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@2:eaf2f5d1af34, 2016-01-14 (annotated)

Committer:
wim
Date:
Thu Jan 14 20:09:52 2016 +0000
Revision:
2:eaf2f5d1af34
Parent:
1:1adf993a3e34 
Refactored display and keyboard defines

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 1:1adf993a3e34 3 * 2015, v02: WH, rename Digit/Grid
wim 1:1adf993a3e34 4 * 2016, v03: WH, updated Icon handling, UDCs and _putc()
wim 2:eaf2f5d1af34 5 * 2016, v04: WH, Refactored display and keyboard defines
wim 0:27f32a087e5a 6 *
wim 0:27f32a087e5a 7 * Permission is hereby granted, free of charge, to any person obtaining a copy
wim 0:27f32a087e5a 8 * of this software and associated documentation files (the "Software"), to deal
wim 0:27f32a087e5a 9 * in the Software without restriction, including without limitation the rights
wim 0:27f32a087e5a 10 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
wim 0:27f32a087e5a 11 * copies of the Software, and to permit persons to whom the Software is
wim 0:27f32a087e5a 12 * furnished to do so, subject to the following conditions:
wim 0:27f32a087e5a 13 *
wim 0:27f32a087e5a 14 * The above copyright notice and this permission notice shall be included in
wim 0:27f32a087e5a 15 * all copies or substantial portions of the Software.
wim 0:27f32a087e5a 16 *
wim 0:27f32a087e5a 17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
wim 0:27f32a087e5a 18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
wim 0:27f32a087e5a 19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
wim 0:27f32a087e5a 20 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
wim 0:27f32a087e5a 21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
wim 0:27f32a087e5a 22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
wim 0:27f32a087e5a 23 * THE SOFTWARE.
wim 0:27f32a087e5a 24 */
wim 0:27f32a087e5a 25 #include "mbed.h"
wim 0:27f32a087e5a 26 #include "PT6964.h"
wim 0:27f32a087e5a 27 #include "Font_7Seg.h"
wim 0:27f32a087e5a 28
wim 0:27f32a087e5a 29 /** Constructor for class for driving PT6964 LED controller with SPI bus interface device.
wim 0:27f32a087e5a 30 * Note: the PT6964 is also available from other chipvendors eg AIP1628, HT1628, CM1628, SM1628
wim 0:27f32a087e5a 31 * @brief Supports 4 digits @ 13 segments or 5 digits @ 12 segments or 6 Digits @ 11 Segments or 7 Digits @ 10 Segments.
wim 0:27f32a087e5a 32 * Also supports a scanned keyboard of upto 20 keys.
wim 0:27f32a087e5a 33 *
wim 0:27f32a087e5a 34 * @param PinName mosi, miso, sclk, cs SPI bus pins
wim 0:27f32a087e5a 35 * @param Mode selects either 6 Digits of 12 Segments or 7 Digits of 10 Segments (default)
wim 0:27f32a087e5a 36 */
wim 0:27f32a087e5a 37 PT6964::PT6964(PinName mosi, PinName miso, PinName sclk, PinName cs, Mode mode) : _spi(mosi,miso,sclk), _cs(cs), _mode(mode) {
wim 0:27f32a087e5a 38
wim 0:27f32a087e5a 39 _init();
wim 0:27f32a087e5a 40 }
wim 0:27f32a087e5a 41
wim 0:27f32a087e5a 42 /** Init the SPI interface and the controller
wim 0:27f32a087e5a 43 * @param none
wim 0:27f32a087e5a 44 * @return none
wim 0:27f32a087e5a 45 */
wim 0:27f32a087e5a 46 void PT6964::_init(){
wim 0:27f32a087e5a 47
wim 0:27f32a087e5a 48 //init SPI
wim 0:27f32a087e5a 49 _cs=1;
