Stepan Smejkal / UniGraphic

.

Protocols/SPI16.h@28:2b562717a864, 2015-11-28 (annotated)

Committer:
Geremia
Date:
Sat Nov 28 17:54:09 2015 +0000
Revision:
28:2b562717a864
Parent:
20:14daa48ffd4c 
fix ILI932x spi

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Geremia 1:ff019d22b275 1 #ifndef SPI16_H
Geremia 1:ff019d22b275 2 #define SPI16_H
Geremia 1:ff019d22b275 3
Geremia 28:2b562717a864 4 #define NDEBUG // avoid MBED_ASSERT to halt process when PinName DC==NC
Geremia 28:2b562717a864 5
Geremia 1:ff019d22b275 6 #include "mbed.h"
Geremia 1:ff019d22b275 7 #include "Protocols.h"
Geremia 1:ff019d22b275 8 //#include "GraphicsDisplay.h"
Geremia 1:ff019d22b275 9
Geremia 6:8356d48a07db 10 /** SPI 16bit interface
Geremia 6:8356d48a07db 11 */
Geremia 1:ff019d22b275 12 class SPI16 : public Protocols
Geremia 1:ff019d22b275 13 {
Geremia 1:ff019d22b275 14 public:
Geremia 1:ff019d22b275 15
Geremia 1:ff019d22b275 16 /** Create an SPI 8bit display interface with 3 control pins
Geremia 1:ff019d22b275 17 *
Geremia 1:ff019d22b275 18 * @param SPI mosi
Geremia 1:ff019d22b275 19 * @param SPI miso
Geremia 1:ff019d22b275 20 * @param SPI sclk
Geremia 1:ff019d22b275 21 * @param CS pin connected to CS of display
Geremia 1:ff019d22b275 22 * @param reset pin connected to RESET of display
Geremia 1:ff019d22b275 23 * @param DC pin connected to data/command of display
Geremia 1:ff019d22b275 24 */
Geremia 20:14daa48ffd4c 25 SPI16(int Hz, PinName mosi, PinName miso, PinName sclk, PinName CS, PinName reset, PinName DC=NC);
Geremia 1:ff019d22b275 26
Geremia 1:ff019d22b275 27 protected:
Geremia 1:ff019d22b275 28
Geremia 1:ff019d22b275 29 /** Send 8bit command to display controller
Geremia 1:ff019d22b275 30 *
Geremia 1:ff019d22b275 31 * @note switches spi format 16->8->16, better use wr_cmd16 with NOP in front
Geremia 1:ff019d22b275 32 * @param cmd: byte to send
Geremia 1:ff019d22b275 33 *
Geremia 1:ff019d22b275 34 */
Geremia 1:ff019d22b275 35 virtual void wr_cmd8(unsigned char cmd);
Geremia 1:ff019d22b275 36
Geremia 1:ff019d22b275 37 /** Send 8bit data to display controller
Geremia 1:ff019d22b275 38 *
Geremia 1:ff019d22b275 39 * @note switches spi format 16->8->16, better use wr_data16 with repeated byte (if does not hurt)
Geremia 1:ff019d22b275 40 * @param data: byte to send
Geremia 1:ff019d22b275 41 *
Geremia 1:ff019d22b275 42 */
Geremia 1:ff019d22b275 43 virtual void wr_data8(unsigned char data);
Geremia 1:ff019d22b275 44
Geremia 4:12ba0ecc2c1f 45 /** Send 2x8bit command to display controller
Geremia 1:ff019d22b275 46 *
Geremia 1:ff019d22b275 47 * @param cmd: halfword to send
Geremia 4:12ba0ecc2c1f 48 * @note in SPI_16 mode a single 16bit transfer will be done
Geremia 1:ff019d22b275 49 */
Geremia 1:ff019d22b275 50 virtual void wr_cmd16(unsigned short cmd);
Geremia 1:ff019d22b275 51
Geremia 4:12ba0ecc2c1f 52 /** Send 2x8bit data to display controller
Geremia 4:12ba0ecc2c1f 53 *
Geremia 4:12ba0ecc2c1f 54 * @param data: halfword to send
Geremia 4:12ba0ecc2c1f 55 * @note in SPI_16 mode a single 16bit transfer will be done
Geremia 4:12ba0ecc2c1f 56 */
Geremia 4:12ba0ecc2c1f 57 virtual void wr_data16(unsigned short data);
Geremia 4:12ba0ecc2c1f 58
Geremia 4:12ba0ecc2c1f 59 /** Send 16bit pixeldata to display controller
Geremia 1:ff019d22b275 60 *
Geremia 1:ff019d22b275 61 * @param data: halfword to send
Geremia 1:ff019d22b275 62 *
Geremia 1:ff019d22b275 63 */
Geremia 4:12ba0ecc2c1f 64 virtual void wr_gram(unsigned short data);
Geremia 1:ff019d22b275 65
Geremia 4:12ba0ecc2c1f 66 /** Send same 16bit pixeldata to display controller multiple times
Geremia 1:ff019d22b275 67 *
Geremia 1:ff019d22b275 68 * @param data: halfword to send
Geremia 1:ff019d22b275 69 * @param count: how many
Geremia 1:ff019d22b275 70 *
Geremia 1:ff019d22b275 71 */
Geremia 4:12ba0ecc2c1f 72 virtual void wr_gram(unsigned short data, unsigned int count);
Geremia 1:ff019d22b275 73
Geremia 4:12ba0ecc2c1f 74 /** Send array of pixeldata shorts to display controller
Geremia 1:ff019d22b275 75 *
