Diff: TM1640.h

Revision:

0:7e120ffa56d3

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/TM1640.h	Thu Jan 28 19:25:49 2016 +0000
@@ -0,0 +1,334 @@
+/* mbed TM1640 Library, for TM1640 LED controller
+ * Copyright (c) 2016, 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, inclumosig 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, INCLUmosiG 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 TM1640_H
+#define TM1640_H
+
+// Select one of the testboards for TM1640 LED controller
+#include "TM1640_Config.h"
+
+/** An interface for driving TM1640 LED controller
+ *
+ * @code
+ * #include "mbed.h"
+ * #include "TM1640.h" 
+ * 
+ * DisplayData_t size is 16 bytes (16 grids @ 8 segments)
+ * TM1640::DisplayData_t all_str  = {0xFF,0xFF, 0xFF,0xFF, 0xFF,0xFF, 0xFF,0xFF, 0xFF,0xFF, 0xFF,0xFF, 0xFF,0xFF, 0xFF,0xFF};  
+ *
+  * // TM1640 declaration
+ * TM1640 TM1640(p5,p7);
+ *
+ * int main() {
+ *   TM1640.cls(); 
+ *   TM1640.writeData(all_str);
+ *   wait(1);
+ *   TM1640.setBrightness(TM1640_BRT0);
+ *   wait(1);
+ *   TM1640.setBrightness(TM1640_BRT3);
+ *
+ *   while (1) {
+ *     TM1640.cls(); 
+ *     wait(0.5); 
+ *     TM1640.writeData(all_str);
+ *     wait(0.5); 
+ *   }  
+ * }
+ * @endcode
+ */
+
+
+//TM1640 Display data
+#define TM1640_MAX_NR_GRIDS   16
+#define TM1640_BYTES_PER_GRID  1
+
+//Memory size in bytes for Display
+#define TM1640_DISPLAY_MEM  (TM1640_MAX_NR_GRIDS * TM1640_BYTES_PER_GRID)
+
+//Reserved bits for commands
+#define TM1640_CMD_MSK      0xC0
+
+//Data setting commands
+#define TM1640_DATA_SET_CMD 0x40
+#define TM1640_DATA_WR      0x00
+#define TM1640_ADDR_INC     0x00
+#define TM1640_ADDR_FIXED   0x04
+#define TM1640_MODE_NORM    0x00
+#define TM1640_MODE_TEST    0x08
+
+//Address setting commands
+#define TM1640_ADDR_SET_CMD 0xC0
+#define TM1640_ADDR_MSK     0x0F
+
+//Display control commands
+#define TM1640_DSP_CTRL_CMD 0x80
+#define TM1640_BRT_MSK      0x07
+#define TM1640_BRT0         0x00 //Pulsewidth 1/16
+#define TM1640_BRT1         0x01
+#define TM1640_BRT2         0x02
+#define TM1640_BRT3         0x03
+#define TM1640_BRT4         0x04
+#define TM1640_BRT5         0x05
+#define TM1640_BRT6         0x06
+#define TM1640_BRT7         0x07 //Pulsewidth 14/16
+
+#define TM1640_BRT_DEF      TM1640_BRT3
+
+#define TM1640_DSP_OFF      0x00
+#define TM1640_DSP_ON       0x08
+
+
+/** A class for driving TM1640 LED controller
+ *
+ * @brief Supports 16 Grids @ 8 Segments. 
+ *        Serial bus interface device. 
+ */
+class TM1640 {
+ public:
+
+  /** Datatype for displaydata */
+  typedef char DisplayData_t[TM1640_DISPLAY_MEM];
+    
+ /** Constructor for class for driving TM1640 LED controller
+  *
+  * @brief Supports 16 Grids @ 8 segments. 
+  *        Serial bus interface device. 
+  *
+  *  @param  PinName mosi Serial bus MOSI pin
+  *  @param  PinName sclk Serial bus SCLK pin  
+  */
+  TM1640(PinName mosi, PinName sclk);
+      
+  /** Clear the screen and locate to 0
+   */ 
+  void cls();  
+
+  /** Write databyte to TM1640
+   *  @param  char data byte written at given address
+   *  @param  int address display memory location to write byte
+   *  @return none
+   */ 
+   void writeData(char data, int address); 
+
+   /** Write Display datablock to TM1640
+    *  @param  DisplayData_t data Array of TM1640_DISPLAY_MEM (=16) bytes for displaydata
+    *  @param  length number bytes to write (valid range 0..(TM1640_MAX_NR_GRIDS * TM1640_BYTES_PER_GRID) (=16), when starting at address 0)  
+    *  @param  int address display memory location to write bytes (default = 0) 
+    *  @return none
+    */ 
+    void writeData(DisplayData_t data, int length = (TM1640_MAX_NR_GRIDS * TM1640_BYTES_PER_GRID), int address = 0);
+ 
+  /** Set Brightness
+    *
+    * @param  char brightness (3 significant bits, valid range 0..7 (1/16 .. 14/14 dutycycle)  
+    * @return none
