UniGraphic-Fork for ST7920-LCD-controller and SH1106. Tested with 128x64 LCD with SPI and 128x64-OLED with IIC
Dependents: UniGraphic-St7920-Test AfficheurUTILECO
Fork of UniGraphic by
Fork of the UniGraphic-Library for monochrome LCDs with ST7920 controller and 128x64-IIC-OLED-Display with SH1106-Controller
Had to adapt LCD for following reasons:
- Give access to screenbuffer buffer[] to parent class
- pixel() and pixel_read() as they are hardware-dependent
- added reset-pin to IIC-Interface
GraphicDisplay:: sends buffer to LCD when auto_update is set to true.
Testprogram for ST7920 can be found here:
https://developer.mbed.org/users/charly/code/UniGraphic-St7920-Test/
Protocols/Protocols.h
- Committer:
- Geremia
- Date:
- 2015-11-29
- Revision:
- 30:87855d03d91a
- Parent:
- 25:daacdcf34e52
- Child:
- 33:f87f06292637
File content as of revision 30:87855d03d91a:
/* 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 FLIP_NONE 0 #define FLIP_X 1 #define FLIP_Y 2 //#define USE_CS /** Protocol types */ #include "platform.h" #if DEVICE_PORTINOUT 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 */ }; #else enum proto_t { BUS_8 /**< Parallel 8bit, scattered pins */ ,BUS_16 /**< Parallel 16bit, scattered pins */ ,SPI_8 /**< SPI 8bit */ ,SPI_16 /**< SPI 16bit */ }; #endif /** 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