Library for TM1640 LED controller Initial version
See here for more information.
TM1640.cpp@0:7e120ffa56d3, 2016-01-28 (annotated)
- Committer:
- wim
- Date:
- Thu Jan 28 19:25:49 2016 +0000
- Revision:
- 0:7e120ffa56d3
Library for TM1640 LED controller; Initial version
Who changed what in which revision?
User | Revision | Line number | New contents of line |
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wim | 0:7e120ffa56d3 | 1 | /* mbed TM1640 Library, for TM1640 LED controller |
wim | 0:7e120ffa56d3 | 2 | * Copyright (c) 2016, v01: WH, Initial version |
wim | 0:7e120ffa56d3 | 3 | * |
wim | 0:7e120ffa56d3 | 4 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
wim | 0:7e120ffa56d3 | 5 | * of this software and associated documentation files (the "Software"), to deal |
wim | 0:7e120ffa56d3 | 6 | * in the Software without restriction, inclumosig without limitation the rights |
wim | 0:7e120ffa56d3 | 7 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
wim | 0:7e120ffa56d3 | 8 | * copies of the Software, and to permit persons to whom the Software is |
wim | 0:7e120ffa56d3 | 9 | * furnished to do so, subject to the following conditions: |
wim | 0:7e120ffa56d3 | 10 | * |
wim | 0:7e120ffa56d3 | 11 | * The above copyright notice and this permission notice shall be included in |
wim | 0:7e120ffa56d3 | 12 | * all copies or substantial portions of the Software. |
wim | 0:7e120ffa56d3 | 13 | * |
wim | 0:7e120ffa56d3 | 14 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
wim | 0:7e120ffa56d3 | 15 | * IMPLIED, INCLUmosiG BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
wim | 0:7e120ffa56d3 | 16 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
wim | 0:7e120ffa56d3 | 17 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
wim | 0:7e120ffa56d3 | 18 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
wim | 0:7e120ffa56d3 | 19 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
wim | 0:7e120ffa56d3 | 20 | * THE SOFTWARE. |
wim | 0:7e120ffa56d3 | 21 | */ |
wim | 0:7e120ffa56d3 | 22 | #include "mbed.h" |
wim | 0:7e120ffa56d3 | 23 | #include "TM1640.h" |
wim | 0:7e120ffa56d3 | 24 | |
wim | 0:7e120ffa56d3 | 25 | /** Constructor for class for driving TM1640 LED controller with Serial bus interface device. |
wim | 0:7e120ffa56d3 | 26 | * @brief Supports 16 digits @ 8 segments. |
wim | 0:7e120ffa56d3 | 27 | * |
wim | 0:7e120ffa56d3 | 28 | * @param PinName mosi Serial bus MOSI pin |
wim | 0:7e120ffa56d3 | 29 | * @param PinName sclk Serial bus SCLK pin |
wim | 0:7e120ffa56d3 | 30 | */ |
wim | 0:7e120ffa56d3 | 31 | TM1640::TM1640(PinName mosi, PinName sclk) : _mosi(mosi), _sclk(sclk) { |
wim | 0:7e120ffa56d3 | 32 | |
wim | 0:7e120ffa56d3 | 33 | _init(); |
wim | 0:7e120ffa56d3 | 34 | } |
wim | 0:7e120ffa56d3 | 35 | |
wim | 0:7e120ffa56d3 | 36 | /** Init the SPI interface and the controller |
wim | 0:7e120ffa56d3 | 37 | * @param none |
wim | 0:7e120ffa56d3 | 38 | * @return none |
wim | 0:7e120ffa56d3 | 39 | */ |