+    */
+  void setBrightness(char brightness = TM1640_BRT_DEF);
+  
+  /** Set the Display mode On/off
+    *
+    * @param bool display mode
+    */
+  void setDisplay(bool on);
+  
+  private:  
+    DigitalOut _mosi;
+    DigitalOut _sclk;  
+    char _display;
+    char _bright; 
+  
+  /** Init the SPI interface and the controller
+    * @param  none
+    * @return none
+    */ 
+    void _init();
+
+
+  /** Generate Start condition for TM1640
+    *  @param  none
+    *  @return none
+    */ 
+    void _start();
+  
+  /** Generate Stop condition for TM1640
+    *  @param  none
+    *  @return none
+    */ 
+    void _stop();
+
+  /** Send byte to TM1640
+    *  @param  int data
+    *  @return none
+    */ 
+    void _write(int data);
+
+  /** Write command and parameter to TM1640
+    *  @param  int cmd Command byte
+    *  &Param  int data Parameters for command
+    *  @return none
+    */ 
+    void _writeCmd(int cmd, int data);  
+};
+
+
+#if (LM1640_TEST == 1) 
+// Derived class for TM1640 used in LM1640 display unit
+//
+
+#include "Font_7Seg.h"
+
+#define LM1640_NR_GRIDS  16
+#define LM1640_NR_DIGITS 16
+#define LM1640_NR_UDC    8
+
+/** Constructor for class for driving TM1640 controller as used in LM1640
+  *
+  *  @brief Supports 16 Digits of 7 Segments + DP.
+  *  
+  *  @param  PinName mosi Serial bus MOSI pin
+  *  @param  PinName sclk Serial bus SCLK pin 
+  */
+class TM1640_LM1640 : public TM1640, public Stream {
+ public:
+
+  /** Enums for Icons */
+  //  Grid encoded in 8 MSBs, Icon pattern encoded in 16 LSBs
+  enum Icon {
+    DP1   = ( 1<<24) | S7_DP1,  /**<  Decimal Point 1 */
+    DP2   = ( 2<<24) | S7_DP2,  /**<  Decimal Point 2 */
+    DP3   = ( 3<<24) | S7_DP3,  /**<  Decimal Point 3 */
+    DP4   = ( 4<<24) | S7_DP4,  /**<  Decimal Point 4 */
+    DP5   = ( 5<<24) | S7_DP5,  /**<  Decimal Point 5 */
+    DP6   = ( 6<<24) | S7_DP6,  /**<  Decimal Point 6 */
+    DP7   = ( 7<<24) | S7_DP7,  /**<  Decimal Point 7 */
+    DP8   = ( 8<<24) | S7_DP8,  /**<  Decimal Point 8 */   
+    DP9   = ( 9<<24) | S7_DP9,  /**<  Decimal Point 9 */
+    DP10  = (10<<24) | S7_DP10, /**<  Decimal Point 10 */
+    DP11  = (11<<24) | S7_DP11, /**<  Decimal Point 11 */
+    DP12  = (12<<24) | S7_DP12, /**<  Decimal Point 12 */
+    DP13  = (13<<24) | S7_DP13, /**<  Decimal Point 13 */
+    DP14  = (14<<24) | S7_DP14, /**<  Decimal Point 14 */
+    DP15  = (15<<24) | S7_DP15, /**<  Decimal Point 15 */
+    DP16  = (16<<24) | S7_DP16  /**<  Decimal Point 16 */  
+
+  };
+  
+  typedef char UDCData_t[LM1640_NR_UDC];
+  
+ /** Constructor for class for driving TM1640 LED controller as used in LM1640
+   *
+   * @brief Supports 16 Digits of 7 Segments + DP.
+   *  
+   *  @param  PinName mosi Serial bus MOSI pin
+   *  @param  PinName sclk Serial bus SCLK pin   
+   */
+  TM1640_LM1640(PinName mosi, PinName sclk);
+
+#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 databyte to TM1640
+     *  @param  char data byte written at given address
+     *  @param  int address display memory location to write byte
+     *  @return none
+     */ 
+    void writeData(char data, int address){
+      TM1640::writeData(data, address);
+    }        
+
+   /** Write Display datablock to TM1640
+    *  @param  DisplayData_t data Array of TM1640_DISPLAY_MEM (=16) bytes for displaydata
+    *  @param  length number bytes to write (valid range 0..(LM1640_NR_GRIDS * TM1640_BYTES_PER_GRID) (=16), when starting at address 0)  
+    *  @param  int address display memory location to write bytes (default = 0) 
+    *  @return none
+    */   
+    void writeData(DisplayData_t data, int length = (LM1640_NR_GRIDS * TM1640_BYTES_PER_GRID), int address = 0) {
+      TM1640::writeData(data, length, address);
+    }  
+
+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
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