ColdFire/68K Microcontrollers and ProcessorsのトピックM52259DEMO UART Interrupt

M52259DEMO UART Interrupt

MrCleaver — Wed, 02 Dec 2009 14:05:02 GMT

I am trying to write some simple code that will take characters entered on the keyboard and output it to hyperterminal, this function will be used in some MQX tasks.

Instead of using the built in drivers provided I would like to setup and code the ISRs manually.

I know that the process roughly goes:

Initialize the appropriate structures and registers

Install the interrupt service routines

Enable interrupts

And finally in the interrupt themselves, check for RX and TX states, and handle appropriately.

Can anyone provide some help on how I would go about writing this code? The amount of macros and predefined variables is mind boggling and I have no idea where to begin.

Thank you!

Re: M52259DEMO UART Interrupt

mjbcswitzerland — Fri, 04 Dec 2009 00:01:53 GMT

Hi MrCleaver

If you need alternative code see the following: http://forums.freescale.com/freescale/board/message?board.id=CFCOMM&message.id=7476#M7476

This allows various UART modes (interrupt, DMA driven, with flow control etc.). Generally:

http://www.utasker.com/kirin3.html

This allows you to test and modify the code in the uTasker Kirin3 simulator so is very efficient for learning the details involved. Fast and details technical support at http://www.utasker.com/forum/index.php?board=2.0

Regards

Mark

www.uTasker.com
- OS, TCP/IP stack, USB, device drivers and simulator for M521X, M521XX, M5221X, M5222X, M5223X, M5225X. One package does them all - "Embedding it better..."