Test Hardware Setup:
1. PC running terminal emulator s/w configured to 9600,8,1,N and None for flow control.
2. USB to RS232 converter (3.3V)
Test Method:
From the terminal emulator, we wish to type "A" and receive "A" back using 2 IrDA2 Click boards.
The baud rate jumpers are still set from factory B2=1, B1=0, B0=0. Should be 9600 according to manual.
Logically the "A" will travel by wire from the PC Tx pin and be received over wire into board 1 Rx pin.
Board 1 will optically transmit "A" and be received optically by board 2.
Board 2 will transmit "A" by wire out of the Tx pin and be received by wire on the PC Rx pin.
Wiring connections:
From ------------------------------------------------------To
USB/RS232 Converter Pin 3.3V -------------- IrDA2, 3.3V (boards 1,2)
USB/RS232 Converter Pin GND --------------- IrDA2, GND (boards 1,2)
USB/RS232 Converter Pin Tx ---------------- IrDA2, Rx (board 1)
USB/RS232 Converter Pin Rx ---------------- IrDA2, Tx (board 2)
3.3V ---------------------------------------IrDA2, EN (boards 1,2)
No Connection-------------------------------IrDA2, MODE
No Connection-------------------------------IrDA2, RESET
I am not sure what I am doing wrong but I don't have any communication. If anyone is familair with
this product and can provide some input as to what the problem is I would appreciate it.
Thanks.
IrDA2 Click
Post your reviews about the boards you have got.
Author
Message
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- Posts: 2
- Joined: 27 Jan 2015 22:04
- darko.minic
- Posts: 747
- Joined: 01 Dec 2014 11:10
Re: IrDA2 Click
#2 Post by darko.minic » 30 Jan 2015 12:33
Hello,
I believe I have answered you here:
http://www.mikroe.com/forum/viewtopic.p ... 08#p251408
Regards,
Darko
I believe I have answered you here:
http://www.mikroe.com/forum/viewtopic.p ... 08#p251408
Regards,
Darko
-
- Posts: 145
- Joined: 14 Nov 2012 00:30
- Location: China
- Contact:
Re: IrDA2 Click
#3 Post by robert_d1968 » 28 Feb 2015 17:08
If you have a scope you can check the pulse timing, see attached photo.
In the photo you will see the shortest pulse is 90 Us. This was generated by an STM32407VG. The buad rate was set for 9600 kbs. But you can see from the pulse timing, that it was a bit off. It should have been 104 Us.
So just cause it says 9600 kbs does not mean you are really getting it.
It's always best to check it
In the photo you will see the shortest pulse is 90 Us. This was generated by an STM32407VG. The buad rate was set for 9600 kbs. But you can see from the pulse timing, that it was a bit off. It should have been 104 Us.
So just cause it says 9600 kbs does not mean you are really getting it.
It's always best to check it
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