Setting AT+QWMOCH to Enable 5Ghz WiFi Unsuccessful (EC25-FC20)

Jesse_Cho · February 16, 2021, 10:27am

Hello there!

We are using EC25 and FC20 module on our IoT device using “usbnet” (mobile hotspot that also includes the host within the local network). Currently we are using 2.4Ghz standard, but we would like to use 5Ghz. By looking at the Wi-Fi Application Note that came with the modules, we found:

I’ve so far tried setting different values with the AT+QWMOCH command as follows:

AT+QWMOCH=10,0
AT+QWMOCH=11,0
AT+QWMOCH=5,0

Each time I set the value with the command, I did full power down and power on, but so far the module is only shooting 2.4Ghz signal.

For identifying the version of the firmware, here is the output of ATI command:

ATI
Quectel
EC25
Revision: EC25AFAR05A06M4G

OK

Zach.zhang-Q · February 18, 2021, 9:24am

Hi Jesse,

I’ve done a test based on EC25A with the same firmware as yours, the result is that this AT command took an effect, you could check the log shown as below.

/*********************************************** CUT HERE ***********************************************/
root@mdm9607-perf:~# ati
Quectel
EC25
Revision: EC25AFAR05A06M4G

OK

/***** Query current setting *****/
root@mdm9607-perf:~# at+qwmoch?
+QWMOCH: 10,0

OK

/***** Change settings *****/
root@mdm9607-perf:~# at+qwmoch=11,0
OK

/***** Query the latest setting *****/
root@mdm9607-perf:~# at+qwmoch?
+QWMOCH: 11,0

OK

/Device boot up start/

root@mdm9607-perf:~#
Format: Log Type - Time(microsec) - Message - Optional Info
Log Type: B - Since Boot(Power On Reset), D - Delta, S - Statistic
S - QC_IMAGE_VERSION_STRING=BOOT.BF.3.1.2-00061
S - IMAGE_VARIANT_STRING=LAATANAZA
S - OEM_IMAGE_VERSION_STRING=SH-SW7050-
S - Boot Config, 0x000002e1
B - 1216 - PBL, Start
B - 3723 - bootable_media_detect_entry, Start
B - 4392 - bootable_media_detect_success, Start
B - 4397 - elf_loader_entry, Start
B - 7850 - auth_hash_seg_entry, Start
B - 8072 - auth_hash_seg_exit, Start
B - 51569 - elf_segs_hash_verify_entry, Start
B - 91805 - PBL, End
B - 100467 - SBL1, Start
B - 158508 - pm_device_init, Start
B - 178791 - PM_SET_VAL:Skip
D - 18208 - pm_device_init, Delta
B - 179767 - boot_config_data_table_init, Start
D - 174917 - boot_config_data_table_init, Delta - (420 Bytes)
B - 358222 - CDT version:3,Platform ID:8,Major ID:1,Minor ID:0,Subtype:0
B - 364688 - sbl1_ddr_set_params, Start
B - 368165 - cpr_init, Start
D - 0 - cpr_init, Delta
B - 373808 - Pre_DDR_clock_init, Start
D - 213 - Pre_DDR_clock_init, Delta
D - 0 - sbl1_ddr_set_params, Delta
B - 386709 - pm_driver_init, Start
D - 4544 - pm_driver_init, Delta
B - 399001 - sbl1_qhsusb_al_do_fast_enum, Start
B - 399306 - clock_init, Start
D - 152 - clock_init, Delta
B - 403271 - boot_flash_init, Start
D - 37149 - boot_flash_init, Delta
B - 444476 - Image Load, Start
D - 54626 - QSEE Image Loaded, Delta - (481924 Bytes)
B - 499132 - Image Load, Start
D - 30 - SEC Image Loaded, Delta - (0 Bytes)
B - 506666 - sbl1_efs_handle_cookies, Start
D - 0 - sbl1_efs_handle_cookies, Delta
B - 513955 - Image Load, Start
D - 31903 - RPM Image Loaded, Delta - (151680 Bytes)
B - 545889 - Image Load, Start
D - 46177 - APPSBL Image Loaded, Delta - (376488 Bytes)
B - 592096 - QSEE Execution, Start
D - 213 - QSEE Execution, Delta
B - 597861 - SBL1, End
D - 499681 - SBL1, Delta
S - Throughput, 3000 KB/s (1010512 Bytes, 291697 us)
S - DDR Frequency, 240 MHz
Android Bootloader - UART_DM Initialized!!!
[0] welcome to lk

