topic Re: HSADC data acquisition in LPC Microcontrollers https://community.nxp.com/t5/LPC-Microcontrollers/HSADC-data-acquisition/m-p/573734#M18884 <HTML><HEAD></HEAD><BODY><STRONG>Content originally posted in LPCWare by metraTec on Mon Feb 29 06:59:41 MST 2016</STRONG><BR /><SPAN>Hello,</SPAN><BR /><SPAN>I just started with the same chip some time ago with about the same peripherals.</SPAN><BR /><BR /><SPAN>For the Square wave generation I would use the SGPIO. It is a bit hard to set, but from then on works easy. 200kHz should be generated easily. I'm doing a quiet similar thing and it works fine. </SPAN><BR /><BR /><SPAN>For the ADC: </SPAN><BR /><SPAN>You can activate the ADCHS manually. Just add an interrupt to your button and you should be fine. You may also use the IRQ of the SGPIO.</SPAN><BR /><BR /><SPAN>The activation of the ADCHS is not that complicated. Use your two channels and just pull them. You have 20 MS in total or per channel?</SPAN><BR /><BR /><SPAN>Just write the data to the RAM to excange to the M0 App and in a Pause (or any time, but you seem to have enough time anyway) send the data via USB.</SPAN><BR /></BODY></HTML> Wed, 15 Jun 2016 18:59:16 GMT lpcware 2016-06-15T18:59:16Z HSADC data acquisition https://community.nxp.com/t5/LPC-Microcontrollers/HSADC-data-acquisition/m-p/573733#M18883 <HTML><HEAD></HEAD><BODY><STRONG>Content originally posted in LPCWare by jcunha on Tue Dec 29 11:47:24 MST 2015</STRONG><BR /><SPAN>Hello everyone.</SPAN><BR /><SPAN>I'm new to LPC microcontrollers.</SPAN><BR /><BR /><SPAN>I need to develop an application for LPC4370. I'm using LPCXpresso v8.0.</SPAN><BR /><SPAN>For now I'm using a LPC link 2 to test my code.</SPAN><BR /><BR /><SPAN>I already start using it, mainly using the examples from LPCOpen, but I need some help in order to do a project.</SPAN><BR /><SPAN>I will describe what I need and if someone could steer me in the right direction, I would appreciate.</SPAN><BR /><SPAN>I need to generate 1 square wave, acquire 2 sine waves and send acquired data to a PC.</SPAN><BR /><SPAN>The square wave (200 kHz, 50% duty cycle) should be generated for 10 ms, and after 100 ms, generated again for 10 ms, and so on. This wave is generated periodically as long as a button is ON. Button OFF, no square wave.</SPAN><BR /><SPAN>I also need to start acquiring samples from 2 ADC for 10 ms, when the square wave starts being generated.</SPAN><BR /><SPAN>I need 20 MS/s sampling frequency (one sample each 50 ns), which gives 200000 samples for each adc.</SPAN><BR /><BR /><SPAN>After acquisition, data needs to be sent through USB to a PC for post processing.</SPAN><BR /><SPAN>Can anyone help me?</SPAN><BR /><SPAN>Thanks</SPAN></BODY></HTML> Wed, 15 Jun 2016 18:59:15 GMT https://community.nxp.com/t5/LPC-Microcontrollers/HSADC-data-acquisition/m-p/573733#M18883 lpcware 2016-06-15T18:59:15Z Re: HSADC data acquisition https://community.nxp.com/t5/LPC-Microcontrollers/HSADC-data-acquisition/m-p/573734#M18884 <HTML><HEAD></HEAD><BODY><STRONG>Content originally posted in LPCWare by metraTec on Mon Feb 29 06:59:41 MST 2016</STRONG><BR /><SPAN>Hello,</SPAN><BR /><SPAN>I just started with the same chip some time ago with about the same peripherals.</SPAN><BR /><BR /><SPAN>For the Square wave generation I would use the SGPIO. It is a bit hard to set, but from then on works easy. 200kHz should be generated easily. I'm doing a quiet similar thing and it works fine. </SPAN><BR /><BR /><SPAN>For the ADC: </SPAN><BR /><SPAN>You can activate the ADCHS manually. Just add an interrupt to your button and you should be fine. You may also use the IRQ of the SGPIO.</SPAN><BR /><BR /><SPAN>The activation of the ADCHS is not that complicated. Use your two channels and just pull them. You have 20 MS in total or per channel?</SPAN><BR /><BR /><SPAN>Just write the data to the RAM to excange to the M0 App and in a Pause (or any time, but you seem to have enough time anyway) send the data via USB.</SPAN><BR /></BODY></HTML> Wed, 15 Jun 2016 18:59:16 GMT https://community.nxp.com/t5/LPC-Microcontrollers/HSADC-data-acquisition/m-p/573734#M18884 lpcware 2016-06-15T18:59:16Z