wim 0:27f32a087e5a 50 _spi.format(8,3); //PT6964 uses mode 3 (Clock High on Idle, Data latched on second (=rising) edge)
wim 0:27f32a087e5a 51 _spi.frequency(500000);
wim 0:27f32a087e5a 52
wim 0:27f32a087e5a 53 //init controller
wim 0:27f32a087e5a 54 _writeCmd(PT6964_MODE_SET_CMD, _mode); // Mode set command
wim 0:27f32a087e5a 55
wim 0:27f32a087e5a 56 _display = PT6964_DSP_ON;
wim 0:27f32a087e5a 57 _bright = PT6964_BRT_DEF;
wim 0:27f32a087e5a 58 _writeCmd(PT6964_DSP_CTRL_CMD, _display | _bright ); // Display control cmd, display on/off, brightness
wim 0:27f32a087e5a 59
wim 0:27f32a087e5a 60 _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 61 }
wim 0:27f32a087e5a 62
wim 0:27f32a087e5a 63
wim 0:27f32a087e5a 64 /** Clear the screen and locate to 0
wim 0:27f32a087e5a 65 */
wim 0:27f32a087e5a 66 void PT6964::cls() {
wim 0:27f32a087e5a 67
wim 0:27f32a087e5a 68 _cs=0;
wim 0:27f32a087e5a 69 wait_us(1);
wim 0:27f32a087e5a 70 _spi.write(_flip(PT6964_ADDR_SET_CMD | 0x00)); // Address set cmd, 0
wim 0:27f32a087e5a 71
wim 0:27f32a087e5a 72 for (int cnt=0; cnt<PT6964_DISPLAY_MEM; cnt++) {
wim 0:27f32a087e5a 73 _spi.write(0x00); // data
wim 0:27f32a087e5a 74 }
wim 0:27f32a087e5a 75
wim 0:27f32a087e5a 76 wait_us(1);
wim 0:27f32a087e5a 77 _cs=1;
wim 0:27f32a087e5a 78 }
wim 0:27f32a087e5a 79
wim 0:27f32a087e5a 80 /** Set Brightness
wim 0:27f32a087e5a 81 *
wim 0:27f32a087e5a 82 * @param char brightness (3 significant bits, valid range 0..7 (1/16 .. 14/14 dutycycle)
wim 0:27f32a087e5a 83 * @return none
wim 0:27f32a087e5a 84 */
wim 0:27f32a087e5a 85 void PT6964::setBrightness(char brightness){
wim 0:27f32a087e5a 86
wim 0:27f32a087e5a 87 _bright = brightness & PT6964_BRT_MSK; // mask invalid bits
wim 0:27f32a087e5a 88
wim 0:27f32a087e5a 89 _writeCmd(PT6964_DSP_CTRL_CMD, _display | _bright ); // Display control cmd, display on/off, brightness
wim 0:27f32a087e5a 90 }
wim 0:27f32a087e5a 91
wim 0:27f32a087e5a 92 /** Set the Display mode On/off
wim 0:27f32a087e5a 93 *
wim 0:27f32a087e5a 94 * @param bool display mode
wim 0:27f32a087e5a 95 */
wim 0:27f32a087e5a 96 void PT6964::setDisplay(bool on) {
wim 0:27f32a087e5a 97
wim 0:27f32a087e5a 98 if (on) {
wim 0:27f32a087e5a 99 _display = PT6964_DSP_ON;
wim 0:27f32a087e5a 100 }
wim 0:27f32a087e5a 101 else {
wim 0:27f32a087e5a 102 _display = PT6964_DSP_OFF;
wim 0:27f32a087e5a 103 }
wim 0:27f32a087e5a 104
wim 0:27f32a087e5a 105 _writeCmd(PT6964_DSP_CTRL_CMD, _display | _bright ); // Display control cmd, display on/off, brightness
wim 0:27f32a087e5a 106 }
wim 0:27f32a087e5a 107
wim 0:27f32a087e5a 108 /** Write databyte to PT6964
wim 0:27f32a087e5a 109 * @param int address display memory location to write byte
wim 0:27f32a087e5a 110 * @param char data byte written at given address
wim 0:27f32a087e5a 111 * @return none
wim 0:27f32a087e5a 112 */
wim 0:27f32a087e5a 113 void PT6964::writeData(int address, char data) {
wim 0:27f32a087e5a 114 _cs=0;
wim 0:27f32a087e5a 115 wait_us(1);
wim 0:27f32a087e5a 116 _spi.write(_flip(PT6964_ADDR_SET_CMD | (address & PT6964_ADDR_MSK))); // Set Address cmd
wim 0:27f32a087e5a 117
wim 0:27f32a087e5a 118 _spi.write(_flip(data)); // data
wim 0:27f32a087e5a 119
wim 0:27f32a087e5a 120 wait_us(1);
wim 0:27f32a087e5a 121 _cs=1;
wim 0:27f32a087e5a 122 }
wim 0:27f32a087e5a 123
