f32a087e5a 437 int PT6964_DVD538A::_getc() {
wim 0:27f32a087e5a 438 return -1;
wim 0:27f32a087e5a 439 }