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; } }
Diff: Protocols/Protocols.h
- Revision:
- 0:75ec1b3cde17
- Child:
- 1:ff019d22b275
diff -r 000000000000 -r 75ec1b3cde17 Protocols/Protocols.h --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/Protocols/Protocols.h Thu Feb 12 22:22:47 2015 +0000 @@ -0,0 +1,64 @@ +/** @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 \ No newline at end of file