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;
    }
}      
Revision:
14:29bab588ba75
Parent:
12:9c8f3076347c
Child:
15:b9483ba842c8
--- a/Inits/SSD1306.h	Sun Feb 22 16:13:11 2015 +0000
+++ b/Inits/SSD1306.h	Sun Feb 22 18:55:54 2015 +0000
@@ -1,12 +1,10 @@
 #ifndef MBED_SSD1306_H
 #define MBED_SSD1306_H
 
-
-
 #include "mbed.h"
 #include "LCD.h"
 
-/** Class for UC1608 display controller
+/** Class for SSD1306 display controller
 * to be copypasted and adapted for other controllers
 */
 class SSD1306 : public LCD
@@ -43,13 +41,6 @@
     */ 
     SSD1306(proto_t displayproto, int Hz, PinName mosi, PinName miso, PinName sclk, PinName CS, PinName reset, PinName DC, const char* name , unsigned int LCDSIZE_X = 128, unsigned  int LCDSIZE_Y = 64);
   
-    /** set the contrast of the screen
-      * @note here overrided because of not standard command
-      * @param o contrast 0-63
-      */
-    virtual void set_contrast(int o);
-    
-  
 protected: