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: Graphics/GraphicsDisplay.h

Revision:
10:668cf78ff93a
Parent:
5:b222a9461d6b
Child:
22:f9a37f22b9cb
Child:
35:782de649ef6f
Child:
36:0ced7cf0ec8c
--- a/Graphics/GraphicsDisplay.h	Tue Feb 17 22:35:07 2015 +0000
+++ b/Graphics/GraphicsDisplay.h	Thu Feb 19 00:33:27 2015 +0000
@@ -69,9 +69,6 @@
     * @param color defines the color for the pixel.
     */
     virtual void pixel(int x, int y, unsigned short color) = 0;
-
-    
-        
     
     /** Set the window, which controls where items are written to the screen.
     * When something hits the window width, it wraps back to the left side