wim 0:27f32a087e5a 124 /** Write Display datablock to PT6964
wim 0:27f32a087e5a 125 * @param DisplayData_t data Array of PT6964_DISPLAY_MEM (=14) bytes for displaydata (starting at address 0)
wim 0:27f32a087e5a 126 * @param length number bytes to write (valide range 0..PT6964_DISPLAY_MEM (=14), starting at address 0)
wim 0:27f32a087e5a 127 * @return none
wim 0:27f32a087e5a 128 */
wim 0:27f32a087e5a 129 void PT6964::writeData(DisplayData_t data, int length) {
wim 0:27f32a087e5a 130 _cs=0;
wim 0:27f32a087e5a 131 wait_us(1);
wim 0:27f32a087e5a 132 _spi.write(_flip(PT6964_ADDR_SET_CMD | 0x00)); // Set Address at 0
wim 0:27f32a087e5a 133
wim 0:27f32a087e5a 134 // sanity check
wim 0:27f32a087e5a 135 if (length < 0) {length = 0;}
wim 0:27f32a087e5a 136 if (length > PT6964_DISPLAY_MEM) {length = PT6964_DISPLAY_MEM;}
wim 0:27f32a087e5a 137
wim 0:27f32a087e5a 138 // for (int idx=0; idx<PT6964_DISPLAY_MEM; idx++) {
wim 0:27f32a087e5a 139 for (int idx=0; idx<length; idx++) {
wim 0:27f32a087e5a 140 _spi.write(_flip(data[idx])); // data
wim 0:27f32a087e5a 141 }
wim 0:27f32a087e5a 142
wim 0:27f32a087e5a 143 wait_us(1);
wim 0:27f32a087e5a 144 _cs=1;
wim 0:27f32a087e5a 145 }
wim 0:27f32a087e5a 146
wim 0:27f32a087e5a 147
wim 0:27f32a087e5a 148 /** Read keydata block from PT6964
wim 0:27f32a087e5a 149 * @param *keydata Ptr to Array of PT6964_KEY_MEM (=5) bytes for keydata
wim 0:27f32a087e5a 150 * @return bool keypress True when at least one key was pressed
wim 0:27f32a087e5a 151 *
wim 0:27f32a087e5a 152 * Note: Due to the hardware configuration the PT6964 key matrix scanner will detect multiple keys pressed at same time,
wim 0:27f32a087e5a 153 * but this may also result in some spurious keys being set in keypress data array.
wim 0:27f32a087e5a 154 * 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 155 */
wim 0:27f32a087e5a 156 bool PT6964::getKeys(KeyData_t *keydata) {
wim 0:27f32a087e5a 157 int keypress = 0;
wim 0:27f32a087e5a 158 char data;
wim 0:27f32a087e5a 159
wim 0:27f32a087e5a 160 // Read keys
wim 0:27f32a087e5a 161 _cs=0;
wim 0:27f32a087e5a 162 wait_us(1);
wim 0:27f32a087e5a 163
wim 0:27f32a087e5a 164 // Enable Key Read mode
wim 0:27f32a087e5a 165 _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 166
wim 0:27f32a087e5a 167 for (int idx=0; idx < PT6964_KEY_MEM; idx++) {
wim 0:27f32a087e5a 168 data = _flip(_spi.write(0xFF)); // read keys and correct bitorder
wim 0:27f32a087e5a 169
wim 2:eaf2f5d1af34 170 data = data & PT6964_KEY_MSK; // Mask valid bits
wim 0:27f32a087e5a 171 if (data != 0) { // Check for any pressed key
wim 2:eaf2f5d1af34 172 for (int bit=0; bit < 8; bit++) {
wim 0:27f32a087e5a 173 if (data & (1 << bit)) {keypress++;} // Test all significant bits
wim 0:27f32a087e5a 174 }
wim 0:27f32a087e5a 175 }
wim 0:27f32a087e5a 176
wim 0:27f32a087e5a 177 (*keydata)[idx] = data; // Store keydata after correcting bitorder
wim 0:27f32a087e5a 178 }
wim 0:27f32a087e5a 179
wim 0:27f32a087e5a 180 wait_us(1);
wim 0:27f32a087e5a 181 _cs=1;
wim 0:27f32a087e5a 182
wim 0:27f32a087e5a 183 // Restore Data Write mode
wim 0:27f32a087e5a 184 _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 185
wim 0:27f32a087e5a 186 #if(1)
wim 0:27f32a087e5a 187 // Dismiss multiple keypresses at same time
