Jump to content
sirri

analogRead not working :/ (energia)

Recommended Posts

Basic analogRead function doesn't seem working.. I am using Energia as a compiler. I am trying the minimum configuration. I am getting a value but this value doesn't change with potentiometer. I have even tried to ground the signal (to see if it is Zero) but nothing has changed..

 

What might be wrong? thanks .

post-30056-0-31953800-1354556404_thumb.jpg

Share this post


Link to post
Share on other sites

Thanks. I have changed it. But still isn't working. I am making a silly mistake but where ://

 

Adding the screen caps.

 

PS: I have checked the output of potentiometer with a multimeter. It is ok : /

PS2: I am using MSP430G2211 right now

(i also have MSP430G2231)

post-30056-0-54180100-1354559709_thumb.jpg

post-30056-0-57610600-1354559730_thumb.jpg

post-30056-0-11096500-1354559742_thumb.jpg

Share this post


Link to post
Share on other sites

hi,I want to know that how can we increase the number of analog input pins on MSP 432 from 24 to 48 or more.Please tell any solution for muxing booster pack.

Why not just use two MSP432s and let one talk to the other via UART?

Share this post


Link to post
Share on other sites

Thanks for yr replies...

Hi, My main aim is to data log into single memory card(32GB) of around 48 analog channels at speed of 1000 samples per second per channel.Please tell me about the best solution. As I know that speed of ADC in msp432 is 1MSPS so it is optimal for my solution.So by using UART & 2 MSP432 Launchpads ,can I send data to the one memory card interfaced with first launchpad??

As i need the data of 48 channel simultanously at an instant(not even a dely of 1ms is permissible ).Than I think muxing is not the solution of problem.Please help...

Or you could use an analog multiplexer. They used to come in 8 and 16 channel versions. TI (the old Burr Brown product line) should have them.

 

Why not just use two MSP432s and let one talk to the other via UART?

Share this post


Link to post
Share on other sites

If you want to sample 48 channels without any phase skew then you may need to use 48 sample and hold devices, sampling at the same time and then converting all the channels. You may still need to use an analog mux(es) to handle the number of channels.

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.


×
×
  • Create New...