Matrix user forums

Hi Everyone.
I would like to know, if someone could point me the right direction to find the information/help that I need for this project I am working on. Maybe a book I need to read or Wiki page to look at, to give me the following information:
- How to incorporate chip specific code to change PIC (8bit) registers i. e. SSPCON1; SSPCON2 etc
- example of C code to achieve the changes
- do's and don'ts

I am not looking for the actual answers, just how or where do I look to learn how it's done. I am working on a project to read Ink jet printer cartridges. These have a very odd I2C protocol that I cannot replicate from the standard FC components. I need to change things like clock polarity at will during data transfers/addressing to get it to work.

Any suggestions would be greatly appreciated. I have looked at a previous forum post on this subject and to be honest, I do not fully understand the #C language others are using. A good book which relates to this topic is what I think I am looking for. Any ideas/suggestions pls.

I do know it can be done as others have achieved it using Arduino sketches, which again, I am not able to follow just yet.

Hello,

There are likely books on the xc compilers available. I started a book on flowcode for flowcode v5 which is available on the forums somewhere but is a bit out of date now.

viewtopic.php?f=54&t=14238&p=56468&hili ... ook#p56436

The easiest way to write a reg is using a c icon.

E.g.

SSPCON1 = 0b01011100;

You can also modify individual register elements using the dot notation.

E.g.

REGISTERbits.BITNAME = 0b11;

Or

SSPCON1bits.EN = 1;

The datasheet lists all the registers and register elements but you pragmatically find the structures defined in the device header file located within the compiler files.

Hi Ben

Thank for the info and book, it's very much appreciated. I have seen the header files you mention with the Microchip MPLAB files, but I am unable to locate these files within FC. However, I like the suggestion you have provided on how to change individual register bits, this is exactly what I am looking for. This will give me plenty of scope for experimentation Thank You.

Dave

Hi Everyone
I have been looking for some detailed information as to how to build a communication protocol to send/receive data to/from ink cartridges. The protocol is, as I have now concluded is more aligned to the SPI than I2C protocol, as there are no ack bits in the data collected from the cartridge chip. So, I need to use C programming (I think) to get this project working. Here is a useful link to free online books:
http://www.allitebooks.in/

There are some good books on offer (free) in pdf format do download.

Hi Everyone

I just want to share this with you. I have been trying to get to grips with FC7 & 8 C code environment. I have discovered that, by simply clicking onto and dragging the variable across into the C icon space creates the correct syntax. And it compiles correctly too.
FC7 FC8