Duncan Wood / UniGraphic

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:   Brew

Protocols/BUS8.h@21:ae0a4eedfc90, 2015-03-31 (annotated)

Committer:
Geremia
Date:
Tue Mar 31 21:14:48 2015 +0000
Revision:
21:ae0a4eedfc90
Add BUS_8 and BUS_16 (slow as expected)

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Geremia 21:ae0a4eedfc90 1 #ifndef BUS8_H
Geremia 21:ae0a4eedfc90 2 #define BUS8_H
Geremia 21:ae0a4eedfc90 3
Geremia 21:ae0a4eedfc90 4 #include "mbed.h"
Geremia 21:ae0a4eedfc90 5 #include "Protocols.h"
Geremia 21:ae0a4eedfc90 6 //#include "GraphicsDisplay.h"
Geremia 21:ae0a4eedfc90 7
Geremia 21:ae0a4eedfc90 8 /** Parallel 8bit interface
Geremia 21:ae0a4eedfc90 9 */
Geremia 21:ae0a4eedfc90 10 class BUS8 : public Protocols
Geremia 21:ae0a4eedfc90 11 {
Geremia 21:ae0a4eedfc90 12 public:
Geremia 21:ae0a4eedfc90 13
Geremia 21:ae0a4eedfc90 14 /** Create a BUS8 display interface with scattered pins and 5 control pins
Geremia 21:ae0a4eedfc90 15 *
Geremia 21:ae0a4eedfc90 16 * @param buspins array of PinName to group as Bus
Geremia 21:ae0a4eedfc90 17 * , i.e PinName buspins[8]={PC_0,PC_1,PC_2,PC_3,D9,D8,D7,D6};
Geremia 21:ae0a4eedfc90 18 * @param CS pin connected to CS of display
Geremia 21:ae0a4eedfc90 19 * @param reset pin connected to RESET of display
Geremia 21:ae0a4eedfc90 20 * @param DC pin connected to data/command of display
Geremia 21:ae0a4eedfc90 21 * @param WR pin connected to SDI of display
Geremia 21:ae0a4eedfc90 22 * @param RD pin connected to RS of display
Geremia 21:ae0a4eedfc90 23 */
Geremia 21:ae0a4eedfc90 24 BUS8(PinName* buspins, PinName CS, PinName reset, PinName DC, PinName WR, PinName RD);
Geremia 21:ae0a4eedfc90 25
Geremia 21:ae0a4eedfc90 26 protected:
Geremia 21:ae0a4eedfc90 27
Geremia 21:ae0a4eedfc90 28 /** Send 8bit command to display controller
Geremia 21:ae0a4eedfc90 29 *
Geremia 21:ae0a4eedfc90 30 * @param cmd: byte to send
Geremia 21:ae0a4eedfc90 31 *
Geremia 21:ae0a4eedfc90 32 */
Geremia 21:ae0a4eedfc90 33 virtual void wr_cmd8(unsigned char cmd);
Geremia 21:ae0a4eedfc90 34
Geremia 21:ae0a4eedfc90 35 /** Send 8bit data to display controller
Geremia 21:ae0a4eedfc90 36 *
Geremia 21:ae0a4eedfc90 37 * @param data: byte to send
Geremia 21:ae0a4eedfc90 38 *
Geremia 21:ae0a4eedfc90 39 */
Geremia 21:ae0a4eedfc90 40 virtual void wr_data8(unsigned char data);
Geremia 21:ae0a4eedfc90 41
Geremia 21:ae0a4eedfc90 42 /** Send 2x8bit command to display controller
Geremia 21:ae0a4eedfc90 43 *
Geremia 21:ae0a4eedfc90 44 * @param cmd: halfword to send
Geremia 21:ae0a4eedfc90 45 *
Geremia 21:ae0a4eedfc90 46 */
Geremia 21:ae0a4eedfc90 47 virtual void wr_cmd16(unsigned short cmd);
