Wim Huiskamp
TM1638 LED controller. Max 80 LEDs, Max 24 Key scan. Supports LED&KEY, QYF-TM1638 and JY-LKM1638 module.
Dependents: mbed_TM1638 Otjimaniya RL0201-V1
See here for more information.
Revision 0:201dfacbe0e5, committed 2015-12-21
- Comitter:
- wim
- Date:
- Mon Dec 21 22:39:22 2015 +0000
- Child:
- 1:1f2453ed85d7
- Commit message:
- First version
Changed in this revision
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/Font_7Seg.cpp Mon Dec 21 22:39:22 2015 +0000
@@ -0,0 +1,69 @@
+/* mbed LED Font Library, for TM1638 LED controller
+ * Copyright (c) 2015, v01: WH, Initial version, Test in LEDKEY8
+ *
+ * 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.
+ */
+#include "Font_7Seg.h"
+
+// Select one of the testboards for TM1638 LED controller
+#if (LEDKEY8_TEST == 1)
+
+//Mask for blending out and restoring Icons
+const char MASK_ICON_GRID[][2] = {
+ {LO(S7_ICON_GR1), HI(S7_ICON_GR1)},
+ {LO(S7_ICON_GR2), HI(S7_ICON_GR2)},
+ {LO(S7_ICON_GR3), HI(S7_ICON_GR3)},
+ {LO(S7_ICON_GR4), HI(S7_ICON_GR4)},
+ {LO(S7_ICON_GR5), HI(S7_ICON_GR5)},
+ {LO(S7_ICON_GR6), HI(S7_ICON_GR6)},
+ {LO(S7_ICON_GR7), HI(S7_ICON_GR7)},
+ {LO(S7_ICON_GR8), HI(S7_ICON_GR8)},
+ {LO(S7_ICON_GR9), HI(S7_ICON_GR9)},
+ {LO(S7_ICON_GR10), HI(S7_ICON_GR10)}
+ };
+
+
+
+
+// ASCII Font definition table for transmission to TM1638
+//
+//#define FONT_7S_START 0x20
+//#define FONT_7S_END 0x7F
+//#define FONT_7S_NR_CHARS (FONT_7_END - FONT_7S_START + 1)
+
+const char FONT_7S[] = {
+ C7_0, //48 0x30
+ C7_1,
+ C7_2,
+ C7_3,
+ C7_4,
+ C7_5,
+ C7_6,
+ C7_7,
+ C7_8,
+ C7_9,
+ C7_A, //65 0x41, A
+ C7_B,
+ C7_C,
+ C7_D,
+ C7_E,
+ C7_F
+ };// 127
+
+#endif
\ No newline at end of file
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/Font_7Seg.h Mon Dec 21 22:39:22 2015 +0000 @@ -0,0 +1,181 @@ +/* mbed LED Font Library, for TM1638 LED Controller + * Copyright (c) 2015, v01: WH, Initial version, Test in LEDKEY8 + * + * 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 MBED_FONT_7SEG_H +#define MBED_FONT_7SEG_H + +// Select one of the testboards for TM1638 controller +#include "TM1638_Config.h" + +#if ((LEDKEY8_TEST == 1) || (TM1638_TEST == 1)) +// Segment bit positions for 7 Segment display using the LEDKEY8 mapping for TM1638 +// Modify this table for different 'bit-to-segment' mappings. The ASCII character defines and the FONT_7S const table below +// will be adapted automatically according to the bit-to-segment mapping. Obviously this will only work when the segment +// mapping is identical for every digit position. This will be the case unless the hardware designer really hates software developers. +// +#define S7_A 0x0001 +#define S7_B 0x0002 +#define S7_C 0x0004 +#define S7_D 0x0008 +#define S7_E 0x0010 +#define S7_F 0x0020 +#define S7_G 0x0040 + +//Mask for blending out and setting 7 segments digits +#define MASK_7S_ALL = (S7_A | S7_B | S7_C | S7_D | S7_E | S7_F | S7_G} + +//Icons Grid 1 +#define S7_DP1 0x0080 +#define S7_LD1 0x0100 +#define S7_ICON_GR1 (S7_LD1 | S7_DP1) + +//Icons Grid 2 +#define S7_DP2 0x0080 +#define S7_LD2 0x0100 +#define S7_ICON_GR2 (S7_LD2 | S7_DP2) + +//Icons Grid 3 +#define S7_DP3 0x0080 +#define S7_LD3 0x0100 +#define S7_ICON_GR3 (S7_LD3 | S7_DP3) + +//Icons Grid 4 +#define S7_DP4 0x0080 +#define S7_LD4 0x0100 +#define S7_ICON_GR4 (S7_LD4 | S7_DP4) + +//Icons Grid 5 +#define S7_DP5 0x0080 +#define S7_LD5 0x0100 +#define