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nrf: add ReadTemperature method

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Similar to the rp2040, the nrf has an on-board temperature sensor.

The main reason why I added this function was to show how this new API
is more general and can be used on multiple chips.
This commit is contained in:
Ayke van Laethem
2022-09-18 23:13:15 +02:00
committed by Ron Evans
parent 70b3ece6ec
commit a68f7e4ce3
1 changed files with 11 additions and 0 deletions
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src/machine/machine_nrf.go
+11
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@@ -372,3 +372,14 @@ func GetRNG() (ret uint32, err error) {
return ret, nil return ret, nil
} }
// ReadTemperature reads the silicon die temperature of the chip. The return
// value is in milli-celsius.
func ReadTemperature() int32 {
nrf.TEMP.TASKS_START.Set(1)
for nrf.TEMP.EVENTS_DATARDY.Get() == 0 {
}
temp := int32(nrf.TEMP.TEMP.Get()) * 250 // the returned value is in units of 0.25°C
nrf.TEMP.EVENTS_DATARDY.Set(0)
return temp
}