8-bit MicrocontrollersのトピックRe: IIC Module & Interrupt questions - MC9S08QG8

IIC Module & Interrupt questions - MC9S08QG8

Designer11 — Fri, 27 Jun 2008 00:37:03 GMT

Hello Guys,

I am new to using freescale IIC "I2C" module therefore I have been reading many app notes to get a better understand of it.

Objective: To use a freescale HCS08 family chip like MC9S08QG8" as a master to communicate with an LCD display as a slave to control brightness, contrast, etc...

Questions:

1.Can i use the IIC module alone without interrupt routines to achive my objective without any problems?

Thank You
Designer11

Added p/n to subject

Message Edited by NLFSJ on 2008-06-26 11:07 AM

Re: IIC Module & Interrupt questions - MC9S08QG8

JimDon — Fri, 27 Jun 2008 05:12:34 GMT

Yes, you can.

If you are using CW, Processor Expert will create the code for you.

Re: IIC Module & Interrupt questions - MC9S08QG8

bigmac — Fri, 27 Jun 2008 08:24:10 GMT

Hello,

Whether to use a polling method, or to use interrupts for IIC communications, will be determined mainly by what other tasks are required of the MCU. IIC communications is relatively slow (100kHz clock rate), and providing you can wait for each IIC sequence to complete, polling is fine. However, if you need to do other (non-interrupt) tasks whilst waiting, you may need to use interrupts for the IIC.

Regards,

Mac

Re: IIC Module & Interrupt questions - MC9S08QG8

Designer11 — Fri, 27 Jun 2008 21:39:05 GMT

Guys, thanks a lot for the replies