michaelh/zephyr
1
0
Fork 0
Code Releases Activity

samples: lora: receive: update SNR unit to dB

Browse source 
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

Signed-off-by: Jordan Yates <jordan@embeint.com>
This commit is contained in:
Jordan Yates 2024-12-03 08:09:30 +10:00 • committed by Anas Nashif
commit 422d612cdc
2 changed files with 49 additions and 21 deletions
Download patch file Download diff file Expand all files Collapse all files

62
samples/drivers/lora/receive/README.rst
View file

@ -36,20 +36,48 @@ Sample Output
.. code-block:: console
[00:00:00.235,000] <inf> lora_receive: Synchronous reception
[00:00:00.956,000] <inf> lora_receive: Received data: helloworld (RSSI:-60dBm, SNR:7dBm)
[00:00:02.249,000] <inf> lora_receive: Received data: helloworld (RSSI:-57dBm, SNR:9dBm)
[00:00:03.541,000] <inf> lora_receive: Received data: helloworld (RSSI:-57dBm, SNR:9dBm)
[00:00:04.834,000] <inf> lora_receive: Received data: helloworld (RSSI:-55dBm, SNR:9dBm)
[00:00:04.834,000] <inf> lora_receive: Asynchronous reception
[00:00:06.127,000] <inf> lora_receive: Received data: helloworld (RSSI:-55dBm, SNR:9dBm)
[00:00:07.419,000] <inf> lora_receive: Received data: helloworld (RSSI:-55dBm, SNR:9dBm)
[00:00:08.712,000] <inf> lora_receive: Received data: helloworld (RSSI:-55dBm, SNR:9dBm)
[00:00:10.004,000] <inf> lora_receive: Received data: helloworld (RSSI:-55dBm, SNR:9dBm)
[00:00:11.297,000] <inf> lora_receive: Received data: helloworld (RSSI:-55dBm, SNR:9dBm)
[00:00:12.590,000] <inf> lora_receive: Received data: helloworld (RSSI:-55dBm, SNR:9dBm)
[00:00:13.884,000] <inf> lora_receive: Received data: helloworld (RSSI:-55dBm, SNR:9dBm)
[00:00:15.177,000] <inf> lora_receive: Received data: helloworld (RSSI:-55dBm, SNR:9dBm)
[00:00:16.470,000] <inf> lora_receive: Received data: helloworld (RSSI:-55dBm, SNR:9dBm)
[00:00:17.762,000] <inf> lora_receive: Received data: helloworld (RSSI:-55dBm, SNR:9dBm)
[00:00:17.762,000] <inf> lora_receive: Stopping packet receptions
[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

8
samples/drivers/lora/receive/src/main.c
View file

@ -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: %d dBm, SNR: %d dB", rssi, snr);
LOG_HEXDUMP_INF(data, size, "LoRa RX payload");
/* Stop receiving after 10 packets */
if (++cnt == 10) {
@ -79,8 +79,8 @@ int main(void)
return 0;
}
LOG_INF("Received data: %s (RSSI:%ddBm, SNR:%ddBm)",
data, rssi, snr);
LOG_INF("LoRa RX RSSI: %d dBm, SNR: %d dB", rssi, snr);
LOG_HEXDUMP_INF(data, size, "LoRa RX payload");
}
/* Enable asynchronous reception */