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/Protocols.h
- Committer:
- Geremia
- Date:
- 2015-02-12
- Revision:
- 0:75ec1b3cde17
- Child:
- 1:ff019d22b275
File content as of revision 0:75ec1b3cde17:
/** @file Protocols.h */ #ifndef Protocols_H #define Protocols_H #include "mbed.h" /** Protocol types */ enum proto_t { PAR_8 /**< Parallel 8bit, pins 0 to 7 */ ,PAR_16 /**< Parallel 16bit, pins 0 to 15 */ ,SPI_8 /**< SPI 8bit */ ,SPI_16 /**< SPI 16bit */ }; /** Abstract class for spi and parallel protocols */ class Protocols { public: /** Send command byte to display controller * * @param cmd: byte to send * */ virtual void wr_cmd(unsigned char cmd) = 0; /** Send data byte to display controller * * @param data8: byte to send * */ virtual void wr_data8(unsigned char data8) = 0; /** 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) = 0; /** 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) = 0; /** HW reset sequence (without display init commands) */ virtual void hw_reset() = 0; /** Set ChipSelect high or low * @param enable 0/1 */ virtual void BusEnable(bool enable) = 0; }; #endif