Diff: Protocols/Protocols.h

Revision:

0:e67bf8f398ee

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Protocols/Protocols.h	Sun Aug 23 15:50:19 2015 +0000
@@ -0,0 +1,148 @@
+ /* mbed UniGraphic library - Abstract protocol class
+ * Copyright (c) 2015 Giuliano Dianda
+ * Released under the MIT License: http://mbed.org/license/mit
+ */
+ 
+/** @file Protocols.h
+*/
+#ifndef Protocols_H
+#define Protocols_H
+
+#include "mbed.h"
+
+#define RGB24to16(r,g,b)  (((r&0xF8)<<8)|((g&0xFC)<<3)|((b&0xF8)>>3)) //5 red | 6 green | 5 blue
+#define BGR2RGB(color) (((color&0x1F)<<11) | (color&0x7E0) | ((color&0xF800)>>11))
+
+//#define USE_CS
+
+/** Protocol types
+*/
+enum proto_t {
+    PAR_8   /**< Parallel 8bit, port pins 0 to 7 */
+    ,PAR_16 /**< Parallel 16bit, port pins 0 to 15 */
+    ,BUS_8   /**< Parallel 8bit, scattered pins */
+    ,BUS_16   /**< Parallel 16bit, scattered pins */
+    ,SPI_8  /**< SPI 8bit */
+    ,SPI_16 /**< SPI 16bit */
+};
+
+
+/** Abstract interface class for spi and parallel protocols
+*/
+class Protocols
+{
+ public:
+    
+    /** Send 8bit command to display controller 
+    *
+    * @param cmd: byte to send  
+    *
+    */   
+    virtual void wr_cmd8(unsigned char cmd) = 0;
+    
+    /** Send 8bit data to display controller 
+    *
+    * @param data: byte to send   
+    *
+    */   
+    virtual void wr_data8(unsigned char data) = 0;
+    
+    /** Send 2x8bit command to display controller 
+    *
+    * @param cmd: halfword to send  
+    *
+    */   
+    virtual void wr_cmd16(unsigned short cmd) = 0;
+    
+    /** Send 2x8bit data to display controller 
+    *
+    * @param data: halfword to send   
+    *
+    */   
+    virtual void wr_data16(unsigned short data) = 0;
+    
+    /** Send 16bit pixeldata to display controller 
+    *
+    * @param data: halfword to send   
+    *
+    */   
+    virtual void wr_gram(unsigned short data) = 0;
+    
+    /** Send same 16bit pixeldata to display controller multiple times
+    *
+    * @param data: halfword to send
+    * @param count: how many
+    *
+    */   
+    virtual void wr_gram(unsigned short data, unsigned int count) = 0;
+    
+    /** Send array of pixeldata shorts to display controller
+    *
+    * @param data: unsigned short pixeldata array
+    * @param lenght: lenght (in shorts)
+    *
+    */   
+    virtual void wr_grambuf(unsigned short* data, unsigned int lenght) = 0;
+    
+    /** Read 16bit pixeldata from display controller (with dummy cycle)
+    *
+    * @param convert true/false. Convert 18bit to 16bit, some controllers returns 18bit
+    * @returns 16bit color
+    */ 
+    virtual unsigned short rd_gram(bool convert) = 0;
+    
+    /** Read 4x8bit register data (with dummy cycle)
+    * @param reg the register to read
+    * @returns data as uint
+    * 
+    */ 
+    virtual unsigned int rd_reg_data32(unsigned char reg) = 0;
+    
+    /** Read 3x8bit ExtendedCommands register data
+    * @param reg the register to read
+    * @param SPIreadenablecmd vendor/device specific cmd to read EXTC registers
+    * @returns data as uint
+    * @note EXTC regs (0xB0 to 0xFF) are read/write registers but needs special cmd to be read in SPI mode
+    */ 
+    virtual unsigned int rd_extcreg_data32(unsigned char reg, unsigned char SPIreadenablecmd) = 0;
+    
+    /** ILI932x specific, does a dummy read cycle, number of bits is protocol dependent
+    * for PAR protocols: a signle RD bit toggle
+    * for SPI8: 8clocks
+    * for SPI16: 16 clocks
+    */   
+    virtual void dummyread () = 0;
+    
+    /** ILI932x specific, select register for a successive write or read
+    *
+    * @param reg register to be selected
+    * @param forread false = a write next (default), true = a read next
+    * @note forread only used by SPI protocols
+    */   
+    virtual void reg_select(unsigned char reg, bool forread =false) = 0;
+    
+    /** ILI932x specific, write register with data
+    *
+    * @param reg register to write
+    * @param data 16bit data
+    */   
+    virtual void reg_write(unsigned char reg, unsigned short data) = 0;
+    
+    /** ILI932x specific, read register
+    *
+    * @param reg register to be read
+    * @returns 16bit register value
+    */ 
+    virtual unsigned short reg_read(unsigned char reg) = 0;
+    
+    /** HW reset sequence (without display init commands)   
+    */
+    virtual void hw_reset() = 0;
+    
+    /** Set ChipSelect high or low
+    * @param enable 0/1   
+    */
+    virtual void BusEnable(bool enable) = 0;
+
+};
+#endif
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