Show Posts
Pages: [1]
1  Using Arduino / Interfacing w/ Software on the Computer / Re: Need a new update for the 115200 baud Problem on: February 14, 2013, 01:53:06 pm
Which arduino do you talk about?
2  Using Arduino / Interfacing w/ Software on the Computer / Re: Need a new update for the 115200 baud Problem on: February 14, 2013, 04:03:50 am
Noone do have this problem?
3  Using Arduino / Interfacing w/ Software on the Computer / Need a new update for the 115200 baud Problem on: February 13, 2013, 07:02:58 am
Hello together,

i have here two arduino uno R3, an arduino duemilanove and a arduino nano V3.0.
The uno has a atmel rs232 bridge, the nano and the duemilanove a FTDI chip.
The UNO R3 works 100% save with serial communication and 115200 Baud.
The Nano seems to have problems with my 4 byte transfere from the computer to the arduino (only once 4 bytes).
If I program the nano the communication works if I do not disconnect the usb line after the programming. If I do a disconnect and reconnect the arduino do not understand the 4 bytes again. Also setting the DTR and CTS hardware lines change the communication in data loss.

The web says now two things:
a.) buffer problem, the 328 can only take one (some tell three) bytes and the interrupt cannot be fast enough
b.) the 16MHz timing does not fit to 115200 Baud, but mostly with above 115200 baud (I need uncommon baudrate)

Why the UNO R3 is working pefect? Why do the nano serial work better if I program it before I use it?
Why the interrupt is blocked, some tell me there has been done optimations in the library. (I use latest arduino IDE)
I can use uncommon baudrates but which unknown baudrate is known as good for 115200?

Last but not least I am searchin for save libraries.

Would be fine if someone can explain this different problems with the same atmel chip.

http://arduino.cc/forum/index.php/topic,98364.0.html
http://binglongx.wordpress.com/2011/10/26/arduino-serial-port-communication/
4  Development / Other Software Development / Re: ArduinoCommander for android on: October 15, 2012, 04:47:58 am
I did and lead him to this forum.
Hopefully he will respond to this thread because I do not know if this is the correct subforum?
5  Development / Other Software Development / ArduinoCommander for android on: October 15, 2012, 04:11:20 am
Hello,

I am using / I tried to use the arduino commander from google play on androidx86 with houdini libs (latest one).
I have different informations about the ArduinoCommander. On google play it say: only ftdi, on the homepage all versions are running with 8u2 and 16u2.
I can install the commander, it scanns for the available usb devices and I can say yes to allow the USB connection in android.
After this the arduino comes up with a rey picture and on the top the message "Connecting to /dev/bus/usb/004/008" is displayed and it does not get colored.
Other programs for arduino are working fine.
As firmware I tried the standard firmata and the 9600 modified version. I tried all baud rates in the Commander.
Is there a fix?

Best regards,
SirNoName
6  Using Arduino / Programming Questions / Re: Faster development environment? on: October 08, 2012, 10:05:52 am
Hi, 

I will search for the direct output manipulation to avoid the write command. Toorrow I will test it again.
I do not bother about asynchron outputs, it is a question of the throughput of the CPU and the used background SDK that I try to test.
It is a simple benchmark before I program parts in a CPU that will be to slow for them like PID calculations for 3 DC motors and a aim loop timing of 1kHz.

Best regards,
SirNoName
7  Using Arduino / Programming Questions / Re: Faster development environment? on: October 08, 2012, 09:06:02 am
Hi,

my aim was simple to demonstrate a slowdown problem where I am not sure it is one.
I am happy that someone can point me to a faster solution which I do not know for now.
The code is, as written, the standard blink sample of the arduino gui with the delays removed.

How you can upload a AVR Studio project to a arduino HW?

thanks for your comments,
SirNoName
8  Using Arduino / Programming Questions / Faster development environment? on: October 08, 2012, 08:44:44 am
Hello together,

I did the blink test without delays to get informations about the speed that a loop can have.
I got 117,32 kHz pulse on the oscilloscope with the usual 16MHz frequency of the arduino uno.
My question is: is there a IO switching delay by the arduino uno (328) or is this a lost of the writedigital commands?
The second question would be: is there another well known software like the AVR Studio that can upload the firmware with the arduino bootloader?

Best regards,
SirNoName
Pages: [1]