wim | 0:7e120ffa56d3 | 40 | void TM1640::_init(){ |
wim | 0:7e120ffa56d3 | 41 | |
wim | 0:7e120ffa56d3 | 42 | //TM1640 uses Serial bus that looks like SPI, but uses Start and Stop conditions like I2C instead of CS |
wim | 0:7e120ffa56d3 | 43 | //init Serial bus |
wim | 0:7e120ffa56d3 | 44 | _mosi=1; |
wim | 0:7e120ffa56d3 | 45 | _sclk=1; |
wim | 0:7e120ffa56d3 | 46 | |
wim | 0:7e120ffa56d3 | 47 | //init controller |
wim | 0:7e120ffa56d3 | 48 | _display = TM1640_DSP_ON; |
wim | 0:7e120ffa56d3 | 49 | _bright = TM1640_BRT_DEF; |
wim | 0:7e120ffa56d3 | 50 | _writeCmd(TM1640_DSP_CTRL_CMD, _display | _bright ); // Display control cmd, display on/off, brightness |
wim | 0:7e120ffa56d3 | 51 | |
wim | 0:7e120ffa56d3 | 52 | _writeCmd(TM1640_DATA_SET_CMD, TM1640_DATA_WR | TM1640_ADDR_INC | TM1640_MODE_NORM); // Data set cmd, normal mode, auto incr, write data |
wim | 0:7e120ffa56d3 | 53 | } |
wim | 0:7e120ffa56d3 | 54 | |
wim | 0:7e120ffa56d3 | 55 | |
wim | 0:7e120ffa56d3 | 56 | /** Clear the screen and locate to 0 |
wim | 0:7e120ffa56d3 | 57 | */ |
wim | 0:7e120ffa56d3 | 58 | void TM1640::cls() { |
wim | 0:7e120ffa56d3 | 59 | |
wim | 0:7e120ffa56d3 | 60 | _start(); |
wim | 0:7e120ffa56d3 | 61 | |
wim | 0:7e120ffa56d3 | 62 | _write(TM1640_ADDR_SET_CMD | 0x00); // Address set cmd, 0 |
wim | 0:7e120ffa56d3 | 63 | for (int cnt=0; cnt<TM1640_DISPLAY_MEM; cnt++) { |
wim | 0:7e120ffa56d3 | 64 | _write(0x00); // data |
wim | 0:7e120ffa56d3 | 65 | } |
wim | 0:7e120ffa56d3 | 66 | |
wim | 0:7e120ffa56d3 | 67 | _stop(); |
wim | 0:7e120ffa56d3 | 68 | } |
wim | 0:7e120ffa56d3 | 69 | |
wim | 0:7e120ffa56d3 | 70 | /** Set Brightness |
wim | 0:7e120ffa56d3 | 71 | * |
wim | 0:7e120ffa56d3 | 72 | * @param char brightness (3 significant bits, valid range 0..7 (1/16 .. 14/14 dutycycle) |
wim | 0:7e120ffa56d3 | 73 | * @return none |
wim | 0:7e120ffa56d3 | 74 | */ |
wim | 0:7e120ffa56d3 | 75 | void TM1640::setBrightness(char brightness){ |
wim | 0:7e120ffa56d3 | 76 | |
wim | 0:7e120ffa56d3 | 77 | _bright = brightness & TM1640_BRT_MSK; // mask invalid bits |
wim | 0:7e120ffa56d3 | 78 | |
wim | 0:7e120ffa56d3 | 79 | _writeCmd(TM1640_DSP_CTRL_CMD, _display | _bright ); // Display control cmd, display on/off, brightness |
wim | 0:7e120ffa56d3 | 80 | } |
wim | 0:7e120ffa56d3 | 81 | |
wim | 0:7e120ffa56d3 | 82 | /** Set the Display mode On/off |
wim | 0:7e120ffa56d3 | 83 | * |
wim | 0:7e120ffa56d3 | 84 | * @param bool display mode |
wim | 0:7e120ffa56d3 | 85 | */ |
wim | 0:7e120ffa56d3 | 86 | void TM1640::setDisplay(bool on) { |
wim | 0:7e120ffa56d3 | 87 | |
wim | 0:7e120ffa56d3 | 88 | if (on) { |
wim | 0:7e120ffa56d3 | 89 | _display = TM1640_DSP_ON; |
wim | 0:7e120ffa56d3 | 90 | } |
wim | 0:7e120ffa56d3 | 91 | else { |
wim | 0:7e120ffa56d3 | 92 | _display = TM1640_DSP_OFF; |
wim | 0:7e120ffa56d3 | 93 | } |
wim | 0:7e120ffa56d3 | 94 | |
wim | 0:7e120ffa56d3 | 95 | _writeCmd(TM1640_DSP_CTRL_CMD, _display | _bright ); // Display control cmd, display on/off, brightness |
