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1  Using Arduino / Programming Questions / Re: RTOS safe UART driver for ATmega2560 on: June 22, 2014, 03:22:44 pm
Most RTOS that are written should follow guide lines. Generic drives for RTOS should have function pointers so the user can declare timers,semaphore handlers or mutex handlers and so on. So that a port can be as simple. Most the user has to write is the ISR.  I have written my own RTOS. So I am looking for drivers. This is not the first time I am porting it to a different MCU. I have implemented multiple CPU in FPGA and ported my RTOS there.

I know Xilinx writes there drivers very structured so it was an easy port when I have run it on a microBlaze using a spartan 6 fpga.
2  Using Arduino / Programming Questions / Re: RTOS safe UART driver for ATmega2560 on: June 22, 2014, 03:09:23 pm
Yes that is exactly what it means. I am not sure if you understand my question. But I need a driver for the USART ports on the ATmega2560. I am trying to avoid writing them my self. Preferable with TX and RX ISR.
3  Using Arduino / Programming Questions / RTOS safe UART driver for ATmega2560 on: June 22, 2014, 02:30:48 pm
Hello,

Does anyone know where I can find a serial (UART) drives that are RTOS safe. Preferable arduinno port of hardware serial library.
4  Using Arduino / Microcontrollers / Re: atmega2560 external ram on: June 09, 2014, 07:38:28 am
Hey,

I had looked at the domain registration and notice the same thing. Anyway I contacted the seller and they said they don't manufacture it anymore. So looks like I will have to build one I really was trying to avoid that because of the lead time for the pcb.

Does anyone know where I can purchase one? I could even get 64KB to work i just was hoping for the 512KB because of future expansion.
5  Using Arduino / Microcontrollers / Re: atmega2560 external ram on: June 08, 2014, 11:42:27 am
I contacted them using there personal contact page.
But I recently tried that email address a few hours ago so I am hoping they respond
6  Using Arduino / Microcontrollers / atmega2560 external ram on: June 07, 2014, 09:21:23 pm
Hello,

I am looking for an alternative to QuadRAM sold here http://174.136.57.214/html/quadram.html. I don't think the site is still operational or any of it's product I have tired contacting them for purchase with out any response. Could someone point me to a viable alternative. I am looking for something where most of the driver code would have already been written. I am working on a prototype and development time is pretty short.
7  Using Arduino / Networking, Protocols, and Devices / Re: WifiFly RN171 Receive data from web browser on: April 08, 2014, 02:34:54 pm
I don't want to run this on Arduino. I am running this on a Xilinx Spartan 6 running a microblaze. I came to this forum because i know alot person use this in the Arduino community. But the code set I found for arduino was not easily portable. This set of codes are.

Also the I am running this on top an RTOS and the. I'll just create a wrapper function for the serial calls they have. And replace all the memory allocation with RTOS specific memory allocation.

I found what I need so this post could be closed.

Thanks
8  Using Arduino / Networking, Protocols, and Devices / Re: WifiFly RN171 Receive data from web browser on: April 08, 2014, 01:15:52 pm
Ok I think I found a code set that was better written. This is much more portable than the one presented below. All i need to do is write a wrapper function for my serial calls and timer.

http://mbed.org/teams/mbed/code/WiflyInterface/docs/68617e1f704c/classTCPSocketServer.html
9  Using Arduino / Networking, Protocols, and Devices / Re: WifiFly RN171 Receive data from web browser on: April 08, 2014, 12:03:27 pm
Hello pylon,

The module datasheet is attached. The code that I found is attached.
Also it key to note that I am not using an Arduino I am try to use code from the libraries provided by the Arduino to write my own driver code. But I am little confused how they setup the web server. I can't find where there sending the specific commands to the RN171 to set it up as a web server.

Also the other thing I want to do is resubmit data from the web client (browser) using a form.
10  Using Arduino / Networking, Protocols, and Devices / WifiFly RN171 Receive data from web browser on: April 07, 2014, 03:25:37 pm
Hello All,

I am trying to setup the RN171 to receive data from a web client. That is I want to create a web server on the RN171. So that I can load the HTML code from a browser and send data via the browser to the WiFi module.

I can't figure out how to do this. Has anyone done this. I have read through the manual but doesn't offer any help pertaining to this.
11  Products / Arduino Yún / Using realtime operating system with the Yun on: April 04, 2014, 02:11:55 pm
Hello All,

Been a while since I posted on this forum.

I am interesting in using the Yun but I need to know if there any real time operating system support for it. I want to run the RTOS on the Atheros AR9331.

Any help is much appreciated.

Thanks
12  Using Arduino / Microcontrollers / Re: Arduino Uno uploading technique Need some INFO on: June 05, 2013, 07:03:11 pm
Yup, I will be removing the mega from the board. That was the plan.
13  Using Arduino / Microcontrollers / Arduino Uno uploading technique Need some INFO on: June 05, 2013, 04:21:36 pm
Hey,

Quick question when uploading a program to the Ardunio Uno or any Ardunio the data is routed through the RX/TX lines to the MCU. The reason I am asking I am trying to hook my Atmega168 to my Uno board so I can program it. The Atmega 168 already has a bootloader on it.
14  Using Arduino / Project Guidance / Re: Robotic Arm With Android Camera on: May 03, 2013, 12:19:26 pm
Quote
If the object is known, you can use readily available AR libraries to establish its

Could you point me in the direction to where I can find these libraries, for android cable device.

The object will be unknown when it comes to 2D space for now because it will always lie on a surface "Y" (height) distance away from the arm. Once I get that working I will start to work in 3D space. For now the object can only move around in an X and Z plane that is left and right of the camera and up and down in depth view of the camera.

I am planning to use my android phone to do the camera tracking, for now it won't really be tracking anything it just going to find the object and try to figure out where it is in real space. If I can't do this I might have to mount the camera on the arm as you said.
15  Using Arduino / Project Guidance / Re: Robotic Arm With Android Camera on: May 02, 2013, 11:28:45 pm
Well the arm is just basically used to pick up things. But first got to get the arm to go to right place before I can get it to pick up things.

In terms of writing a arm solution library. I done work in my university with writing libraries for vector analysis using IR sensors.

In terms of the arm solution library there will only be one unknown as I see it that is the object which is not moving.  The camera and the arm will always be set into know position for X,Y,Z planes. The camera will not be mounted on the arm though.

I then need to use sensor to measure where the object is relative to sensor (if I can use the camera it measure the distance that would be good but I don't think I can do that would good enough accuracy). Once I get that data since the arm and sensor are in a know position relatively to each other I can then figure out the vector between the object and the arm. Doing this will allow to get the arm to traverse the vector that i created in 3D space. I could do 2D space and then for the 3rd dimension which is depth in my case calculate another vector for this and this should allow me to move the arm to correct location.

The arm will have sensor on it which will give me angles relative to it's start position which is always know. Since I know the length of each section of the arm and the angles I can calculate where the arm should go.

The hard part I really see if getting the sensor to measure the object since I will need to aim the sensor directly at the object which is relative to camera that will be looking at the object. If I can get the sensor data good. The vector won't be hard to calculate that first year university mechanics. smiley

I will work out the math tomorrow. Once I get my model correct I'll start to build
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