S7_ICON_GR5 (S7_LD5 | S7_DP5) + +//Icons Grid 6 +#define S7_DP6 0x0080 +#define S7_LD6 0x0100 +#define S7_ICON_GR6 (S7_LD6 | S7_DP6) + +//Icons Grid 7 +#define S7_DP7 0x0080 +#define S7_LD7 0x0100 +#define S7_ICON_GR7 (S7_LD7 | S7_DP7) + +//Icons Grid 8 +#define S7_DP8 0x0080 +#define S7_LD8 0x0100 +#define S7_ICON_GR8 (S7_LD8 | S7_DP8) + +//Icons Grid 9 +#define S7_DP9 0x0080 +#define S7_LD9 0x0100 +#define S7_ICON_GR9 (S7_LD9 | S7_DP9) + +//Icons Grid 10 +#define S7_DP10 0x0080 +#define S7_LD10 0x0100 +#define S7_ICON_GR10 (S7_LD10 | S7_DP10) + +//Mask for blending out and restoring Icons +extern const char MASK_ICON_GRID[][2]; +#endif + + +// ASCII Font definitions for segments in each character +// +//32 0x20 Symbols +#define C7_SPC () + +//48 0x30 Digits +#define C7_0 (S7_A | S7_B | S7_C | S7_D | S7_E | S7_F) +#define C7_1 (S7_B | S7_C) +#define C7_2 (S7_A | S7_B | S7_D | S7_E | S7_G) +#define C7_3 (S7_A | S7_B | S7_C | S7_D | S7_G) +#define C7_4 (S7_B | S7_C | S7_F | S7_G) +#define C7_5 (S7_A | S7_C | S7_D | S7_F | S7_G) +#define C7_6 (S7_A | S7_C | S7_D | S7_E | S7_F | S7_G) +#define C7_7 (S7_A | S7_B | S7_C) +#define C7_8 (S7_A | S7_B | S7_C | S7_D | S7_E | S7_F | S7_G) +#define C7_9 (S7_A | S7_B | S7_C | S7_D | S7_F | S7_G) +//64 0x40 Upper case alphabet +#define C7_A (S7_A | S7_B | S7_C | S7_E | S7_F | S7_G ) +#define C7_B (S7_C | S7_D | S7_E | S7_F | S7_G) +#define C7_C (S7_A | S7_D | S7_E | S7_F) +#define C7_D (S7_B | S7_C | S7_D | S7_E | S7_G) +#define C7_E (S7_A | S7_D | S7_E | S7_F | S7_G) +#define C7_F (S7_A | S7_E | S7_F | S7_G) + +#define C7_G (S7_A | S7_B | S7_C | S7_F | S7_G) +#define C7_H (S7_B | S7_C | S7_E | S7_F | S7_G) +#define C7_I (S7_B | S7_C) +#define C7_J (S7_B | S7_C | S7_D) +#define C7_L (S7_D | S7_E | S7_F) +#define C7_M (S7_C | S7_E | S7_G) +#define C7_N (S7_C | S7_E | S7_G) +#define C7_O (S7_A | S7_B | S7_C | S7_D | S7_E | S7_F) +#define C7_P (S7_A | S7_B | S7_E | S7_F | S7_G) +#define C7_Q (S7_A | S7_B | S7_C | S7_F | S7_G) +#define C7_R (S7_E | S7_G) +#define C7_S (S7_A | S7_C | S7_D | S7_F | S7_G) +#define C7_T (S7_D | S7_E | S7_F | S7_G) +#define C7_U (S7_B | S7_C | S7_D | S7_E | S7_F) +#define C7_Y (S7_B | S7_C | S7_D | S7_F | S7_G) +#define C7_Z (S7_A | S7_B | S7_D | S7_E | S7_G) + +//97 0x61 Lower case alphabet +#define C7_a C7_A +#define C7_b C7_B +#define C7_c C7_C +#define C7_d C7_D +#define C7_e C7_E +#define C7_f C7_H + +#define C7_g C7_G +#define C7_h C7_H +#define C7_i C7_I +#define C7_j C7_J +#define C7_l C7_L +#define C7_m C7_M +#define C7_n C7_N +#define C7_o C7_O +#define C7_p C7_P +#define C7_q C7_Q +#define C7_r C7_R +#define C7_s C7_S +#define C7_t C7_T +#define C7_u C7_U +#define C7_y C7_Y +#define C7_z C7_Z + + +//User Defined Characters (some examples) + +// Font data selection for transmission to TM1638 memory +#define LO(x) ( x & 0xFF) +#define HI(x) ((x >> 8) & 0xFF) + + +// ASCII Font definition table +// +//#define FONT_7S_START 0x20 +//#define FONT_7S_END 0x7F +//#define FONT_7S_NR_CHARS (FONT_7S_END - FONT_7S_START + 1) +extern const char FONT_7S[]; + +#endif \ No newline at end of file
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/TM1638.cpp Mon Dec 21 22:39:22 2015 +0000
@@ -0,0 +1,503 @@
+/* mbed TM1638 Library, for TM1638 LED controller
+ * Copyright (c) 2015, v01: WH, Initial version
+ *
+ * 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.