Geremia 21:ae0a4eedfc90 48
Geremia 21:ae0a4eedfc90 49 /** Send 2x8bit data to display controller
Geremia 21:ae0a4eedfc90 50 *
Geremia 21:ae0a4eedfc90 51 * @param data: halfword to send
Geremia 21:ae0a4eedfc90 52 *
Geremia 21:ae0a4eedfc90 53 */
Geremia 21:ae0a4eedfc90 54 virtual void wr_data16(unsigned short data);
Geremia 21:ae0a4eedfc90 55
Geremia 21:ae0a4eedfc90 56 /** Send 16bit pixeldata to display controller
Geremia 21:ae0a4eedfc90 57 *
Geremia 21:ae0a4eedfc90 58 * @param data: halfword to send
Geremia 21:ae0a4eedfc90 59 *
Geremia 21:ae0a4eedfc90 60 */
Geremia 21:ae0a4eedfc90 61 virtual void wr_gram(unsigned short data);
Geremia 21:ae0a4eedfc90 62
Geremia 21:ae0a4eedfc90 63 /** Send same 16bit pixeldata to display controller multiple times
Geremia 21:ae0a4eedfc90 64 *
Geremia 21:ae0a4eedfc90 65 * @param data: halfword to send
Geremia 21:ae0a4eedfc90 66 * @param count: how many
Geremia 21:ae0a4eedfc90 67 *
Geremia 21:ae0a4eedfc90 68 */
Geremia 21:ae0a4eedfc90 69 virtual void wr_gram(unsigned short data, unsigned int count);
Geremia 21:ae0a4eedfc90 70
Geremia 21:ae0a4eedfc90 71 /** Send array of pixeldata shorts to display controller
Geremia 21:ae0a4eedfc90 72 *
Geremia 21:ae0a4eedfc90 73 * @param data: unsigned short pixeldata array
Geremia 21:ae0a4eedfc90 74 * @param lenght: lenght (in shorts)
Geremia 21:ae0a4eedfc90 75 *
Geremia 21:ae0a4eedfc90 76 */
Geremia 21:ae0a4eedfc90 77 virtual void wr_grambuf(unsigned short* data, unsigned int lenght);
Geremia 21:ae0a4eedfc90 78
Geremia 21:ae0a4eedfc90 79 /** Read 16bit pixeldata from display controller (with dummy cycle)
Geremia 21:ae0a4eedfc90 80 *
Geremia 21:ae0a4eedfc90 81 * @param convert true/false. Convert 18bit to 16bit, some controllers returns 18bit
Geremia 21:ae0a4eedfc90 82 * @returns 16bit color
Geremia 21:ae0a4eedfc90 83 */
Geremia 21:ae0a4eedfc90 84 virtual unsigned short rd_gram(bool convert);
Geremia 21:ae0a4eedfc90 85
Geremia 21:ae0a4eedfc90 86 /** Read 4x8bit register data (with dummy cycle)
Geremia 21:ae0a4eedfc90 87 * @param reg the register to read
Geremia 21:ae0a4eedfc90 88 * @returns data as uint
Geremia 21:ae0a4eedfc90 89 *
Geremia 21:ae0a4eedfc90 90 */
Geremia 21:ae0a4eedfc90 91 virtual unsigned int rd_reg_data32(unsigned char reg);
Geremia 21:ae0a4eedfc90 92
Geremia 21:ae0a4eedfc90 93 /** Read 3x8bit ExtendedCommands register data
Geremia 21:ae0a4eedfc90 94 * @param reg the register to read
Geremia 21:ae0a4eedfc90 95 * @returns data as uint
Geremia 21:ae0a4eedfc90 96 * @note EXTC regs (0xB0 to 0xFF) are read/write registers, for Parallel mode directly accessible in both directions
Geremia 21:ae0a4eedfc90 97 */
