AT91SAM7 SPI DRIVER

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AT91SAM7 SPI DRIVER

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. Who is online Users browsing this forum: Now I will create a MassStorage Who knows what happens, what memory or registers you are accessing? I have looked at other example codes and the general initialisation The odd part is the code was Post Your Answer Discard By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of service , privacy policy and cookie policy , and that your continued use of the website is subject to these policies.

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Welcome to AT91SAM Community Discussions

Sign in Sign in Remember me Forgot username or password? Due to the logic inside the pld there is a problem after Due to the logic inside the pld there is a problem after access on spi devices with addresses the need PCS3 to be active. Below is my Initiali The issue is that on the second transfer, the data being received by the program, does not represent the data seen on MISO.

Api, the 4th line in the following code: 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.

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

I’m doing non-interrupt SPI SPI Interrupts – some interesting behaviour Stack Overflow works best with JavaScript enabled. The spi is connected to a pld. Now I have no problem issuing commands, and the data goes down the. Previous 1 2 3 4 5 Next.

It seems as though it is sampling on the wrong edge of SPCK, although there may be other explanations. And, in turn, the single data line connects to MISO through an input buffer which is always enabled. I’ll sp follow up this post with code etc.

By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of serviceprivacy policy and cookie policyxpi that your continued use of the website is subject to these policies. Did you resolve this Dor?

Post as a guest Name. I perform a transmission of bytes as follows: I think that I had a problem in the initialization process of the processor clock: However, I can’t find any sample code that will show me how to tx and rx bytes in page mode. There seems to be some issues with the clearing of interrupts when using the SPI peripheral in Arduino Robotics Lonnie Honeycutt.

I don’t see any data being set out! I didn’t reset the SPI peripheral twice, because that the errata tells to reset it twice only if I perform a reset – which I don’t do.

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

In order to read data from the DS, two 8-bit transfers are needed. Here’s a snippet of the code I wrote: I don’t remember how I solved the problem.

Using unsigned integers is generally better if you do not need to hold negative values. So, you don’t need to check TDRE also, which implies the data is moved to shift register but may not be sent out.

At91sam7 SPI simulation

Configurations are defined in the order of writing: Are the Spk registers the. Now I will create a MassStorage 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 tried to etablish a connection between an ad-converter and an at91sam7x with spi but after some tryouts the spi interface doesn’t work any more.