wim 0:27f32a087e5a 188 return (keypress == 1);
wim 0:27f32a087e5a 189 #else
wim 0:27f32a087e5a 190 // Allow multiple keypress and accept possible spurious keys
wim 0:27f32a087e5a 191 return (keypress > 0);
wim 0:27f32a087e5a 192 #endif
wim 0:27f32a087e5a 193 }
wim 0:27f32a087e5a 194
wim 0:27f32a087e5a 195
wim 0:27f32a087e5a 196 /** Helper to reverse all command or databits. The PT6964 expects LSB first, whereas SPI is MSB first
wim 0:27f32a087e5a 197 * @param char data
wim 0:27f32a087e5a 198 * @return bitreversed data
wim 0:27f32a087e5a 199 */
wim 0:27f32a087e5a 200 char PT6964::_flip(char data) {
wim 0:27f32a087e5a 201 char value=0;
wim 0:27f32a087e5a 202
wim 0:27f32a087e5a 203 if (data & 0x01) {value |= 0x80;} ;
wim 0:27f32a087e5a 204 if (data & 0x02) {value |= 0x40;} ;
wim 0:27f32a087e5a 205 if (data & 0x04) {value |= 0x20;} ;
wim 0:27f32a087e5a 206 if (data & 0x08) {value |= 0x10;} ;
wim 0:27f32a087e5a 207 if (data & 0x10) {value |= 0x08;} ;
wim 0:27f32a087e5a 208 if (data & 0x20) {value |= 0x04;} ;
wim 0:27f32a087e5a 209 if (data & 0x40) {value |= 0x02;} ;
wim 0:27f32a087e5a 210 if (data & 0x80) {value |= 0x01;} ;
wim 0:27f32a087e5a 211 return value;
wim 0:27f32a087e5a 212 }
wim 0:27f32a087e5a 213
wim 0:27f32a087e5a 214
wim 0:27f32a087e5a 215 /** Write command and parameter to PT6964
wim 0:27f32a087e5a 216 * @param int cmd Command byte
wim 0:27f32a087e5a 217 * &Param int data Parameters for command
wim 0:27f32a087e5a 218 * @return none
wim 0:27f32a087e5a 219 */
wim 0:27f32a087e5a 220 void PT6964::_writeCmd(int cmd, int data){
wim 0:27f32a087e5a 221
wim 0:27f32a087e5a 222 _cs=0;
wim 0:27f32a087e5a 223 wait_us(1);
wim 0:27f32a087e5a 224 // _spi.write(_flip( (cmd & 0xF0) | (data & 0x0F)));
wim 0:27f32a087e5a 225 _spi.write(_flip( (cmd & PT6964_CMD_MSK) | (data & ~PT6964_CMD_MSK)));
wim 0:27f32a087e5a 226
wim 0:27f32a087e5a 227 wait_us(1);
wim 0:27f32a087e5a 228 _cs=1;
wim 0:27f32a087e5a 229 }
wim 0:27f32a087e5a 230
wim 0:27f32a087e5a 231
wim 0:27f32a087e5a 232
wim 0:27f32a087e5a 233
wim 0:27f32a087e5a 234 /** Constructor for class for driving Princeton PT6964 controller as used in DVD538A
wim 0:27f32a087e5a 235 *
wim 0:27f32a087e5a 236 * @brief Supports 4 Digits of 7 Segments, 1 Grid of 9 Icons. Also supports a scanned keyboard of 4.
wim 0:27f32a087e5a 237 *
wim 0:27f32a087e5a 238 * @param PinName mosi, miso, sclk, cs SPI bus pins
wim 0:27f32a087e5a 239 */
wim 0:27f32a087e5a 240 PT6964_DVD538A::PT6964_DVD538A(PinName mosi, PinName miso, PinName sclk, PinName cs) : PT6964(mosi, miso, sclk, cs, Grid7_Seg10) {
wim 0:27f32a087e5a 241 _column = 0;
wim 0:27f32a087e5a 242 _columns = DVD538A_NR_DIGITS;
wim 0:27f32a087e5a 243 }
wim 0:27f32a087e5a 244
wim 0:27f32a087e5a 245 #if(0)
wim 0:27f32a087e5a 246 #if DOXYGEN_ONLY
wim 0:27f32a087e5a 247 /** Write a character to the Display
wim 0:27f32a087e5a 248 *
wim 0:27f32a087e5a 249 * @param c The character to write to the display
wim 0:27f32a087e5a 250 */
wim 0:27f32a087e5a 251 int putc(int c);
wim 0:27f32a087e5a 252
wim 0:27f32a087e5a 253 /** Write a formatted string to the Display
wim 0:27f32a087e5a 254 *
wim 0:27f32a087e5a 255 * @param format A printf-style format string, followed by the
wim 0:27f32a087e5a 256 * variables to use in formatting the string.
