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.cpp

Revision:
27:acb2594b8aa4
Parent:
25:daacdcf34e52
--- a/Display/TFT.cpp	Sun Oct 18 17:31:33 2015 +0000
+++ b/Display/TFT.cpp	Mon Oct 26 12:49:02 2015 +0000
@@ -22,13 +22,12 @@
 
 #define SWAP(a, b)  { a ^= b; b ^= a; a ^= b; }
 
+#if DEVICE_PORTINOUT 
 TFT::TFT(proto_t displayproto, PortName port, PinName CS, PinName reset, PinName DC, PinName WR, PinName RD, const int lcdsize_x, const int lcdsize_y, const char *name)
     : GraphicsDisplay(name), screensize_X(lcdsize_x), screensize_Y(lcdsize_y)
 {
-#if DEVICE_PORTINOUT    
     if(displayproto==PAR_8) proto = new PAR8(port, CS, reset, DC, WR, RD);
-    else if(displayproto==PAR_16) proto = new PAR16(port, CS, reset, DC, WR, RD);
-#endif    
+    else if(displayproto==PAR_16) proto = new PAR16(port, CS, reset, DC, WR, RD);   
     useNOP=false;
     scrollbugfix=0;
     mipistd=false;
@@ -45,6 +44,8 @@
   //  cls();
   //  locate(0,0);
 }
+#endif 
+
 TFT::TFT(proto_t displayproto, PinName* buspins, PinName CS, PinName reset, PinName DC, PinName WR, PinName RD, const int lcdsize_x, const int lcdsize_y, const char *name)
     : GraphicsDisplay(name), screensize_X(lcdsize_x), screensize_Y(lcdsize_y)
 {