MCF52259 - ADC calculations

saibhargavi — Fri, 28 May 2010 18:35:10 GMT

Hi,

I am currently working on MCF52259 ADC module. I am using an filtering equation to conver the raw value scanned to filter value. But the filtering equation returns the value in float which should be sent to Master via a 16 bit register. I have the following doubts now

1) can we declare float variables in micro controller programming?

2) How do i transfer the converted float value to master using 16 bit register?

Looking forward for the help

Regards

sai bhargavi

Re: MCF52259 - ADC calculations

scifi — Fri, 28 May 2010 18:56:29 GMT

Yes, floating point is supported.

As for the second question, I'm not sure what you mean. What exactly is Master and the 16-bit register? A variable of type float is 4 bytes in size. You should either split it in 2 16-bit chunks and transfer in 2 steps, or convert the float to a 16-bit type (loosing some precision in the process) and send the converted 16-bit value.

topic MCF52259 - ADC calculations in ColdFire/68K Microcontrollers and Processors

MCF52259 - ADC calculations

Re: MCF52259 - ADC calculations