How to change a list of available channels for bw16

Technical Discussion Arduino SDK
,
1

Hello everyone.
i have Arduino IDE
and install bordManager realtek for use rtl8720dn.
I have a questions:
i need to change available channel list for scanning and work BW 16.
I find information in file …AmebaD\3.1.7\system\component\common\api\wifi\wifi_conf.c
about channellist
#define SCAN_CHANNEL_NUM 13+25 //2.4GHz + 5GHz
u8 scan_channel_list[SCAN_CHANNEL_NUM] = {1,2,3,4,5,6,7,8,9,10,11,12,13,
36,40,44,48,52,56,60,64,100,104,108,112,116,120,124,128,132,136,140,144,149,153,157,161,165};

i add 14 channel amd increase SCAN_CHANNEL_NUM to 14+25
and press compile in Arduino IDE
and nothink ^(((
also rename file to .cpp
and rename function wifi_scan_networks_mcc to wifi_scan_networks_mcc2
also in heder
i put the error message undefined function wifi_scan_networks_mcc2

because file cpp or c not working in procecc compile, instead working
/AmebaD/3.1.7/variants/common_libs/lib_arduino.a

how to recompile function to increase count of scanned channels?

also later i create own heder and cpp file contains needed variable and functions - its all from wifi_conf.c & <osdep_service.h>

success compile and
nothing
14 or 169 channells is not working ^(
i look sdr and another - not work.

also
wifi_set_channel_plan & wifi_get_channel_plan returned nothink ^(

uint8_t *channel_plan = 0;
int res = RTW_SUCCESS;
res = wifi_set_channel_plan(RTW_COUNTRY_JP);
/*res = wifi_get_channel_plan(channel_plan);
Serial.print("channel_plan = ");
Serial.println(*channel_plan); */
if( res == RTW_SUCCESS)
Serial.println(“RTW_SUCCESS”);
else if( res == RTW_ERROR)
Serial.println(“RTW_ERROR”);

how to use 14, 169, 171 and 177 channels for bw16?

2

Hi @Alexandr ,

#define SCAN_CHANNEL_NUM 13+25 // 2.4GHz + 5GHz refers to the number of channels to scan
If you would like to use other channel which is not found in u8 scan_channel_list, you modify the scan channel list (i.e. replacing those channel numbers which are not used in your channel plan with 14, 169, 171 and 177). Hope it helps.

Thank you.

3

HI
no, uncle - its not woking.
file with name wifi_conf.c or wifi_conf.cpp not used during compilation

donot think i so stupid ^)))
arduino ide using binary file coommon/arduino.a
during compile the project.
i can delete wifi_conf.c and nothing changed ^)))

questions
how to recompile coommon/arduino.a ?