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