wim | 0:7e120ffa56d3 | 96 | } |
wim | 0:7e120ffa56d3 | 97 | |
wim | 0:7e120ffa56d3 | 98 | /** Write databyte to TM1640 |
wim | 0:7e120ffa56d3 | 99 | * @param int address display memory location to write byte |
wim | 0:7e120ffa56d3 | 100 | * @param char data byte written at given address |
wim | 0:7e120ffa56d3 | 101 | * @return none |
wim | 0:7e120ffa56d3 | 102 | */ |
wim | 0:7e120ffa56d3 | 103 | void TM1640::writeData(char data, int address) { |
wim | 0:7e120ffa56d3 | 104 | |
wim | 0:7e120ffa56d3 | 105 | _start(); |
wim | 0:7e120ffa56d3 | 106 | |
wim | 0:7e120ffa56d3 | 107 | _write(TM1640_ADDR_SET_CMD | (address & TM1640_ADDR_MSK)); // Set Address cmd |
wim | 0:7e120ffa56d3 | 108 | _write(data); // data |
wim | 0:7e120ffa56d3 | 109 | |
wim | 0:7e120ffa56d3 | 110 | _stop(); |
wim | 0:7e120ffa56d3 | 111 | } |
wim | 0:7e120ffa56d3 | 112 | |
wim | 0:7e120ffa56d3 | 113 | /** Write Display datablock to TM1640 |
wim | 0:7e120ffa56d3 | 114 | * @param DisplayData_t data Array of TM1640_DISPLAY_MEM (=16) bytes for displaydata |
wim | 0:7e120ffa56d3 | 115 | * @param length number bytes to write (valid range 0..(TM1640_MAX_NR_GRIDS * TM1640_BYTES_PER_GRID) (=16), when starting at address 0) |
wim | 0:7e120ffa56d3 | 116 | * @param int address display memory location to write bytes (default = 0) |
wim | 0:7e120ffa56d3 | 117 | * @return none |
wim | 0:7e120ffa56d3 | 118 | */ |
wim | 0:7e120ffa56d3 | 119 | void TM1640::writeData(DisplayData_t data, int length, int address) { |
wim | 0:7e120ffa56d3 | 120 | |
wim | 0:7e120ffa56d3 | 121 | _start(); |
wim | 0:7e120ffa56d3 | 122 | |
wim | 0:7e120ffa56d3 | 123 | // sanity check |
wim | 0:7e120ffa56d3 | 124 | address &= TM1640_ADDR_MSK; |
wim | 0:7e120ffa56d3 | 125 | if (length < 0) {length = 0;} |
wim | 0:7e120ffa56d3 | 126 | if ((length + address) > TM1640_DISPLAY_MEM) {length = (TM1640_DISPLAY_MEM - address);} |
wim | 0:7e120ffa56d3 | 127 | |
wim | 0:7e120ffa56d3 | 128 | // _write(TM1640_ADDR_SET_CMD | 0x00); // Set Address at 0 |
wim | 0:7e120ffa56d3 | 129 | _write(TM1640_ADDR_SET_CMD | address); // Set Address |
wim | 0:7e120ffa56d3 | 130 | |
wim | 0:7e120ffa56d3 | 131 | for (int idx=0; idx<length; idx++) { |
wim | 0:7e120ffa56d3 | 132 | // _write(data[idx]); // data |
wim | 0:7e120ffa56d3 | 133 | _write(data[address + idx]); // data |
wim | 0:7e120ffa56d3 | 134 | } |
wim | 0:7e120ffa56d3 | 135 | |
wim | 0:7e120ffa56d3 | 136 | _stop(); |
wim | 0:7e120ffa56d3 | 137 | } |
wim | 0:7e120ffa56d3 | 138 | |
wim | 0:7e120ffa56d3 | 139 | |
wim | 0:7e120ffa56d3 | 140 | /** Generate Start condition for TM1640 |
wim | 0:7e120ffa56d3 | 141 | * @param none |
wim | 0:7e120ffa56d3 | 142 | * @return none |
wim | 0:7e120ffa56d3 | 143 | */ |
wim | 0:7e120ffa56d3 | 144 | void TM1640::_start() { |
wim | 0:7e120ffa56d3 | 145 | |
wim | 0:7e120ffa56d3 | 146 | _mosi=0; |
wim | 0:7e120ffa56d3 | 147 | wait_us(1); |
wim | 0:7e120ffa56d3 | 148 | _sclk=0; |
wim | 0:7e120ffa56d3 | 149 | wait_us(1); |
wim | 0:7e120ffa56d3 | 150 | } |
