I want use ADC at FPGA, but honestly i didnt understand to coding at FPGA use VHDL.. my project is to read output from saensor CO, but before go to there.. i want to try coding simple AD with input 5volt and i can see the output from FPGA.. can someone help me? or give me good tutorial.. cause i already search but only get code without good explanation with that code.. thanx so much,
Guest
#2660847
Where are the information? What (kind of) FPGA? What (kind of) Sensor?
my FPGA Spartan 3E.. sensor MQ 7 for Carbon monoksida, but i just want to try read input data 5volt from FPGA..
> but i just want to try read input data 5volt from FPGA. ????? Lets try this way: 1. 2. 3. 4. 5. sensor -> 0..5V -> adc -> serial/SPI/parallel -> fpga 1. http://www.sparkfun.com/products/9403 2. voltage interface 3. unknown 4. unknown 5. S3E > to try coding simple AD with input 5volt You don't want to code an adc. I suppose you simply want to code the interface to the adc... > and i can see the output from FPGA.. Where do ypou want to see the output? A fpga itself has no display or whatsoever...
ok i just want make clear my question. i just want to know how to read ADC from FPGA and i just make example input is 1-5 volt. and the output is biner or hexa? and i want see the output at LED.. so if any1 can help me to explain it im very appreciate it.
Guest
#2663758
Hey vicky, I got a premontion that you want to build a AD-Converter within an fpga. If I'm right, that this is not possible. If you just want to access an existing AD-Converter by using your fpga, than you'll have to follow the links posted an see, how this is could be archieved. Have a nice day, some user.
> i just want to know how to read ADC from FPGA Which ADC? There are thousands of ADCs and a big bunch of possible interfaces. Draw a picture/schematic of your system and/or answer the question i asked already. >> 3. unknown >> 4. unknown > and the output is biner or hexa? binary, octal, hexadecimal or decimal are just different views on the same value. Lets say, you have a value of 100dez this is then binary 001100100 and also 64hex and also 144oct. But its always the very same value! > i just want to know how to read ADC from FPGA Have you previously done such a thing with e.g. a microcontroller? Whats your knowledge level? Beginner? SomeUser wrote: > I got a premontion that you want to build a AD-Converter within an fpga. > If I'm right, that this is not possible. There are FPGAs on the market equipped with an on-chip ad converter. Actel/Microsemi has them...
No double postings please.
Guest
#2867257
Simple 1-Bit ADC in VHDL: LED <= SENSOR; Have fun
you have to configure your ADC chip if u r interfacing ADC to FPGA kit by using datasheet of that ADC . You have to write .ucf file for the same and for displaying result you have to use LCD or serial communication. But again for this u have to write code for LCD and serial programming. If you want to use LED for o/p then u have to use switches combination and also see manual for writing ucf file(switches,LED,ADC,clock).
Guest
#3593914
I want to interface ADC to CPLD, but honestly i didnt understand to coding at cpld use VHDL.. i want to try coding simple AD7705 with input 5volt and i can see the output from CPLD XC9572.on swiches(LEDS) can someone help me? or give me good tutorial.. cause i already search but only get code without good explanation with that code.. thanx so much,
Guest
#5400686
HELP VHDL code for ADC0808 control using FPGA
Please start an new thread for a new question! And add information about your system, your toolchain. Keep in mind: it's your homework, you should do it yourself. So, show what you have tried so far and tell whats the problem with it. Then we can look for a sloution.