jack zen / TM1638

TEST

Dependents:   ADXL345Test ADXL345Test1

Fork of TM1638 by Wim Huiskamp

TM1638.cpp@1:1f2453ed85d7, 2016-01-09 (annotated)

Committer:
wim
Date:
Sat Jan 09 14:30:43 2016 +0000
Revision:
1:1f2453ed85d7
Parent:
0:201dfacbe0e5
Child:
2:532ce15ea9ec
TM1638 LED controller, Initial version.; Supports LED&KEY module.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
wim 0:201dfacbe0e5 1 /* mbed TM1638 Library, for TM1638 LED controller
wim 0:201dfacbe0e5 2 * Copyright (c) 2015, v01: WH, Initial version
wim 0:201dfacbe0e5 3 *
wim 0:201dfacbe0e5 4 * Permission is hereby granted, free of charge, to any person obtaining a copy
wim 0:201dfacbe0e5 5 * of this software and associated documentation files (the "Software"), to deal
wim 0:201dfacbe0e5 6 * in the Software without restriction, including without limitation the rights
wim 0:201dfacbe0e5 7 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
wim 0:201dfacbe0e5 8 * copies of the Software, and to permit persons to whom the Software is
wim 0:201dfacbe0e5 9 * furnished to do so, subject to the following conditions:
wim 0:201dfacbe0e5 10 *
wim 0:201dfacbe0e5 11 * The above copyright notice and this permission notice shall be included in
wim 0:201dfacbe0e5 12 * all copies or substantial portions of the Software.
wim 0:201dfacbe0e5 13 *
wim 0:201dfacbe0e5 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
wim 0:201dfacbe0e5 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
wim 0:201dfacbe0e5 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
wim 0:201dfacbe0e5 17 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
wim 0:201dfacbe0e5 18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
wim 0:201dfacbe0e5 19 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
wim 0:201dfacbe0e5 20 * THE SOFTWARE.
wim 0:201dfacbe0e5 21 */
wim 0:201dfacbe0e5 22 #include "mbed.h"
wim 0:201dfacbe0e5 23 #include "TM1638.h"
wim 0:201dfacbe0e5 24
wim 0:201dfacbe0e5 25 /** Constructor for class for driving TM1638 LED controller with SPI bus interface device.
wim 0:201dfacbe0e5 26 * @brief Supports 8 digits @ 10 segments.
wim 0:201dfacbe0e5 27 * Also supports a scanned keyboard of upto 24 keys.
wim 0:201dfacbe0e5 28 *
wim 0:201dfacbe0e5 29 * @param PinName mosi, miso, sclk, cs SPI bus pins
wim 0:201dfacbe0e5 30 */
wim 0:201dfacbe0e5 31 TM1638::TM1638(PinName mosi, PinName miso, PinName sclk, PinName cs) : _spi(mosi,miso,sclk), _cs(cs) {
wim 0:201dfacbe0e5 32
wim 0:201dfacbe0e5 33 _init();
wim 0:201dfacbe0e5 34 }
wim 0:201dfacbe0e5 35
wim 0:201dfacbe0e5 36 /** Init the SPI interface and the controller
wim 0:201dfacbe0e5 37 * @param none
wim 0:201dfacbe0e5 38 * @return none
