47 lines
1.7 KiB
Markdown
47 lines
1.7 KiB
Markdown
# Notes
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* using esp-idf v5.5.1 for testin
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## Wireshark
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* filter for finding these adverts by mac is `btle.advertising_address == xx:xx:xx:xx:xx || btle.scanning_address == xx:xx:xx:xx:xx || btle.target_address == xx:xx:xx:xx:xx`
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* filter for narrowing to without mac is `(btcommon.eir_ad.entry.type == 0x01) && (btle.advertising_header == 0x2506)`
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## Voltage reading
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1. 2x 200k resistor
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1. bat\+ -> adc0
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2. bat\- -> adc0
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2. [adc oneshot read esp-idf](https://github.com/espressif/esp-idf/tree/v5.5.1/examples/peripherals/adc/oneshot_read)
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3. [battery usage Xiao C6](https://wiki.seeedstudio.com/xiao_esp32c6_getting_started/#battery-usage)
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4. [battery usage Xiao C3](https://wiki.seeedstudio.com/XIAO_ESP32C3_Getting_Started/#battery-usage)
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* max usable interval 4000ms seems like
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* 2000ms seems moar stable? idk
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# Scratch
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## test protocol
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rebuildfull
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erase flash
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set setgings
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flash
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plug into usb-c meter
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measure power usage over 10 minutes (600 seconds)
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export to excel
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name like:
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(progress markers: b built, f flashed, m measuring, l logged, d done)
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bfmld burst-60s-200ms-10ms-3b-nousb-ant-109f09e-
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bfmld normal-10.230s-10ms-nousb-ant-109f09e-
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bfmld normal-10.230s-10ms-nousb-noant-109f09e-
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bfm burst-60s-200ms-10ms-3b-nousb-noant-109f09e-
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next
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burst-120s-40ms-0ms-4b-nousb-noant-2975c2c-
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get values with (EXCEL paste into cell D1)
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<table border="1">
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<tr>
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<th>avg V</th>
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<th>avg A</th>
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<th>avg W</th>
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<th>avg mW</th>
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</tr>
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<tr>
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<td>=AVERAGE(B1:B1000)</td>
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<td>=AVERAGE(C1:C1000)</td>
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<td>=D2*E2</td>
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<td>=F2*1000</td>
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</tr>
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</table> |