wim | 0:7e120ffa56d3 | 151 | |
wim | 0:7e120ffa56d3 | 152 | /** Generate Stop condition for TM1640 |
wim | 0:7e120ffa56d3 | 153 | * @param none |
wim | 0:7e120ffa56d3 | 154 | * @return none |
wim | 0:7e120ffa56d3 | 155 | */ |
wim | 0:7e120ffa56d3 | 156 | void TM1640::_stop() { |
wim | 0:7e120ffa56d3 | 157 | |
wim | 0:7e120ffa56d3 | 158 | _mosi=0; |
wim | 0:7e120ffa56d3 | 159 | wait_us(1); |
wim | 0:7e120ffa56d3 | 160 | _sclk=1; |
wim | 0:7e120ffa56d3 | 161 | wait_us(1); |
wim | 0:7e120ffa56d3 | 162 | _mosi=1; |
wim | 0:7e120ffa56d3 | 163 | wait_us(1); |
wim | 0:7e120ffa56d3 | 164 | } |
wim | 0:7e120ffa56d3 | 165 | |
wim | 0:7e120ffa56d3 | 166 | /** Send byte to TM1640 |
wim | 0:7e120ffa56d3 | 167 | * @param int data |
wim | 0:7e120ffa56d3 | 168 | * @return none |
wim | 0:7e120ffa56d3 | 169 | */ |
wim | 0:7e120ffa56d3 | 170 | void TM1640::_write(int data) { |
wim | 0:7e120ffa56d3 | 171 | |
wim | 0:7e120ffa56d3 | 172 | for (int bit=0; bit<8; bit++) { |
wim | 0:7e120ffa56d3 | 173 | //The TM1640 expects LSB first, whereas SPI is MSB first |
wim | 0:7e120ffa56d3 | 174 | if (((data >> bit) & 0x01) == 0x01) { |
wim | 0:7e120ffa56d3 | 175 | _mosi=1; |
wim | 0:7e120ffa56d3 | 176 | } |
wim | 0:7e120ffa56d3 | 177 | else { |
wim | 0:7e120ffa56d3 | 178 | _mosi=0; |
wim | 0:7e120ffa56d3 | 179 | } |
wim | 0:7e120ffa56d3 | 180 | wait_us(1); |
wim | 0:7e120ffa56d3 | 181 | _sclk=1; |
wim | 0:7e120ffa56d3 | 182 | wait_us(1); |
wim | 0:7e120ffa56d3 | 183 | _sclk=0; |
wim | 0:7e120ffa56d3 | 184 | wait_us(1); |
wim | 0:7e120ffa56d3 | 185 | } |
wim | 0:7e120ffa56d3 | 186 | } |
wim | 0:7e120ffa56d3 | 187 | |
wim | 0:7e120ffa56d3 | 188 | |
wim | 0:7e120ffa56d3 | 189 | /** Write command and parameter to TM1640 |
wim | 0:7e120ffa56d3 | 190 | * @param int cmd Command byte |
wim | 0:7e120ffa56d3 | 191 | * &Param int data Parameters for command |
wim | 0:7e120ffa56d3 | 192 | * @return none |
wim | 0:7e120ffa56d3 | 193 | */ |
wim | 0:7e120ffa56d3 | 194 | void TM1640::_writeCmd(int cmd, int data){ |
wim | 0:7e120ffa56d3 | 195 | |
wim | 0:7e120ffa56d3 | 196 | _start(); |
wim | 0:7e120ffa56d3 | 197 | |
wim | 0:7e120ffa56d3 | 198 | _write((cmd & TM1640_CMD_MSK) | (data & ~TM1640_CMD_MSK)); |
wim | 0:7e120ffa56d3 | 199 | |
wim | 0:7e120ffa56d3 | 200 | _stop(); |
wim | 0:7e120ffa56d3 | 201 | } |
wim | 0:7e120ffa56d3 | 202 | |
wim | 0:7e120ffa56d3 | 203 | |
wim | 0:7e120ffa56d3 | 204 | #if (LM1640_TEST == 1) |
wim | 0:7e120ffa56d3 | 205 | // Derived class for TM1640 used in LED&KEY display unit |
wim | 0:7e120ffa56d3 | 206 | // |
wim | 0:7e120ffa56d3 | 207 | |
wim | 0:7e120ffa56d3 | 208 | /** Constructor for class for driving TM1640 LED controller as used in LM1640 |
wim | 0:7e120ffa56d3 | 209 | * |
wim | 0:7e120ffa56d3 | 210 | * @brief Supports 8 Digits of 7 Segments + DP. |
wim | 0:7e120ffa56d3 | 211 | * |
wim | 0:7e120ffa56d3 | 212 | * @param PinName mosi Serial bus MOSI pin |
wim | 0:7e120ffa56d3 | 213 | * @param PinName sclk Serial bus SCLK pin |
