From 217a67861b8df7de347613baf6f1bbc5cc32d7c9 Mon Sep 17 00:00:00 2001 From: Shoichi Sakane Date: Sat, 23 Sep 2017 21:43:30 +0900 Subject: [PATCH] updated --- README.md | 46 ++++++++++++++++++++++++++++++++++++++-------- 1 file changed, 38 insertions(+), 8 deletions(-) diff --git a/README.md b/README.md index 4194aa9..4423650 100644 --- a/README.md +++ b/README.md @@ -1,5 +1,5 @@ -lorawan_toa -=========== +LoRa Time on Air calculator +=========================== A calculator of the time on air of LoRa PHY frame in Python. This script refers to the section 4.1.1.6. LoRa Packet Structure, @@ -7,13 +7,43 @@ This script refers to the section 4.1.1.6. LoRa Packet Structure, ## Usage - Usage: lorawan_toa.py (sf) (size) [bw] [de] - size: PHY Payload siz (= MAC Payload + 5) - bw: bandwidth. default is 125 kHz. - de: low data optimization. default is 0. + lorawan_toa.py [-h] [--band-width N_BW] [--disable-dro] [--disable-eh] + [--cr N_CR] [--preamble N_PREAMBLE] [-v] [-d] + SF SIZE + + positional arguments: + SF Spreading Factor. It should be from 7 to 12. + SIZE PHY payload size in byte. It's equal to the MAC + payload + 5. + + optional arguments: + -h, --help show this help message and exit + --band-width N_BW bandwidth in kHz. default is 125 kHz. + --disable-dro disable the low data rate optimization. default is + enable as LoRaWAN does. + --disable-eh disable the explicit header. default is enable as + LoRaWAN does. + --cr N_CR specify the CR value. default is 1 as LoRaWAN does. + --preamble N_PREAMBLE + specify the preamble. default is 8 for AS923. + -v enable verbose mode. + -d increase debug mode. - % python lorawan_toa.py 12 64 500 - 616.448 (ms) +## Examples + + % python lorawan_toa.py -v 12 64 + PHY payload size : 64 Bytes + MAC payload size : 59 Bytes + Spreading Factor : 12 + Band width : 125 kHz + Low data rate opt.: enable + Explicit header : enable + CR (coding rate) : 1 (4/5) + Preamble size : 8 symbols + Time on Air : 2793.472 msec + + % python lorawan_toa.py --band-width=500 7 128 + 71.744 ## graph_as923.py