Geremia 21:ae0a4eedfc90 98 virtual unsigned int rd_extcreg_data32(unsigned char reg, unsigned char SPIreadenablecmd);
Geremia 21:ae0a4eedfc90 99
Geremia 21:ae0a4eedfc90 100 /** ILI932x specific, does a dummy read cycle, number of bits is protocol dependent
Geremia 21:ae0a4eedfc90 101 * for PAR protocols: a signle RD bit toggle
Geremia 21:ae0a4eedfc90 102 * for SPI8: 8clocks
Geremia 21:ae0a4eedfc90 103 * for SPI16: 16 clocks
Geremia 21:ae0a4eedfc90 104 */
Geremia 21:ae0a4eedfc90 105 virtual void dummyread ();
Geremia 21:ae0a4eedfc90 106
Geremia 21:ae0a4eedfc90 107 /** ILI932x specific, select register for a successive write or read
Geremia 21:ae0a4eedfc90 108 *
Geremia 21:ae0a4eedfc90 109 * @param reg register to be selected
Geremia 21:ae0a4eedfc90 110 * @param forread false = a write next (default), true = a read next
Geremia 21:ae0a4eedfc90 111 * @note forread only used by SPI protocols
Geremia 21:ae0a4eedfc90 112 */
Geremia 21:ae0a4eedfc90 113 virtual void reg_select(unsigned char reg, bool forread =false);
Geremia 21:ae0a4eedfc90 114
Geremia 21:ae0a4eedfc90 115 /** ILI932x specific, write register with data
Geremia 21:ae0a4eedfc90 116 *
Geremia 21:ae0a4eedfc90 117 * @param reg register to write
Geremia 21:ae0a4eedfc90 118 * @param data 16bit data
Geremia 21:ae0a4eedfc90 119 */
Geremia 21:ae0a4eedfc90 120 virtual void reg_write(unsigned char reg, unsigned short data);
Geremia 21:ae0a4eedfc90 121
Geremia 21:ae0a4eedfc90 122 /** ILI932x specific, read register
Geremia 21:ae0a4eedfc90 123 *
Geremia 21:ae0a4eedfc90 124 * @param reg register to be read
Geremia 21:ae0a4eedfc90 125 * @returns 16bit register value
Geremia 21:ae0a4eedfc90 126 */
Geremia 21:ae0a4eedfc90 127 virtual unsigned short reg_read(unsigned char reg);
Geremia 21:ae0a4eedfc90 128
Geremia 21:ae0a4eedfc90 129 /** HW reset sequence (without display init commands)
Geremia 21:ae0a4eedfc90 130 */
Geremia 21:ae0a4eedfc90 131 virtual void hw_reset();
Geremia 21:ae0a4eedfc90 132
Geremia 21:ae0a4eedfc90 133 /** Set ChipSelect high or low
Geremia 21:ae0a4eedfc90 134 * @param enable 0/1
Geremia 21:ae0a4eedfc90 135 */
Geremia 21:ae0a4eedfc90 136 virtual void BusEnable(bool enable);
Geremia 21:ae0a4eedfc90 137
Geremia 21:ae0a4eedfc90 138
Geremia 21:ae0a4eedfc90 139
Geremia 21:ae0a4eedfc90 140 private:
Geremia 21:ae0a4eedfc90 141
Geremia 21:ae0a4eedfc90 142 BusInOut _bus;
Geremia 21:ae0a4eedfc90 143 DigitalOut _CS;
Geremia 21:ae0a4eedfc90 144 DigitalOut _reset;
Geremia 21:ae0a4eedfc90 145 DigitalOut _DC;
Geremia 21:ae0a4eedfc90 146 DigitalOut _WR;
Geremia 21:ae0a4eedfc90 147 DigitalOut _RD;
Geremia 21:ae0a4eedfc90 148
Geremia 21:ae0a4eedfc90 149 };
Geremia 21:ae0a4eedfc90 150 #endif