wim 0:201dfacbe0e5 39 */
wim 0:201dfacbe0e5 40 void TM1638::_init(){
wim 0:201dfacbe0e5 41
wim 0:201dfacbe0e5 42 //init SPI
wim 0:201dfacbe0e5 43 _cs=1;
wim 0:201dfacbe0e5 44 _spi.format(8,3); //TM1638 uses mode 3 (Clock High on Idle, Data latched on second (=rising) edge)
wim 0:201dfacbe0e5 45 _spi.frequency(500000);
wim 0:201dfacbe0e5 46
wim 0:201dfacbe0e5 47 //init controller
wim 0:201dfacbe0e5 48 _display = TM1638_DSP_ON;
wim 0:201dfacbe0e5 49 _bright = TM1638_BRT_DEF;
wim 0:201dfacbe0e5 50 _writeCmd(TM1638_DSP_CTRL_CMD, _display | _bright ); // Display control cmd, display on/off, brightness
wim 0:201dfacbe0e5 51
wim 0:201dfacbe0e5 52 _writeCmd(TM1638_DATA_SET_CMD, TM1638_DATA_WR | TM1638_ADDR_INC | TM1638_MODE_NORM); // Data set cmd, normal mode, auto incr, write data
wim 0:201dfacbe0e5 53 }
wim 0:201dfacbe0e5 54
wim 0:201dfacbe0e5 55
wim 0:201dfacbe0e5 56 /** Clear the screen and locate to 0
wim 0:201dfacbe0e5 57 */
wim 0:201dfacbe0e5 58 void TM1638::cls() {
wim 0:201dfacbe0e5 59
wim 0:201dfacbe0e5 60 _cs=0;
wim 0:201dfacbe0e5 61 wait_us(1);
wim 0:201dfacbe0e5 62 _spi.write(_flip(TM1638_ADDR_SET_CMD | 0x00)); // Address set cmd, 0
wim 0:201dfacbe0e5 63
wim 0:201dfacbe0e5 64 for (int cnt=0; cnt<TM1638_DISPLAY_MEM; cnt++) {
wim 0:201dfacbe0e5 65 _spi.write(0x00); // data
wim 0:201dfacbe0e5 66 }
wim 0:201dfacbe0e5 67
wim 0:201dfacbe0e5 68 wait_us(1);
wim 0:201dfacbe0e5 69 _cs=1;
wim 0:201dfacbe0e5 70 }
wim 0:201dfacbe0e5 71
wim 0:201dfacbe0e5 72 /** Set Brightness
wim 0:201dfacbe0e5 73 *
wim 0:201dfacbe0e5 74 * @param char brightness (3 significant bits, valid range 0..7 (1/16 .. 14/14 dutycycle)
wim 0:201dfacbe0e5 75 * @return none
wim 0:201dfacbe0e5 76 */
wim 0:201dfacbe0e5 77 void TM1638::setBrightness(char brightness){
wim 0:201dfacbe0e5 78
wim 0:201dfacbe0e5 79 _bright = brightness & TM1638_BRT_MSK; // mask invalid bits
wim 0:201dfacbe0e5 80
wim 0:201dfacbe0e5 81 _writeCmd(TM1638_DSP_CTRL_CMD, _display | _bright ); // Display control cmd, display on/off, brightness
wim 0:201dfacbe0e5 82 }
wim 0:201dfacbe0e5 83
wim 0:201dfacbe0e5 84 /** Set the Display mode On/off
wim 0:201dfacbe0e5 85 *
wim 0:201dfacbe0e5 86 * @param bool display mode
wim 0:201dfacbe0e5 87 */
wim 0:201dfacbe0e5 88 void TM1638::setDisplay(bool on) {
wim 0:201dfacbe0e5 89
wim 0:201dfacbe0e5 90 if (on) {
wim 0:201dfacbe0e5 91 _display = TM1638_DSP_ON;
wim 0:201dfacbe0e5 92 }
wim 0:201dfacbe0e5 93 else {
wim 0:201dfacbe0e5 94 _display = TM1638_DSP_OFF;
wim 0:201dfacbe0e5 95 }
wim 0:201dfacbe0e5 96
wim 0:201dfacbe0e5 97 _writeCmd(TM1638_DSP_CTRL_CMD, _display | _bright ); // Display control cmd, display on/off, brightness
