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add a variant based on the nrf52840-dk but with a RC clock.

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Because I was dumb and accidentally ran some code that configured gpio 0
as an output and that was enough to smoke the xtal that was preinstalled
between P0.0 and P0.1.
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geeksville
2020-04-24 12:30:06 -07:00
parent bebaa838c4
commit bb885a5110
5 changed files with 248 additions and 1 deletions
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docs/software/nrf52-TODO.md
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@@ -56,6 +56,7 @@ Needed to be fully functional at least at the same level of the ESP32 boards. At
Nice ideas worth considering someday...
- Currently we use Nordic's vendor ID, which is apparently okay: https://devzone.nordicsemi.com/f/nordic-q-a/44014/using-nordic-vid-and-pid-for-nrf52840 and I just picked a PID of 0x4403
- Use NRF logger module (includes flash logging etc...) instead of DEBUG_MSG
- Use "LED softblink" library on NRF52 to do nice pretty "breathing" LEDs. Don't whack LED from main thread anymore.
- decrease BLE xmit power "At 0dBm with the DC/DC on, the nRF52832 transmitter draws 5.3mA. Increasing the TX power to +4dBm adds only 2.2mA. Decreasing it to -40 dBm saves only 2.6mA."