+ */
+#include "mbed.h"
+#include "TM1638.h"
+
+/** Constructor for class for driving TM1638 LED controller with SPI bus interface device.
+ * @brief Supports 8 digits @ 10 segments.
+ * Also supports a scanned keyboard of upto 24 keys.
+ *
+ * @param PinName mosi, miso, sclk, cs SPI bus pins
+*/
+TM1638::TM1638(PinName mosi, PinName miso, PinName sclk, PinName cs) : _spi(mosi,miso,sclk), _cs(cs) {
+
+ _init();
+}
+
+/** Init the SPI interface and the controller
+ * @param none
+ * @return none
+ */
+void TM1638::_init(){
+
+//init SPI
+ _cs=1;
+ _spi.format(8,3); //TM1638 uses mode 3 (Clock High on Idle, Data latched on second (=rising) edge)
+ _spi.frequency(500000);
+
+//init controller
+ _display = TM1638_DSP_ON;
+ _bright = TM1638_BRT_DEF;
+ _writeCmd(TM1638_DSP_CTRL_CMD, _display | _bright ); // Display control cmd, display on/off, brightness
+
+ _writeCmd(TM1638_DATA_SET_CMD, TM1638_DATA_WR | TM1638_ADDR_INC | TM1638_MODE_NORM); // Data set cmd, normal mode, auto incr, write data
+}
+
+
+/** Clear the screen and locate to 0
+ */
+void TM1638::cls() {
+
+ _cs=0;
+ wait_us(1);
+ _spi.write(_flip(TM1638_ADDR_SET_CMD | 0x00)); // Address set cmd, 0
+
+ for (int cnt=0; cnt<TM1638_DISPLAY_MEM; cnt++) {
+ _spi.write(0x00); // data
+ }
+
+ wait_us(1);
+ _cs=1;
+}
+
+/** Set Brightness
+ *
+ * @param char brightness (3 significant bits, valid range 0..7 (1/16 .. 14/14 dutycycle)
+ * @return none
+ */
+void TM1638::setBrightness(char brightness){
+
+ _bright = brightness & TM1638_BRT_MSK; // mask invalid bits
+
+ _writeCmd(TM1638_DSP_CTRL_CMD, _display | _bright ); // Display control cmd, display on/off, brightness
+}
+
+/** Set the Display mode On/off
+ *
+ * @param bool display mode
+ */
+void TM1638::setDisplay(bool on) {
+
+ if (on) {
+ _display = TM1638_DSP_ON;
+ }
+ else {
+ _display = TM1638_DSP_OFF;
+ }
+
+ _writeCmd(TM1638_DSP_CTRL_CMD, _display | _bright ); // Display control cmd, display on/off, brightness
+}
+
+/** Write databyte to TM1638
+ * @param int address display memory location to write byte
+ * @param char data byte written at given address
+ * @return none
+ */
+void TM1638::writeData(int address, char data) {
+ _cs=0;
+ wait_us(1);
+ _spi.write(_flip(TM1638_ADDR_SET_CMD | (address & TM1638_ADDR_MSK))); // Set Address cmd
+
+ _spi.write(_flip(data)); // data
+
+ wait_us(1);
+ _cs=1;
+}
+
+/** Write Display datablock to TM1638
+ * @param DisplayData_t data Array of TM1638_DISPLAY_MEM (=16) bytes for displaydata (starting at address 0)
+ * @param length number bytes to write (valide range 0..TM1638_DISPLAY_MEM (=16), starting at address 0)
+ * @return none
+ */
+void TM1638::writeData(DisplayData_t data, int length) {
+ _cs=0;
+ wait_us(1);
+ _spi.write(_flip(TM1638_ADDR_SET_CMD | 0x00)); // Set Address at 0
+
+// sanity check