wim 0:201dfacbe0e5 98 }
wim 0:201dfacbe0e5 99
wim 0:201dfacbe0e5 100 /** Write databyte to TM1638
wim 0:201dfacbe0e5 101 * @param int address display memory location to write byte
wim 0:201dfacbe0e5 102 * @param char data byte written at given address
wim 0:201dfacbe0e5 103 * @return none
wim 0:201dfacbe0e5 104 */
wim 0:201dfacbe0e5 105 void TM1638::writeData(int address, char data) {
wim 0:201dfacbe0e5 106 _cs=0;
wim 0:201dfacbe0e5 107 wait_us(1);
wim 0:201dfacbe0e5 108 _spi.write(_flip(TM1638_ADDR_SET_CMD | (address & TM1638_ADDR_MSK))); // Set Address cmd
wim 0:201dfacbe0e5 109
wim 0:201dfacbe0e5 110 _spi.write(_flip(data)); // data
wim 0:201dfacbe0e5 111
wim 0:201dfacbe0e5 112 wait_us(1);
wim 0:201dfacbe0e5 113 _cs=1;
wim 0:201dfacbe0e5 114 }
wim 0:201dfacbe0e5 115
wim 0:201dfacbe0e5 116 /** Write Display datablock to TM1638
wim 0:201dfacbe0e5 117 * @param DisplayData_t data Array of TM1638_DISPLAY_MEM (=16) bytes for displaydata (starting at address 0)
wim 0:201dfacbe0e5 118 * @param length number bytes to write (valide range 0..TM1638_DISPLAY_MEM (=16), starting at address 0)
wim 0:201dfacbe0e5 119 * @return none
wim 0:201dfacbe0e5 120 */
wim 0:201dfacbe0e5 121 void TM1638::writeData(DisplayData_t data, int length) {
wim 0:201dfacbe0e5 122 _cs=0;
wim 0:201dfacbe0e5 123 wait_us(1);
wim 0:201dfacbe0e5 124 _spi.write(_flip(TM1638_ADDR_SET_CMD | 0x00)); // Set Address at 0
wim 0:201dfacbe0e5 125
wim 0:201dfacbe0e5 126 // sanity check
wim 0:201dfacbe0e5 127 if (length < 0) {length = 0;}
wim 0:201dfacbe0e5 128 if (length > TM1638_DISPLAY_MEM) {length = TM1638_DISPLAY_MEM;}
wim 0:201dfacbe0e5 129
wim 0:201dfacbe0e5 130 // for (int idx=0; idx<TM1638_DISPLAY_MEM; idx++) {
wim 0:201dfacbe0e5 131 for (int idx=0; idx<length; idx++) {
wim 0:201dfacbe0e5 132 _spi.write(_flip(data[idx])); // data
wim 0:201dfacbe0e5 133 }
wim 0:201dfacbe0e5 134
wim 0:201dfacbe0e5 135 wait_us(1);
wim 0:201dfacbe0e5 136 _cs=1;
wim 0:201dfacbe0e5 137 }
wim 0:201dfacbe0e5 138
wim 0:201dfacbe0e5 139
wim 0:201dfacbe0e5 140 /** Read keydata block from TM1638
wim 0:201dfacbe0e5 141 * @param *keydata Ptr to Array of TM1638_KEY_MEM (=4) bytes for keydata
wim 0:201dfacbe0e5 142 * @return bool keypress True when at least one key was pressed
wim 0:201dfacbe0e5 143 *
wim 0:201dfacbe0e5 144 * Note: Due to the hardware configuration the TM1638 key matrix scanner will detect multiple keys pressed at same time,
wim 0:201dfacbe0e5 145 * but this may also result in some spurious keys being set in keypress data array.
wim 0:201dfacbe0e5 146 * It may be best to ignore all keys in those situations. That option is implemented in this method depending on #define setting.
