yinchai2
Newbie level 3
fpga sirc project
It is a small project at work that I design a generic IR TX controller. Carrier frequency, bit-time, and the number of carriers per bit time are all configurable. The controller has been loaded into FPGA, with the TX signal connected to a FPGA output, which is then connected to a mono 3.5mm phone jack. I bought a LED emitter, which can be plugged into the phone jack on one end, and the other end is the TX LED.
I configured my TX controller to send out a sequence that executes the Sony SIRC protocol, but when I pointed the TX LED against the Sony DVD player, the DVD player doesn't respond to it.
The sequence that the TX controller sends out is exactly the same as that shown in https://www.sbprojects.com/knowledge/ir/sirc.htm
FPGA drives 3.3V for logical '1', 0V for logical '0'.
I have checked the sequence that I sent to the phone jack and it is all correct. I am stuck right now, and any idea/help is appreciated.
Thanks.
It is a small project at work that I design a generic IR TX controller. Carrier frequency, bit-time, and the number of carriers per bit time are all configurable. The controller has been loaded into FPGA, with the TX signal connected to a FPGA output, which is then connected to a mono 3.5mm phone jack. I bought a LED emitter, which can be plugged into the phone jack on one end, and the other end is the TX LED.
I configured my TX controller to send out a sequence that executes the Sony SIRC protocol, but when I pointed the TX LED against the Sony DVD player, the DVD player doesn't respond to it.
The sequence that the TX controller sends out is exactly the same as that shown in https://www.sbprojects.com/knowledge/ir/sirc.htm
FPGA drives 3.3V for logical '1', 0V for logical '0'.
I have checked the sequence that I sent to the phone jack and it is all correct. I am stuck right now, and any idea/help is appreciated.
Thanks.