+ if (length < 0) {length = 0;}
+ if (length > TM1638_DISPLAY_MEM) {length = TM1638_DISPLAY_MEM;}
+
+// for (int idx=0; idx<TM1638_DISPLAY_MEM; idx++) {
+ for (int idx=0; idx<length; idx++) {
+ _spi.write(_flip(data[idx])); // data
+ }
+
+ wait_us(1);
+ _cs=1;
+}
+
+
+/** Read keydata block from TM1638
+ * @param *keydata Ptr to Array of TM1638_KEY_MEM (=4) bytes for keydata
+ * @return bool keypress True when at least one key was pressed
+ *
+ * Note: Due to the hardware configuration the TM1638 key matrix scanner will detect multiple keys pressed at same time,
+ * but this may also result in some spurious keys 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 TM1638::getKeys(KeyData_t *keydata) {
+ int keypress = 0;
+ char data;
+
+ // Read keys
+ _cs=0;
+ wait_us(1);
+
+ // Enable Key Read mode
+ _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
+
+ for (int idx=0; idx < TM1638_KEY_MEM; idx++) {
+ data = _flip(_spi.write(0xFF)); // read keys and correct bitorder
+
+ if (data != 0) { // Check for any pressed key
+ for (int bit=0; bit < TM1638_KEY_BITS; bit++) {
+ if (data & (1 << bit)) {keypress++;} // Test all significant bits
+ }
+ }
+
+ (*keydata)[idx] = data; // Store keydata after correcting bitorder
+ }
+
+ wait_us(1);
+ _cs=1;
+
+ // Restore Data Write mode
+ _writeCmd(TM1638_DATA_SET_CMD, TM1638_DATA_WR | TM1638_ADDR_INC | TM1638_MODE_NORM); // Data set cmd, normal mode, auto incr, write data
+
+#if(1)
+// Dismiss multiple keypresses at same time
+ return (keypress == 1);
+#else
+// Allow multiple keypress and accept possible spurious keys
+ return (keypress > 0);
+#endif
+}
+
+
+/** Helper to reverse all command or databits. The TM1638 expects LSB first, whereas SPI is MSB first
+ * @param char data
+ * @return bitreversed data
+ */
+char TM1638::_flip(char data) {
+ char value=0;
+
+ if (data & 0x01) {value |= 0x80;} ;
+ if (data & 0x02) {value |= 0x40;} ;
+ if (data & 0x04) {value |= 0x20;} ;
+ if (data & 0x08) {value |= 0x10;} ;
+ if (data & 0x10) {value |= 0x08;} ;
+ if (data & 0x20) {value |= 0x04;} ;
+ if (data & 0x40) {value |= 0x02;} ;
+ if (data & 0x80) {value |= 0x01;} ;
+ return value;
+}
+
+
+/** Write command and parameter to TM1638
+ * @param int cmd Command byte
+ * &Param int data Parameters for command
+ * @return none
+ */
+void TM1638::_writeCmd(int cmd, int data){
+
+ _cs=0;
+ wait_us(1);
+// _spi.write(_flip( (cmd & 0xF0) | (data & 0x0F)));
+ _spi.write(_flip( (cmd & TM1638_CMD_MSK) | (data & ~TM1638_CMD_MSK)));
+
+ wait_us(1);
+ _cs=1;
+}
+
+
+#if (LEDKEY8_TEST == 1)
+// Derived class for TM1638 used in LED&KEY display unit
+//
+
+/** Constructor for class for driving TM1638 LED controller as used in LEDKEY8
+ *
+ * @brief Supports 8 Digits of 7 Segments + DP + LED Icons. Also supports a scanned keyboard of 8.
