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;
    }
}

Inits/IST3020.cpp@1:ff019d22b275, 2015-02-13 (annotated)

Committer:
Geremia
Date:
Fri Feb 13 15:25:10 2015 +0000
Revision:
1:ff019d22b275
Parent:
0:75ec1b3cde17
Child:
2:713844a55c4e
Added SPI_16, LCD done

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Geremia 0:75ec1b3cde17 1 #include "Protocols.h"
Geremia 0:75ec1b3cde17 2 #include "IST3020.h"
Geremia 0:75ec1b3cde17 3
Geremia 0:75ec1b3cde17 4 //////////////////////////////////////////////////////////////////////////////////
Geremia 0:75ec1b3cde17 5 // display settings ///////////////////////////////////////////////////////
Geremia 0:75ec1b3cde17 6 /////////////////////////////////////////////////////////////////////////
Geremia 0:75ec1b3cde17 7 #define IC_X_SEGS 256 // IST3020 SEG has range 0-255 (255-0 if ADC=1), check your datasheet, important for the orientation
Geremia 0:75ec1b3cde17 8 #define IC_Y_COMS 64 // IST3020 COM has range 0-63 (63-0 if SHL=1), check your datasheet, important for the orientation
Geremia 0:75ec1b3cde17 9 #define LCDSIZE_X 192 // display X pixels, IST3020 is advertised as 224x65 but display size could be smaller
Geremia 0:75ec1b3cde17 10 #define LCDSIZE_Y 64 // display Y pixels, the 65th is for accessing "icons"
Geremia 0:75ec1b3cde17 11
Geremia 0:75ec1b3cde17 12
Geremia 0:75ec1b3cde17 13
Geremia 0:75ec1b3cde17 14 IST3020::IST3020(proto_t displayproto, PortName port, PinName CS, PinName reset, PinName DC, PinName WR, PinName RD, const char *name)
Geremia 0:75ec1b3cde17 15 : LCD(displayproto, port, CS, reset, DC, WR, RD, LCDSIZE_X, LCDSIZE_Y, IC_X_SEGS, IC_Y_COMS, name)
Geremia 0:75ec1b3cde17 16 {
Geremia 0:75ec1b3cde17 17 hw_reset();
Geremia 0:75ec1b3cde17 18 BusEnable(true);
Geremia 0:75ec1b3cde17 19 init();
Geremia 0:75ec1b3cde17 20 }
Geremia 1:ff019d22b275 21 IST3020::IST3020(proto_t displayproto, int Hz, PinName mosi, PinName miso, PinName sclk, PinName CS, PinName reset, PinName DC, const char *name)
Geremia 1:ff019d22b275 22 : LCD(displayproto, Hz, mosi, miso, sclk, CS, reset, DC, LCDSIZE_X, LCDSIZE_Y, IC_X_SEGS, IC_Y_COMS, name)
Geremia 0:75ec1b3cde17 23 {
Geremia 0:75ec1b3cde17 24 hw_reset();
Geremia 0:75ec1b3cde17 25 init();
Geremia 0:75ec1b3cde17 26 }
Geremia 0:75ec1b3cde17 27 // reset and init the lcd controller
Geremia 0:75ec1b3cde17 28 void IST3020::init()
Geremia 0:75ec1b3cde17 29 {
Geremia 0:75ec1b3cde17 30 /* Start Initial Sequence ----------------------------------------------------*/
Geremia 0:75ec1b3cde17 31
Geremia 1:ff019d22b275 32 wr_cmd8(0xE2); // sw reset
Geremia 0:75ec1b3cde17 33 wait_ms(10);
Geremia 0:75ec1b3cde17 34
Geremia 1:ff019d22b275 35 wr_cmd8(0xAE); // display off
Geremia 1:ff019d22b275 36 wr_cmd8(0xAB); // built-in OSC on
Geremia 1:ff019d22b275 37 wr_cmd8(0xA2); // bias voltage (1/9)
Geremia 1:ff019d22b275 38 // wr_cmd8(0xA3); // bias voltage (1/7)
Geremia 0:75ec1b3cde17 39
Geremia 1:ff019d22b275 40 wr_cmd8(0xA0); // ADC select seg0-seg223
Geremia 1:ff019d22b275 41 //wr_cmd8(0xA1); // ADC select seg223-seg0
Geremia 1:ff019d22b275 42 wr_cmd8(0xC8); // SHL select com63-com0
Geremia 1:ff019d22b275 43 //wr_cmd8(0xC0); // SHL select com0-com63
Geremia 0:75ec1b3cde17 44
Geremia 1:ff019d22b275 45 wr_cmd8(0x2C); // Internal Voltage Converter ON
Geremia 0:75ec1b3cde17 46 wait_ms(10);
Geremia 1:ff019d22b275 47 wr_cmd8(0x2E); // Internal Voltage Regulator ON
Geremia 0:75ec1b3cde17 48 wait_ms(10);
Geremia 1:ff019d22b275 49 wr_cmd8(0x2F); // Internal Voltage Follower ON
Geremia 0:75ec1b3cde17 50 wait_ms(10);
Geremia 1:ff019d22b275 51 wr_cmd8(0x20); // Regulor_Resistor_Select resistor ratio 20-27 20=4.5(default) 27=8.0, 0.5 steps
Geremia 0:75ec1b3cde17 52 set_contrast(48);
Geremia 1:ff019d22b275 53 //wr_cmd8(0x81); // set contrast (reference voltage register set)
Geremia 1:ff019d22b275 54 //wr_cmd8(0x20); // contrast 00-3F default 20
Geremia 0:75ec1b3cde17 55
Geremia 1:ff019d22b275 56 wr_cmd8(0xA4); // LCD display ram (EntireDisplayOn disable)
Geremia 1:ff019d22b275 57 //wr_cmd8(0x70); // External Capacitors Discharge function enable (should be enabled by default)
Geremia 1:ff019d22b275 58 //wr_cmd8(0x77); // External Capacitors Discharge function disable
Geremia 1:ff019d22b275 59 wr_cmd8(0x40); // start line = 0
Geremia 1:ff019d22b275 60 wr_cmd8(0xA6); // display normal (1 = illuminated)
Geremia 1:ff019d22b275 61 wr_cmd8(0xAF); // display ON
Geremia 0:75ec1b3cde17 62
Geremia 0:75ec1b3cde17 63 }