Basically i glued Peter Drescher and Simon Ford libs in a GraphicsDisplay class, then derived TFT or LCD class (which inherits Protocols class), then the most derived ones (Inits), which are per-display and are the only part needed to be adapted to diff hw.
Dependents: testUniGraphic_150217 maze_TFT_MMA8451Q TFT_test_frdm-kl25z TFT_test_NUCLEO-F411RE ... more
I2C_bus.h
00001 #ifndef I2C_bus_H 00002 #define I2C_bus_H 00003 00004 #include "mbed.h" 00005 #include "Protocols.h " 00006 00007 /** I2C interface 00008 */ 00009 class I2C_bus : public Protocols 00010 { 00011 public: 00012 00013 /** Create an I2C display interface 00014 * 00015 * @param I2C frquency 00016 * @param I2C address 00017 * @param I2C pin sda 00018 * @param I2C pin scl 00019 */ 00020 I2C_bus(int Hz, int address,PinName sda, PinName scl); 00021 00022 protected: 00023 00024 /** Send 8bit command to display controller 00025 * 00026 * @param cmd: byte to send 00027 * 00028 */ 00029 virtual void wr_cmd8(unsigned char cmd); 00030 00031 /** Send 8bit data to display controller 00032 * 00033 * @param data: byte to send 00034 * 00035 */ 00036 virtual void wr_data8(unsigned char data); 00037 00038 /** Send 2x8bit command to display controller 00039 * 00040 * @param cmd: halfword to send 00041 * @note in SPI_16 mode a single 16bit transfer will be done 00042 */ 00043 virtual void wr_cmd16(unsigned short cmd); 00044 00045 /** Send 2x8bit data to display controller 00046 * 00047 * @param data: halfword to send 00048 * @note in SPI_16 mode a single 16bit transfer will be done 00049 */ 00050 virtual void wr_data16(unsigned short data); 00051 00052 /** Send 16bit pixeldata to display controller 00053 * 00054 * @param data: halfword to send 00055 * 00056 */ 00057 virtual void wr_gram(unsigned short data); 00058 00059 /** Send same 16bit pixeldata to display controller multiple times 00060 * 00061 * @param data: halfword to send 00062 * @param count: how many 00063 * 00064 */ 00065 virtual void wr_gram(unsigned short data, unsigned int count); 00066 00067 /** Send array of pixeldata shorts to display controller 00068 * 00069 * @param data: unsigned short pixeldata array 00070 * @param lenght: lenght (in shorts) 00071 * 00072 */ 00073 virtual void wr_grambuf(unsigned short* data, unsigned int lenght); 00074 00075 /** Read 16bit pixeldata from display controller (with dummy cycle) 00076 * 00077 * @param convert true/false. Convert 18bit to 16bit, some controllers returns 18bit 00078 * @returns 16bit color 00079 */ 00080 virtual unsigned short rd_gram(bool convert); 00081 00082 /** Read 4x8bit register data ( 00083 * reading from display ia I2C is not implemented in most controllers ! 00084 * 00085 */ 00086 virtual unsigned int rd_reg_data32(unsigned char reg); 00087 00088 /** Read 3x8bit ExtendedCommands register data 00089 * reading from display ia I2C is not implemented in most controllers ! 00090 */ 00091 virtual unsigned int rd_extcreg_data32(unsigned char reg, unsigned char SPIreadenablecmd); 00092 00093 /** ILI932x specific, does a dummy read cycle, number of bits is protocol dependent 00094 * reading from display ia I2C is not implemented in most controllers ! 00095 */ 00096 virtual void dummyread (); 00097 00098 /** ILI932x specific, select register for a successive write or read 00099 * 00100 * reading from display ia I2C is not implemented in most controllers ! 00101 */ 00102 virtual void reg_select(unsigned char reg, bool forread =false); 00103 00104 /** ILI932x specific, write register with data 00105 * 00106 * @param reg register to write 00107 * @param data 16bit data 00108 * not implemented for I2C ! 00109 */ 00110 virtual void reg_write(unsigned char reg, unsigned short data); 00111 00112 /** ILI932x specific, read register 00113 * 00114 * @param reg register to be read 00115 * @returns 16bit register value 00116 * not implemented for I2C ! 00117 */ 00118 virtual unsigned short reg_read(unsigned char reg); 00119 00120 /** HW reset sequence (without display init commands) 00121 * most I2C displays have no reset signal ! 00122 */ 00123 virtual void hw_reset(); 00124 00125 /** Set ChipSelect high or low 00126 * @param enable 0/1 00127 * not implemented for I2C ! 00128 */ 00129 virtual void BusEnable(bool enable); 00130 00131 private: 00132 00133 I2C _i2c; 00134 int _address; 00135 00136 }; 00137 00138 00139 #endif
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