+ *
+ * @param PinName mosi, miso, sclk, cs SPI bus pins
+ */
+TM1638_LEDKEY8::TM1638_LEDKEY8(PinName mosi, PinName miso, PinName sclk, PinName cs) : TM1638(mosi, miso, sclk, cs) {
+ _column = 0;
+ _columns = LEDKEY8_NR_DIGITS;
+}
+
+#if(0)
+#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
+#endif
+
+/** Locate cursor to a screen column
+ *
+ * @param column The horizontal position from the left, indexed from 0
+ */
+void TM1638_LEDKEY8::locate(int column) {
+ //sanity check
+ if (column < 0) {column = 0;}
+ if (column > (_columns - 1)) {column = _columns - 1;}
+
+ _column = column;
+}
+
+
+/** Number of screen columns
+ *
+ * @param none
+ * @return columns
+ */
+int TM1638_LEDKEY8::columns() {
+ return _columns;
+}
+
+
+/** Clear the screen and locate to 0
+ * @param bool clrAll Clear Icons also (default = false)
+ */
+void TM1638_LEDKEY8::cls(bool clrAll) {
+
+ if (clrAll) {
+ //clear local buffer (including Icons)
+ for (int idx=0; idx < (LEDKEY8_NR_GRIDS << 1); idx++) {
+ _displaybuffer[idx] = 0x00;
+ }
+ }
+ else {
+ //clear local buffer (preserving Icons)
+ for (int idx=0; idx < LEDKEY8_NR_GRIDS; idx++) {
+ _displaybuffer[(idx<<1)] = _displaybuffer[(idx<<1)] & MASK_ICON_GRID[idx][0];
+ _displaybuffer[(idx<<1) + 1] = _displaybuffer[(idx<<1) + 1] & MASK_ICON_GRID[idx][1];
+ }
+ }
+
+ writeData(_displaybuffer, (LEDKEY8_NR_GRIDS*2));
+
+ _column = 0;
+}
+
+/** Set Icon
+ *
+ * @param Icon icon Enums Icon has Grid position encoded in 8 MSBs, Icon pattern encoded in 24 LSBs
+ * @return none
+ */
+void TM1638_LEDKEY8::setIcon(Icon icon) {
+ int addr, icn;
+
+ icn = icon & 0xFFFFFF;
+ addr = (icon >> 24) & 0xFF;
+ addr = (addr - 1) << 1;
+
+ //Save char...and set bits for icon to write
+ _displaybuffer[addr] = _displaybuffer[addr] | LO(icn);
+ _displaybuffer[addr+1] = _displaybuffer[addr+1] | HI(icn);
+ writeData(_displaybuffer, (LEDKEY8_NR_GRIDS*2));
+}
+
+/** Clr Icon
+ *
+ * @param Icon icon Enums Icon has Grid position encoded in 8 MSBs, Icon pattern encoded in 24 LSBs
+ * @return none
+ */
+void TM1638_LEDKEY8::clrIcon(Icon icon) {
+ int addr, icn;
+
+ icn = icon & 0xFFFFFF;
+ addr = (icon >> 24) & 0xFF;
+ addr = (addr - 1) << 1;
+
+ //Save char...and clr bits for icon to write
+ _displaybuffer[addr] = _displaybuffer[addr] & ~LO(icn);
+ _displaybuffer[addr+1] = _displaybuffer[addr+1] & ~HI(icn);
+ writeData(_displaybuffer, (LEDKEY8_NR_GRIDS*2));
+}
+
+
+/** 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 (8 bits)
+ */
+void TM1638_LEDKEY8::setUDC(unsigned char udc_idx, int udc_data) {
+
+ //Sanity check
+ if (udc_idx > (LEDKEY8_NR_UDC-1)) {
+ return;
+ }
+ // Mask out Icon bits?
+
+ _UDC_7S[udc_idx] = LO(udc_data);
+}
+
+
+#if(1)
+/** Write a single character (Stream implementation)
+ */
+int TM1638_LEDKEY8::_putc(int value) {
+ int addr;
+ bool validChar = false;
+ char pattern = 0x00;
+
+ if ((value == '\n') || (value == '\r')) {
+ //No character to write
+ validChar = false;
+
+ //Update Cursor
+ _column = 0;
+ }
+ else if ((value >= 0) && (value < LEDKEY8_NR_UDC)) {
+ //Character to write
+ validChar = true;
+ pattern = _UDC_7S[value];
+ }
+ else if ((value >= (int)'0') && (value <= (int) '9')) {
+ //Character to write
+ validChar = true;
