C5505 SPI receive Interrupt

michael burke79518

Hello, I am new at using SPI with this processor C5505.

I have one question regarding the interrupts for the SPI. I want to execute a interrupt when a slave sends data and my C5505 receives this in the SPI data register.

Can an interrupt occur when my data register is full? or must my code actually Initiate a read command (SPICMD2) in order to jump to my ISR?

Mike

over 13 years ago

0 Simon Attard over 13 years ago

Intellectual 775 points

Hi Mike,

Are you using the Chip Support Library to interface with SPI? It should be easier, and there are some examples which are really useful.

Simon

0 michael burke79518 over 13 years ago in reply to Simon Attard

Intellectual 400 points

Can you point me to the folder with the examples you are thinking of?

0 Simon Attard over 13 years ago in reply to michael burke79518

Intellectual 775 points

Did you install the Chip Support Library?

You can find this here : http://software-dl.ti.com/dsps/dsps_public_sw/dsps_swops_houston/C55X/CSL-c55x-lowpower-versions.htm

When you download it, you will find the examples in a folder called ccs_v4.0_examples.

Also download the Chip Support Library Documentation : http://www.ti.com/lit/ug/spru433j/spru433j.pdf

Hope that helps.

Simon

0 Ekrem Bayraktar over 13 years ago in reply to Simon Attard

Expert 1190 points

Hello,

I have similar problems in interfacing SPI to a peripheral, I want to get data from the peripheral whenever a data ready signal is received by C5515. Can you give a specific example from CSL. I am using CSL for a while but do not see such an example.

Regards.

0 Simon Attard over 13 years ago in reply to Ekrem Bayraktar

Intellectual 775 points

Are you using ADS129x ? Did you look at the ECG example by TI? It is exactly what you want.

First you have to set an interrupt service routine for the external interrupt, so that it is executed whenever there is a data ready signal. Then, in this ISR, you read the SPI data.

Hope that helps.

Regards,

Simon

0 michael burke79518 over 13 years ago in reply to Simon Attard

Intellectual 400 points

Simon, I could not find the ECG example you are referencing. Is there a particular file/folder this is found in? I downloaded the CSL files you linked above but don't see this example. This sounds like a good example I can possibly use. thanks Mike

0 Simon Attard over 13 years ago in reply to michael burke79518

Intellectual 775 points

No sorry if I did not explain correctly. This example is not part of CSL. It is a stand alone application to be used with TMS320C5515EVM and ADS1298ECG module.

You can find it easily if you search for C5515 ECG medical development kit.

Regards,

Simon

0 Ekrem Bayraktar over 13 years ago in reply to michael burke79518

Expert 1190 points

michael burke79518 said:

Simon, I could not find the ECG example you are referencing. Is there a particular file/folder this is found in? I downloaded the CSL files you linked above but don't see this example. This sounds like a good example I can possibly use. thanks Mike

Hello Michael,

It is not inside CSL library. You should download the software, here is the link:

http://c5505-ezdsp.googlecode.com/files/ADS1298_ECGSystem_C5515EVM.zip

But be careful that this is a CCS 3.3 project, be careful when importing to CCS upper versions.

I hope this will help,

Regards.

0 Ekrem Bayraktar over 13 years ago in reply to Simon Attard

Expert 1190 points

Simon Attard said:

No sorry if I did not explain correctly. This example is not part of CSL. It is a stand alone application to be used with TMS320C5515EVM and ADS1298ECG module.

You can find it easily if you search for C5515 ECG medical development kit.

Regards,

Simon

I also write a response, You are faster :)

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C5505 SPI receive Interrupt