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/SPI8.cpp
- Revision:
- 0:75ec1b3cde17
- Child:
- 1:ff019d22b275
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/Protocols/SPI8.cpp Thu Feb 12 22:22:47 2015 +0000 @@ -0,0 +1,87 @@ +#include "SPI8.h" + +//#define USE_CS + +SPI8::SPI8(PinName mosi, PinName miso, PinName sclk, PinName CS, PinName reset, PinName DC) + : _CS(CS), _spi(mosi, miso, sclk), _reset(reset), _DC(DC) +{ + _reset = 1; + _DC=1; + _CS=1; + _spi.format(8,0); // 8 bit spi mode 0 + // _spi.frequency(12000000); // 10 Mhz SPI clock, 12mhz for F411 + _spi.frequency(10000000); + hw_reset(); +} + +void SPI8::wr_cmd(unsigned char cmd) +{ +#ifdef USE_CS + _CS = 0; +#endif + _DC.write(0); // 0=cmd + _spi.write(cmd); // write 8bit +#ifdef USE_CS + _CS = 1; +#endif +} +void SPI8::wr_data8(unsigned char data8) +{ +#ifdef USE_CS + _CS = 0; +#endif + _DC.write(1); // 1=data + _spi.write(data8); // write 8bit +#ifdef USE_CS + _CS = 1; +#endif +} +void SPI8::wr_data8(unsigned char data8, unsigned int count) +{ +#ifdef USE_CS + _CS = 0; +#endif + _DC.write(1); // 1=data + while(count) + { + _spi.write(data8); // write 8bit + count--; + } +#ifdef USE_CS + _CS = 1; +#endif +} +void SPI8::wr_data8buf(unsigned char* data8, unsigned int lenght) +{ +#ifdef USE_CS + _CS = 0; +#endif + _DC.write(1); // 1=data + while(lenght) + { + _spi.write(*data8++); // write 8bit + // data8++; + lenght--; + } +#ifdef USE_CS + _CS = 1; +#endif +} +void SPI8::hw_reset() +{ + wait_ms(15); + _DC = 1; + // _CS = 1; + _CS = 0; + _reset = 0; // display reset + wait_us(50); + _reset = 1; // end reset + wait_ms(15); +#ifndef USE_CS + _CS=0; // put CS low now and forever +#endif +} +void SPI8::BusEnable(bool enable) +{ + _CS = enable ? 0:1; +} \ No newline at end of file