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Merge branch 'bugfix/async_crc_timeout' into 'master'

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fix(async_crc): limit blocking timeout support

See merge request espressif/esp-idf!49226
This commit is contained in:
morris
2026-06-03 18:59:44 +08:00
parent ce76bb9a4d c49a6ed454
commit e892e09d6c
5 changed files with 21 additions and 33 deletions
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docs/en/api-reference/peripherals/async_crc.rst
+4 -6
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@@ -100,6 +100,7 @@ First, you need to install the Async CRC driver. The driver supports both AHB-GD
When creating a driver instance, you need to configure:
- **backlog**: Maximum number of pending CRC requests that can be queued. Higher values use more memory but provide better throughput for bursty workloads.
- **intr_priority**: DMA interrupt priority. Set to ``0`` to use the default low/medium priority, or set a non-zero value to request a specific interrupt priority.
- **dma_burst_size**: DMA transfer burst size in bytes.
The driver handle ``crc_hdl`` is an opaque pointer that you use for all subsequent operations.
@@ -161,15 +162,12 @@ For simpler use cases or when async operations are not required, use the blockin
const char *data = "Hello, World!";
size_t data_len = strlen(data);
// Blocking CRC with 1000ms timeout
ESP_ERROR_CHECK(esp_crc_calc_blocking(crc_hdl, data, data_len, &params, 1000, &crc_result));
// Blocking CRC, wait indefinitely
ESP_ERROR_CHECK(esp_crc_calc_blocking(crc_hdl, data, data_len, &params, -1, &crc_result));
printf("CRC result: 0x%08X\n", crc_result);
The blocking API supports:
- **timeout_ms >= 0**: Wait for specified milliseconds
- **timeout_ms < 0**: Wait indefinitely
The blocking API only supports ``timeout_ms = -1``, which means waiting indefinitely until the CRC calculation completes.
Uninstalling the Driver
------------------------