topic Re: unable peripherics on the LPC433X-Xplorer in LPC Microcontrollers

unable peripherics on the LPC433X-Xplorer

lpcware — Wed, 15 Jun 2016 18:44:26 GMT

Content originally posted in LPCWare by floreste on Fri Jul 04 02:21:13 MST 2014
Hello,
I am working with a LPC4337-Xplorer board and want to shut down every peripherics to evaluate the power consumption of the cores only.
But I did not succeed in unabling the ethernet for example which is automatically powered on.
So can I unabled the peripherics by software (mostly the ethernet and the codec) and how do I do this?
(I've already tryed to reset via the GPIO0[4] and to use the Chip_ENET_DeInit function, but neither works)

Thank you for your answers

Re: unable peripherics on the LPC433X-Xplorer

lpcware — Wed, 15 Jun 2016 18:44:27 GMT

Content originally posted in LPCWare by bavarian on Fri Jul 04 07:27:17 MST 2014
Disabling a peripheral device is not really possible. There might be a standby or power save mode for the Ethernet PHY or the audio CODEC which you can set by software, but they will not be switched off.
If you really need to evaluate the power consumption of the LPC4300 in detail, then you need to use another board which offers this feature.
Or you disassemble the PHY and the CODEC 8-)

Regards,
NXP Support Team

Re: unable peripherics on the LPC433X-Xplorer

lpcware — Wed, 15 Jun 2016 18:44:27 GMT

Content originally posted in LPCWare by floreste on Mon Jul 07 00:55:14 MST 2014
Thank you for your answer,
though, do you have an idea how to put peripherics in power save mode?
Also, which other board could suit better my plan to evaluate only the LPC consumption?

Regards,
Floreste

Re: unable peripherics on the LPC433X-Xplorer

lpcware — Wed, 15 Jun 2016 18:44:28 GMT

Content originally posted in LPCWare by bavarian on Mon Jul 07 03:53:25 MST 2014
Hello Floreste,

the MCB4357 board provides dedicated jumpers in the power supply signals VDDIO / VDDREG / VDDA of the LPC4357. This allows you to measure each of these currents with a shunt and a multimeter, e.g. using an integrator circuit (simple RC circuit). This board is fully supported in our software packages in LPCOpen. However, it#s not really a cheap board.

http://www.keil.com/mcb4300/

There is an LPC4357 board from Embedded Artists which is pretty good, but not actively supported by our LPCOpen package.

http://www.embeddedartists.com/

There are several other boards where I didn't check if power measurements on the LPC core have been foreseen or not:

For example: element14 (Farnell), WaveShare (Chinese company), Diolan (Israel)

Regards,
NXP Support Team.

Re: unable peripherics on the LPC433X-Xplorer

lpcware — Wed, 15 Jun 2016 18:44:29 GMT

Content originally posted in LPCWare by andersrosvall on Mon Jul 07 14:04:22 MST 2014
Hi,
There is in fact a port for LPCOpen v2.12 for our LPC4357 OEM board / Developer's Kit (http://www.embeddedartists.com/products/kits/lpc4357_kit.php).
It can be downloaded from our support site after purchase.

Kind Regards,
Embedded Artists Team