Google [Bot] , Zennethtup and 1 guest. Introduction to Microcontrollers Mike Silva. I’m working with an The spi is connected to a pld. Also, I strongly recommend to use PDC if you are not exchanging data simultaneously, which is not the case I think. I want to communicate with a SPI serial flash.

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Who knows what happens, what memory or registers you are accessing?

I think that I had a problem in the initialization process of the processor clock: The 4th line is originally marked as a comment. Although I already have the workaround but I The issue is that on the second transfer, the data being received by the program, does not represent the data seen on MISO.

At91sam7 SPI simulation

Previous 1 2 3 4 5 Next. This is just a little follow-up for those looking to get SPI working on their project.

Here’s a snippet of the code I wrote: An example of initializing the SPI and performing a at91sa,7 of 5 bytes is highly appreciated and helpful. What is most important though is that the micro is at91dam7 to maintain a fixed sample On the first, a command byte is sent to the device.


Now I have no problem issuing commands, and the data goes down the. Before I explain the situation, I would like to explain my configuration.

embedded – AT91SAM7X’s SPI peripheral gets disabled on write to SPI_TDR – Stack Overflow

There seems to be some issues with the clearing of interrupts when using the SPI peripheral in Here is the code used to initialize the SPI port: I don’t remember how I solved the problem.

I am experienceing a problem that has me completely stumped, and I could find no other posting of an issue that was similar to this.

I’m working with an Post Your Answer Discard By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of serviceprivacy policy and cookie policyand that your continued use of the website is subject to these policies.

Who is online Users browsing this forum: The spi is connected to a pld. The odd part is the code was I want to communicate with a SPI serial flash. However, I can’t find any sample code that will show me how to tx and rx bytes in page mode.


simple question about AT91SAM7 atmel library for spi – Welcome to AT91SAM Community Discussions

After a spi access when all CS lines af91sam7 to be risen it occurs that a shift register connected to a address that only differs in PCS3 bit does a shift because SCK is still high whi Google [Bot]Zennethtup and 1 guest. Thanks for any tips.

We’d be interested to know if you found the root cause. However, I can’t find any sample code that Due to the logic inside the pld there is a problem after I have looked at other example codes and the general initialisation So, in this application, MOSI is connected to a tri-state output buffer that connects to the single data line.

Are the SPI registers the.

Bwooce 1, 18 What am I a missing here?