wim | 0:7e120ffa56d3 | 214 | */ |
wim | 0:7e120ffa56d3 | 215 | TM1640_LM1640::TM1640_LM1640(PinName mosi, PinName sclk) : TM1640(mosi, sclk) { |
wim | 0:7e120ffa56d3 | 216 | _column = 0; |
wim | 0:7e120ffa56d3 | 217 | _columns = LM1640_NR_DIGITS; |
wim | 0:7e120ffa56d3 | 218 | } |
wim | 0:7e120ffa56d3 | 219 | |
wim | 0:7e120ffa56d3 | 220 | #if(0) |
wim | 0:7e120ffa56d3 | 221 | #if DOXYGEN_ONLY |
wim | 0:7e120ffa56d3 | 222 | /** Write a character to the Display |
wim | 0:7e120ffa56d3 | 223 | * |
wim | 0:7e120ffa56d3 | 224 | * @param c The character to write to the display |
wim | 0:7e120ffa56d3 | 225 | */ |
wim | 0:7e120ffa56d3 | 226 | int putc(int c); |
wim | 0:7e120ffa56d3 | 227 | |
wim | 0:7e120ffa56d3 | 228 | /** Write a formatted string to the Display |
wim | 0:7e120ffa56d3 | 229 | * |
wim | 0:7e120ffa56d3 | 230 | * @param format A printf-style format string, followed by the |
wim | 0:7e120ffa56d3 | 231 | * variables to use in formatting the string. |
wim | 0:7e120ffa56d3 | 232 | */ |
wim | 0:7e120ffa56d3 | 233 | int printf(const char* format, ...); |
wim | 0:7e120ffa56d3 | 234 | #endif |
wim | 0:7e120ffa56d3 | 235 | #endif |
wim | 0:7e120ffa56d3 | 236 | |
wim | 0:7e120ffa56d3 | 237 | /** Locate cursor to a screen column |
wim | 0:7e120ffa56d3 | 238 | * |
wim | 0:7e120ffa56d3 | 239 | * @param column The horizontal position from the left, indexed from 0 |
wim | 0:7e120ffa56d3 | 240 | */ |
wim | 0:7e120ffa56d3 | 241 | void TM1640_LM1640::locate(int column) { |
wim | 0:7e120ffa56d3 | 242 | //sanity check |
wim | 0:7e120ffa56d3 | 243 | if (column < 0) {column = 0;} |
wim | 0:7e120ffa56d3 | 244 | if (column > (_columns - 1)) {column = _columns - 1;} |
wim | 0:7e120ffa56d3 | 245 | |
wim | 0:7e120ffa56d3 | 246 | _column = column; |
wim | 0:7e120ffa56d3 | 247 | } |
wim | 0:7e120ffa56d3 | 248 | |
wim | 0:7e120ffa56d3 | 249 | |
wim | 0:7e120ffa56d3 | 250 | /** Number of screen columns |
wim | 0:7e120ffa56d3 | 251 | * |
wim | 0:7e120ffa56d3 | 252 | * @param none |
wim | 0:7e120ffa56d3 | 253 | * @return columns |
wim | 0:7e120ffa56d3 | 254 | */ |
wim | 0:7e120ffa56d3 | 255 | int TM1640_LM1640::columns() { |
wim | 0:7e120ffa56d3 | 256 | return _columns; |
wim | 0:7e120ffa56d3 | 257 | } |
wim | 0:7e120ffa56d3 | 258 | |
wim | 0:7e120ffa56d3 | 259 | |
wim | 0:7e120ffa56d3 | 260 | /** Clear the screen and locate to 0 |
wim | 0:7e120ffa56d3 | 261 | * @param bool clrAll Clear Icons also (default = false) |
wim | 0:7e120ffa56d3 | 262 | */ |
wim | 0:7e120ffa56d3 | 263 | void TM1640_LM1640::cls(bool clrAll) { |
wim | 0:7e120ffa56d3 | 264 | |
wim | 0:7e120ffa56d3 | 265 | if (clrAll) { |
wim | 0:7e120ffa56d3 | 266 | //clear local buffer (inclumosig Icons) |
wim | 0:7e120ffa56d3 | 267 | for (int idx=0; idx < LM1640_NR_GRIDS; idx++) { |
wim | 0:7e120ffa56d3 | 268 | _displaybuffer[idx] = 0x00; |
wim | 0:7e120ffa56d3 | 269 | } |
wim | 0:7e120ffa56d3 | 270 | } |
wim | 0:7e120ffa56d3 | 271 | else { |
wim | 0:7e120ffa56d3 | 272 | //clear local buffer (preserving Icons) |
