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: Display/TFT.h

Revision:
8:26757296c79d
Parent:
7:bb0383b91104
Child:
10:668cf78ff93a
--- a/Display/TFT.h	Tue Feb 17 11:02:06 2015 +0000
+++ b/Display/TFT.h	Tue Feb 17 17:54:14 2015 +0000
@@ -47,10 +47,10 @@
     */
     virtual void window(int x, int y, int w, int h);
     
-    /** Read pixel color at current location
+    /** Read pixel color at location
     * @param x is the horizontal offset to this pixel.
     * @param y is the vertical offset to this pixel.
-    * @param color defines the color for the pixel.
+    * @returns 16bit color.
     */
     virtual unsigned short pixelread(int x, int y);