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:
22:f9a37f22b9cb
Parent:
10:668cf78ff93a
--- a/Graphics/GraphicsDisplay.h	Tue Mar 31 21:14:48 2015 +0000
+++ b/Graphics/GraphicsDisplay.h	Thu Jun 11 22:39:09 2015 +0000
@@ -277,6 +277,13 @@
    *
    */  
   void set_font(unsigned char* f, unsigned char firstascii=32, unsigned char lastascii=127, bool proportional = true);
+  
+  /** Zoom fount
+   *
+   * @param x_mul horizontal size multiplier
+   * @param y_mul vertical size multiplier
+   */  
+  void set_font_zoom(unsigned char x_mul, unsigned char y_mul);
 
     /** Get the number of columns based on the currently active font.
     * @returns number of columns.
@@ -341,6 +348,8 @@
     int  fonthor;   // hor size of font (char)
     int  fontvert;  // ver size of font (char)
     int fontbpl;   // bytes per line (char)
+    int fontzoomver; // size multiplier
+    int fontzoomhor; // size multiplier
     unsigned char firstch;  // first ascii code present in font array (usually 32)
     unsigned char lastch;   // last ascii code present in font array (usually 127)
     bool auto_up;  // autoupdate flag for LCD