wim 0:201dfacbe0e5 147 */
wim 0:201dfacbe0e5 148 bool TM1638::getKeys(KeyData_t *keydata) {
wim 0:201dfacbe0e5 149 int keypress = 0;
wim 0:201dfacbe0e5 150 char data;
wim 0:201dfacbe0e5 151
wim 0:201dfacbe0e5 152 // Read keys
wim 0:201dfacbe0e5 153 _cs=0;
wim 0:201dfacbe0e5 154 wait_us(1);
wim 0:201dfacbe0e5 155
wim 0:201dfacbe0e5 156 // Enable Key Read mode
wim 0:201dfacbe0e5 157 _spi.write(_flip(TM1638_DATA_SET_CMD | TM1638_KEY_RD | TM1638_ADDR_INC | TM1638_MODE_NORM)); // Data set cmd, normal mode, auto incr, read data
wim 0:201dfacbe0e5 158
wim 0:201dfacbe0e5 159 for (int idx=0; idx < TM1638_KEY_MEM; idx++) {
wim 0:201dfacbe0e5 160 data = _flip(_spi.write(0xFF)); // read keys and correct bitorder
wim 0:201dfacbe0e5 161
wim 0:201dfacbe0e5 162 if (data != 0) { // Check for any pressed key
wim 0:201dfacbe0e5 163 for (int bit=0; bit < TM1638_KEY_BITS; bit++) {
wim 0:201dfacbe0e5 164 if (data & (1 << bit)) {keypress++;} // Test all significant bits
wim 0:201dfacbe0e5 165 }
wim 0:201dfacbe0e5 166 }
wim 0:201dfacbe0e5 167
wim 0:201dfacbe0e5 168 (*keydata)[idx] = data; // Store keydata after correcting bitorder
wim 0:201dfacbe0e5 169 }
wim 0:201dfacbe0e5 170
wim 0:201dfacbe0e5 171 wait_us(1);
wim 0:201dfacbe0e5 172 _cs=1;
wim 0:201dfacbe0e5 173
wim 0:201dfacbe0e5 174 // Restore Data Write mode
wim 0:201dfacbe0e5 175 _writeCmd(TM1638_DATA_SET_CMD, TM1638_DATA_WR | TM1638_ADDR_INC | TM1638_MODE_NORM); // Data set cmd, normal mode, auto incr, write data
wim 0:201dfacbe0e5 176
wim 0:201dfacbe0e5 177 #if(1)
wim 0:201dfacbe0e5 178 // Dismiss multiple keypresses at same time
wim 0:201dfacbe0e5 179 return (keypress == 1);
wim 0:201dfacbe0e5 180 #else
wim 0:201dfacbe0e5 181 // Allow multiple keypress and accept possible spurious keys
wim 0:201dfacbe0e5 182 return (keypress > 0);
wim 0:201dfacbe0e5 183 #endif
wim 0:201dfacbe0e5 184 }
wim 0:201dfacbe0e5 185
wim 0:201dfacbe0e5 186
wim 0:201dfacbe0e5 187 /** Helper to reverse all command or databits. The TM1638 expects LSB first, whereas SPI is MSB first
wim 0:201dfacbe0e5 188 * @param char data
wim 0:201dfacbe0e5 189 * @return bitreversed data
wim 0:201dfacbe0e5 190 */
wim 0:201dfacbe0e5 191 char TM1638::_flip(char data) {
wim 0:201dfacbe0e5 192 char value=0;
wim 0:201dfacbe0e5 193
wim 0:201dfacbe0e5 194 if (data & 0x01) {value |= 0x80;} ;
wim 0:201dfacbe0e5 195 if (data & 0x02) {value |= 0x40;} ;
wim 0:201dfacbe0e5 196 if (data & 0x04) {value |= 0x20;} ;
wim 0:201dfacbe0e5 197 if (data & 0x08) {value |= 0x10;} ;
wim 0:201dfacbe0e5 198 if (data & 0x10) {value |= 0x08;} ;
wim 0:201dfacbe0e5 199 if (data & 0x20) {value |= 0x04;} ;
wim 0:201dfacbe0e5 200 if (data & 0x40) {value |= 0x02;} ;
wim 0:201dfacbe0e5 201 if (data & 0x80) {value |= 0x01;} ;
wim 0:201dfacbe0e5 202 return value;
wim 0:201dfacbe0e5 203 }
wim 0:201dfacbe0e5 204
wim 0:201dfacbe0e5 205
wim 0:201dfacbe0e5 206 /** Write command and parameter to TM1638
wim 0:201dfacbe0e5 207 * @param int cmd Command byte
wim 0:201dfacbe0e5 208 * &Param int data Parameters for command
wim 0:201dfacbe0e5 209 * @return none
wim 0:201dfacbe0e5 210 */
wim 0:201dfacbe0e5 211 void TM1638::_writeCmd(int cmd, int data){
wim 0:201dfacbe0e5 212
wim 0:201dfacbe0e5 213 _cs=0;
wim 0:201dfacbe0e5 214 wait_us(1);
wim 0:201dfacbe0e5 215 // _spi.write(_flip( (cmd & 0xF0) | (data & 0x0F)));
wim 0:201dfacbe0e5 216 _spi.write(_flip( (cmd & TM1638_CMD_MSK) | (data & ~TM1638_CMD_MSK)));
wim 0:201dfacbe0e5 217
wim 0:201dfacbe0e5 218 wait_us(1);
wim 0:201dfacbe0e5 219 _cs=1;
wim 0:201dfacbe0e5 220 }
wim 0:201dfacbe0e5 221
wim 0:201dfacbe0e5 222
wim 0:201dfacbe0e5 223 #if (LEDKEY8_TEST == 1)
wim 0:201dfacbe0e5 224 // Derived class for TM1638 used in LED&KEY display unit
wim 0:201dfacbe0e5 225 //
wim 0:201dfacbe0e5 226
wim 0:201dfacbe0e5 227 /** Constructor for class for driving TM1638 LED controller as used in LEDKEY8
wim 0:201dfacbe0e5 228 *
wim 0:201dfacbe0e5 229 * @brief Supports 8 Digits of 7 Segments + DP + LED Icons. Also supports a scanned keyboard of 8.
