3 ms·
At least in the case of Purism’s Librem 5 (unreleased), it’s not a disable pin, it’s removing power entirely from the wifi peripheral. Which is a step up for su
by cmrx64 8y ago
At least in the case of Purism’s Librem 5 (unreleased), it’s not a disable pin, it’s removing power entirely from the wifi peripheral. Which is a step up for sure.
- btashton 8y agoIf it is the same as the laptop they are using the W_DISABLE pin not power.
- cmrx64 8y agoYeah, according to the devkit schematics the switch controls W_DISABLE- their blog post talks about the virtues of "removing power"...
- Scoundreller 8y agoThat may not work for low power electronics: they can gather enough power to operate from I/O lines that have pull-up resistors on them. When this goes really wrong, the chip can burn out. Some satellite provider in the past tried to exploit differences between genuine cards and fake cards based on Atmel 8515 simulator boards. The fix was to lift the VCC pin of the 8515.