[0] SCM call: 0x2000601 failed with :fffffffc
[0] Failed to initialize SCM
[10] platform_init()
[10] target_init()
[10] 111 flash->id=0x2690ac98,supported_flash[0]=0x1590ac2c, flash->id2=0x81676, supported_flash_id2=0x56[20] 111 flash->id=0x2690ac98,supported_flash[1]=0x1590ac01, flash->id2=0x81676, supported_flash_id2=0x56[30] 111 flash->id=0x2690ac98,supported_flash[2]=0x1590ac2c, flash->id2=0x81676, supported_flash_id2=0x57[30] 111 flash->id=0x2690ac98,supported_flash[3]=0x1590aa2c, flash->id2=0x81676, supported_flash_id2=0x6[40] 111 flash->id=0x2690ac98,supported_flash[4]=0x2690ac2c, flash->id2=0x81676, supported_flash_id2=0x54[50] 111 flash->id=0x2690ac98,supported_flash[5]=0x1590acad, flash->id2=0x81676, supported_flash_id2=0x0[60] 111 flash->id=0x2690ac98,supported_flash[6]=0x9590dc2c, flash->id2=0x81676, supported_flash_id2=0x56[70] 111 flash->id=0x2690ac98,supported_flash[7]=0x1590aa98, flash->id2=0x81676, supported_flash_id2=0x76[80] 111 flash->id=0x2690ac98,supported_flash[8]=0x2690a32c, flash->id2=0x81676, supported_flash_id2=0x64[90] 111 flash->id=0x2690ac98,supported_flash[9]=0x2690ac98, flash->id2=0x81676, supported_flash_id2=0x81676[100] smem ptable found: ver: 4 len: 16
[100] ERROR: No devinfo partition found
[110] Neither ‘config’ nor ‘frp’ partition found
[110] [Ramos] get fastboot message start !!!
[110] [Ramos] get fastboot message end !!!
CTRL+C: enter instruction mode
PINTEST OR FASTBOOT

