fix channel_num log

[andrekir]

the value shown in the log for channel_num is actually (channel_num - 1) because that is the value used in the formula to calc frequency center:

firmware/src/mesh/RadioInterface.cpp

Line 457 in b398f31

int channel_num = (loraConfig.channel_num ? loraConfig.channel_num - 1 : hash(channelName)) % numChannels;

firmware/src/mesh/RadioInterface.cpp

Line 463 in b398f31

float freq = myRegion->freqStart + (bw / 2000) + (channel_num * (bw / 1000));

below should be preferred for clarity:

int channel_num = (loraConfig.channel_num ? loraConfig.channel_num - 1 : hash(channelName)) % numChannels + 1;
...
float freq = myRegion->freqStart + (bw / 2000) + ((channel_num - 1) * (bw / 1000));

[github-actions]

🤖 Pull request artifacts

file	commit
pr2361-firmware-2.1.3.3e818a5.zip	3e818a5

[caveman99]

Valid observation, but the proposed fix will break things badly for all users. Can't we just fix the log display?