wim 0:27f32a087e5a 257 */
wim 0:27f32a087e5a 258 int printf(const char* format, ...);
wim 0:27f32a087e5a 259 #endif
wim 0:27f32a087e5a 260 #endif
wim 0:27f32a087e5a 261
wim 0:27f32a087e5a 262 /** Locate cursor to a screen column
wim 0:27f32a087e5a 263 *
wim 0:27f32a087e5a 264 * @param column The horizontal position from the left, indexed from 0
wim 0:27f32a087e5a 265 */
wim 0:27f32a087e5a 266 void PT6964_DVD538A::locate(int column) {
wim 0:27f32a087e5a 267 //sanity check
wim 0:27f32a087e5a 268 if (column < 0) {column = 0;}
wim 0:27f32a087e5a 269 if (column > (_columns - 1)) {column = _columns - 1;}
wim 0:27f32a087e5a 270
wim 0:27f32a087e5a 271 _column = column;
wim 0:27f32a087e5a 272 }
wim 0:27f32a087e5a 273
wim 0:27f32a087e5a 274
wim 0:27f32a087e5a 275 /** Number of screen columns
wim 0:27f32a087e5a 276 *
wim 0:27f32a087e5a 277 * @param none
wim 0:27f32a087e5a 278 * @return columns
wim 0:27f32a087e5a 279 */
wim 0:27f32a087e5a 280 int PT6964_DVD538A::columns() {
wim 0:27f32a087e5a 281 return _columns;
wim 0:27f32a087e5a 282 }
wim 0:27f32a087e5a 283
wim 1:1adf993a3e34 284
wim 0:27f32a087e5a 285 /** Clear the screen and locate to 0
wim 1:1adf993a3e34 286 * @param bool clrAll Clear Icons also (default = false)
wim 1:1adf993a3e34 287 */
wim 1:1adf993a3e34 288 void PT6964_DVD538A::cls(bool clrAll) {
wim 1:1adf993a3e34 289
wim 1:1adf993a3e34 290 if (clrAll) {
wim 1:1adf993a3e34 291 //clear local buffer (including Icons)
wim 2:eaf2f5d1af34 292 for (int idx=0; idx < (DVD538A_NR_GRIDS << 1); idx++) { // * PT6964_BYTES_PER_GRID
wim 1:1adf993a3e34 293 _displaybuffer[idx] = 0x00;
wim 1:1adf993a3e34 294 }
wim 1:1adf993a3e34 295 }
wim 1:1adf993a3e34 296 else {
wim 1:1adf993a3e34 297 //clear local buffer (preserving Icons)
wim 1:1adf993a3e34 298 for (int idx=0; idx < DVD538A_NR_GRIDS; idx++) {
wim 1:1adf993a3e34 299 _displaybuffer[(idx<<1)] = _displaybuffer[(idx<<1)] & MASK_ICON_GRID[idx][0];
wim 1:1adf993a3e34 300 _displaybuffer[(idx<<1) + 1] = _displaybuffer[(idx<<1) + 1] & MASK_ICON_GRID[idx][1];
wim 1:1adf993a3e34 301 }
wim 0:27f32a087e5a 302 }
wim 0:27f32a087e5a 303
wim 2:eaf2f5d1af34 304 writeData(_displaybuffer, (DVD538A_NR_GRIDS * PT6964_BYTES_PER_GRID));
wim 0:27f32a087e5a 305
wim 0:27f32a087e5a 306 _column = 0;
wim 1:1adf993a3e34 307 }
wim 1:1adf993a3e34 308
wim 0:27f32a087e5a 309
wim 0:27f32a087e5a 310 /** Set Icon
wim 0:27f32a087e5a 311 *