+ pattern = FONT_7S[value - (int) '0'];
+ }
+ else if ((value >= (int) 'A') && (value <= (int) 'F')) {
+ //Character to write
+ validChar = true;
+ pattern = FONT_7S[10 + value - (int) 'A'];
+ }
+ else if ((value >= (int) 'a') && (value <= (int) 'f')) {
+ //Character to write
+ validChar = true;
+ pattern = FONT_7S[10 + value - (int) 'a'];
+ } //else
+
+ if (validChar) {
+ //Character to write
+
+ //Translate between _column and displaybuffer entries
+ addr = _column << 1;
+
+ //Save icons...and set bits for character to write
+ _displaybuffer[addr] = (_displaybuffer[addr] & MASK_ICON_GRID[_column][0]) | pattern;
+// _displaybuffer[addr+1] = (_displaybuffer[addr+1] & MASK_ICON_GRID[_column][0]) | pattern;
+
+ writeData(_displaybuffer, (LEDKEY8_NR_GRIDS*2));
+
+ //Update Cursor
+ _column++;
+ if (_column > (LEDKEY8_NR_DIGITS - 1)) {
+ _column = 0;
+ }
+
+ } // if validChar
+
+ return value;
+}
+
+#else
+
+/** Write a single character (Stream implementation)
+ */
+int TM1638_LEDKEY8::_putc(int value) {
+ int addr;
+
+ if ((value == '\n') || (value == '\r')) {
+ //No character to write
+
+ //Update Cursor
+ _column = 0;
+ }
+ else if ((value >= 0) && (value < LEDKEY8_NR_UDC)) {
+ //Character to write
+ addr = (LEDKEY8_DIG1_IDX + ((LEDKEY8_NR_DIGITS - 1) - _column)) << 1;
+
+ //Save icons...and set bits for character to write
+// _displaybuffer[addr] = (_displaybuffer[addr] & LO(S_ICON_MSK)) | _UDC_16S[value][0];
+// _displaybuffer[addr+1] = (_displaybuffer[addr+1] & HI(S_ICON_MSK)) | _UDC_16S[value][1];
+ writeData(_displaybuffer, (LEDKEY8_NR_GRIDS*2));
+
+ //Update Cursor
+ _column++;
+ if (_column > (LEDKEY8_NR_DIGITS - 1)) {
+ _column = 0;
+ }
+ }
+ else if ((value >= (int)'0') && (value <= (int) '9')) {
+ //Character to write
+ value = value - (int) '0';
+ addr = (LEDKEY8_DIG1_IDX + ((LEDKEY8_NR_DIGITS - 1) - _column)) << 1;
+
+ //Save icons...and set bits for character to write
+// _displaybuffer[addr] = (_displaybuffer[addr] & LO(S_ICON_MSK)) | FONT_7S[value][0];
+// _displaybuffer[addr+1] = (_displaybuffer[addr+1] & HI(S_ICON_MSK)) | FONT_7S[value][1];
+ writeData(_displaybuffer, (LEDKEY8_NR_GRIDS*2));
+
+ //Update Cursor
+ _column++;
+ if (_column > (LEDKEY8_NR_DIGITS - 1)) {
+ _column = 0;
+ }
+ }
+ else if ((value >= (int) 'A') && (value <= (int) 'F')) {
+ //Character to write
+ value = 10 + value - (int) 'A';
+ addr = (LEDKEY8_DIG1_IDX + ((LEDKEY8_NR_DIGITS - 1) - _column)) << 1;
+
+ //Save icons...and set bits for character to write
+// _displaybuffer[addr] = (_displaybuffer[addr] & LO(S_ICON_MSK)) | FONT_7S[value][0];
+// _displaybuffer[addr+1] = (_displaybuffer[addr+1] & HI(S_ICON_MSK)) | FONT_7S[value][1];
+ writeData(_displaybuffer, (LEDKEY8_NR_GRIDS*2));
+
+ //Update Cursor
+ _column++;
+ if (_column > (LEDKEY8_NR_DIGITS - 1)) {
+ _column = 0;
+ }
+ }
+ else if ((value >= (int) 'a') && (value <= (int) 'f')) {
+ //Character to write
+ value = 10 + value - (int) 'a';
+ addr = (LEDKEY8_DIG1_IDX + ((LEDKEY8_NR_DIGITS - 1) - _column)) << 1;
+
+ //Save icons...and set bits for character to write
+// _displaybuffer[addr] = (_displaybuffer[addr] & LO(S_ICON_MSK)) | FONT_7S[value][0];
+// _displaybuffer[addr+1] = (_displaybuffer[addr+1] & HI(S_ICON_MSK)) | FONT_7S[value][1];
