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: Display/TFT.cpp
- Revision:
- 10:668cf78ff93a
- Parent:
- 8:26757296c79d
- Child:
- 11:b842b8e332cb
--- a/Display/TFT.cpp Tue Feb 17 22:35:07 2015 +0000 +++ b/Display/TFT.cpp Thu Feb 19 00:33:27 2015 +0000 @@ -36,6 +36,8 @@ set_auto_up(false); //we don't have framebuffer topfixedareasize=0; scrollareasize=0; + usefastwindow=false; + fastwindowready=false; // cls(); // locate(0,0); } @@ -60,6 +62,8 @@ set_auto_up(false); topfixedareasize=0; scrollareasize=0; + usefastwindow=false; + fastwindowready=false; // locate(0,0); } void TFT::wr_cmd8(unsigned char cmd) @@ -157,11 +161,14 @@ if(o == 0) wr_cmd8(0x20); else wr_cmd8(0x21); } +void TFT::FastWindow(bool enable) + { + usefastwindow=enable; + } // TFT have both column and raw autoincrement inside a window, with internal counters void TFT::window(int x, int y, int w, int h) { - //ili9486 does not like truncated 2A/2B cmds, at least in par mode - //setting only start column/page would speedup, but needs a windowmax() before, maybe implement later + fastwindowready=false; // end raw/column going to be set to lower value than bottom-right corner wr_cmd8(0x2A); wr_data16(x); //start column wr_data16(x+w-1);//end column @@ -174,6 +181,7 @@ } void TFT::window4read(int x, int y, int w, int h) { + fastwindowready=false; wr_cmd8(0x2A); wr_data16(x); //start column wr_data16(x+w-1);//end column @@ -186,14 +194,47 @@ } void TFT::pixel(int x, int y, unsigned short color) { - window(x,y,1,1); + if(usefastwindow) //ili9486 does not like truncated 2A/2B cmds, at least in par mode + { + if(fastwindowready) //setting only start column/page does speedup, but needs end raw/column previously set to bottom-right corner + { + wr_cmd8(0x2A); + wr_data16(x); //start column only + wr_cmd8(0x2B); + wr_data16(y); //start page only + wr_cmd8(0x2C); //write mem, just send pixels color next + } + else + { + window(x,y,width()-x,height()-y); // set also end raw/column to bottom-right corner + fastwindowready=true; + } + } + else window(x,y,1,1); // proto->wr_gram(color); // 2C expects 16bit parameters wr_gram(color); } unsigned short TFT::pixelread(int x, int y) { + if(usefastwindow) //ili9486 does not like truncated 2A/2B cmds, at least in par mode + { + if(fastwindowready) //setting only start column/page does speedup, but needs end raw/column previously set to bottom-right corner + { + wr_cmd8(0x2A); + wr_data16(x); //start column only + wr_cmd8(0x2B); + wr_data16(y); //start page only + wr_cmd8(0x2E); //read mem, just pixelread next + } + else + { + window4read(x,y,width()-x,height()-y); // set also end raw/column to bottom-right corner + fastwindowready=true; + } + } + else window4read(x,y,1,1); + unsigned short color; - window4read(x,y,1,1); // proto->wr_gram(color); // 2C expects 16bit parameters color = rd_gram(); if(mipistd) color = BGR2RGB(color); // in case, convert BGR to RGB (should depend on cmd36 bit3) but maybe is device specific