wim 0:201dfacbe0e5 230 *
wim 0:201dfacbe0e5 231 * @param PinName mosi, miso, sclk, cs SPI bus pins
wim 0:201dfacbe0e5 232 */
wim 0:201dfacbe0e5 233 TM1638_LEDKEY8::TM1638_LEDKEY8(PinName mosi, PinName miso, PinName sclk, PinName cs) : TM1638(mosi, miso, sclk, cs) {
wim 0:201dfacbe0e5 234 _column = 0;
wim 0:201dfacbe0e5 235 _columns = LEDKEY8_NR_DIGITS;
wim 0:201dfacbe0e5 236 }
wim 0:201dfacbe0e5 237
wim 0:201dfacbe0e5 238 #if(0)
wim 0:201dfacbe0e5 239 #if DOXYGEN_ONLY
wim 0:201dfacbe0e5 240 /** Write a character to the Display
wim 0:201dfacbe0e5 241 *
wim 0:201dfacbe0e5 242 * @param c The character to write to the display
wim 0:201dfacbe0e5 243 */
wim 0:201dfacbe0e5 244 int putc(int c);
wim 0:201dfacbe0e5 245
wim 0:201dfacbe0e5 246 /** Write a formatted string to the Display
wim 0:201dfacbe0e5 247 *
wim 0:201dfacbe0e5 248 * @param format A printf-style format string, followed by the
wim 0:201dfacbe0e5 249 * variables to use in formatting the string.
wim 0:201dfacbe0e5 250 */
wim 0:201dfacbe0e5 251 int printf(const char* format, ...);
wim 0:201dfacbe0e5 252 #endif
wim 0:201dfacbe0e5 253 #endif
wim 0:201dfacbe0e5 254
wim 0:201dfacbe0e5 255 /** Locate cursor to a screen column
wim 0:201dfacbe0e5 256 *
wim 0:201dfacbe0e5 257 * @param column The horizontal position from the left, indexed from 0
wim 0:201dfacbe0e5 258 */
wim 0:201dfacbe0e5 259 void TM1638_LEDKEY8::locate(int column) {
wim 0:201dfacbe0e5 260 //sanity check
wim 0:201dfacbe0e5 261 if (column < 0) {column = 0;}
wim 0:201dfacbe0e5 262 if (column > (_columns - 1)) {column = _columns - 1;}
wim 0:201dfacbe0e5 263
wim 0:201dfacbe0e5 264 _column = column;
wim 0:201dfacbe0e5 265 }
wim 0:201dfacbe0e5 266
wim 0:201dfacbe0e5 267
wim 0:201dfacbe0e5 268 /** Number of screen columns
wim 0:201dfacbe0e5 269 *
wim 0:201dfacbe0e5 270 * @param none
wim 0:201dfacbe0e5 271 * @return columns
wim 0:201dfacbe0e5 272 */
wim 0:201dfacbe0e5 273 int TM1638_LEDKEY8::columns() {
wim 0:201dfacbe0e5 274 return _columns;
wim 0:201dfacbe0e5 275 }
wim 0:201dfacbe0e5 276
wim 0:201dfacbe0e5 277
wim 0:201dfacbe0e5 278 /** Clear the screen and locate to 0
wim 0:201dfacbe0e5 279 * @param bool clrAll Clear Icons also (default = false)
wim 0:201dfacbe0e5 280 */
wim 0:201dfacbe0e5 281 void TM1638_LEDKEY8::cls(bool clrAll) {
wim 0:201dfacbe0e5 282
wim 0:201dfacbe0e5 283 if (clrAll) {
wim 0:201dfacbe0e5 284 //clear local buffer (including Icons)
wim 0:201dfacbe0e5 285 for (int idx=0; idx < (LEDKEY8_NR_GRIDS << 1); idx++) {
wim 0:201dfacbe0e5 286 _displaybuffer[idx] = 0x00;
wim 0:201dfacbe0e5 287 }
wim 0:201dfacbe0e5 288 }
wim 0:201dfacbe0e5 289 else {
wim 0:201dfacbe0e5 290 //clear local buffer (preserving Icons)
wim 0:201dfacbe0e5 291 for (int idx=0; idx < LEDKEY8_NR_GRIDS; idx++) {
wim 0:201dfacbe0e5 292 _displaybuffer[(idx<<1)] = _displaybuffer[(idx<<1)] & MASK_ICON_GRID[idx][0];
wim 0:201dfacbe0e5 293 _displaybuffer[(idx<<1) + 1] = _displaybuffer[(idx<<1) + 1] & MASK_ICON_GRID[idx][1];
wim 0:201dfacbe0e5 294 }
wim 0:201dfacbe0e5 295 }
wim 0:201dfacbe0e5 296
wim 0:201dfacbe0e5 297 writeData(_displaybuffer, (LEDKEY8_NR_GRIDS*2));
wim 0:201dfacbe0e5 298
wim 0:201dfacbe0e5 299 _column = 0;
wim 0:201dfacbe0e5 300 }
wim 0:201dfacbe0e5 301
wim 0:201dfacbe0e5 302 /** Set Icon
wim 0:201dfacbe0e5 303 *
wim 1:1f2453ed85d7 304 * @param Icon icon Enums Icon has Grid position encoded in 8 MSBs, Icon pattern encoded in 16 LSBs
wim 0:201dfacbe0e5 305 * @return none
wim 0:201dfacbe0e5 306 */
wim 0:201dfacbe0e5 307 void TM1638_LEDKEY8::setIcon(Icon icon) {
wim 0:201dfacbe0e5 308 int addr, icn;
wim 0:201dfacbe0e5 309
wim 1:1f2453ed85d7 310 icn = icon & 0xFFFF;
wim 0:201dfacbe0e5 311 addr = (icon >> 24) & 0xFF;
wim 0:201dfacbe0e5 312 addr = (addr - 1) << 1;
wim 0:201dfacbe0e5 313
wim 0:201dfacbe0e5 314 //Save char...and set bits for icon to write
wim 0:201dfacbe0e5 315 _displaybuffer[addr] = _displaybuffer[addr] | LO(icn);
wim 0:201dfacbe0e5 316 _displaybuffer[addr+1] = _displaybuffer[addr+1] | HI(icn);
wim 0:201dfacbe0e5 317 writeData(_displaybuffer, (LEDKEY8_NR_GRIDS*2));
wim 0:201dfacbe0e5 318 }
wim 0:201dfacbe0e5 319
wim 0:201dfacbe0e5 320 /** Clr Icon
wim 0:201dfacbe0e5 321 *
wim 1:1f2453ed85d7 322 * @param Icon icon Enums Icon has Grid position encoded in 8 MSBs, Icon pattern encoded in 16 LSBs
wim 0:201dfacbe0e5 323 * @return none
wim 0:201dfacbe0e5 324 */
wim 0:201dfacbe0e5 325 void TM1638_LEDKEY8::clrIcon(Icon icon) {
wim 0:201dfacbe0e5 326 int addr, icn;
wim 0:201dfacbe0e5 327
wim 1:1f2453ed85d7 328 icn = icon & 0xFFFF;
wim 0:201dfacbe0e5 329 addr = (icon >> 24) & 0xFF;
