Added SPI burst mode to spi 8 bit.
Dependents: Bicycl_Computer_NUCLEO-F411RE Bicycl_Computer_NUCLEO-L476RG
Fork of UniGraphic by
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/PAR8.h
- Committer:
- Geremia
- Date:
- 2015-02-12
- Revision:
- 0:75ec1b3cde17
- Child:
- 1:ff019d22b275
File content as of revision 0:75ec1b3cde17:
#ifndef PAR8_H #define PAR8_H #include "mbed.h" #include "Protocols.h" //#include "GraphicsDisplay.h" class PAR8 : public Protocols { public: /** Create a PAR8 display interface with a GPIO port and 5 control pins * * @param port GPIO port to use * @param CS pin connected to CS of display * @param reset pin connected to RESET of display * @param DC pin connected to data/command of display * @param WR pin connected to SDI of display * @param RD pin connected to RS of display */ PAR8(PortName port, PinName CS, PinName reset, PinName DC, PinName WR, PinName RD); protected: /** Send command byte to display controller * * @param cmd: byte to send * */ virtual void wr_cmd(unsigned char cmd); /** Send data byte to display controller * * @param data8: byte to send * */ virtual void wr_data8(unsigned char data8); /** Send same data byte to display controller multiple times * * @param data8: byte to send * @param count: how many * */ virtual void wr_data8(unsigned char data8, unsigned int count); /** Send array of data bytes to display controller * * @param data8: unsigned char data array * @param lenght: lenght of array * */ virtual void wr_data8buf(unsigned char* data8, unsigned int lenght); /** HW reset sequence (without display init commands) */ virtual void hw_reset(); /** Set ChipSelect high or low * @param enable 0/1 */ virtual void BusEnable(bool enable); private: PortInOut _port; DigitalOut _CS; DigitalOut _reset; DigitalOut _DC; DigitalOut _WR; DigitalOut _RD; }; #endif