S12 / MagniV MicrocontrollersのトピックC9S12XDP512 SCI Functions [Beginner]

C9S12XDP512 SCI Functions [Beginner]

bwheeler — Thu, 18 Oct 2007 08:01:16 GMT

Warning: I am a beginner with DYI projects. I have experience coding in assembly for MC9S12DP256B

I am working on a design project and we have purchased the C9S12XDP512 from a vendor. At the moment, we are trying to do some basic input and output to a terminal.

Are there any SCI functions that are already written for the the processor in C that is available for use?
We have tried including the "stdio.h" library and the functions defined in there are not compiling. Is there something we are possibly missing?

Re: C9S12XDP512 SCI Functions [Beginner]

JimDon — Thu, 18 Oct 2007 19:25:58 GMT

1. First, you have to say how the SCI device is configured. Some have and din and a dout, other just a single I/O pin. So you need to provide more information. Perhaps tell us the part you wish to talk to, with a link to it's spec sheet.

2. Not enough information. In general there are no issues with stdio.h If you are expecting to open a file, you may have trouble with that, but things like sprintf work. Which functions are you having trouble with?

Re: C9S12XDP512 SCI Functions [Beginner]

JimDon — Thu, 18 Oct 2007 20:18:52 GMT

Sorry I misread read you said SCI I read SPI.

If you go here and scroll down to "Sample Programs" there are several sample SCI projects.
From Hello World to a fully buffered interrupt driven example.

Re: C9S12XDP512 SCI Functions [Beginner]

bwheeler — Thu, 18 Oct 2007 23:54:44 GMT

Thank you. This site seems like it would be helpful.