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chendejin
69 lines
2.6 KiB
Markdown
69 lines
2.6 KiB
Markdown
# Intermittently Connected Device (ICD)
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This example creates a Matter ICD device using the ESP Matter data model. Currently it is available for ESP32-H2 and ESP32-C6.
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See the [docs](https://docs.espressif.com/projects/esp-matter/en/latest/esp32/developing.html) for more information about building and flashing the firmware.
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**Note**: Please use IDF v5.2.2 or later for this example.
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## 1. Additional Environment Setup
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No additional setup is required.
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## 2. Post Commissioning Setup
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No additional setup is required.
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## 3. ICD configuration options
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The device is configured as a Short Idle Time(SIT) ICD with the following parameters by the default sdkconfig files.
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| Parameter | Value |
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|---------------------------|--------|
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| ICD Fast Polling Interval | 500ms |
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| ICD Slow Polling Interval | 5000ms |
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| ICD Active Mode Duration | 1000ms |
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| ICD Idle Mode Duration | 60s |
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| ICD Active Mode Threshold | 1000ms |
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It can also be configured as a Long Idle Time(LIT) ICD with the following parameters by the sdkconfig files `sdkconfig.defaults.esp32h2.lit` or `sdkconfig.defaults.esp32c6.lit`.
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| Parameter | Value |
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|---------------------------|---------|
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| ICD Fast Polling Interval | 500ms |
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| ICD Slow Polling Interval | 20000ms |
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| ICD Active Mode Duration | 1000ms |
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| ICD Idle Mode Duration | 600s |
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| ICD Active Mode Threshold | 5000ms |
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- ESP32-H2:
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```
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idf.py -D SDKCONFIG_DEFAULTS="sdkconfig.defaults.esp32h2.lit" set-target esp32h2 build
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```
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- ESP32-C6:
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```
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idf.py -D SDKCONFIG_DEFAULTS="sdkconfig.defaults.esp32c6.lit" set-target esp32c6 build
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```
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**Note**: According to the Matter 1.4 specification, "A LIT ICD SHALL operate as a SIT ICD if it doesn’t have at least one registration with any client on any fabric in the ICD Management cluster." In such case, a LIT ICD shall not set its Slow Polling Interval higher than the maximum allowed for a SIT ICD.
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## 4. Power usage
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The power usage will be various for different configuration parameters of ICD server.
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Below are example current wave figures for ESP32-H2 Devkit-C and ESP32-C6 Devkit-C under the default SIT or LIT configurations. The ICD configurations are listed in the two tables above.
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Note that all the current wave figures are measured with 20dBm radio TX power.
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Current Wave Figure for ESP32-H2(SIT):
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Current Wave Figure for ESP32-C6(SIT):
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Current Wave Figure for ESP32-H2(LIT):
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Current Wave Figure for ESP32-C6(LIT):
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