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: Inits/SSD1306.cpp

Revision:
15:b9483ba842c8
Parent:
13:d8c593fa7705
Child:
17:1dafb896c6f5
diff -r 29bab588ba75 -r b9483ba842c8 Inits/SSD1306.cpp
--- a/Inits/SSD1306.cpp	Sun Feb 22 18:55:54 2015 +0000
+++ b/Inits/SSD1306.cpp	Mon Feb 23 16:05:16 2015 +0000
@@ -132,5 +132,5 @@
 {
     contrast = o;
   
-    wr_cmd16(0x8100|(o));
+    wr_cmd16(0x8100|(o&0xFF));
 }