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17a688749a
because we need to use %llu to print the timer count value, but nano printf doesn't known that format
56 lines
1.9 KiB
Markdown
56 lines
1.9 KiB
Markdown
| Supported Targets | ESP32 | ESP32-S2 | ESP32-S3 | ESP32-C3 | ESP32-C2 |
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| ----------------- | ----- | -------- | -------- | -------- | -------- |
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# Example: General Purpose Timer
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This example illustrates how to use gptimer APIs to generate periodic alarm events and how different alarm actions behave on events.
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## How to Use Example
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### Hardware Required
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* A development board with ESP SOC chip
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* A USB cable for Power supply and programming
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### Build and Flash
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Run `idf.py -p PORT flash monitor` to build, flash and monitor the project.
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(To exit the serial monitor, type ``Ctrl-]``.)
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See the [ESP-IDF Getting Started Guide](https://idf.espressif.com/) for all the steps to configure and use the ESP-IDF to build projects.
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## Example Output
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```
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I (0) cpu_start: Starting scheduler on APP CPU.
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I (326) example: Create timer handle
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I (326) example: Enable timer
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I (336) example: Start timer, stop it at alarm event
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I (1336) example: Timer stopped, count=1000002
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I (1336) example: Set count value
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I (1336) example: Get count value
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I (1346) example: Timer count value=100
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I (1346) example: Disable timer
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I (1346) example: Enable timer
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I (1356) example: Start timer, auto-reload at alarm event
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I (2356) example: Timer reloaded, count=2
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I (3356) example: Timer reloaded, count=2
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I (4356) example: Timer reloaded, count=2
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I (5356) example: Timer reloaded, count=2
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I (5356) example: Stop timer
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I (5356) example: Disable timer
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I (5356) example: Enable timer
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I (5366) example: Start timer, update alarm value dynamically
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I (6366) example: Timer alarmed, count=1000002
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I (7366) example: Timer alarmed, count=2000002
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I (8366) example: Timer alarmed, count=3000002
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I (9366) example: Timer alarmed, count=4000002
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I (9376) example: Stop timer
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I (9376) example: Disable timer
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I (9376) example: Delete timer
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```
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## Troubleshooting
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For any technical queries, please open an [issue](https://github.com/espressif/esp-idf/issues) on GitHub. We will get back to you soon.
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