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/SPI8.h
- Revision:
- 5:b222a9461d6b
- Parent:
- 4:12ba0ecc2c1f
- Child:
- 6:8356d48a07db
--- a/Protocols/SPI8.h Sun Feb 15 20:06:07 2015 +0000 +++ b/Protocols/SPI8.h Mon Feb 16 00:52:24 2015 +0000 @@ -72,6 +72,19 @@ */ virtual void wr_grambuf(unsigned short* data, unsigned int lenght); + /** Read 4x8bit data from display controller (with dummy cycle) + * + * @returns data as uint + * + */ + virtual unsigned int rd_data32_wdummy(); + + /** Read 16bit pixeldata from display controller (with dummy cycle) + * + * @returns 16bit color + */ + virtual unsigned short rd_gram(); + /** HW reset sequence (without display init commands) */ virtual void hw_reset();