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docs: fix broken and misaligned tables

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Sefinek
2026-05-28 15:15:47 +02:00
parent 888ad4589c
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docs/nrf52_power_management.md
+50 -48
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@@ -24,36 +24,37 @@ The nRF52 Power Management module provides battery protection features to preven
### Shutdown Reason Tracking
Shutdown reason codes (stored in GPREGRET2):
| Code | Name | Description |
|------|------|-------------|
| 0x00 | NONE | Normal boot / no previous shutdown |
| 0x4C | LOW_VOLTAGE | Runtime low voltage threshold reached |
| 0x55 | USER | User requested powerOff() |
| 0x42 | BOOT_PROTECT | Boot voltage protection triggered |
| Code | Name | Description |
|------|--------------|---------------------------------------|
| 0x00 | NONE | Normal boot / no previous shutdown |
| 0x4C | LOW_VOLTAGE | Runtime low voltage threshold reached |
| 0x55 | USER | User requested powerOff() |
| 0x42 | BOOT_PROTECT | Boot voltage protection triggered |
## Supported Boards
| Board | Implemented | LPCOMP wake | VBUS wake |
|-------|-------------|-------------|-----------|
| Seeed Studio XIAO nRF52840 (`xiao_nrf52`) | Yes | Yes | Yes |
| RAK4631 (`rak4631`) | Yes | Yes | Yes |
| Heltec T114 (`heltec_t114`) | Yes | Yes | Yes |
| GAT562 Mesh Watch13 | Yes | Yes | Yes |
| Promicro nRF52840 | No | No | No |
| RAK WisMesh Tag | No | No | No |
| Heltec Mesh Solar | No | No | No |
| LilyGo T-Echo / T-Echo Lite | No | No | No |
| SenseCAP Solar | Yes | Yes | Yes |
| WIO Tracker L1 / L1 E-Ink | No | No | No |
| WIO WM1110 | No | No | No |
| Mesh Pocket | No | No | No |
| Nano G2 Ultra | No | No | No |
| ThinkNode M1/M3/M6 | No | No | No |
| T1000-E | No | No | No |
| Ikoka Nano/Stick/Handheld (nRF) | No | No | No |
| Keepteen LT1 | No | No | No |
| Minewsemi ME25LS01 | No | No | No |
| Board | Implemented | LPCOMP wake | VBUS wake |
|-------------------------------------------|-------------|-------------|-----------|
| Seeed Studio XIAO nRF52840 (`xiao_nrf52`) | Yes | Yes | Yes |
| RAK4631 (`rak4631`) | Yes | Yes | Yes |
| Heltec T114 (`heltec_t114`) | Yes | Yes | Yes |
| GAT562 Mesh Watch13 | Yes | Yes | Yes |
| Promicro nRF52840 | No | No | No |
| RAK WisMesh Tag | No | No | No |
| Heltec Mesh Solar | No | No | No |
| LilyGo T-Echo / T-Echo Lite | No | No | No |
| SenseCAP Solar | Yes | Yes | Yes |
| WIO Tracker L1 / L1 E-Ink | No | No | No |
| WIO WM1110 | No | No | No |
| Mesh Pocket | No | No | No |
| Nano G2 Ultra | No | No | No |
| ThinkNode M1/M3/M6 | No | No | No |
| T1000-E | No | No | No |
| Ikoka Nano/Stick/Handheld (nRF) | No | No | No |
| Keepteen LT1 | No | No | No |
| Minewsemi ME25LS01 | No | No | No |
Notes:
- "Implemented" reflects Phase 1 (boot lockout + shutdown reason capture).
@@ -143,24 +144,25 @@ The LPCOMP (Low Power Comparator) is configured to:
VBUS wake is enabled via the POWER peripheral USBDETECTED event whenever `configureVoltageWake()` is used. This requires USB VBUS to be routed to the nRF52 (typical on nRF52840 boards with native USB).
