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    Please help in ADC problem

    HI, everybody. I am doing a motor controller where signal form motor is passed to ADC and i obtain info from that point using altera DE2 board. My question is about the ADC output waveform. I use ADS7861 ADC from Texas Instru. I use a current sensor to sense the voltage and pass to ADC with only...
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    Regarding ADC output waveform

    Hi, everybody. I am using DE2 board to test my ADC , ADS7861 from texas instrument. I designed the code and it can be displayed through my Quartus SignalTap II Analyzer. However, the result is in accurate. The adc should has up to 5V range but the output waveforms are something like distorted or...
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    Please Help in data conversion

    i designed a VHDL module in obtaining signal from GPIO of DE2 board (a serial input). The code is as below. I tried to store the shift register value (where the 16 bits input signal is shifting in) into an array in order to separate and make it parallel output(1 bit per output pin to transfer...
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    Uegent! Regarding Busy signal from ADC to interact with SPI

    HI, everybody. For my project, i need to create a SPI to interact between DE2 board and ADC(ADS7861). I have created one but i think iy wouldn't work due to busy line and my approach. My approach is that i use the estimation approach where i use clock cycle to calculate the data conversion...
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    The comparator function in VHDL

    Good morning,everybody. I am doing a feedback system in DE2 board.Then,i want to construct a set of VHDL code that enable me to compare the incoming signal with the predefined value so that the difference can be used as improvement value to increase or decrease the input in order to make sure...
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    hardware interface between FPGA DE2 board(3.3V) and ADC(5V)

    HI, i need some technical help on the DE2 board. I am using DE2 board for my project and i need to interchange signals(SPI) to an ADC. The ADC is 5V for logic high but the max output signal for DE2 board is only 3.3V. I have tried to use the level/voltage translator(SN7417/SN7407) but it seen...
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    Urgent !!! Regarding Output of FPGA Alteral DE2 board

    Well, this is continued for my last post. I just want to show the output clock result for the TXS0108E. It is very sensitive and this is the clearest that i able to capture. Most of the time it is accompanied with lot of noise. The increment from 3.3V to 5V is achieved with some offset.Well, i...
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    Urgent !!! Regarding Output of FPGA Alteral DE2 board

    I want to interact my FPGA DE2 board with an ADC. However, the max output voltage from DE2 board is only 3.3V while my ADC is 5V peak. I tried to not connect anything in between and hoping again hope to obtain my expected result by just connect a jumper between DE2 board and ADC but it is not...
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    Please help --- Alteral DE2 alarm/buzzer sound

    Hi, good well to everybody i need to design a VHDL code to trigger an alarm/buzzer sound provided on Alteral DE2 board. However, i do not how to trigger it from my program. It is not written on the manual. Can someone shows me the way or provide me some reference? Thanks a lot. P/s: i want a...
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    how can i test a ADC before i connect it to a circuit?

    How to test a ADC? Hi, everybody. May i know how can i test a ADC before i connect it to a circuit? I read some reference and it showed me that some binary/digital number from ADC when an analog signal is supplied to it (Eg: 1--> 10 V). However, i cant figure out how i get that binary number...
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    Alteral DE2 board- how to program for buzzer/alarm sound

    Hi, i wish to design a VHDL code to trigger an alarm/buzzer sound provided on Alteral DE2 board. However, i do not how to trigger it from my program. It is not written on the manual. Can someone shows me the way or provide me some reference? Thanks a lot. P/s: i want a buzzer sound from DE2...
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    How to use buffer to store a particular bit in a stream?

    buffer AS the buffer can be read and write to architecture, can someone let me know how to use a buffer to store a particular bit inside a data stream? When i refer to reference, it has limited examples and it only show to store the whole data stream. What i am working for is to store a range...
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    Please Help.Regarding some I/O and clock cycle problem

    Hi, thanks for everyone for reading my post I am facing an output port problem I am constructed one serial-in and parallel-out converter.(It is showed in attachment) Well, the output of first bit is continuously on till the last bit of data in a transaction of data. (due to clock cycle that...
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    Please help.... method to connect an output in a VHDL module

    Hey,everybody. I am constructing an VHDL code for clock divider and specification of 2 pins. I need to trigger 2 pins using DE2 board for 1 clock cycle(auto trigger down itself after 1 clock cycle). However, i have no idea how to convert that output of my clock divider for the clock of my pin...
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    Please Help me, interconnecting ADC(ADS7861)and FPGA DE2

    Please Help me. Hi, i am a beginner in designing using VHDL. I need to construct interconnection between ADC(ADS7861 from Texas) and FPGA DE2 board. I have been told to use a SPI --- a serial to parallel SPi interface between ADC and FPGA. I have constructed the VHDL code for master(FPGA) and...
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    Urgent, Please help!!! Regarding the SPI

    Hi, i am a beginner in designing using VHDL. I need to construct interconnection between ADC(ADS7861 from Texas) and FPGA DE2 board. I have been told to use a SPI --- a serial to parallel SPi interface between ADC and FPGA. I have constructed the VHDL code for master(FPGA) and slave (ADC). I...
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    Need help in SPI......

    Good evening to all. I face the same case as pradeepkumar481 that posted on 18/11. I am using the ADS7861 (a quite new ADC that somemore u can request from Texas Instrument) and need to connect to FPGA DE2 board. I have been told to use a SPI on this. However, i have no idea what is the SPI and...

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