ad15109daa
Currently, several examples do not explicitly state their component dependencies, relying instead on the default behavior that includes all registered components and commonly required ones in the build. Explicitly adding component dependencies can reduce build time when set(COMPONENTS main) is used. Signed-off-by: Frantisek Hrbata <frantisek.hrbata@espressif.com>
| Supported Targets | ESP32-C2 | ESP32-C3 | ESP32-C5 | ESP32-C6 | ESP32-C61 | ESP32-H2 | ESP32-P4 | ESP32-S2 | ESP32-S3 |
|---|
Temperature Sensor Example
The ESP32-S2/C3/S3/C2 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/C2 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 (0) cpu_start: Starting scheduler on APP CPU.
I (303) example: Install temperature sensor, expected temp ranger range: 10~50 ℃
I (303) temperature_sensor: Range [-10°C ~ 80°C], error < 1°C
I (313) example: Enable temperature sensor
I (323) example: Read temperature
I (323) example: Temperature value 26.06 ℃
I (1323) example: Temperature value 26.06 ℃
I (2323) example: Temperature value 26.06 ℃
I (3323) example: Temperature value 26.06 ℃
I (4323) example: Temperature value 26.06 ℃
I (5323) example: Temperature value 26.49 ℃
Troubleshooting
For any technical queries, please open an issue on GitHub. We will get back to you soon.