+ writeData(_displaybuffer, (LEDKEY8_NR_GRIDS*2));
+
+ //Update Cursor
+ _column++;
+ if (_column > (LEDKEY8_NR_DIGITS - 1)) {
+ _column = 0;
+ }
+
+ } //else
+
+ return value;
+}
+#endif
+
+
+// get a single character (Stream implementation)
+int TM1638_LEDKEY8::_getc() {
+ return -1;
+}
+
+#endif
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/TM1638.h Mon Dec 21 22:39:22 2015 +0000
@@ -0,0 +1,337 @@
+/* mbed TM1638 Library, for TM1638 LED controller
+ * Copyright (c) 2015, v01: WH, Initial version
+ *
+ * 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 TM1638_H
+#define TM1638_H
+
+// Select one of the testboards for TM1638 LED controller
+#include "TM1638_Config.h"
+
+/** An interface for driving TM1638 LED controller
+ *
+ * @code
+ * #include "mbed.h"
+ * #include "TM1638.h"
+ *
+ * DisplayData_t size is 16 bytes (8 grids @ 10 segments)
+ * TM1638::DisplayData_t all_str = {0xFF,0x3F, 0xFF,0x3F, 0xFF,0x3F, 0xFF,0x3F, 0xFF,0x3F, 0xFF,0x3F, 0xFF,0x3F, 0xFF,0x3F};
+ *
+ * // KeyData_t size is 5 bytes
+ * TM1638::KeyData_t keydata;
+ *
+ * // TM1638 declaration
+ * TM1638 TM1638(p5,p6,p7, p8);
+ *
+ * int main() {
+ * TM1638.cls();
+ * TM1638.writeData(all_str);
+ * wait(1);
+ * TM1638.setBrightness(TM1638_BRT0);
+ * wait(1);
+ * TM1638.setBrightness(TM1638_BRT3);
+ *
+ * while (1) {
+ * // Check and read keydata
+ * if (TM1638.getKeys(&keydata)) {
+ * pc.printf("Keydata 0..3 = 0x%02x 0x%02x 0x%02x 0x%02x\r\n", keydata[0], keydata[1], keydata[2], keydata[3]);
+ *
+ * if (keydata[0] == 0x10) { //sw2
+ * TM1638.cls();
+ * TM1638.writeData(all_str);
+ * }
+ * }
+ * }
+ * }
+ * @endcode
+ */
+
+//Memory size in bytes for Display and Keymatrix
+#define TM1638_DISPLAY_MEM 16
+#define TM1638_KEY_MEM 4
+//Significant bits Keymatrix data
+#define TM1638_KEY_BITS 6
+
+//Reserved bits for commands
+#define TM1638_CMD_MSK 0xC0
+
+//Data setting commands
+#define TM1638_DATA_SET_CMD 0x40
+#define TM1638_DATA_WR 0x00
+#define TM1638_KEY_RD 0x02
+#define TM1638_ADDR_INC 0x00
+#define TM1638_ADDR_FIXED 0x04
+#define TM1638_MODE_NORM 0x00
+#define TM1638_MODE_TEST 0x08
+
+//Address setting commands
+#define TM1638_ADDR_SET_CMD 0xC0
+#define TM1638_ADDR_MSK 0x0F
+
+//Display control commands
+#define TM1638_DSP_CTRL_CMD 0x80
+#define TM1638_BRT_MSK 0x07
+#define TM1638_BRT0 0x00 //Pulsewidth 1/16
+#define TM1638_BRT1 0x01
+#define TM1638_BRT2 0x02
+#define TM1638_BRT3 0x03
+#define TM1638_BRT4 0x04
+#define TM1638_BRT5 0x05
+#define TM1638_BRT6 0x06
+#define TM1638_BRT7 0x07 //Pulsewidth 14/16
+
+#define TM1638_BRT_DEF TM1638_BRT3
+
+#define TM1638_DSP_OFF 0x00
+#define TM1638_DSP_ON 0x08
+
+
+/** A class for driving TM1638 LED controller
+ *
+ * @brief Supports 8 Grids @ 10 Segments.
+ * Also supports a scanned keyboard of upto 24 keys.
+ * SPI bus interface device.
+ */
+class TM1638 {
+ public:
+
+ /** Datatypes for display and keymatrix data */
+ typedef char DisplayData_t[TM1638_DISPLAY_MEM];
+ typedef char KeyData_t[TM1638_KEY_MEM];
+
+ /** Constructor for class for driving TM1638 LED controller
+ *
+ * @brief Supports 8 Grids @ 10 segments.
+ * Also supports a scanned keyboard of upto 24 keys.
+ * SPI bus interface device.
