samples: lora: receive: update SNR unit to dB #82451
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zephyrbot
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kartben,
Mani-Sadhasivam,
martinjaeger,
mniestroj and
nashif
Ya, that can be confusing. I'll try to take care of this |
martinjaeger
previously approved these changes
Dec 3, 2024
kartben
requested changes
Dec 3, 2024
kartben
reviewed
Dec 3, 2024
| @@ -28,8 +28,8 @@ void lora_receive_cb(const struct device *dev, uint8_t *data, uint16_t size, | |||
| ARG_UNUSED(dev); | |||
| ARG_UNUSED(size); | |||
|
|
|||
| LOG_INF("Received data: %s (RSSI:%ddBm, SNR:%ddBm)", | |||
| data, rssi, snr); | |||
| LOG_INF("LoRa RX RSSI: %ddBm, SNR: %ddB", rssi, snr); | |||
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nit: also, please add a space between number and unit as per SI rules.
|
updated log output (with the spaces between numbers and units) .. code-block:: console
[00:00:00.235,000] <inf> lora_receive: Synchronous reception
[00:00:00.956,000] <inf> lora_receive: LoRa RX RSSI: -60dBm, SNR: 7dB
[00:00:00.956,000] <inf> lora_receive: LoRa RX payload
68 65 6c 6c 6f 77 6f 72 6c 64 |hellowor ld
[00:00:02.249,000] <inf> lora_receive: LoRa RX RSSI: -57dBm, SNR: 9dB
[00:00:02.249,000] <inf> lora_receive: LoRa RX payload
68 65 6c 6c 6f 77 6f 72 6c 64 |hellowor ld
[00:00:03.541,000] <inf> lora_receive: LoRa RX RSSI: -57dBm, SNR: 9dB
[00:00:03.541,000] <inf> lora_receive: LoRa RX payload
68 65 6c 6c 6f 77 6f 72 6c 64 |hellowor ld
[00:00:04.834,000] <inf> lora_receive: LoRa RX RSSI: -55dBm, SNR: 9dB
[00:00:04.834,000] <inf> lora_receive: LoRa RX payload
68 65 6c 6c 6f 77 6f 72 6c 64 |hellowor ld
[00:00:04.834,000] <inf> lora_receive: Asynchronous reception
[00:00:06.127,000] <inf> lora_receive: LoRa RX RSSI: -55dBm, SNR: 9dB
[00:00:06.127,000] <inf> lora_receive: LoRa RX payload
68 65 6c 6c 6f 77 6f 72 6c 64 |hellowor ld
[00:00:07.419,000] <inf> lora_receive: LoRa RX RSSI: -55dBm, SNR: 9dB
[00:00:07.419,000] <inf> lora_receive: LoRa RX payload
68 65 6c 6c 6f 77 6f 72 6c 64 |hellowor ld
[00:00:08.712,000] <inf> lora_receive: LoRa RX RSSI: -55dBm, SNR: 9dB
[00:00:08.712,000] <inf> lora_receive: LoRa RX payload
68 65 6c 6c 6f 77 6f 72 6c 64 |hellowor ld
[00:00:10.004,000] <inf> lora_receive: LoRa RX RSSI: -55dBm, SNR: 9dB
[00:00:10.004,000] <inf> lora_receive: LoRa RX payload
68 65 6c 6c 6f 77 6f 72 6c 64 |hellowor ld
[00:00:11.297,000] <inf> lora_receive: LoRa RX RSSI: -55dBm, SNR: 9dB
[00:00:11.297,000] <inf> lora_receive: LoRa RX payload
68 65 6c 6c 6f 77 6f 72 6c 64 |hellowor ld
[00:00:12.590,000] <inf> lora_receive: LoRa RX RSSI: -55dBm, SNR: 9dB
[00:00:12.590,000] <inf> lora_receive: LoRa RX payload
68 65 6c 6c 6f 77 6f 72 6c 64 |hellowor ld
[00:00:13.884,000] <inf> lora_receive: LoRa RX RSSI: -55dBm, SNR: 9dB
[00:00:13.884,000] <inf> lora_receive: LoRa RX payload
68 65 6c 6c 6f 77 6f 72 6c 64 |hellowor ld
[00:00:15.177,000] <inf> lora_receive: LoRa RX RSSI: -55dBm, SNR: 9dB
[00:00:15.177,000] <inf> lora_receive: LoRa RX payload
68 65 6c 6c 6f 77 6f 72 6c 64 |hellowor ld
[00:00:16.470,000] <inf> lora_receive: LoRa RX RSSI: -55dBm, SNR: 9dB
[00:00:16.470,000] <inf> lora_receive: LoRa RX payload
68 65 6c 6c 6f 77 6f 72 6c 64 |hellowor ld
[00:00:17.762,000] <inf> lora_receive: LoRa RX RSSI: -55dBm, SNR: 9dB
[00:00:17.762,000] <inf> lora_receive: LoRa RX payload
68 65 6c 6c 6f 77 6f 72 6c 64 |hellowor ld
[00:00:17.762,000] <inf> lora_receive: Stopping packet receptions |
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kartben
previously approved these changes
Dec 3, 2024
Signal-to-noise ratio is a unitless quantity, so its unit is dB, not dBm (dBm is the power relative to 1 milliwatt). At the same time output the received payload using `LOG_HEXDUMP_INF`, instead of limiting the sample solely to string payloads. Fixes zephyrproject-rtos#82414 Signed-off-by: Jordan Yates <[email protected]>
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kartben
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mniestroj
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Signal-to-noise ratio is a unitless quantity, so its unit is dB, not dBm (dBm is the power relative to 1 milliwatt). At the same time output the received payload using
LOG_HEXDUMP_INF, instead of limiting the sample solely to string payloads.Fixes #82414
Ideally this would also update the README sample output, but I no longer have access to any hardware with a LoRa modem to regenerate it.