aboot_init char: aboot_init char: aboot_init char: aboot_init char: aboot_init char: aboot_init char: aboot_init char: aboot_init char: aboot_init char: aboot_init char: [230] flash_read_image: success (0 errors)
[230] @Ramos Ql_check_RestoreFlag:offset=940000, magic1=464c457f,magic2=10101,linuxfs_restoreFlag=0, cefs_restoreFlag=0
[240] flash_read_image: success (0 errors)
[250] @Ramos Ql_check_RestoreFlag:offset=940000, magic1=464c457f,magic2=10101,linuxfs_restoreFlag=0, cefs_restoreFlag=0
[260] AAAAALoading (boot) image (5775360): start
[820] AAAAALoading (boot) image (5775360): done
[830] Authenticating boot image (5775360): start
[890] Authenticating boot image: done return value = 1
[940] DTB Total entry: 25, DTB version: 3
[950] Using DTB entry 0x00000129/00010000/0x00000008/0 for device 0x00000129/00010000/0x00010008/0
[960] [Dawn] alloc len: 36864 block len: 262144 pagesize=:4096
[970] flash_read_image: success (0 errors)
[970] [Dawn] 0x7fffff01 not exist,Pllease set item before!!
[970] [Dawn] alloc len: 36864 block len: 262144 pagesize=:4096
[980] flash_read_image: success (0 errors)
[990] [Dawn] 0x7fffff02 not exist,Pllease set item before!!
[990] cmdline: noinitrd rw console=ttyHSL0,115200,n8 androidboot.hardware=qcom ehci-hcd.park=3 msm_rtb.filter=0x37 lpm_levels.sleep_disabled=1 earlycon=msm_hsl_uart,0x78b3000 androidboot.serialno=7e419ab5 androidboot.authorized_kernel=true androidboot.baseba[1020] Updating device tree: start
[1120] Updating device tree: done
[1130] booting linux @ 0x80008000, ramdisk @ 0x80008000 (0), tags/device tree @ 0x81e00000
INIT: version 2.88 booting
ln: /system/bin/sh: File exists
Switching to composition number 0x9025
Starting adbd: done
@Ramos modem file check ok !!!Starting psmd: done
/firmware/image
Nothing to do. No firmware links needed.
Starting ipacm_perf: done
Starting ipacmdiag: done
Starting QCMAP_ConnectionManager: done
Starting qti: done
Mon Feb 17 12:44:16 UTC 2020
INIT: Entering runlevel: 5alid argument
Starting quectel_pcm_daemon: done
Configuring network interfaces… Cannot find device “eth0”
Starting syslogd done
Starting tftp_server: /sbin/tftp_server is already running
368
Starting irsc_util: Starting irsc tool
Failed to open file:/etc/sec_config
Absent/Invalid config,Default rules apply
Ending irsc tool
done
Starting time_services: done
Starting modem dependent daemons: Starting/Loading embms_kernel module: done loading embms_kernel module
Starting qmuxd: done
Starting thermal-engine: done
Starting qllog: done
Starting netmgrd: done
Starting qmi_shutdown_modem: done
Starting quectel_daemon: done
Starting quectel-thermal: done
Starting quectel-writedata-test: done
Starting quectel_daemon: done
Starting quectel_psm_aware: done
Starting remotesim: done
Starting quectel-remotefs-service done
Starting quectel-smd-atcmd: done
Starting quectel-tts-service done
Starting Lighttpd Web Server: self-signing certificates already exist for webserver: lighttpd.
1980-01-06 00:08:21: (/Qualcomm/MDM9x07/MCU_R05/apps_proc/oe-core/build/tmp-glibc/work/armv7a-vfp-neon-oe-linux-gnueabi/lighttpd/1.4.35-r1/lighttpd-1.4.35/src/log.c.164) server started
Starting eMBMs_TunnelingModule: done
Starting qmi_ip: done
Starting subsystem_ramdump: done
Starting wlan_services… start
Setting restart level: system
done

set -e
echo -n Starting quectel-gps-handle(uart-ddp):
Starting quectel-gps-handle(uart-ddp): + echo cp quectel-uart-ddp quectel-gps-handle done
cp quectel-uart-ddp quectel-gps-handle done
start-stop-daemon -S -b -a /usr/bin/quectel-gps-handle – -default
echo done
done
exit 0
cat: can’t open ‘/etc/dynamic_console’: No such file or directory
Starting/Loading Shortcut_FE Driver: done loading Shortcut FE driver
Starting system message bus: dbus.
Starting modem dependent daemons: Starting diagrebootapp: done
Starting atreset: done
Starting Lighttpd Web Server: self-signing certificates already exist for webserver: /usr/sbin/lighttpd is already running
824
lighttpd.
Starting qti_ppp: done
done

Starting Avahi Unicast DNS Configuration Daemon: avahi-dnsconfd
…fail!
S:2345:respawn:/sbin/getty -L ttyHSL0 115200 console
Starting powerconfig for mdm9607: Starting fs-scrub-daemon: /sbin/fs-scrub-daemon is already running
369
Starting pdc daemon: done
Starting ql_manager_server: done

/Device boot up end/

/***** Query the latest setting *****/
root@mdm9607-perf:~# at+qwmoch?
+QWMOCH: 11,0

OK

Han_Yang_Du · April 13, 2021, 6:02pm

Hello, we verified that the AT+QWMOCH=11,0 setting persisted after reboot but iwlist frequency on our linux client and android WiFi settings show that it’s still running on 2.4GHz instead of 5GHz.

Han_Yang_Du · May 13, 2021, 2:40am

A customer support team member just helped us solve this problem. Our firmware was a little old so it doesnt support auto channel selection for 5GHz wifi. ac mode was also not supported. We managed to get 5GHz a/n mode wifi on channel 149 using AT+QWMOCH=1,149