+ *
+ * @param PinName mosi, miso, sclk, cs SPI bus pins
+ */
+ TM1638(PinName mosi, PinName miso, PinName sclk, PinName cs);
+
+ /** Clear the screen and locate to 0
+ */
+ void cls();
+
+ /** Write databyte to TM1638
+ * @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 TM1638
+ * @param DisplayData_t data Array of TM1638_DISPLAY_MEM (=16) bytes for displaydata (starting at address 0)
+ * @param length number bytes to write (valid range 0..TM1638_DISPLAY_MEM (=16), starting at address 0)
+ * @return none
+ */
+ void writeData(DisplayData_t data, int length = TM1638_DISPLAY_MEM);
+
+ /** Read keydata block from TM1638
+ * @param *keydata Ptr to Array of TM1638_KEY_MEM (=4) bytes for keydata
+ * @return bool keypress True when at least one key was pressed
+ *
+ * Note: Due to the hardware configuration the TM1638 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 = TM1638_BRT_DEF);
+
+ /** Set the Display mode On/off
+ *
+ * @param bool display mode
+ */
+ void setDisplay(bool on);
+
+ private:
+ SPI _spi;
+ DigitalOut _cs;
+ 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 TM1638 expects LSB first, whereas SPI is MSB first
+ * @param char data
+ * @return bitreversed data
+ */
+ char _flip(char data);
+
+ /** Write command and parameter to TM1638
+ * @param int cmd Command byte
+ * &Param int data Parameters for command
+ * @return none
+ */
+ void _writeCmd(int cmd, int data);
+};
+
+
+#if (LEDKEY8_TEST == 1)
+// Derived class for TM1638 used in LED&KEY display unit
+//
+
+#include "Font_7Seg.h"
+
+#define LEDKEY8_NR_GRIDS 8
+#define LEDKEY8_NR_DIGITS 8
+#define LEDKEY8_DIG1_IDX 1
+#define LEDKEY8_NR_UDC 8
+
+/** Constructor for class for driving TM1638 controller as used in LEDKEY8
+ *
+ * @brief Supports 8 Digits of 7 Segments + DP + LED Icons, Also supports a scanned keyboard of 8 keys.
+ *
+ * @param PinName mosi, miso, sclk, cs SPI bus pins
+ */
+class TM1638_LEDKEY8 : public TM1638, public Stream {
+ public:
+
+ /** Enums for Icons */
+ // Grid encoded in 8 MSBs, Icon pattern encoded in 24 LSBs
+ enum Icon {
+ LD1 = (1<<24) | S7_LD1,
+ LD2 = (2<<24) | S7_LD2,
+ LD3 = (3<<24) | S7_LD3,
+ LD4 = (4<<24) | S7_LD4,
+ LD5 = (5<<24) | S7_LD5,
+ LD6 = (6<<24) | S7_LD6,
+ LD7 = (7<<24) | S7_LD7,
+ LD8 = (8<<24) | S7_LD8,
+
+ DP1 = (1<<24) | S7_DP1,
+ DP2 = (2<<24) | S7_DP2,
+ DP3 = (3<<24) | S7_DP3,
+ DP4 = (4<<24) | S7_DP4,
+ DP5 = (5<<24) | S7_DP5,
+ DP6 = (6<<24) | S7_DP6,
+ DP7 = (7<<24) | S7_DP7,
+ DP8 = (8<<24) | S7_DP8
+ };
+
+ typedef char UDCData_t[LEDKEY8_NR_UDC];
+
+ /** Constructor for class for driving TM1638 LED controller as used in LEDKEY8
+ *
+ * @brief Supports 8 Digits of 7 Segments + DP + LED Icons. Also supports a scanned keyboard of 8 keys.
+ *
+ * @param PinName mosi, miso, sclk, cs SPI bus pins
+ */
+ TM1638_LEDKEY8(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 24 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 24 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 databyte to TM1638
+ * @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){
+ TM1638::writeData(address, data);
+ }
+
+ /** Write Display datablock to TM1638
+ * @param DisplayData_t data Array of TM1638_DISPLAY_MEM (=16) bytes for displaydata (starting at address 0)
+ * @param length number bytes to write (valid range 0..(LEDKEY8_NR_GRIDS*2) (=16), starting at address 0)
+ * @return none
+ */
+ void writeData(DisplayData_t data, int length = (LEDKEY8_NR_GRIDS*2)) {
+ TM1638::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
+
+#endif
\ No newline at end of file
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/TM1638_Config.h Mon Dec 21 22:39:22 2015 +0000 @@ -0,0 +1,30 @@ +/* mbed TM1638 Library, for TM1638 LEDcontroller + * Copyright (c) 2015, v01: WH, Initial version + * + * 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 TM1638_CONFIG_H +#define TM1638_CONFIG_H + +// Select one of the testboards for TM1638 LED controller +#define TM1638_TEST 0 +#define LEDKEY8_TEST 1 + +#endif \ No newline at end of file
TM1638 LED controller (80 LEDs max), Keyboard scan (24 keys max)