2.4 KiB
| Supported Targets | ESP32-S2 | ESP32-C3 | ESP32-S3 |
|---|
Temperature Sensor Example
The ESP32-S2/C3/S3 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 |
How to use example
Before project configuration and build, be sure to set the correct chip target using idf.py set-target <chip_name>.
Hardware Required
- A development board with ESP32-S2/C3/S3 SoC (e.g., ESP32-S2-Saola-1, ESP32-S2-DevKitM-1, ESP32-C3-DevKitM-1, ESP32-S3-WROOM-1, etc.)
- A USB cable for power supply and programming
Build and Flash
Build the project and flash it to the board, then run monitor tool to view serial output:
Run idf.py -p PORT flash monitor to build, flash and monitor the project.
(To exit the serial monitor, type Ctrl-].)
See the Getting Started Guide for full steps to configure and use ESP-IDF to build projects.
Example Output
I (276) example: Initializing Temperature sensor
I (276) temperature_sensor: temperature range [-10°C ~ 80°C], error < 1°C
I (286) example: Temperature sensor started
I (1286) example: Temperature out celsius 21.64
I (2286) example: Temperature out celsius 21.64
I (3286) example: Temperature out celsius 21.64
I (4286) example: Temperature out celsius 22.08
I (5286) example: Temperature out celsius 22.08
I (6286) example: Temperature out celsius 22.08
I (7286) example: Temperature out celsius 22.08
I (8286) example: Temperature out celsius 22.08
I (9286) example: Temperature out celsius 22.08
Troubleshooting
For any technical queries, please open an issue on GitHub. We will get back to you soon.