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49 lines
2.0 KiB
Markdown
49 lines
2.0 KiB
Markdown
# MT76 testmode utility
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This utility can be used to perform some support functions required for Rx/Tx calibration, similar to the ATE command set of the SDK driver.
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Its main functionality is setting test parameters and dumping statistics. It can also be used to prepare modified EEPROM data for writing into flash.
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## Basic syntax
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- Set parameters:
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- `mt76-test phy0 set <parameter>=<value>`[...]
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- Show current parameter set:
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- `mt76-test phy0 dump`
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- Show statistics
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- `mt76-test phy0 dump stats`
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## Running tests
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The test state is controlled through the `state` parameter. The following state values are supported:
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- `off`: Normal operation (default)
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- `idle`: Testmode enabled, but no specific test active
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- `tx_frames`: Send a number of packets with configurable rate/txpower
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- `rx_frames`: Receive packets and show RSSI and packet count/PER
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Setting a state activates it even if the value is the same as before. Setting it to `tx_frames` triggers sending packets immediately. Setting `rx_frames` enables receive mode and can also be used to clear rx statistics.
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## Notes
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To run tests, you first need to disable all normal interfaces, set up a monitor mode interface and configure it to the channel/bandwidth you intend to use.
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## Parameters:
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| Parameter name | ATE parameter | Description |
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|--|--|--|
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| `state` | `ATE` | Test state |
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| `tx_count` | `ATETXCNT` | Number of packets to send |
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| `tx_length` | `ATETXLEN` | Length of packets to send |
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| `tx_rate_mode` | `ATETXMODE` | PHY mode (possible values: `cck`, `ofdm`, `ht`, `vht`) |
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| `tx_rate_nss` | | Number of spatial streams (VHT only) |
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| `tx_rate_idx` | `ATETXMCS` | MCS or legacy rate index |
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| `tx_rate_sgi` | `ATETXGI` | Enable short guard interval |
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| `tx_rate_ldpc` | `ATETXLDPC` | Enable LDPC |
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| `tx_power_control` | `ATETXPOWERCTRL` | Firmware transmit power control feature |
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| `tx_power` | `ATETXPOW0-3` | Per-chain half-dBm transmit power, `0` means default value, e.g. `10,0,0,0` |
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| `tx_antenna` | `ATETXANT` | Transmit antenna bitmask |
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| `freq_offset` | `ATETXFREQOFFSET` | Frequency offset |
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