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;
    }
}

Protocols/Protocols.h@3:48f3282c2be8, 2015-02-14 (annotated)

Committer:
Geremia
Date:
Sat Feb 14 17:42:21 2015 +0000
Revision:
3:48f3282c2be8
Parent:
1:ff019d22b275
Child:
4:12ba0ecc2c1f
small things

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Geremia 0:75ec1b3cde17 1 /** @file Protocols.h
Geremia 0:75ec1b3cde17 2 */
Geremia 0:75ec1b3cde17 3 #ifndef Protocols_H
Geremia 0:75ec1b3cde17 4 #define Protocols_H
Geremia 0:75ec1b3cde17 5
Geremia 0:75ec1b3cde17 6 #include "mbed.h"
Geremia 0:75ec1b3cde17 7
Geremia 3:48f3282c2be8 8 //#define USE_CS
Geremia 3:48f3282c2be8 9
Geremia 0:75ec1b3cde17 10 /** Protocol types
Geremia 0:75ec1b3cde17 11 */
Geremia 0:75ec1b3cde17 12 enum proto_t {
Geremia 0:75ec1b3cde17 13 PAR_8 /**< Parallel 8bit, pins 0 to 7 */
Geremia 0:75ec1b3cde17 14 ,PAR_16 /**< Parallel 16bit, pins 0 to 15 */
Geremia 0:75ec1b3cde17 15 ,SPI_8 /**< SPI 8bit */
Geremia 0:75ec1b3cde17 16 ,SPI_16 /**< SPI 16bit */
Geremia 0:75ec1b3cde17 17 };
Geremia 0:75ec1b3cde17 18
Geremia 0:75ec1b3cde17 19
Geremia 0:75ec1b3cde17 20 /** Abstract class for spi and parallel protocols
Geremia 0:75ec1b3cde17 21 */
Geremia 0:75ec1b3cde17 22 class Protocols
Geremia 0:75ec1b3cde17 23 {
Geremia 0:75ec1b3cde17 24 public:
Geremia 0:75ec1b3cde17 25
Geremia 1:ff019d22b275 26 /** Send 8bit command to display controller
Geremia 0:75ec1b3cde17 27 *
Geremia 0:75ec1b3cde17 28 * @param cmd: byte to send
Geremia 0:75ec1b3cde17 29 *
Geremia 0:75ec1b3cde17 30 */
Geremia 1:ff019d22b275 31 virtual void wr_cmd8(unsigned char cmd) = 0;
Geremia 0:75ec1b3cde17 32
Geremia 1:ff019d22b275 33 /** Send 8bit data to display controller
Geremia 0:75ec1b3cde17 34 *
Geremia 1:ff019d22b275 35 * @param data: byte to send
Geremia 0:75ec1b3cde17 36 *
Geremia 0:75ec1b3cde17 37 */
Geremia 1:ff019d22b275 38 virtual void wr_data8(unsigned char data) = 0;
Geremia 0:75ec1b3cde17 39
Geremia 1:ff019d22b275 40 /** Send same 8bit data to display controller multiple times
Geremia 0:75ec1b3cde17 41 *
Geremia 1:ff019d22b275 42 * @param data: byte to send
Geremia 0:75ec1b3cde17 43 * @param count: how many
Geremia 0:75ec1b3cde17 44 *
Geremia 0:75ec1b3cde17 45 */
Geremia 1:ff019d22b275 46 virtual void wr_data8(unsigned char data, unsigned int count) = 0;
Geremia 0:75ec1b3cde17 47
Geremia 0:75ec1b3cde17 48 /** Send array of data bytes to display controller
Geremia 0:75ec1b3cde17 49 *
Geremia 1:ff019d22b275 50 * @param data: unsigned char data array
Geremia 1:ff019d22b275 51 * @param lenght: lenght
Geremia 1:ff019d22b275 52 *
Geremia 1:ff019d22b275 53 */
Geremia 1:ff019d22b275 54 virtual void wr_data8buf(unsigned char* data, unsigned int lenght) = 0;
Geremia 1:ff019d22b275 55
Geremia 1:ff019d22b275 56 /** Send 16bit command to display controller
Geremia 1:ff019d22b275 57 *
Geremia 1:ff019d22b275 58 * @param cmd: halfword to send
Geremia 1:ff019d22b275 59 *
Geremia 1:ff019d22b275 60 */
Geremia 1:ff019d22b275 61 virtual void wr_cmd16(unsigned short cmd) = 0;
Geremia 1:ff019d22b275 62
Geremia 1:ff019d22b275 63 /** Send 16bit data to display controller
Geremia 1:ff019d22b275 64 *
Geremia 1:ff019d22b275 65 * @param data: halfword to send
Geremia 0:75ec1b3cde17 66 *
Geremia 0:75ec1b3cde17 67 */
Geremia 1:ff019d22b275 68 virtual void wr_data16(unsigned short data) = 0;
Geremia 1:ff019d22b275 69
Geremia 1:ff019d22b275 70 /** Send same 16bit data to display controller multiple times
Geremia 1:ff019d22b275 71 *
Geremia 1:ff019d22b275 72 * @param data: halfword to send
Geremia 1:ff019d22b275 73 * @param count: how many
Geremia 1:ff019d22b275 74 *
Geremia 1:ff019d22b275 75 */
Geremia 1:ff019d22b275 76 virtual void wr_data16(unsigned short data, unsigned int count) = 0;
Geremia 1:ff019d22b275 77
Geremia 1:ff019d22b275 78 /** Send array of data shorts to display controller
Geremia 1:ff019d22b275 79 *
Geremia 1:ff019d22b275 80 * @param data: unsigned short data array
Geremia 1:ff019d22b275 81 * @param lenght: lenght (in shorts)
Geremia 1:ff019d22b275 82 *
Geremia 1:ff019d22b275 83 */
Geremia 1:ff019d22b275 84 virtual void wr_data16buf(unsigned short* data, unsigned int lenght) = 0;
Geremia 0:75ec1b3cde17 85
Geremia 0:75ec1b3cde17 86 /** HW reset sequence (without display init commands)
Geremia 0:75ec1b3cde17 87 */
Geremia 0:75ec1b3cde17 88 virtual void hw_reset() = 0;
Geremia 0:75ec1b3cde17 89
Geremia 0:75ec1b3cde17 90 /** Set ChipSelect high or low
Geremia 0:75ec1b3cde17 91 * @param enable 0/1
Geremia 0:75ec1b3cde17 92 */
Geremia 0:75ec1b3cde17 93 virtual void BusEnable(bool enable) = 0;
Geremia 0:75ec1b3cde17 94
Geremia 0:75ec1b3cde17 95 };
Geremia 0:75ec1b3cde17 96 #endif