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