How do I start with converting C++ lib

Hi

This is my first post in the forums and whilst being a C# dev for nearly 8 years, I've not done much with C or C++. I have recently purchased the DFRobots LCD 48x84 shield (http://goo.gl/BFlhd) and was trying to work out where to start converting the C to C#? I got a bit stumped with things like:

  TCCR2A &= ~((1<<WGM21) | (1<<WGM20));
  TCCR2B &= ~(1<<WGM22);
  TCCR2B = (1<<CS22)|(1<<CS21);      
   
  ASSR |=(0<<AS2);
 
   // Use normal mode  
   TCCR2A =0;    
   //Timer2 Overflow Interrupt Enable  
   TIMSK2 |= (0<<OCIE2A);
   TCNT2=0x6;  // counting starts from 6;  
   TIMSK2 = (1<<TOIE2);    
  
  SREG|=1<<SREG_I;

And even more like that...

   // LCD_RST = 0;
   DDRD |= (1<<SPI_CS)|(1<<LCD_DC)|(1<<LCD_RST)|(1<<SPI_MOSI)|(1<<SPI_SCK)|(1<<LCD_BL);
  
   PORTD &= ~(1<<LCD_RST);
   delayMicroseconds(1);
   PORTD |= (1<<LCD_RST);  

   PORTD &= ~(1<<SPI_CS);
   delayMicroseconds(1);
   PORTD |= (1<<SPI_CS);  
   delayMicroseconds(1);

I searched to see if someone has already converted this (no sense reinventing the wheel) but couldn't find anything.

Does anyone have any pointers?

Thanks

You're looking at raw microcontroller C instructions here. Some of them will be easy to translate. Some of them you may need to write native code (ARM C/C++) drivers for--like has been done on Arduino. Some quick tips: 1. DDRD is a memory location on AVR chips which designates which "D pins" are input vs. output. It's a bitmask of all the "D pins". In .NET MF, you'll create InputPorts or OutputPorts for these (or TristatePorts if you need to switch back and forth between input and output on a particular pin). 2. PORTD is a memory location on AVR chips which tells each "D pin" whether to source current or sink current (+5V or 0V). 3. "D pins" means the pins that start with "D" in their name...on the microcontroller. Also, for a lot of these types of things...if you're using SPI, you'll want to just go ahead and use the buillt-in .NET Micro Framework SPI functions. Unless the SPI data lines used for the shield are "special pins"--in which case you'll need to bit-bang it. Finally, if you want microsecond delays...you can do that in .NET MF, but you'll need to use native code interop to guarantee that kind of precision. Chris

I have recently purchased the DFRobots LCD 48x84 shield (http://goo.gl/BFlhd) and was trying to work out where to start converting the C to C#? I searched to see if someone has already converted this (no sense reinventing the wheel) but couldn't find anything.

Please have a look at the following forum posts:

• Nokia 3310 from nuelectronics (very similar shield from nuelectronics)
• LCD Help needed, 16x2s are boring, the correct initialization sequence is on the second page.

For future reference, the LCD has PCD8544 compatible controller and it is often found in Nokia 3310 and 5110 mobile phones.