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/LCD.cpp

Revision:
18:ffa58f1a680a
Parent:
7:bb0383b91104
Child:
20:14daa48ffd4c
diff -r 244f9563ebc1 -r ffa58f1a680a Display/LCD.cpp
--- a/Display/LCD.cpp	Mon Feb 23 23:36:22 2015 +0000
+++ b/Display/LCD.cpp	Mon Mar 02 10:35:41 2015 +0000
@@ -278,7 +278,7 @@
      //   wr_cmd8(0x10|(col_offset>>4));      // set column hi  nibble
         wr_cmd16(setcolcmd);
         wr_cmd8(0xB0|(page+page_offset));      // set page
-        wr_gram(tmp, screensize_X>>1);   // send whole page pixels =0
+        wr_gram(tmp, screensize_X>>1);   // send whole page pixels = background
     }
 }
 int LCD::sizeX()