wim | 0:7e120ffa56d3 | 273 | for (int idx=0; idx < LM1640_NR_GRIDS; idx++) { |
wim | 0:7e120ffa56d3 | 274 | _displaybuffer[idx] = _displaybuffer[idx] & MASK_ICON_GRID[idx]; |
wim | 0:7e120ffa56d3 | 275 | } |
wim | 0:7e120ffa56d3 | 276 | } |
wim | 0:7e120ffa56d3 | 277 | |
wim | 0:7e120ffa56d3 | 278 | writeData(_displaybuffer, (LM1640_NR_GRIDS * TM1640_BYTES_PER_GRID)); |
wim | 0:7e120ffa56d3 | 279 | |
wim | 0:7e120ffa56d3 | 280 | _column = 0; |
wim | 0:7e120ffa56d3 | 281 | } |
wim | 0:7e120ffa56d3 | 282 | |
wim | 0:7e120ffa56d3 | 283 | /** Set Icon |
wim | 0:7e120ffa56d3 | 284 | * |
wim | 0:7e120ffa56d3 | 285 | * @param Icon icon Enums Icon has Grid position encoded in 8 MSBs, Icon pattern encoded in 16 LSBs |
wim | 0:7e120ffa56d3 | 286 | * @return none |
wim | 0:7e120ffa56d3 | 287 | */ |
wim | 0:7e120ffa56d3 | 288 | void TM1640_LM1640::setIcon(Icon icon) { |
wim | 0:7e120ffa56d3 | 289 | int addr, icn; |
wim | 0:7e120ffa56d3 | 290 | |
wim | 0:7e120ffa56d3 | 291 | icn = icon & 0xFFFF; |
wim | 0:7e120ffa56d3 | 292 | addr = (icon >> 24) & 0xFF; |
wim | 0:7e120ffa56d3 | 293 | addr = (addr - 1); |
wim | 0:7e120ffa56d3 | 294 | |
wim | 0:7e120ffa56d3 | 295 | //Save char...and set bits for icon to write |
wim | 0:7e120ffa56d3 | 296 | _displaybuffer[addr] = _displaybuffer[addr] | LO(icn); |
wim | 0:7e120ffa56d3 | 297 | // writeData(_displaybuffer, (LM1640_NR_GRIDS * TM1640_BYTES_PER_GRID)); |
wim | 0:7e120ffa56d3 | 298 | writeData(_displaybuffer, TM1640_BYTES_PER_GRID, addr); |
wim | 0:7e120ffa56d3 | 299 | } |
wim | 0:7e120ffa56d3 | 300 | |
wim | 0:7e120ffa56d3 | 301 | /** Clr Icon |
wim | 0:7e120ffa56d3 | 302 | * |
wim | 0:7e120ffa56d3 | 303 | * @param Icon icon Enums Icon has Grid position encoded in 8 MSBs, Icon pattern encoded in 16 LSBs |
wim | 0:7e120ffa56d3 | 304 | * @return none |
wim | 0:7e120ffa56d3 | 305 | */ |
wim | 0:7e120ffa56d3 | 306 | void TM1640_LM1640::clrIcon(Icon icon) { |
wim | 0:7e120ffa56d3 | 307 | int addr, icn; |
wim | 0:7e120ffa56d3 | 308 | |
wim | 0:7e120ffa56d3 | 309 | icn = icon & 0xFFFF; |
wim | 0:7e120ffa56d3 | 310 | addr = (icon >> 24) & 0xFF; |
wim | 0:7e120ffa56d3 | 311 | addr = (addr - 1); |
wim | 0:7e120ffa56d3 | 312 | |
wim | 0:7e120ffa56d3 | 313 | //Save char...and clr bits for icon to write |
wim | 0:7e120ffa56d3 | 314 | _displaybuffer[addr] = _displaybuffer[addr] & ~LO(icn); |
wim | 0:7e120ffa56d3 | 315 | // writeData(_displaybuffer, (LM1640_NR_GRIDS * TM1640_BYTES_PER_GRID)); |
wim | 0:7e120ffa56d3 | 316 | writeData(_displaybuffer, TM1640_BYTES_PER_GRID, addr); |
wim | 0:7e120ffa56d3 | 317 | } |
wim | 0:7e120ffa56d3 | 318 | |
wim | 0:7e120ffa56d3 | 319 | |
wim | 0:7e120ffa56d3 | 320 | /** Set User Defined Characters (UDC) |
wim | 0:7e120ffa56d3 | 321 | * |
wim | 0:7e120ffa56d3 | 322 | * @param unsigned char udc_idx The Index of the UDC (0..7) |
wim | 0:7e120ffa56d3 | 323 | * @param int udc_data The bitpattern for the UDC (8 bits) |
wim | 0:7e120ffa56d3 | 324 | */ |
