Darren Ulrich / UniGraphic

Added SPI burst mode to spi 8 bit.

Dependents:   Bicycl_Computer_NUCLEO-F411RE Bicycl_Computer_NUCLEO-L476RG

Fork of UniGraphic by GraphicsDisplay

Added SPI burst mode to this graphics driver. If whoever wants this rolled in to repository let me know. I replaced _spi.write(); with fastWrite(); and clearRX();

SPI8.cpp

// need to re-create SPI firmware to access SPI handle
static SPI_HandleTypeDef SpiHandle;

void SPI8::fastWrite(int data) {
    
      SpiHandle.Instance = SPI1;
    // Check if data is transmitted
    while ((SpiHandle.Instance->SR & SPI_SR_TXE) == 0);
    SpiHandle.Instance->DR = data;
}
    
void SPI8::clearRX( void ) {
        SpiHandle.Instance = SPI1;
    //Check if the RX buffer is busy
    //While busy, keep checking
    while (SpiHandle.Instance->SR & SPI_SR_BSY){   
        // Check RX buffer readable
        while ((SpiHandle.Instance->SR & SPI_SR_RXNE) == 0);
        int dummy = SpiHandle.Instance->DR;
    }
}

Protocols/PAR8.h@36:0ced7cf0ec8c, 2017-08-04 (annotated)

Committer:
trevieze
Date:
Fri Aug 04 19:47:21 2017 +0000
Revision:
36:0ced7cf0ec8c
Parent:
11:b842b8e332cb
Child:
20:14daa48ffd4c
Added Gimp Graphic Display Routine for Compass

