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keep lora radio totally unpowered when in deep-sleep

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Kevin Hester 2020-10-07 17:52:44 +08:00
parent c0c83ad389
commit b47c54b5b6
2 changed files with 6 additions and 7 deletions
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2
docs/software/gps-todo.txt
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@ -10,8 +10,6 @@ ublox parsing failure
record power measurements and update spreadsheet record power measurements and update spreadsheet
make sure we are turning off lora radio in deep sleep
have loop methods return allowable sleep time (from their perspective) have loop methods return allowable sleep time (from their perspective)
increase main cpu sleep time increase main cpu sleep time

11
src/sleep.cpp
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@ -170,17 +170,18 @@ void doDeepSleep(uint64_t msecToWake)
#ifdef TBEAM_V10 #ifdef TBEAM_V10
if (axp192_found) { if (axp192_found) {
// Obsolete comment: from back when we we used to receive lora packets while CPU was in deep sleep.
// We no longer do that, because our light-sleep current draws are low enough and it provides fast start/low cost
// wake. We currently use deep sleep only for 'we want our device to actually be off - because our battery is
// critically low'. So in deep sleep we DO shut down power to LORA (and when we boot later we completely reinit it)
//
// No need to turn this off if the power draw in sleep mode really is just 0.2uA and turning it off would // No need to turn this off if the power draw in sleep mode really is just 0.2uA and turning it off would
// leave floating input for the IRQ line // leave floating input for the IRQ line
// If we want to leave the radio receving in would be 11.5mA current draw, but most of the time it is just waiting // If we want to leave the radio receving in would be 11.5mA current draw, but most of the time it is just waiting
// in its sequencer (true?) so the average power draw should be much lower even if we were listinging for packets // in its sequencer (true?) so the average power draw should be much lower even if we were listinging for packets
// all the time. // all the time.
// axp.setPowerOutPut(AXP192_LDO2, AXP202_OFF); // LORA radio axp.setPowerOutPut(AXP192_LDO2, AXP202_OFF); // LORA radio
// now done by UBloxGPS.cpp
// setGPSPower(false);
} }
#endif #endif