wim | 0:7e120ffa56d3 | 325 | void TM1640_LM1640::setUDC(unsigned char udc_idx, int udc_data) { |
wim | 0:7e120ffa56d3 | 326 | |
wim | 0:7e120ffa56d3 | 327 | //Sanity check |
wim | 0:7e120ffa56d3 | 328 | if (udc_idx > (LM1640_NR_UDC-1)) { |
wim | 0:7e120ffa56d3 | 329 | return; |
wim | 0:7e120ffa56d3 | 330 | } |
wim | 0:7e120ffa56d3 | 331 | // Mask out Icon bits? |
wim | 0:7e120ffa56d3 | 332 | |
wim | 0:7e120ffa56d3 | 333 | _UDC_7S[udc_idx] = LO(udc_data); |
wim | 0:7e120ffa56d3 | 334 | } |
wim | 0:7e120ffa56d3 | 335 | |
wim | 0:7e120ffa56d3 | 336 | |
wim | 0:7e120ffa56d3 | 337 | /** Write a single character (Stream implementation) |
wim | 0:7e120ffa56d3 | 338 | */ |
wim | 0:7e120ffa56d3 | 339 | int TM1640_LM1640::_putc(int value) { |
wim | 0:7e120ffa56d3 | 340 | int addr; |
wim | 0:7e120ffa56d3 | 341 | bool validChar = false; |
wim | 0:7e120ffa56d3 | 342 | char pattern = 0x00; |
wim | 0:7e120ffa56d3 | 343 | |
wim | 0:7e120ffa56d3 | 344 | if ((value == '\n') || (value == '\r')) { |
wim | 0:7e120ffa56d3 | 345 | //No character to write |
wim | 0:7e120ffa56d3 | 346 | validChar = false; |
wim | 0:7e120ffa56d3 | 347 | |
wim | 0:7e120ffa56d3 | 348 | //Update Cursor |
wim | 0:7e120ffa56d3 | 349 | _column = 0; |
wim | 0:7e120ffa56d3 | 350 | } |
wim | 0:7e120ffa56d3 | 351 | else if ((value == '.') || (value == ',')) { |
wim | 0:7e120ffa56d3 | 352 | //No character to write |
wim | 0:7e120ffa56d3 | 353 | validChar = false; |
wim | 0:7e120ffa56d3 | 354 | pattern = S7_DP; // placeholder for all DPs |
wim | 0:7e120ffa56d3 | 355 | |
wim | 0:7e120ffa56d3 | 356 | // Check to see that DP can be shown for current column |
wim | 0:7e120ffa56d3 | 357 | if (_column > 0) { |
wim | 0:7e120ffa56d3 | 358 | //Translate between _column and displaybuffer entries |
wim | 0:7e120ffa56d3 | 359 | //Add DP to bitpattern of digit left of current column. |
wim | 0:7e120ffa56d3 | 360 | addr = (_column - 1); |
wim | 0:7e120ffa56d3 | 361 | |
wim | 0:7e120ffa56d3 | 362 | //Save icons...and set bits for decimal point to write |
wim | 0:7e120ffa56d3 | 363 | _displaybuffer[addr] = _displaybuffer[addr] | pattern; |
wim | 0:7e120ffa56d3 | 364 | // writeData(_displaybuffer, (LM1640_NR_GRIDS * TM1640_BYTES_PER_GRID)); |
wim | 0:7e120ffa56d3 | 365 | writeData(_displaybuffer, TM1640_BYTES_PER_GRID, addr); |
wim | 0:7e120ffa56d3 | 366 | |
wim | 0:7e120ffa56d3 | 367 | //No Cursor Update |
wim | 0:7e120ffa56d3 | 368 | } |
wim | 0:7e120ffa56d3 | 369 | } |
wim | 0:7e120ffa56d3 | 370 | else if ((value >= 0) && (value < LM1640_NR_UDC)) { |
wim | 0:7e120ffa56d3 | 371 | //Character to write |
wim | 0:7e120ffa56d3 | 372 | validChar = true; |
wim | 0:7e120ffa56d3 | 373 | pattern = _UDC_7S[value]; |
wim | 0:7e120ffa56d3 | 374 | } |
wim | 0:7e120ffa56d3 | 375 | |
wim | 0:7e120ffa56d3 | 376 | #if (SHOW_ASCII == 1) |
wim | 0:7e120ffa56d3 | 377 | //display all ASCII characters |
wim | 0:7e120ffa56d3 | 378 | else if ((value >= FONT_7S_START) && (value <= FONT_7S_END)) { |
wim | 0:7e120ffa56d3 | 379 | //Character to write |
