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Hello, I d like to revive this topic to ask couple of questions around integration of the mini54tan on a custom board; I m very impressed by the integration done by Paul around Cortex M4 with Arduino and this beats everything around, for this reason I forsee I will never move to STM and will...

Hello, I m planning to deep dive on this usb audio code and to try implement a 24bits/96khz . The audio is bulk transferered every milissecond which needs a buffer of 576 bytes. can we configure the end point buffer to this size and let the dMA engine to queue each of these 576bytes packet into...

just received my 3.1 Amaizing Paul will check/port Scoop cooperative scheduler asap :)

in the meantime I found chapter 11.4.1 explaining that a port pin can be configured in alternative mode, and for example SAI_TX_BCLK could be sent to either pin number 27, 41 or 46 if they were configured respectively in Alternative 6, 4, 6 my second problem is to understand how I could send...

Hello, I revive this topic to ask some help about a project and some pins assignement but first a big thank you to MickMad for sharing the lib which gives a easy way to jumpin both DMA and I2S I d like to use the I2S receiver and transmiter separately with their own bitclock, fully...

I would configure them in input with internal pullup.

Hello ! the SCoop V1.2 is now ready and available ! all details on the goodies and change log on : http://arduino.cc/forum/index.php/topic,137801.msg1066535.html#msg1066535 this version also includes a version of the Android Scheduler included in the Arduino 1.51 libary ported for the AVR ...

You could start by downloading and reviewing the code written for jeenode with ota (over the air) programing. i think the code is called jeeloader. good luck with google

google code updated with SCoop library V1.1.1 XMass Pack, for enhancing the SCoopFifo object with atomic code portion. this enable using it in ISR like inexample 4 of the pack. please download this version if you plan to use fifo in isr. also include a 500hz analog sampling (example 5) without...

after a good night, I have slightly update the user guide document in version 1.1.1, just correcting some typo or bugs in the code examples. please download newer pdf file from the goggle code project repository thx!

NEW VERSION I m pleased to release a new SCoop library V1.1 XMass Pack with some updates and goodies. - updated user guide now 17 pages SCoop.h : yield() routines optimized, new object SCoopFifo for easy handling of Fifo buffers, some preprocessing parameters to optimize speed should...

Hi Bill, I just downloaeded the fix version 17 december and now examples have a compile error on teensy++20. but it works on arduino uno and teensy3 (I m on 1.02 beta8). here is the error I get. maybe this comes from my setup, but I doubt as everything else works fine on teensy++2.

Hi Bill, looks very interresting as you chibiOS can mix both concepts. you might consider providing some wraper or macro to make task and stack declaration easier for noob or beginers. as soon as I have some spare time, I ll play with your version and see if I can wrap something with the same...

SCoop pack Version 1 Hello, after a long week end of deep dive coding and reviewing and writing documentation, I m pleased to release the SCoop pack V1, including: -SCoop.h scheduler library with SCoopTask, SCoopEvent and SCoopTimer object framework and the yield() global function -TimerUp.h...

oops there is a litle "braket { } bug" in the SCoopTask::run() and you have to put the yield() call yourself inside your task loop() otherwise the scheduler might be stuck :) ... will be corrected this week end in release 1

thx for your feedback john / always place for improvement ! I ll review all of that again in deep this week end the project is now on google code here: https://code.google.com/p/arduino-scoop-cooperative-scheduler-arm-avr/

Some technical info which are not in the PDF. the library to include is called "SCoop.h" at the begining of SCoop.h it is possible to include "SCoopdebug and to define SCOOPTRACE. this will bring a set of additional methods and macro to facilitate printing (using sp instead of Serial.print for...

multi task cooperative scheduler for Teensy2 & 3 similar to java Thread with timer Hello here we are, I was in the idea of building a cooperative scheduler for the Arduino platform for a while. in fact this has to do with a 20 year old personal story :) I m pleased to propose this library...

yes it looks compatible. I have made a volume control for Uno/teensy myself, and so far I have problem getting some "ploc" in the amp when switching the upper bits...

Hi, Bill, I ve been playing with ChibiOS and I feel like there is a missing push R3 in the port_switch. in some case I was not able to get the "this" pointer when coming back into the task. seems R3 holds the this ptr at the entry of a method; on my side, I ve made strong progress on a...

I ve been looking into the chibi source code, and this is a bunch of things, a real OS :) cool. Well same for freeRTOS. on the other end this makes the choice difficult, because if you go that route , you need to invest time to deep dive and get the whole benefit of it. looking at the vast...