Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.
I am trying to debug a tutorial program provided by Actel on its SmartFusion Development Kit using Keil MDK ARM 4.70a. As per the tutorial, I have ensured all the jumper settings are in order. Initially, when I tried to debug the program, I got a message displaying "Need to update the firmware"...
Initially, when I tried to debug using Keil uVision ARM MDK v4.70a, there was a prompt for Firmware update. I clicked on OK and then it said Firmware Download failed. Later, the Ulink2 Debugger is being recognized; but only as an USB input device. When I tried debugging again, the error...
@ Apolama: MATLAB?
@ Keith: Is it possible to do that? As far as I understood, one can only change the duty cycle, and not the PWM period. Please clarify.
@ Kripacharya: Square waves.
I am using PIC18F2550. I intend to generate three sets of frequencies. One of 100 Hz, Second of (9/11/15/18 KHz) and third of 21 KHz. Is it possible with PIC18F2550? Also, 100 Hz frequency is used for modulation, meaning for the first 5 ms, I should get a (9/11/15/18) KHz frequency and for the...
Oh yes. The anode is grounded. I was planning to use an inverting op amp followed by some current boosting circuit, after the microcontroller output. Will this work?
Thank you so much Keith.
I have a question though - The anode of the LED is connected to the ground and the signal needs to be given to the cathode. Will the aforementioned devices be capable of sinking that much current?
@ Brad: I had thought of using IC 555. But I felt that using a microcontroller would be better because of the digital outputs.
@ Frank: I tried the configuration which you have suggested. Problem is I am getting very high voltage spikes.
Thank you all for your suggestions.
@Keith : No, actually. The design attached has been prepared by somebody else. I want to go for reduction of components as well. But before that, I wanted to make sure I am able to drive the circuit as per the requirements.
As for the laser diode...
I wish to drive a LASER diode with the following input specifications:
1. A constant current of 50 - 120 mA
2. Forward voltage is 1.1 - 1.5V
The LASER diode has to be driven by a signal (MIX_OUT in the schematic attached) whose frequency is (9/11/15/18) KHz for the first 5 ms and 21 KHz for the...
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.
