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.
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.h
- Committer:
- wim
- Date:
- 2016-01-14
- Revision:
- 2:eaf2f5d1af34
- Parent:
- 1:1adf993a3e34
File content as of revision 2:eaf2f5d1af34:
/* mbed PT6964 Library, for PT6964 LED controller * Copyright (c) 2015, v01: WH, Initial version * 2015, v02: WH, rename Digit/Grid * 2016, v03: WH, updated Icon handling, UDCs and _putc() * 2016, v04: WH, Refactored display and keyboard defines * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. */ #ifndef PT6964_H #define PT6964_H #include "Font_7Seg.h" /** An interface for driving PT6964 LED controller * * @code * #include "mbed.h" * #include "PT6964.h" * * DisplayData_t size is 8 bytes (4 grids @ 13 segments) OR 10 bytes (5 grids @ 12 segments) OR * 12 bytes (6 grids @ 11 segments) OR 14 bytes (7 grids @ 10 segments) * PT6964::DisplayData_t mbed_str = {0xDA,0x00, 0x7C,0x00, 0x3C,0x01, 0xF6,0x00, 0x00,0x00, 0x00,0x00, 0x00,0x00}; * PT6964::DisplayData_t all_str = {0xFF,0x0F, 0xFF,0x0F, 0xFF,0x0F, 0xFF,0x0F, 0xFF,0x0F, 0xFF,0x0F, 0xFF,0x0F}; * * // KeyData_t size is 5 bytes * PT6964::KeyData_t keydata; * * // PT6964 declaration, Default setting 7 Grids @ 10 Segments * PT6964 PT6964(p5,p6,p7, p8); * * int main() { * PT6964.cls(); * PT6964.writeData(all_str); * wait(4); * PT6964.writeData(mbed_str); * wait(1); * PT6964.setBrightness(PT6964_BRT0); * wait(1); * PT6964.setBrightness(PT6964_BRT3); * * while (1) { * // Check and read keydata * if (PT6964.getKeys(&keydata)) { * pc.printf("Keydata 0..4 = 0x%02x 0x%02x 0x%02x 0x%02x 0x%02x\r\n", keydata[0], keydata[1], keydata[2], keydata[3], keydata[4]); * * if (keydata[0] == 0x10) { //sw2 * PT6964.cls(); * PT6964.writeData(all_str); * } * } * } * } * @endcode */ //PT6964 Display and Keymatrix data #define PT6964_MAX_NR_GRIDS 7 #define PT6964_BYTES_PER_GRID 2 //Significant bits Keymatrix data #define PT6964_KEY_MSK 0x1B //Memory size in bytes for Display and Keymatrix #define PT6964_DISPLAY_MEM (PT6964_MAX_NR_GRIDS * PT6964_BYTES_PER_GRID) #define PT6964_KEY_MEM 5 //Reserved bits for commands #define PT6964_CMD_MSK 0xC0 //Mode setting command #define PT6964_MODE_SET_CMD 0x00 #define PT6964_GR4_SEG13 0x00 #define PT6964_GR5_SEG12 0x01 #define PT6964_GR6_SEG11 0x02 #define PT6964_GR7_SEG10 0x03 //default //Data setting commands #define PT6964_DATA_SET_CMD 0x40 #define PT6964_DATA_WR 0x00 #define PT6964_KEY_RD 0x02 #define PT6964_ADDR_INC 0x00 #define PT6964_ADDR_FIXED 0x04 #define PT6964_MODE_NORM 0x00 #define PT6964_MODE_TEST 0x08 //Address setting commands #define PT6964_ADDR_SET_CMD 0xC0 #define PT6964_ADDR_MSK 0x0F //Display control commands #define PT6964_DSP_CTRL_CMD 0x80 #define PT6964_BRT_MSK 0x07 #define PT6964_BRT0 0x00 //Pulsewidth 1/16 #define PT6964_BRT1 0x01 #define PT6964_BRT2 0x02 #define PT6964_BRT3 0x03 #define PT6964_BRT4 0x04 #define PT6964_BRT5 0x05 #define PT6964_BRT6 0x06 #define PT6964_BRT7 0x07 //Pulsewidth 14/16 #define PT6964_BRT_DEF PT6964_BRT3 #define PT6964_DSP_OFF 0x00 #define PT6964_DSP_ON 0x08 /** A class for driving Princeton PT6964 LED controller * Note: the PT6964 is also available from other chipvendors eg AIP1628, HT1628, CM1628, SM1628 * * @brief Supports 4 Grids @ 13 Segments or 5 Grids @ 12 Segments or 6 Grids @ 11 Segments or 7 Grids @ 10 Segments. * Also supports a scanned keyboard of upto 20 keys. * SPI bus interface device. */ class PT6964 { public: /** Enums for display mode */ enum Mode { Grid4_Seg13 = PT6964_GR4_SEG13, Grid5_Seg12 = PT6964_GR5_SEG12, Grid6_Seg11 = PT6964_GR6_SEG11, Grid7_Seg10 = PT6964_GR7_SEG10 }; /** Datatypes for display and keymatrix data */ typedef char DisplayData_t[PT6964_DISPLAY_MEM]; typedef char KeyData_t[PT6964_KEY_MEM]; /** Constructor for class for driving Princeton PT6964 LED controller * * @brief Supports 4 Grids @ 13 segments or 5 Grids @ 12 segments or 6 Grids @ 11 Segments or 7 Grids @ 10 Segments. * Also supports a scanned keyboard of upto 20 keys. * SPI bus interface device. * * @param PinName mosi, miso, sclk, cs SPI bus pins * @param Mode selects either Grids/Segments (default 7 Grids @ 10 Segments) */ PT6964(PinName mosi, PinName miso, PinName sclk, PinName cs, Mode mode=Grid7_Seg10); /** Clear the screen and locate to 0 */ void cls(); /** Write databyte to PT6964 * @param int address display memory location to write byte * @param char data byte written at given address * @return none */ void writeData(int address, char data); /** Write Display datablock to