Mercurial > hp34970-firmware / file comparison
comparison: lib/unigraphic/SPI8.h
lib/unigraphic/SPI8.h
- changeset 5
- f1c85c2500f2
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| 4:219766126afb | 5:f1c85c2500f2 |
|---|---|
| 1 #ifndef SPI8_H | |
| 2 #define SPI8_H | |
| 3 | |
| 4 #define NDEBUG // avoid MBED_ASSERT to halt process when PinName DC==NC | |
| 5 | |
| 6 #include "mbed.h" | |
| 7 #include "Protocols.h" | |
| 8 //#include "GraphicsDisplay.h" | |
| 9 | |
| 10 /** SPI 8bit interface | |
| 11 */ | |
| 12 class SPI8 : public Protocols | |
| 13 { | |
| 14 public: | |
| 15 | |
| 16 /** Create an SPI 8bit display interface with 3 control pins | |
| 17 * | |
| 18 * @param SPI mosi | |
| 19 * @param SPI miso | |
| 20 * @param SPI sclk | |
| 21 * @param CS pin connected to CS of display | |
| 22 * @param reset pin connected to RESET of display | |
| 23 * @param DC pin connected to data/command of display | |
| 24 */ | |
| 25 SPI8(int Hz, PinName mosi, PinName miso, PinName sclk, PinName CS, PinName reset, PinName DC=NC); | |
| 26 | |
| 27 protected: | |
| 28 | |
| 29 /** Send 8bit command to display controller | |
| 30 * | |
| 31 * @param cmd: byte to send | |
| 32 * | |
| 33 */ | |
| 34 virtual void wr_cmd8(unsigned char cmd); | |
| 35 | |
| 36 /** Send 8bit data to display controller | |
| 37 * | |
| 38 * @param data: byte to send | |
| 39 * | |
| 40 */ | |
| 41 virtual void wr_data8(unsigned char data); | |
| 42 | |
| 43 /** Send 2x8bit command to display controller | |
| 44 * | |
| 45 * @param cmd: halfword to send | |
| 46 */ | |
| 47 virtual void wr_cmd16(unsigned short cmd); | |
| 48 | |
| 49 /** Send 2x8bit data to display controller | |
| 50 * | |
| 51 * @param data: halfword to send | |
| 52 * | |
| 53 */ | |
| 54 virtual void wr_data16(unsigned short data); | |
| 55 | |
| 56 /** Send 16bit pixeldata to display controller | |
| 57 * | |
| 58 * @param data: halfword to send | |
| 59 * | |
| 60 */ | |
| 61 virtual void wr_gram(unsigned short data); | |
| 62 | |
| 63 /** Send same 16bit pixeldata to display controller multiple times | |
| 64 * | |
| 65 * @param data: halfword to send | |
| 66 * @param count: how many | |
| 67 * | |
| 68 */ | |
| 69 virtual void wr_gram(unsigned short data, unsigned int count); | |
| 70 | |
| 71 /** Send array of pixeldata shorts to display controller | |
| 72 * | |
| 73 * @param data: unsigned short pixeldata array | |
| 74 * @param lenght: lenght (in shorts) | |
| 75 * | |
| 76 */ | |
| 77 virtual void wr_grambuf(unsigned short* data, unsigned int lenght); | |
| 78 | |
| 79 /** Read 16bit pixeldata from display controller (with dummy cycle) | |
| 80 * | |
| 81 * @param convert true/false. Convert 18bit to 16bit, some controllers returns 18bit | |
| 82 * @returns 16bit color | |
| 83 */ | |
| 84 virtual unsigned short rd_gram(bool convert); | |
| 85 | |
| 86 /** Read 4x8bit register data (with dummy cycle) | |
| 87 * @param reg the register to read | |
| 88 * @returns data as uint | |
| 89 * | |
| 90 */ | |
| 91 virtual unsigned int rd_reg_data32(unsigned char reg); | |
| 92 | |
| 93 /** Read 3x8bit ExtendedCommands register data | |
| 94 * @param reg the register to read | |
| 95 * @param SPIreadenablecmd vendor/device specific cmd to read EXTC registers | |
| 96 * @returns data as uint | |
| 97 * @note EXTC regs (0xB0 to 0xFF) are read/write registers but needs special cmd to be read in SPI mode | |
| 98 */ | |
| 99 virtual unsigned int rd_extcreg_data32(unsigned char reg, unsigned char SPIreadenablecmd); | |
| 100 | |
| 101 /** ILI932x specific, does a dummy read cycle, number of bits is protocol dependent | |
| 102 * for PAR protocols: a signle RD bit toggle | |
| 103 * for SPI8: 8clocks | |
| 104 * for SPI16: 16 clocks | |
| 105 */ | |
| 106 virtual void dummyread (); | |
| 107 | |
| 108 /** ILI932x specific, select register for a successive write or read | |
| 109 * | |
| 110 * @param reg register to be selected | |
| 111 * @param forread false = a write next (default), true = a read next | |
| 112 * @note forread only used by SPI protocols | |
| 113 */ | |
| 114 virtual void reg_select(unsigned char reg, bool forread =false); | |
| 115 | |
| 116 /** ILI932x specific, write register with data | |
| 117 * | |
| 118 * @param reg register to write | |
| 119 * @param data 16bit data | |
| 120 */ | |
| 121 virtual void reg_write(unsigned char reg, unsigned short data); | |
| 122 | |
| 123 /** ILI932x specific, read register | |
| 124 * | |
| 125 * @param reg register to be read | |
| 126 * @returns 16bit register value | |
| 127 */ | |
| 128 virtual unsigned short reg_read(unsigned char reg); | |
| 129 | |
| 130 /** HW reset sequence (without display init commands) | |
| 131 */ | |
| 132 virtual void hw_reset(); | |
| 133 | |
| 134 /** Set ChipSelect high or low | |
| 135 * @param enable 0/1 | |
| 136 */ | |
| 137 virtual void BusEnable(bool enable); | |
| 138 | |
| 139 DigitalOut _CS; | |
| 140 | |
| 141 private: | |
| 142 | |
| 143 SPI _spi; | |
| 144 DigitalOut _reset; | |
| 145 DigitalOut _DC; | |
| 146 | |
| 147 }; | |
| 148 #endif |
