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: Protocols/Protocols.h

Revision:
4:12ba0ecc2c1f
Parent:
3:48f3282c2be8
Child:
5:b222a9461d6b
--- a/Protocols/Protocols.h	Sat Feb 14 17:42:21 2015 +0000
+++ b/Protocols/Protocols.h	Sun Feb 15 20:06:07 2015 +0000
@@ -1,3 +1,8 @@
+ /* mbed UniGraphic library - Abstract protocol class
+ * Copyright (c) 2015 Giuliano Dianda
+ * Released under the MIT License: http://mbed.org/license/mit
+ */
+ 
 /** @file Protocols.h
 */
 #ifndef Protocols_H
@@ -37,51 +42,42 @@
     */   
     virtual void wr_data8(unsigned char data) = 0;
     
-    /** Send same 8bit data to display controller multiple times
-    *
-    * @param data: byte to send
-    * @param count: how many
-    *
-    */   
-    virtual void wr_data8(unsigned char data, unsigned int count) = 0;
-    
-    /** Send array of data bytes to display controller
-    *
-    * @param data: unsigned char data array
-    * @param lenght: lenght
-    *
-    */   
-    virtual void wr_data8buf(unsigned char* data, unsigned int lenght) = 0;
-    
-    /** Send 16bit command to display controller 
+    /** Send 2x8bit command to display controller 
     *
     * @param cmd: halfword to send  
     *
     */   
     virtual void wr_cmd16(unsigned short cmd) = 0;
     
-    /** Send 16bit data to display controller 
+    /** Send 2x8bit data to display controller 
     *
     * @param data: halfword to send   
     *
     */   
     virtual void wr_data16(unsigned short data) = 0;
     
-    /** Send same 16bit data to display controller multiple times
+    /** Send 16bit pixeldata to display controller 
+    *
+    * @param data: halfword to send   
+    *
+    */   
+    virtual void wr_gram(unsigned short data) = 0;
+    
+    /** Send same 16bit pixeldata to display controller multiple times
     *
     * @param data: halfword to send
     * @param count: how many
     *
     */   
-    virtual void wr_data16(unsigned short data, unsigned int count) = 0;
+    virtual void wr_gram(unsigned short data, unsigned int count) = 0;
     
-    /** Send array of data shorts to display controller
+    /** Send array of pixeldata shorts to display controller
     *
-    * @param data: unsigned short data array
+    * @param data: unsigned short pixeldata array
     * @param lenght: lenght (in shorts)
     *
     */   
-    virtual void wr_data16buf(unsigned short* data, unsigned int lenght) = 0;
+    virtual void wr_grambuf(unsigned short* data, unsigned int lenght) = 0;
     
     /** HW reset sequence (without display init commands)   
     */