wim 0:201dfacbe0e5 330 addr = (addr - 1) << 1;
wim 0:201dfacbe0e5 331
wim 0:201dfacbe0e5 332 //Save char...and clr bits for icon to write
wim 0:201dfacbe0e5 333 _displaybuffer[addr] = _displaybuffer[addr] & ~LO(icn);
wim 0:201dfacbe0e5 334 _displaybuffer[addr+1] = _displaybuffer[addr+1] & ~HI(icn);
wim 0:201dfacbe0e5 335 writeData(_displaybuffer, (LEDKEY8_NR_GRIDS*2));
wim 0:201dfacbe0e5 336 }
wim 0:201dfacbe0e5 337
wim 0:201dfacbe0e5 338
wim 0:201dfacbe0e5 339 /** Set User Defined Characters (UDC)
wim 0:201dfacbe0e5 340 *
wim 0:201dfacbe0e5 341 * @param unsigned char udc_idx The Index of the UDC (0..7)
wim 0:201dfacbe0e5 342 * @param int udc_data The bitpattern for the UDC (8 bits)
wim 0:201dfacbe0e5 343 */
wim 0:201dfacbe0e5 344 void TM1638_LEDKEY8::setUDC(unsigned char udc_idx, int udc_data) {
wim 0:201dfacbe0e5 345
wim 0:201dfacbe0e5 346 //Sanity check
wim 0:201dfacbe0e5 347 if (udc_idx > (LEDKEY8_NR_UDC-1)) {
wim 0:201dfacbe0e5 348 return;
wim 0:201dfacbe0e5 349 }
wim 0:201dfacbe0e5 350 // Mask out Icon bits?
wim 0:201dfacbe0e5 351
wim 0:201dfacbe0e5 352 _UDC_7S[udc_idx] = LO(udc_data);
wim 0:201dfacbe0e5 353 }
wim 0:201dfacbe0e5 354
wim 0:201dfacbe0e5 355
wim 0:201dfacbe0e5 356 /** Write a single character (Stream implementation)
wim 0:201dfacbe0e5 357 */
wim 0:201dfacbe0e5 358 int TM1638_LEDKEY8::_putc(int value) {
wim 0:201dfacbe0e5 359 int addr;
wim 0:201dfacbe0e5 360 bool validChar = false;
wim 0:201dfacbe0e5 361 char pattern = 0x00;
wim 0:201dfacbe0e5 362
wim 0:201dfacbe0e5 363 if ((value == '\n') || (value == '\r')) {
wim 0:201dfacbe0e5 364 //No character to write
wim 0:201dfacbe0e5 365 validChar = false;
wim 0:201dfacbe0e5 366
wim 0:201dfacbe0e5 367 //Update Cursor
wim 0:201dfacbe0e5 368 _column = 0;
wim 0:201dfacbe0e5 369 }
wim 1:1f2453ed85d7 370 else if ((value == '.') || (value == ',')) {
wim 1:1f2453ed85d7 371 //No character to write
wim 1:1f2453ed85d7 372 validChar = false;
wim 1:1f2453ed85d7 373 pattern = S7_DP; // placeholder for all DPs
wim 1:1f2453ed85d7 374
wim 1:1f2453ed85d7 375 // Check to see that DP can be shown for current column
wim 1:1f2453ed85d7 376 if (_column > 0) {
wim 1:1f2453ed85d7 377 //Translate between _column and displaybuffer entries
wim 1:1f2453ed85d7 378 //Add DP to bitpattern of digit left of current column.
