The major rev from 19.x to 20.x breaks Radiolab, so pin it for now. This should fix the failing wio-e5-mini_repeater builds.
ltoa is removed upstream, so it was replaced with snprintf. The p[] buffer is always 16 bytes. Copy/paste for why claude thinks this is fine below, but also if this is broken it wouldn't be new.
```
exp2 in [23, 30] (int_part = mantissa << (exp2 - 23)): this is where int_part can reach its true max, up to 2,147,483,520 — 10 digits. That's what the snprintf bound of 11 (10 digits + NUL) is sized for. But in this branch frac_part is never assigned anything other than its initial 0, so only *p++ = '0' runs for the fraction — 1 char, not 7.
exp2 in [0, 22] (int_part = mantissa >> (23 - exp2)): this is the only branch where frac_part can also be nonzero and enter the 7-digit loop. Here int_part < 2^23 by construction, so it's capped at 7 digits, never 10.
```
Today if a user builds firmware with an incorrect WiFi SSID or password,
they get a generic `WiFi disconnected.` error message.
Extend logging to descirbe the reason that WiFi was disconnected.
I gathered the updated logs for the 3 scenarios below.
```
WiFi: Attempting manual WiFi reconnect...
WiFi: WiFi disconnected (reason=ASSOC_LEAVE). Flagging for reconnect...
WiFi: WiFi disconnected (reason=4WAY_HANDSHAKE_TIMEOUT). Flagging for reconnect...
WiFi: WiFi disconnected (reason=4WAY_HANDSHAKE_TIMEOUT). Flagging for reconnect...
WiFi: WiFi disconnected (reason=4WAY_HANDSHAKE_TIMEOUT). Flagging for reconnect...
```
```
WiFi: WiFi disconnected (reason=NO_AP_FOUND). Flagging for reconnect...
```
```
WiFi: WiFi connected successfully!
WiFi: Got connection
```
One nRF52840 variant shared across both radios, picked per env: Duo runs
the LR1121, Uno the SX1262. Same PCB, only the radio and its DIO1 pin
change.
SuperIO adds the SH1107 OLED, GPS, buzzer and joystick. GPS is driven by
the 3-position mode switch (Mode 2 = on), polled live the way thinknode_m1
does it.
Five quick user-button presses power the unit off; a press wakes it back
on (arms the button as an nRF52 GPIO SENSE source before SYSTEMOFF).
Consolidates #2054 and andyshinn's shared-base/uno work, rebased on dev.
Co-authored-by: lbibass <ewdries02@gmail.com>
Co-authored-by: Andy Shinn <andys@andyshinn.as>
Payloads of 166 or 167 bytes previously passed the frame-sized bound
(MAX_CHANNEL_DATA_LENGTH = 167) but were rejected by sendGroupData
against MAX_GROUP_DATA_LENGTH (165), causing ERR_CODE_TABLE_FULL (retry
later) to be returned instead of ERR_CODE_ILLEGAL_ARG.
Fixes#3345
Kevin Le