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/PAR8.cpp
- Revision:
- 11:b842b8e332cb
- Parent:
- 7:bb0383b91104
- Child:
- 20:14daa48ffd4c
diff -r 668cf78ff93a -r b842b8e332cb Protocols/PAR8.cpp --- a/Protocols/PAR8.cpp Thu Feb 19 00:33:27 2015 +0000 +++ b/Protocols/PAR8.cpp Fri Feb 20 21:32:25 2015 +0000 @@ -174,12 +174,12 @@ _CS = 1; #endif } -unsigned short PAR8::rd_gram() +unsigned short PAR8::rd_gram(bool convert) { #ifdef USE_CS _CS = 0; #endif - unsigned short r=0; + unsigned int r=0; _DC = 1; // 1=data _port.input(); @@ -197,12 +197,22 @@ // _RD = 0; // add wait r |= (_port.read()&0xFF); _RD = 1; - + if(convert) + { + r <<= 8; + _RD = 0; + // _RD = 0; // add wait + r |= _port.read(); + _RD = 1; + // gram is 18bit/pixel, if you set 16bit/pixel (cmd 3A), during writing the 16bits are expanded to 18bit + // during reading, you read the raw 18bit gram + r = RGB24to16((r&0xFF0000)>>16, (r&0xFF00)>>8, r&0xFF);// 18bit pixel padded to 24bits, rrrrrr00_gggggg00_bbbbbb00, converted to 16bit + } #ifdef USE_CS _CS = 1; #endif _port.output(); - return r; + return (unsigned short)r; } unsigned int PAR8::rd_reg_data32(unsigned char reg) {