ADC configuration of a TMS320f2808.

Hi David!

You can refer to "Peripheral Headers and Example Project" software package for the F280x (http://www.ti.com/tool/sprc191) and this RG 3681.TI_ADC_28xxspru716d.pdf.

Regards,

Igor

Hi David,

I've attached a sample of ADC project wherein 2 ADCs have already been configured, you can simply add another 3 of them:

1018.adc_soc.zip

More more ADC examples download and install: http://www.ti.com/tool/sprc191

Regards,

Gautam

which configuration can you advise me? simultaneous or sequencial? i need to sample my 5 input instantly

i need to sample my 5 input instantly

I guess, simultaneous would suit you. But better try out both and check.

Regards,

Gautam

thank you for all,

another question please : when i compile my program, i have this error :

 error: identifier "AdcRegs" is undefined

please, can you help me solve this problem.

David,

perhaps you didn't add to your project the file DSP280x_GlobalVariableDefs.c. Check please and refer to this QSG 0363.DSP280x_HeaderFiles_QuickStart_Readme.pdf

Regards,

Igor

You're missing a header file! Please check with what Igor has suggested. If still not able to solve the issue, post a screenshot.

Regards,

Gautam

hello,

i notice that adc result is dual mapped in the dsp 2808; by default, my conversion results is store in which frame (peripheral 0 or 2) ? and how to choose where my result conversion will be store.

thank you for your help,

If you're using F2808 then please follow the ADC user guide: ADC mapping to the result registers are given in that doc. for eg:

ADCA0  ->  AdcRegs.ADCRESULT0

....

Regards,

Gautam

hello,

the TMS320F2808 contain a Analogue to Digital Converter (ADC);

What about a Digital to Analogue converter (DAC) ?  if it doesn't exist, which alternative can you propose me.

thank,

thanks very much

You're welcome. Just remember one thing, please post new questions on a brand new thread instead of continuing the older one. 

Regards, 

Gautam