Discussion in "ARM Development" started by    mayank058    May 14, 2015.
Thu May 21 2015, 04:46 AM
dear sir
there is nothing to zip.I just want to know, how to use DAC in LPC2378 or what kind of things I can do with this. Is it possible to convert a pulse wave into sine wave using this DAC.
Sat May 23 2015, 09:52 PM

Does the speaker work?.
'Exactly' where on the board are you measuring ?.

Sir I want to measure the analog signal on CRO.



I know you want to measure the analog signal.
I asked where... what pin are you connecting the scope probe to?,
Also, does the onboard speaker work?.
Mon May 25 2015, 04:57 AM
Dear sir,
I am taking output from PIN-8 (P0.26),,,,AOUT pin on the board..and the onboard speaker is also working good..,,
Mon May 25 2015, 06:16 PM
We need to do some simple tests.
Get the speaker to make a sound, continuous if possible.
Check Pin8 with your scope.. do you see a sine or square wave ?
Test jumper 3.. do you see a signal there, while the sound is playing ?

After doing that, try this code.
Do you get any compilation errors ?
//add device  include files

int main() 
 int bits;
 bits=PINSEL1 & 0xffcfffff; //preserve current settings for other pins
 bits |=0x00200000;    //set P0.26 as AOUT
 PINSEL1 = bits;

 bits=PINMODE1 & 0xffcfffff; //preserve current settings for other pins
 bits |=0x00200000;    //set P0.26 as no pullup or pulldown
 PINMODE1 = bits;

 while(1) //generate squarewave output
 DACR =0;
 DACR =0x0000ffc0;
} //end main 

void delay(void)
 int k;
 for(k = 1;k<= 10000;k++); 

[ Edited Tue May 26 2015, 09:45 PM ]
Fri Jun 26 2015, 10:00 AM
dear Sir,
This program is working on the board.After downloading of this program, board shows a continuous pulse wave from the AOUT pin on the CRO and a beep sound from speaker.Now what to do. How can I vary the value of AOUT.
Sat Jul 04 2015, 06:14 AM
You need to vary the digital value in DACR register to change the AOUT signal level.

Get Social


Powered by e107 Forum System


Tue May 04 2021, 08:34 PM
Hi there! I could have sworn I've been to this site before but after browsing through some of the post I realized it's new to me. Anyways, I'm definitely glad I found it and I'll be book-marking and checking back frequently! check my score https://creditscorecheckn.com
Tue May 04 2021, 06:39 PM
What's up everyone, it's my first go to see at this web page, and post is really fruitful in support of me, keep up posting these types of articles. Best Credit Score https://creditscoresids.com
Tue May 04 2021, 01:13 PM
What's up to all, the contents present at this site are really remarkable for people knowledge, well, keep up the good work fellows. karma credit score https://getcreditscoreww.com
Tue May 04 2021, 09:49 AM
I like the helpful info you provide in your articles. I will bookmark your blog and check again here frequently. I am quite certain I'll learn many new stuff right here! Good luck for the next! check credit report https://creditreportuss.com
Tue May 04 2021, 06:28 AM
I am not sure where you are getting your info, but great topic. I needs to spend some time learning more or understanding more. Thanks for wonderful information I was looking for this info for my mission. monthly credit report https://checkcreditscore24.com



Thu Jun 25 2020, 03:46 PM
Mon Jun 22 2020, 03:03 PM
Tue Jun 16 2020, 05:10 PM
Sat Jun 13 2020, 09:43 PM
Thu May 21 2020, 12:44 PM
Thu May 21 2020, 01:28 AM
Wed May 20 2020, 07:05 PM
Wed May 20 2020, 11:52 AM


Guests: 58, Members: 0 ...

most ever online: 182184
(Members: , Guests: 182184) on 06 Aug 2010: 05:37 AM

Members: 38215
Newest member: Mirza123