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Geremia 0:75ec1b3cde17 1 #ifndef PAR8_H
Geremia 0:75ec1b3cde17 2 #define PAR8_H
Geremia 0:75ec1b3cde17 3
Geremia 0:75ec1b3cde17 4 #include "mbed.h"
Geremia 0:75ec1b3cde17 5 #include "Protocols.h"
Geremia 0:75ec1b3cde17 6 //#include "GraphicsDisplay.h"
Geremia 0:75ec1b3cde17 7
Geremia 6:8356d48a07db 8 /** Parallel 8bit interface
Geremia 6:8356d48a07db 9 */
Geremia 0:75ec1b3cde17 10 class PAR8 : public Protocols
Geremia 0:75ec1b3cde17 11 {
Geremia 0:75ec1b3cde17 12 public:
Geremia 0:75ec1b3cde17 13
Geremia 0:75ec1b3cde17 14 /** Create a PAR8 display interface with a GPIO port and 5 control pins
Geremia 0:75ec1b3cde17 15 *
Geremia 0:75ec1b3cde17 16 * @param port GPIO port to use
Geremia 0:75ec1b3cde17 17 * @param CS pin connected to CS of display
Geremia 0:75ec1b3cde17 18 * @param reset pin connected to RESET of display
Geremia 0:75ec1b3cde17 19 * @param DC pin connected to data/command of display
Geremia 0:75ec1b3cde17 20 * @param WR pin connected to SDI of display
Geremia 0:75ec1b3cde17 21 * @param RD pin connected to RS of display
Geremia 0:75ec1b3cde17 22 */
Geremia 0:75ec1b3cde17 23 PAR8(PortName port, PinName CS, PinName reset, PinName DC, PinName WR, PinName RD);
Geremia 0:75ec1b3cde17 24
Geremia 0:75ec1b3cde17 25 protected:
Geremia 0:75ec1b3cde17 26
Geremia 1:ff019d22b275 27 /** Send 8bit command to display controller
Geremia 0:75ec1b3cde17 28 *
Geremia 0:75ec1b3cde17 29 * @param cmd: byte to send
Geremia 0:75ec1b3cde17 30 *
Geremia 0:75ec1b3cde17 31 */
Geremia 1:ff019d22b275 32 virtual void wr_cmd8(unsigned char cmd);
Geremia 0:75ec1b3cde17 33
Geremia 1:ff019d22b275 34 /** Send 8bit data to display controller
Geremia 0:75ec1b3cde17 35 *
Geremia 1:ff019d22b275 36 * @param data: byte to send
Geremia 0:75ec1b3cde17 37 *
Geremia 0:75ec1b3cde17 38 */
Geremia 1:ff019d22b275 39 virtual void wr_data8(unsigned char data);
Geremia 0:75ec1b3cde17 40
Geremia 4:12ba0ecc2c1f 41 /** Send 2x8bit command to display controller
Geremia 1:ff019d22b275 42 *
Geremia 1:ff019d22b275 43 * @param cmd: halfword to send
Geremia 1:ff019d22b275 44 *
Geremia 1:ff019d22b275 45 */
Geremia 1:ff019d22b275 46 virtual void wr_cmd16(unsigned short cmd);
Geremia 1:ff019d22b275 47
Geremia 4:12ba0ecc2c1f 48 /** Send 2x8bit data to display controller
Geremia 1:ff019d22b275 49 *
Geremia 1:ff019d22b275 50 * @param data: halfword to send
Geremia 1:ff019d22b275 51 *
Geremia 1:ff019d22b275 52 */
Geremia 1:ff019d22b275 53 virtual void wr_data16(unsigned short data);
Geremia 1:ff019d22b275 54
Geremia 4:12ba0ecc2c1f 55 /** Send 16bit pixeldata to display controller
Geremia 4:12ba0ecc2c1f 56 *
Geremia 4:12ba0ecc2c1f 57 * @param data: halfword to send
Geremia 4:12ba0ecc2c1f 58 *
Geremia 4:12ba0ecc2c1f 59 */
Geremia 4:12ba0ecc2c1f 60 virtual void wr_gram(unsigned short data);
Geremia 4:12ba0ecc2c1f 61
Geremia 4:12ba0ecc2c1f 62 /** Send same 16bit pixeldata to display controller multiple times
Geremia 1:ff019d22b275 63 *
Geremia 1:ff019d22b275 64 * @param data: halfword to send
Geremia 1:ff019d22b275 65 * @param count: how many
Geremia 1:ff019d22b275 66 *
Geremia 1:ff019d22b275 67 */
Geremia 4:12ba0ecc2c1f 68 virtual void wr_gram(unsigned short data, unsigned int count);
Geremia 1:ff019d22b275 69
Geremia 4:12ba0ecc2c1f 70 /** Send array of pixeldata shorts to display controller
Geremia 1:ff019d22b275 71 *
Geremia 4:12ba0ecc2c1f 72 * @param data: unsigned short pixeldata array
Geremia 1:ff019d22b275 73 * @param lenght: lenght (in shorts)
Geremia 1:ff019d22b275 74 *
Geremia 1:ff019d22b275 75 */
Geremia 4:12ba0ecc2c1f 76 virtual void wr_grambuf(unsigned short* data, unsigned int lenght);
Geremia 0:75ec1b3cde17 77
Geremia 5:b222a9461d6b 78 /** Read 16bit pixeldata from display controller (with dummy cycle)
Geremia 5:b222a9461d6b 79 *
Geremia 11:b842b8e332cb 80 * @param convert true/false. Convert 18bit to 16bit, some controllers returns 18bit
Geremia 5:b222a9461d6b 81 * @returns 16bit color
Geremia 5:b222a9461d6b 82 */
Geremia 11:b842b8e332cb 83 virtual unsigned short rd_gram(bool convert);
Geremia 5:b222a9461d6b 84
Geremia 7:bb0383b91104 85 /** Read 4x8bit register data (with dummy cycle)
Geremia 7:bb0383b91104 86 * @param reg the register to read
Geremia 7:bb0383b91104 87 * @returns data as uint
Geremia 7:bb0383b91104 88 *
Geremia 7:bb0383b91104 89 */
Geremia 7:bb0383b91104 90 virtual unsigned int rd_reg_data32(unsigned char reg);
Geremia 7:bb0383b91104 91
Geremia 7:bb0383b91104 92 /** Read 3x8bit ExtendedCommands register data
Geremia 7:bb0383b91104 93 * @param reg the register to read
Geremia 7:bb0383b91104 94 * @returns data as uint
Geremia 7:bb0383b91104 95 * @note EXTC regs (0xB0 to 0xFF) are read/write registers, for Parallel mode directly accessible in both directions
Geremia 7:bb0383b91104 96 */
Geremia 7:bb0383b91104 97 virtual unsigned int rd_extcreg_data32(unsigned char reg, unsigned char SPIreadenablecmd);
Geremia 7:bb0383b91104 98
Geremia 0:75ec1b3cde17 99 /** HW reset sequence (without display init commands)
Geremia 0:75ec1b3cde17 100 */
Geremia 0:75ec1b3cde17 101 virtual void hw_reset();
Geremia 0:75ec1b3cde17 102
Geremia 0:75ec1b3cde17 103 /** Set ChipSelect high or low
Geremia 0:75ec1b3cde17 104 * @param enable 0/1
Geremia 0:75ec1b3cde17 105 */
Geremia 0:75ec1b3cde17 106 virtual void BusEnable(bool enable);
Geremia 0:75ec1b3cde17 107
Geremia 0:75ec1b3cde17 108
Geremia 0:75ec1b3cde17 109
Geremia 0:75ec1b3cde17 110 private:
Geremia 0:75ec1b3cde17 111
Geremia 0:75ec1b3cde17 112 PortInOut _port;
Geremia 0:75ec1b3cde17 113 DigitalOut _CS;
Geremia 0:75ec1b3cde17 114 DigitalOut _reset;
Geremia 0:75ec1b3cde17 115 DigitalOut _DC;
Geremia 0:75ec1b3cde17 116 DigitalOut _WR;
Geremia 0:75ec1b3cde17 117 DigitalOut _RD;
Geremia 0:75ec1b3cde17 118
Geremia 0:75ec1b3cde17 119 };
Geremia 0:75ec1b3cde17 120 #endif