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:
- 5:b222a9461d6b
- Parent:
- 4:12ba0ecc2c1f
- Child:
- 7:bb0383b91104
--- a/Protocols/PAR8.cpp Sun Feb 15 20:06:07 2015 +0000 +++ b/Protocols/PAR8.cpp Mon Feb 16 00:52:24 2015 +0000 @@ -174,7 +174,79 @@ _CS = 1; #endif } - +unsigned int PAR8::rd_data32_wdummy() +{ +#ifdef USE_CS + _CS = 0; +#endif + unsigned int r=0; + _DC = 1; // 1=data + _port.input(); + + _RD = 0; + _port.read(); //dummy read + _RD = 1; + + _RD = 0; + // _RD = 0; // add wait + r |= (_port.read()&0xFF); + r <<= 8; + _RD = 1; + + _RD = 0; + // _RD = 0; // add wait + r |= (_port.read()&0xFF); + r <<= 8; + _RD = 1; + + _RD = 0; +// _RD = 0; // add wait + r |= (_port.read()&0xFF); + r <<= 8; + _RD = 1; + + _RD = 0; + // _RD = 0; // add wait + r |= (_port.read()&0xFF); + _RD = 1; + + _CS = 1; // force CS HIG to interupt the cmd in case was not supported +#ifndef USE_CS //if CS is not used, force fixed LOW again + _CS = 0; +#endif + _port.output(); + return r; +} +unsigned short PAR8::rd_gram() +{ +#ifdef USE_CS + _CS = 0; +#endif + unsigned short r=0; + _DC = 1; // 1=data + _port.input(); + + _RD = 0; + _port.read(); //dummy read + _RD = 1; + + _RD = 0; +// _RD = 0; // add wait + r |= (_port.read()&0xFF); + r <<= 8; + _RD = 1; + + _RD = 0; +// _RD = 0; // add wait + r |= (_port.read()&0xFF); + _RD = 1; + +#ifdef USE_CS + _CS = 1; +#endif + _port.output(); + return r; +} void PAR8::hw_reset() { wait_ms(15);