NRF51822 CURRENT is anormal

RE: NRF51822 CURRENT is anormal

Ole Bauck — Tue, 24 Jan 2017 10:31:30 GMT

Is the current draw stable or does it change if you for example touch the chip with your finger. If it changes it may indicate that something is floating.

If you look at the current draw using a power analyzer or an oscilloscope, is it constantly 1.9mA or 300uA, or does it change over time?

RE: NRF51822 CURRENT is anormal

zcmm — Fri, 20 Jan 2017 01:04:55 GMT

No,Even if the electricity again, the problem still exists

RE: NRF51822 CURRENT is anormal

Ole Bauck — Thu, 19 Jan 2017 12:11:24 GMT

Most of the code will run as normal in debug mode, so that your code is advertising does not mean it is not in debug mode. If you power cycle the chip does the problem disappear?

RE: NRF51822 CURRENT is anormal

zcmm — Thu, 19 Jan 2017 04:29:26 GMT

i use the 680R pulldown.if it is entering debug mode,the device should not advtise.

RE: NRF51822 CURRENT is anormal

Roger Clark — Thu, 19 Jan 2017 03:56:33 GMT

Sounds like you board is entering debug mode.

Do you have a pull-down resistor on the SWCLK pin ?

Note. I think this issue was supposed to be fixed in newer versions of nRF51822 but most people prefer to still add the 10k pulldown to their circuit, just in case.