Geremia 4:12ba0ecc2c1f 76 * @param data: unsigned short pixeldata array
Geremia 1:ff019d22b275 77 * @param lenght: lenght (in shorts)
Geremia 1:ff019d22b275 78 *
Geremia 1:ff019d22b275 79 */
Geremia 4:12ba0ecc2c1f 80 virtual void wr_grambuf(unsigned short* data, unsigned int lenght);
Geremia 1:ff019d22b275 81
Geremia 5:b222a9461d6b 82 /** Read 16bit pixeldata from display controller (with dummy cycle)
Geremia 5:b222a9461d6b 83 *
Geremia 11:b842b8e332cb 84 * @param convert true/false. Convert 18bit to 16bit, some controllers returns 18bit
Geremia 5:b222a9461d6b 85 * @returns 16bit color
Geremia 5:b222a9461d6b 86 */
Geremia 11:b842b8e332cb 87 virtual unsigned short rd_gram(bool convert);
Geremia 5:b222a9461d6b 88
Geremia 7:bb0383b91104 89 /** Read 4x8bit register data (with dummy cycle)
Geremia 7:bb0383b91104 90 * @param reg the register to read
Geremia 7:bb0383b91104 91 * @returns data as uint
Geremia 7:bb0383b91104 92 *
Geremia 7:bb0383b91104 93 */
Geremia 7:bb0383b91104 94 virtual unsigned int rd_reg_data32(unsigned char reg);
Geremia 7:bb0383b91104 95
Geremia 7:bb0383b91104 96 /** Read 3x8bit ExtendedCommands register data
Geremia 7:bb0383b91104 97 * @param reg the register to read
Geremia 7:bb0383b91104 98 * @param SPIreadenablecmd vendor/device specific cmd to read EXTC registers
Geremia 7:bb0383b91104 99 * @returns data as uint
Geremia 7:bb0383b91104 100 * @note EXTC regs (0xB0 to 0xFF) are read/write registers but needs special cmd to be read in SPI mode
Geremia 7:bb0383b91104 101 */
Geremia 7:bb0383b91104 102 virtual unsigned int rd_extcreg_data32(unsigned char reg, unsigned char SPIreadenablecmd);
Geremia 7:bb0383b91104 103
Geremia 20:14daa48ffd4c 104 /** ILI932x specific, does a dummy read cycle, number of bits is protocol dependent
Geremia 20:14daa48ffd4c 105 * for PAR protocols: a signle RD bit toggle
Geremia 20:14daa48ffd4c 106 * for SPI8: 8clocks
Geremia 20:14daa48ffd4c 107 * for SPI16: 16 clocks
Geremia 20:14daa48ffd4c 108 */
Geremia 20:14daa48ffd4c 109 virtual void dummyread ();
Geremia 20:14daa48ffd4c 110
Geremia 20:14daa48ffd4c 111 /** ILI932x specific, select register for a successive write or read
Geremia 20:14daa48ffd4c 112 *
Geremia 20:14daa48ffd4c 113 * @param reg register to be selected
Geremia 20:14daa48ffd4c 114 * @param forread false = a write next (default), true = a read next
Geremia 20:14daa48ffd4c 115 * @note forread only used by SPI protocols
Geremia 20:14daa48ffd4c 116 */
Geremia 20:14daa48ffd4c 117 virtual void reg_select(unsigned char reg, bool forread =false);
Geremia 20:14daa48ffd4c 118
Geremia 20:14daa48ffd4c 119 /** ILI932x specific, write register with data
Geremia 20:14daa48ffd4c 120 *
Geremia 20:14daa48ffd4c 121 * @param reg register to write
Geremia 20:14daa48ffd4c 122 * @param data 16bit data
Geremia 20:14daa48ffd4c 123 */
Geremia 20:14daa48ffd4c 124 virtual void reg_write(unsigned char reg, unsigned short data);
Geremia 20:14daa48ffd4c 125
Geremia 20:14daa48ffd4c 126 /** ILI932x specific, read register
Geremia 20:14daa48ffd4c 127 *
Geremia 20:14daa48ffd4c 128 * @param reg register to be read
Geremia 20:14daa48ffd4c 129 * @returns 16bit register value
Geremia 20:14daa48ffd4c 130 */
Geremia 20:14daa48ffd4c 131 virtual unsigned short reg_read(unsigned char reg);
Geremia 20:14daa48ffd4c 132
Geremia 1:ff019d22b275 133 /** HW reset sequence (without display init commands)
Geremia 1:ff019d22b275 134 */
Geremia 1:ff019d22b275 135 virtual void hw_reset();
Geremia 1:ff019d22b275 136
Geremia 1:ff019d22b275 137 /** Set ChipSelect high or low
Geremia 1:ff019d22b275 138 * @param enable 0/1
Geremia 1:ff019d22b275 139 */
Geremia 1:ff019d22b275 140 virtual void BusEnable(bool enable);
Geremia 1:ff019d22b275 141
Geremia 1:ff019d22b275 142 DigitalOut _CS;
Geremia 1:ff019d22b275 143
Geremia 1:ff019d22b275 144 private:
Geremia 1:ff019d22b275 145
Geremia 1:ff019d22b275 146 SPI _spi;
Geremia 1:ff019d22b275 147 DigitalOut _reset;
Geremia 1:ff019d22b275 148 DigitalOut _DC;
Geremia 1:ff019d22b275 149
Geremia 1:ff019d22b275 150 };
Geremia 1:ff019d22b275 151 #endif