ELECINF344/381

Interactive web site of Télécom ParisTech's ELECINF344/ELECINF381 Robotics and Embedded Systems classes (a.k.a. ROSE, 2012 session).

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Double rainbow in the sky

We can finally control the leds one by one with the gumstix through the gpmc and the fpga and play a little bit with our system.

As usual, big thanks to Alexis for the help.

 

Now it’s time for the breakfast and the coffee in the students’ home !

Félix

RoseAce : communication between gumstix and FPGA

The FPGA is now able to do a write access with the GPMC (a read access is not possible for the moment). While Sylvain will work on the reading problem (there are some problems with nOE signal … ), I will test some final modules on the FPGA. All modules are written (with the new calculation flow) and, most of them (but not all for the moment) are tested on simulation. Today, I want to test on the FPGA some modules : ram controller and ram switch modules.

Jeremy Sauget

Writing to the fpga from the gumstix through the gpmc : first success !

Today we succeed in sending a data in the gpmc bus that we have read with the fpga and sent to the ram. In the 16 bits, one was false, so we still have some signal issue but it’s already a good news !

 

 

Félix

RoseAce : FPGA and gumstix communication

This week-end, I worked on the FPGA. All modules are written excepts the gumstix communication module because we have some problems with the gumstix I will explain next. I wrote a module to debug all system reading in ram (and so a module to simulate the ram behavior): debug is in progress.

On the gumstix, we use the NCS0 as chip select but, even if gumstix allows us to access to this signal, it is yet used by the NAND (which is not explain in the gumstix’s “data sheet”. So, we can’t use the GPMC to communicate with the FPGA for the moment. We have thought about several solutions: hardware patch (if it is possible) but, before doing this,  Felix is trying to find a software solution to disable the NAND to be able use the GPMC with the FPGA …

Jeremy Sauget