57fd78f5ba
This commit removes the usage of all legacy FreeRTOS data types that are exposed via configENABLE_BACKWARD_COMPATIBILITY. Legacy types can still be used by enabling CONFIG_FREERTOS_ENABLE_BACKWARD_COMPATIBILITY. |
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| .. | ||
| main | ||
| CMakeLists.txt | ||
| README.md | ||
README.md
| Supported Targets | ESP32-S2 | ESP32-C3 |
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Temperature Sensor Example
The ESP32-S2 and ESP32-C3 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 or ESP32-C3 SoC (e.g., ESP32-S2-Saola-1, ESP32-S2-DevKitM-1, ESP32-C3-DevKitM-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 (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
Troubleshooting
For any technical queries, please open an issue on GitHub. We will get back to you soon.