mirror of
https://github.com/espressif/esp-idf.git
synced 2025-11-04 00:51:42 +01:00
27 lines
1.3 KiB
Markdown
27 lines
1.3 KiB
Markdown
|
# ESP32-S2 Temperature Sensor Example
|
||
|
|
|
||
|
|
The ESP32-S2 has a built-in temperature sensor. The temperature sensor module contains an 8-bit Sigma-Delta ADC and a temperature offset DAC.
|
||
|
|
|
||
|
|
The conversion relationship is the first two columns of the table below. Among them, `offset = 0`(default) is the main measurement option, and other values are extended measurement options.
|
||
|
|
|
||
|
|
DAC level | offset | measure range(℃) | measure error(℃)
|
||
|
|
:-: | :-: | :-: | :-:
|
||
|
|
0 | -2 | 50 ~ 125 | < 3
|
||
|
|
1 | -1 | 20 ~ 100 | < 2
|
||
|
|
2 | 0 | -10 ~ 80 | < 1
|
||
|
|
3 | 1 | -30 ~ 50 | < 2
|
||
|
|
4 | 2 | -40 ~ 20 | < 3
|
||
|
|
|
||
|
|
* Log output :
|
||
|
|
|
||
|
|
```
|
||
|
|
I (243) TempSensor: Initializing Temperature sensor
|
||
|
|
I (243) TempSensor: default dac 2, clk_div 6
|
||
|
|
I (243) TempSensor: Config temperature range [-10°C ~ 80°C], error < 1°C
|
||
|
|
I (253) TempSensor: Temperature sensor started
|
||
|
|
I (1253) TempSensor: Temperature out celsius 27.287399°C
|
||
|
|
I (2253) TempSensor: Temperature out celsius 26.848801°C
|
||
|
|
I (3253) TempSensor: Temperature out celsius 26.848801°C
|
||
|
|
I (4253) TempSensor: Temperature out celsius 27.287399°C
|
||
|
|
I (5253) TempSensor: Temperature out celsius 27.287399°C
|
||
|
|
```
|