wim 1:1adf993a3e34 312 * @param Icon icon Enums Icon has Grid position encoded in 8 MSBs, Icon pattern encoded in 16 LSBs
wim 0:27f32a087e5a 313 * @return none
wim 0:27f32a087e5a 314 */
wim 0:27f32a087e5a 315 void PT6964_DVD538A::setIcon(Icon icon) {
wim 0:27f32a087e5a 316 int addr, icn;
wim 0:27f32a087e5a 317
wim 1:1adf993a3e34 318 icn = icon & 0xFFFF;
wim 1:1adf993a3e34 319 addr = (icon >> 24) & 0xFF;
wim 2:eaf2f5d1af34 320 addr = (addr - 1) << 1; // * PT6964_BYTES_PER_GRID
wim 0:27f32a087e5a 321
wim 0:27f32a087e5a 322 //Save char...and set bits for icon to write
wim 0:27f32a087e5a 323 _displaybuffer[addr] = _displaybuffer[addr] | LO(icn);
wim 0:27f32a087e5a 324 _displaybuffer[addr+1] = _displaybuffer[addr+1] | HI(icn);
wim 2:eaf2f5d1af34 325 writeData(_displaybuffer, (DVD538A_NR_GRIDS * PT6964_BYTES_PER_GRID));
wim 0:27f32a087e5a 326 }
wim 0:27f32a087e5a 327
wim 0:27f32a087e5a 328 /** Clr Icon
wim 0:27f32a087e5a 329 *
wim 1:1adf993a3e34 330 * @param Icon icon Enums Icon has Grid position encoded in 8 MSBs, Icon pattern encoded in 16 LSBs
wim 0:27f32a087e5a 331 * @return none
wim 0:27f32a087e5a 332 */
wim 0:27f32a087e5a 333 void PT6964_DVD538A::clrIcon(Icon icon) {
wim 0:27f32a087e5a 334 int addr, icn;
wim 0:27f32a087e5a 335
wim 1:1adf993a3e34 336 icn = icon & 0xFFFF;
wim 1:1adf993a3e34 337 addr = (icon >> 24) & 0xFF;
wim 2:eaf2f5d1af34 338 addr = (addr - 1) << 1; // * PT6964_BYTES_PER_GRID
wim 1:1adf993a3e34 339
wim 0:27f32a087e5a 340 //Save char...and clr bits for icon to write
wim 0:27f32a087e5a 341 _displaybuffer[addr] = _displaybuffer[addr] & ~LO(icn);
wim 0:27f32a087e5a 342 _displaybuffer[addr+1] = _displaybuffer[addr+1] & ~HI(icn);
wim 2:eaf2f5d1af34 343 writeData(_displaybuffer, (DVD538A_NR_GRIDS * PT6964_BYTES_PER_GRID));
wim 0:27f32a087e5a 344 }
wim 0:27f32a087e5a 345
wim 0:27f32a087e5a 346
wim 0:27f32a087e5a 347 /** Set User Defined Characters (UDC)
wim 0:27f32a087e5a 348 *
wim 0:27f32a087e5a 349 * @param unsigned char udc_idx The Index of the UDC (0..7)
wim 0:27f32a087e5a 350 * @param int udc_data The bitpattern for the UDC (16 bits)
wim 0:27f32a087e5a 351 */
wim 0:27f32a087e5a 352 void PT6964_DVD538A::setUDC(unsigned char udc_idx, int udc_data) {
wim 0:27f32a087e5a 353
wim 0:27f32a087e5a 354 //Sanity check
wim 0:27f32a087e5a 355 if (udc_idx > (DVD538A_NR_UDC-1)) {
wim 0:27f32a087e5a 356 return;
wim 0:27f32a087e5a 357 }
wim 0:27f32a087e5a 358 // Mask out Icon bits?