wim | 0:7e120ffa56d3 | 380 | validChar = true; |
wim | 0:7e120ffa56d3 | 381 | pattern = FONT_7S[value - FONT_7S_START]; |
wim | 0:7e120ffa56d3 | 382 | } // else |
wim | 0:7e120ffa56d3 | 383 | #else |
wim | 0:7e120ffa56d3 | 384 | //display only digits and hex characters |
wim | 0:7e120ffa56d3 | 385 | else if (value == '-') { |
wim | 0:7e120ffa56d3 | 386 | //Character to write |
wim | 0:7e120ffa56d3 | 387 | validChar = true; |
wim | 0:7e120ffa56d3 | 388 | pattern = C7_MIN; |
wim | 0:7e120ffa56d3 | 389 | } |
wim | 0:7e120ffa56d3 | 390 | else if ((value >= (int)'0') && (value <= (int) '9')) { |
wim | 0:7e120ffa56d3 | 391 | //Character to write |
wim | 0:7e120ffa56d3 | 392 | validChar = true; |
wim | 0:7e120ffa56d3 | 393 | pattern = FONT_7S[value - (int) '0']; |
wim | 0:7e120ffa56d3 | 394 | } |
wim | 0:7e120ffa56d3 | 395 | else if ((value >= (int) 'A') && (value <= (int) 'F')) { |
wim | 0:7e120ffa56d3 | 396 | //Character to write |
wim | 0:7e120ffa56d3 | 397 | validChar = true; |
wim | 0:7e120ffa56d3 | 398 | pattern = FONT_7S[10 + value - (int) 'A']; |
wim | 0:7e120ffa56d3 | 399 | } |
wim | 0:7e120ffa56d3 | 400 | else if ((value >= (int) 'a') && (value <= (int) 'f')) { |
wim | 0:7e120ffa56d3 | 401 | //Character to write |
wim | 0:7e120ffa56d3 | 402 | validChar = true; |
wim | 0:7e120ffa56d3 | 403 | pattern = FONT_7S[10 + value - (int) 'a']; |
wim | 0:7e120ffa56d3 | 404 | } //else |
wim | 0:7e120ffa56d3 | 405 | #endif |
wim | 0:7e120ffa56d3 | 406 | |
wim | 0:7e120ffa56d3 | 407 | if (validChar) { |
wim | 0:7e120ffa56d3 | 408 | //Character to write |
wim | 0:7e120ffa56d3 | 409 | |
wim | 0:7e120ffa56d3 | 410 | //Translate between _column and displaybuffer entries |
wim | 0:7e120ffa56d3 | 411 | addr = _column; |
wim | 0:7e120ffa56d3 | 412 | |
wim | 0:7e120ffa56d3 | 413 | //Save icons...and set bits for character to write |
wim | 0:7e120ffa56d3 | 414 | _displaybuffer[addr] = (_displaybuffer[addr] & MASK_ICON_GRID[_column]) | pattern; |
wim | 0:7e120ffa56d3 | 415 | |
wim | 0:7e120ffa56d3 | 416 | // writeData(_displaybuffer, (LM1640_NR_GRIDS * TM1640_BYTES_PER_GRID)); |
wim | 0:7e120ffa56d3 | 417 | writeData(_displaybuffer, TM1640_BYTES_PER_GRID, addr); |
wim | 0:7e120ffa56d3 | 418 | |
wim | 0:7e120ffa56d3 | 419 | //Update Cursor |
wim | 0:7e120ffa56d3 | 420 | _column++; |
wim | 0:7e120ffa56d3 | 421 | if (_column > (LM1640_NR_DIGITS - 1)) { |
wim | 0:7e120ffa56d3 | 422 | _column = 0; |
wim | 0:7e120ffa56d3 | 423 | } |
wim | 0:7e120ffa56d3 | 424 | |
wim | 0:7e120ffa56d3 | 425 | } // if validChar |
wim | 0:7e120ffa56d3 | 426 | |
wim | 0:7e120ffa56d3 | 427 | return value; |
wim | 0:7e120ffa56d3 | 428 | } |
wim | 0:7e120ffa56d3 | 429 | |
wim | 0:7e120ffa56d3 | 430 | |
wim | 0:7e120ffa56d3 | 431 | // get a single character (Stream implementation) |
wim | 0:7e120ffa56d3 | 432 | int TM1640_LM1640::_getc() { |
wim | 0:7e120ffa56d3 | 433 | return -1; |
wim | 0:7e120ffa56d3 | 434 | } |
wim | 0:7e120ffa56d3 | 435 | |
wim | 0:7e120ffa56d3 | 436 | #endif |