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;
    }
}

Diff: Protocols/PAR8.h

Revision:
11:b842b8e332cb
Parent:
7:bb0383b91104
Child:
20:14daa48ffd4c
diff -r 668cf78ff93a -r b842b8e332cb Protocols/PAR8.h
--- a/Protocols/PAR8.h	Thu Feb 19 00:33:27 2015 +0000
+++ b/Protocols/PAR8.h	Fri Feb 20 21:32:25 2015 +0000
@@ -77,9 +77,10 @@
     
     /** Read 16bit pixeldata from display controller (with dummy cycle)
     *
+    * @param convert true/false. Convert 18bit to 16bit, some controllers returns 18bit
     * @returns 16bit color
     */ 
-    virtual unsigned short rd_gram();
+    virtual unsigned short rd_gram(bool convert);
     
     /** Read 4x8bit register data (with dummy cycle)
     * @param reg the register to read