wim 1:1f2453ed85d7 379 addr = (_column - 1) << 1;
wim 1:1f2453ed85d7 380
wim 1:1f2453ed85d7 381 //Save icons...and set bits for decimal point to write
wim 1:1f2453ed85d7 382 _displaybuffer[addr] = _displaybuffer[addr] | pattern;
wim 1:1f2453ed85d7 383 // _displaybuffer[addr+1] = _displaybuffer[addr+1] | pattern;
wim 1:1f2453ed85d7 384
wim 1:1f2453ed85d7 385 writeData(_displaybuffer, (LEDKEY8_NR_GRIDS*2));
wim 1:1f2453ed85d7 386
wim 1:1f2453ed85d7 387 //No Cursor Update
wim 1:1f2453ed85d7 388 }
wim 1:1f2453ed85d7 389 }
wim 1:1f2453ed85d7 390 else if (value == '-') {
wim 1:1f2453ed85d7 391 //No character to write
wim 1:1f2453ed85d7 392 validChar = true;
wim 1:1f2453ed85d7 393 pattern = C7_MIN;
wim 1:1f2453ed85d7 394 }
wim 0:201dfacbe0e5 395 else if ((value >= 0) && (value < LEDKEY8_NR_UDC)) {
wim 0:201dfacbe0e5 396 //Character to write
wim 0:201dfacbe0e5 397 validChar = true;
wim 0:201dfacbe0e5 398 pattern = _UDC_7S[value];
wim 0:201dfacbe0e5 399 }
wim 0:201dfacbe0e5 400 else if ((value >= (int)'0') && (value <= (int) '9')) {
wim 0:201dfacbe0e5 401 //Character to write
wim 0:201dfacbe0e5 402 validChar = true;
wim 0:201dfacbe0e5 403 pattern = FONT_7S[value - (int) '0'];
wim 0:201dfacbe0e5 404 }
wim 0:201dfacbe0e5 405 else if ((value >= (int) 'A') && (value <= (int) 'F')) {
wim 0:201dfacbe0e5 406 //Character to write
wim 0:201dfacbe0e5 407 validChar = true;
wim 0:201dfacbe0e5 408 pattern = FONT_7S[10 + value - (int) 'A'];
wim 0:201dfacbe0e5 409 }
wim 0:201dfacbe0e5 410 else if ((value >= (int) 'a') && (value <= (int) 'f')) {
wim 0:201dfacbe0e5 411 //Character to write
wim 0:201dfacbe0e5 412 validChar = true;
wim 0:201dfacbe0e5 413 pattern = FONT_7S[10 + value - (int) 'a'];
wim 0:201dfacbe0e5 414 } //else
wim 0:201dfacbe0e5 415
wim 0:201dfacbe0e5 416 if (validChar) {
wim 0:201dfacbe0e5 417 //Character to write
wim 0:201dfacbe0e5 418
wim 0:201dfacbe0e5 419 //Translate between _column and displaybuffer entries
wim 0:201dfacbe0e5 420 addr = _column << 1;
wim 0:201dfacbe0e5 421
wim 0:201dfacbe0e5 422 //Save icons...and set bits for character to write
wim 0:201dfacbe0e5 423 _displaybuffer[addr] = (_displaybuffer[addr] & MASK_ICON_GRID[_column][0]) | pattern;
wim 0:201dfacbe0e5 424 // _displaybuffer[addr+1] = (_displaybuffer[addr+1] & MASK_ICON_GRID[_column][0]) | pattern;
wim 0:201dfacbe0e5 425
wim 0:201dfacbe0e5 426 writeData(_displaybuffer, (LEDKEY8_NR_GRIDS*2));
wim 0:201dfacbe0e5 427
wim 0:201dfacbe0e5 428 //Update Cursor
wim 0:201dfacbe0e5 429 _column++;
wim 0:201dfacbe0e5 430 if (_column > (LEDKEY8_NR_DIGITS - 1)) {
wim 0:201dfacbe0e5 431 _column = 0;
wim 0:201dfacbe0e5 432 }
wim 0:201dfacbe0e5 433
wim 0:201dfacbe0e5 434 } // if validChar
wim 0:201dfacbe0e5 435
wim 0:201dfacbe0e5 436 return value;
wim 0:201dfacbe0e5 437 }
wim 0:201dfacbe0e5 438
wim 0:201dfacbe0e5 439
wim 0:201dfacbe0e5 440 // get a single character (Stream implementation)
wim 0:201dfacbe0e5 441 int TM1638_LEDKEY8::_getc() {
wim 0:201dfacbe0e5 442 return -1;
wim 0:201dfacbe0e5 443 }
wim 0:201dfacbe0e5 444
wim 0:201dfacbe0e5 445 #endif