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:
21:ae0a4eedfc90
Parent:
20:14daa48ffd4c
Child:
25:daacdcf34e52
--- a/Protocols/Protocols.h	Mon Mar 23 14:08:04 2015 +0000
+++ b/Protocols/Protocols.h	Tue Mar 31 21:14:48 2015 +0000
@@ -18,8 +18,10 @@
 /** Protocol types
 */
 enum proto_t {
-    PAR_8   /**< Parallel 8bit, pins 0 to 7 */
-    ,PAR_16 /**< Parallel 16bit, pins 0 to 15 */
+    PAR_8   /**< Parallel 8bit, port pins 0 to 7 */
+    ,PAR_16 /**< Parallel 16bit, port pins 0 to 15 */
+    ,BUS_8   /**< Parallel 8bit, scattered pins */
+    ,BUS_16   /**< Parallel 16bit, scattered pins */
     ,SPI_8  /**< SPI 8bit */
     ,SPI_16 /**< SPI 16bit */
 };