PT6964 * @param DisplayData_t data Array of PT6964_DISPLAY_MEM (=14) bytes for displaydata (starting at address 0) * @param length number bytes to write (valid range 0..PT6964_DISPLAY_MEM (=14), starting at address 0) * @return none */ void writeData(DisplayData_t data, int length = PT6964_DISPLAY_MEM); /** Read keydata block from PT6964 * @param *keydata Ptr to Array of PT6964_KEY_MEM (=5) bytes for keydata * @return bool keypress True when at least one key was pressed * * Note: Due to the hardware configuration the PT6964 key matrix scanner will detect multiple keys pressed at same time, * but this may result in some spurious keys also being set in keypress data array. * It may be best to ignore all keys in those situations. That option is implemented in this method depending on #define setting. */ bool getKeys(KeyData_t *keydata); /** Set Brightness * * @param char brightness (3 significant bits, valid range 0..7 (1/16 .. 14/14 dutycycle) * @return none */ void setBrightness(char brightness = PT6964_BRT_DEF); /** Set the Display mode On/off * * @param bool display mode */ void setDisplay(bool on); private: SPI _spi; DigitalOut _cs; Mode _mode; char _display; char _bright; /** Init the SPI interface and the controller * @param none * @return none */ void _init(); /** Helper to reverse all command or databits. The PT6964 expects LSB first, whereas SPI is MSB first * @param char data * @return bitreversed data */ char _flip(char data); /** Write command and parameter to PT6964 * @param int cmd Command byte * &Param int data Parameters for command * @return none */ void _writeCmd(int cmd, int data); }; // Derived class for PT6964 used in DVD-538A front display unit // #define DVD538A_NR_GRIDS 5 #define DVD538A_NR_DIGITS 4 #define DVD538A_NR_UDC 8 /** Constructor for class for driving Princeton PT6964 controller as used in DVD538A * * @brief Supports 4 Digits of 7 Segments, 1 Grid of 9 Icons. Also supports a scanned keyboard of 4 keys. * * @param PinName mosi, miso, sclk, cs SPI bus pins */ class PT6964_DVD538A : public PT6964, public Stream { public: /** Enums for Icons */ // Grid encoded in 8 MSBs, Icon pattern encoded in 16 LSBs enum Icon { LD1 = (1<<24) | S7_LD1, LD2 = (1<<24) | S7_LD2, CD = (1<<24) | S7_CD, DVD = (1<<24) | S7_DVD, PSE = (1<<24) | S7_PSE, PLY = (1<<24) | S7_PLY, COL2 = (1<<24) | S7_COL2, MP4 = (1<<24) | S7_MP4, MP3 = (1<<24) | S7_MP3 }; typedef short UDCData_t[DVD538A_NR_UDC]; /** Constructor for class for driving Princeton PT6964 VFD controller as used in DVD538A * * @brief Supports 4 Digits of 7 Segments, 1 Grid of 9 Icons. Also supports a scanned keyboard of 4 keys. * * @param PinName mosi, miso, sclk, cs SPI bus pins */ PT6964_DVD538A(PinName mosi, PinName miso, PinName sclk, PinName cs); #if DOXYGEN_ONLY /** Write a character to the Display * * @param c The character to write to the display */ int putc(int c); /** Write a formatted string to the Display * * @param format A printf-style format string, followed by the * variables to use in formatting the string. */ int printf(const char* format, ...); #endif /** Locate cursor to a screen column * * @param column The horizontal position from the left, indexed from 0 */ void locate(int column); /** Clear the screen and locate to 0 * @param bool clrAll Clear Icons also (default = false) */ void cls(bool clrAll = false); /** Set Icon * * @param Icon icon Enums Icon has Grid position encoded in 8 MSBs, Icon pattern encoded in 16 LSBs * @return none */ void setIcon(Icon icon); /** Clr Icon * * @param Icon icon Enums Icon has Grid position encoded in 8 MSBs, Icon pattern encoded in 16 LSBs * @return none */ void clrIcon(Icon icon); /** Set User Defined Characters (UDC) * * @param unsigned char udc_idx The Index of the UDC (0..7) * @param int udc_data The bitpattern for the UDC (16 bits) */ void setUDC(unsigned char udc_idx, int udc_data); /** Number of screen columns * * @param none * @return columns */ int columns(); /** Write Display datablock to PT6964 * @param DisplayData_t data Array of PT6964_DISPLAY_MEM (=14) bytes for displaydata (starting at address 0) * @param length number bytes to write (valid range 0..(DVD538A_NR_GRIDS*2) (=14), starting at address 0) * @return none */ void writeData(DisplayData_t data, int length = (DVD538A_NR_GRIDS*2)) { PT6964::writeData(data, length); } protected: // Stream implementation functions virtual int _putc(int value); virtual int _getc(); private: int _column; int _columns; DisplayData_t _displaybuffer; UDCData_t _UDC_7S; }; #endif