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:
10:668cf78ff93a
Parent:
8:26757296c79d
Child:
11:b842b8e332cb
--- a/Display/TFT.h	Tue Feb 17 22:35:07 2015 +0000
+++ b/Display/TFT.h	Thu Feb 19 00:33:27 2015 +0000
@@ -110,10 +110,17 @@
     virtual void set_orientation(int o);
     
     /** Set ChipSelect high or low
-    * @param enable 0/1   
+    * @param enable true/false   
     */
     virtual void BusEnable(bool enable);
     
+    /** Enable fast window (default disabled)
+    * used to speedup functions that plots single pixels, like circle, oblique lines or just sparse pixels
+    * @param enable true/false
+    * @note most but not all controllers support this, even if datasheet tells they should
+    */
+    void FastWindow(bool enable);
+    
     /** Set scroll area boundaries
     * scroll is done in hw but only on the native vertical axis
     * TFTs are mainly native protrait view, so horizontal scroll if rotated in landscape view
@@ -232,6 +239,7 @@
     unsigned int scrollbugfix;
     bool mipistd;
     
+    
 private:
 
     Protocols* proto;
@@ -249,6 +257,9 @@
     int topfixedareasize;
     int scrollareasize;
     bool useNOP;
+    bool usefastwindow;
+    bool fastwindowready;
+    
 };
 
 #endif
\ No newline at end of file