**LPCOMP Reference Selection (PWRMGT_LPCOMP_REFSEL)**:
| REFSEL | Fraction | VBAT @ 1M/1M divider (VDD=3.0-3.3) | VBAT @ 1.5M/1M divider (VDD=3.0-3.3) |
|--------|----------|------------------------------------|--------------------------------------|
| 0 | 1/8 | 0.75-0.82 V | 0.94-1.03 V |
| 1 | 2/8 | 1.50-1.65 V | 1.88-2.06 V |
| 2 | 3/8 | 2.25-2.47 V | 2.81-3.09 V |
| 3 | 4/8 | 3.00-3.30 V | 3.75-4.12 V |
| 4 | 5/8 | 3.75-4.12 V | 4.69-5.16 V |
| 5 | 6/8 | 4.50-4.95 V | 5.62-6.19 V |
| 6 | 7/8 | 5.25-5.77 V | 6.56-7.22 V |
| 7 | ARef | - | - |
| 8 | 1/16 | 0.38-0.41 V | 0.47-0.52 V |
| 9 | 3/16 | 1.12-1.24 V | 1.41-1.55 V |
| 10 | 5/16 | 1.88-2.06 V | 2.34-2.58 V |
| 11 | 7/16 | 2.62-2.89 V | 3.28-3.61 V |
| 12 | 9/16 | 3.38-3.71 V | 4.22-4.64 V |
| 13 | 11/16 | 4.12-4.54 V | 5.16-5.67 V |
| 14 | 13/16 | 4.88-5.36 V | 6.09-6.70 V |
| 15 | 15/16 | 5.62-6.19 V | 7.03-7.73 V |
| 0 | 1/8 | 0.75-0.82 V | 0.94-1.03 V |
| 1 | 2/8 | 1.50-1.65 V | 1.88-2.06 V |
| 2 | 3/8 | 2.25-2.47 V | 2.81-3.09 V |
| 3 | 4/8 | 3.00-3.30 V | 3.75-4.12 V |
| 4 | 5/8 | 3.75-4.12 V | 4.69-5.16 V |
| 5 | 6/8 | 4.50-4.95 V | 5.62-6.19 V |
| 6 | 7/8 | 5.25-5.77 V | 6.56-7.22 V |
| 7 | ARef | - | - |
| 8 | 1/16 | 0.38-0.41 V | 0.47-0.52 V |
| 9 | 3/16 | 1.12-1.24 V | 1.41-1.55 V |
| 10 | 5/16 | 1.88-2.06 V | 2.34-2.58 V |
| 11 | 7/16 | 2.62-2.89 V | 3.28-3.61 V |
| 12 | 9/16 | 3.38-3.71 V | 4.22-4.64 V |
| 13 | 11/16 | 4.12-4.54 V | 5.16-5.67 V |
| 14 | 13/16 | 4.88-5.36 V | 6.09-6.70 V |
| 15 | 15/16 | 5.62-6.19 V | 7.03-7.73 V |
**Important**: For boards with a voltage divider on the battery sense pin, LPCOMP measures the divided voltage. Use:
`VBAT_threshold ≈ (VDD * fraction) * divider_scale`, where `divider_scale = (Rtop + Rbottom) / Rbottom` (e.g., 2.0 for 1M/1M, 2.5 for 1.5M/1M, 3.0 for XIAO).
@@ -177,12 +179,12 @@ This ensures compatibility regardless of BLE stack state.
Power management status can be queried via the CLI:
| Command | Description |
|---------|-------------|
| `get pwrmgt.support` | Returns "supported" or "unsupported" |
| `get pwrmgt.source` | Returns current power source - "battery" or "external" (5V/USB power) |
| `get pwrmgt.bootreason` | Returns reset and shutdown reason strings |
| `get pwrmgt.bootmv` | Returns boot voltage in millivolts |
| Command | Description |
|-------------------------|-----------------------------------------------------------------------|
| `get pwrmgt.support` | Returns "supported" or "unsupported" |
| `get pwrmgt.source` | Returns current power source - "battery" or "external" (5V/USB power) |
| `get pwrmgt.bootreason` | Returns reset and shutdown reason strings |
| `get pwrmgt.bootmv` | Returns boot voltage in millivolts |
On boards without power management enabled, all commands except `get pwrmgt.support` return:
```