wim 0:27f32a087e5a 359
wim 1:1adf993a3e34 360 _UDC_7S[udc_idx] = udc_data;
wim 0:27f32a087e5a 361 }
wim 0:27f32a087e5a 362
wim 1:1adf993a3e34 363
wim 0:27f32a087e5a 364 /** Write a single character (Stream implementation)
wim 0:27f32a087e5a 365 */
wim 0:27f32a087e5a 366 int PT6964_DVD538A::_putc(int value) {
wim 1:1adf993a3e34 367 int addr;
wim 1:1adf993a3e34 368 bool validChar = false;
wim 1:1adf993a3e34 369 short pattern = 0x0000;
wim 0:27f32a087e5a 370
wim 0:27f32a087e5a 371 if ((value == '\n') || (value == '\r')) {
wim 0:27f32a087e5a 372 //No character to write
wim 1:1adf993a3e34 373 validChar = false;
wim 0:27f32a087e5a 374
wim 0:27f32a087e5a 375 //Update Cursor
wim 0:27f32a087e5a 376 _column = 0;
wim 1:1adf993a3e34 377 }
wim 1:1adf993a3e34 378 else if (value == '-') {
wim 1:1adf993a3e34 379 //No character to write
wim 1:1adf993a3e34 380 validChar = true;
wim 1:1adf993a3e34 381 pattern = C7_MIN;
wim 0:27f32a087e5a 382 }
wim 0:27f32a087e5a 383 else if ((value >= 0) && (value < DVD538A_NR_UDC)) {
wim 0:27f32a087e5a 384 //Character to write
wim 1:1adf993a3e34 385 validChar = true;
wim 1:1adf993a3e34 386 pattern = _UDC_7S[value];
wim 0:27f32a087e5a 387 }
wim 0:27f32a087e5a 388 else if ((value >= (int)'0') && (value <= (int) '9')) {
wim 0:27f32a087e5a 389 //Character to write
wim 1:1adf993a3e34 390 validChar = true;
wim 1:1adf993a3e34 391 pattern = FONT_7S[value - (int) '0'];
wim 1:1adf993a3e34 392 }
wim 1:1adf993a3e34 393 else if ((value >= (int) 'A') && (value <= (int) 'F')) {
wim 1:1adf993a3e34 394 //Character to write
wim 1:1adf993a3e34 395 validChar = true;
wim 1:1adf993a3e34 396 pattern = FONT_7S[10 + value - (int) 'A'];
wim 1:1adf993a3e34 397 }
wim 1:1adf993a3e34 398 else if ((value >= (int) 'a') && (value <= (int) 'f')) {
wim 1:1adf993a3e34 399 //Character to write
wim 1:1adf993a3e34 400 validChar = true;
wim 1:1adf993a3e34 401 pattern = FONT_7S[10 + value - (int) 'a'];
wim 1:1adf993a3e34 402 } //else
wim 1:1adf993a3e34 403
wim 1:1adf993a3e34 404 if (validChar) {
wim 1:1adf993a3e34 405 //Character to write
wim 1:1adf993a3e34 406
wim 1:1adf993a3e34 407 //Translate between _column and displaybuffer entries
wim 1:1adf993a3e34 408 //_column == 0 => Grid5 => addr = 8
wim 1:1adf993a3e34 409 //_column == 1 => Grid4 => addr = 6
wim 1:1adf993a3e34 410 //_column == 2 => Grid3 => addr = 4
wim 1:1adf993a3e34 411 //_column == 3 => Grid4 => addr = 2
wim 2:eaf2f5d1af34 412 addr = (4 - _column) << 1; // * PT6964_BYTES_PER_GRID
wim 1:1adf993a3e34 413
wim 0:27f32a087e5a 414 //Save icons...and set bits for character to write
wim 1:1adf993a3e34 415 _displaybuffer[addr] = (_displaybuffer[addr] & MASK_ICON_GRID[4 - _column][0]) | LO(pattern);
wim 1:1adf993a3e34 416 _displaybuffer[addr+1] = (_displaybuffer[addr+1] & MASK_ICON_GRID[4 - _column][1]) | HI(pattern);
wim 1:1adf993a3e34 417
wim 2:eaf2f5d1af34 418 writeData(_displaybuffer, (DVD538A_NR_GRIDS * PT6964_BYTES_PER_GRID));
wim 1:1adf993a3e34 419
wim 0:27f32a087e5a 420 //Update Cursor
wim 0:27f32a087e5a 421 _column++;
wim 0:27f32a087e5a 422 if (_column > (DVD538A_NR_DIGITS - 1)) {
wim 0:27f32a087e5a 423 _column = 0;
wim 0:27f32a087e5a 424 }
wim 0:27f32a087e5a 425
wim 1:1adf993a3e34 426 } // if validChar
wim 0:27f32a087e5a 427
wim 0:27f32a087e5a 428 return value;
wim 0:27f32a087e5a 429 }
wim 0:27f32a087e5a 430
wim 0:27f32a087e5a 431 // get a single character (Stream implementation)
wim 0:27f32a087e5a 432 int PT6964_DVD538A::_getc() {
wim 0:27f32a087e5a 433 return -1;
wim 0:27f32a087e5a 434 }