UniGraphic-Fork for ST7920-LCD-controller and SH1106. Tested with 128x64 LCD with SPI and 128x64-OLED with IIC
Dependents: UniGraphic-St7920-Test AfficheurUTILECO
Fork of UniGraphic by
Fork of the UniGraphic-Library for monochrome LCDs with ST7920 controller and 128x64-IIC-OLED-Display with SH1106-Controller
Had to adapt LCD for following reasons:
- Give access to screenbuffer buffer[] to parent class
- pixel() and pixel_read() as they are hardware-dependent
- added reset-pin to IIC-Interface
GraphicDisplay:: sends buffer to LCD when auto_update is set to true.
Testprogram for ST7920 can be found here:
https://developer.mbed.org/users/charly/code/UniGraphic-St7920-Test/
Diff: Protocols/SPI16.cpp
- Revision:
- 7:bb0383b91104
- Parent:
- 5:b222a9461d6b
- Child:
- 11:b842b8e332cb
--- a/Protocols/SPI16.cpp Mon Feb 16 01:18:29 2015 +0000 +++ b/Protocols/SPI16.cpp Tue Feb 17 11:02:06 2015 +0000 @@ -121,26 +121,6 @@ _CS = 1; #endif } -unsigned int SPI16::rd_data32_wdummy() -{ -#ifdef USE_CS - _CS = 0; -#endif - unsigned int r=0; - _DC.write(1);; // 1=data - - r |= _spi.write(0); // we get only 15bit valid, first bit was the dummy cycle - r <<= 16; - r |= _spi.write(0); - r <<= 1; // 32bits are aligned, now collecting bit_0 - r |= (_spi.write(0) >> 15); - // we clocked 15 more bit so ILI waiting for 16th, we need to reset spi bus - _CS = 1; // force CS HIG to interupt the cmd -#ifndef USE_CS //if CS is not used, force fixed LOW again - _CS = 0; -#endif - return r; -} unsigned short SPI16::rd_gram() { #ifdef USE_CS @@ -160,6 +140,45 @@ r = RGB18to16((r&0xFC0000)>>16, (r&0xFC00)>>8, r&0xFC);// 18bit pixel, rrrrrr00_gggggg00_bbbbbb00, converted to 16bit return (unsigned short)r; } +unsigned int SPI16::rd_reg_data32(unsigned char reg) +{ +#ifdef USE_CS + _CS = 0; +#endif + wr_cmd8(reg); + unsigned int r=0; + _DC.write(1);; // 1=data + + r |= _spi.write(0); // we get only 15bit valid, first bit was the dummy cycle + r <<= 16; + r |= _spi.write(0); + r <<= 1; // 32bits are aligned, now collecting bit_0 + r |= (_spi.write(0) >> 15); + // we clocked 15 more bit so ILI waiting for 16th, we need to reset spi bus + _CS = 1; // force CS HIG to interupt the cmd +#ifndef USE_CS //if CS is not used, force fixed LOW again + _CS = 0; +#endif + return r; +} +unsigned int SPI16::rd_extcreg_data32(unsigned char reg, unsigned char SPIreadenablecmd) +{ + unsigned int r=0; + for(int regparam=1; regparam<4; regparam++) // when reading EXTC regs, first parameter is always dummy, so start with 1 + { + wr_cmd8(SPIreadenablecmd); // spi-in enable cmd, 0xD9 (ili9341) or 0xFB (ili9488) or don't know + wr_data8(0xF0|regparam); // in low nibble specify which reg parameter we want + wr_cmd8(reg); // now send cmd (select register we want to read) + _DC.write(1); // 1=data + r <<= 8; + r |= (_spi.write(0) >> 8); + } +_CS = 1; // force CS HIG to interupt the cmd +#ifndef USE_CS //if CS is not used, force fixed LOW again + _CS = 0; +#endif + return r; +} void SPI16::hw_reset() { wait_ms(15);