Wow!!! This was completely unknown to me. Lucky enough, I had a USB to TTL device at home but never occurred me to connect the TTL input to a USB port.
Here you go the pinout:
CH340 TTL → Cam USB
- GND → GND (pin 5)
- Vcc → Vcc (pin 1)
- Rx → D+ (pin 3)
- Tx → D- (pin 2)
Then you open Putty and configure it for Serial. Set the corresponding COM port and set speed to 115200, 8 data bits, 1 stop bits, no parity, no flow control. That’s it!
This is what I get:
NOTE: The access point the camera connects to does not have Internet access.
\ | /
- RT - Thread Operating System
/ | \ 3.1.0 build Feb 25 2021
2006 - 2018 Copyright by rt-thread team
SEARCH PASSWORD FAIL
user cfg MAC:00:1a:c7:12:59:82
[FUNC]rwnxl_init
WAKE GPIO 20 0
deep_ps gpio clear over
[FUNC]calibration_main
get rfcali_mode:0
tssi_th:b-125, g-100
fit n20 tab with dist:2
fit n20 tab with dist:2
fit n20 tab with dist:2
txpwr table for ble ch0/19/39 inused
lpf_i & q in flash is:14, 14
xtal in flash is:8
xtal_cali:8
[FUNC]ps_init
[FUNC]func_init OVER!!!
lwIP-2.0.2 initialized!
set dac vol:65 - indx:11,dig:30,ana:1a
set adc vol: 99 - 99
igmp_mac_filter add 224.0.0.1 01:00:5E:00:00:01
register station wlan device sucess!
igmp_mac_filter add 224.0.0.1 01:00:5E:00:00:01
register soft-ap wlan device sucess!
beken wlan hw init
drv_pm_init
[D/FAL] (fal_flash_init:63) Flash device | beken_onchip | addr: 0x00 000000 | len: 0x00400000 | blk_size: 0x00001000 |initialized finish.
[D/FAL] (fal_flash_init:63) Flash device | beken_onchip_crc | addr: 0x00 000000 | len: 0x00400000 | blk_size: 0x00001000 |initialized finish.
[D/FAL] (fal_partition_init:176) Find the partition table on 'beken_onchip_crc' offset @0x0000d2cc.
[I/FAL] ==================== FAL partition table ====================
[I/FAL] | name | flash_dev | offset | length |
[I/FAL] -------------------------------------------------------------
[I/FAL] | bootloader | beken_onchip_crc | 0x00001f00 | 0x0000e000 |
[I/FAL] | app | beken_onchip_crc | 0x00010000 | 0x00110000 |
[I/FAL] | download | beken_onchip | 0x00132000 | 0x000cc000 |
[I/FAL] =============================================================
[I/FAL] RT-Thread Flash Abstraction Layer (V0.4.0) initialize success.
TZH customer=2
ROMFS File System initialized!
Enter normal mode...
app_init finished
app_led_init
start watch dog
rt_hw_wdg_start time=10000 threshold=5000
app_demo_apcfg_init 1
PPCScfm DID=ACCQ-046396-NNMPZ
PPCScfm DID_APILICENSE=UHBEAL
Camera name=Camera
User name=admin
User password=admin
SEARCH USER OK ssid=default
SEARCH USER OK key=
st_ssid=default
st_pwd=
ssid:default key:
[sa_sta]MM_RESET_REQ
[sa_sta]ME_CONFIG_REQ
[sa_sta]ME_CHAN_CONFIG_REQ
[sa_sta]MM_START_REQ
hapd_intf_add_vif,type:2, s:0, id:0
wpa_dInit
wpa_supplicant_req_scan
Setting scan request: 0.100000 sec
MANUAL_SCAN_REQ
video open
video_intf_main
video_transfer_init 3
video_transfer_main entry
video transfer send type:3
set 640x480 bitrate size
Camera Reset
fps_type=1
set FPS OK
GC_0309init finish
camera_intfer_init,a5a50003-a5a50005
vbuf opened
sd check init-----
sd_check_init ok!
voice open
tvoice init 0001da0d
tvoice main
set adc sample rate 8000
set adc channel 1
adc-buf:0041f7f0, adc-buf-len:5120, ch:1
msh />wpa_supplicant_scan
wpa_drv_scan
wpa_send_scan_req
wpa_driver_scan_cb
wpa_get_scan_rst:1
MSG_AP_FOUND!!!
wpa_supplicant_connect
Cancelling scan request
wpa_driver_associate
---------SM_CONNECT_IND_ok
wpa_driver_assoc_cb
[wlan_connect]:start tick = 0, connect done tick = 3767, total = 3767
[wlan_connect]:start tick = 0, connect done tick = 3767, total = 3767
[WLAN_MGNT]wlan sta connected event callback
sta_ip_start
configuring interface mlan (with DHCP client)
dhcp_check_status_init_timer
Cancelling scan request
batt-band=4
IP UP: 192.168.1.226
[ip_up]:start tick = 0, ip_up tick = 4692, total = 4692
=========================
demo_apcfg_sta_ok!!!!
0, try:cn.ntp.org.cn, no response
1, try:ntp.ntsc.ac.cn, no response
all ntp host are no response
[E/HTTP_OTA] (http_ota_alarm_start:451) do ota when poweron, and first connected
current firmware name: app, version: app_202102211937, timestamp: 1614236949
remote url:http://112.74.76.191/update_jxl_gc0309/rtthread.rbl
[E/HTTP_OTA] (http_ota_fw_download:143) open uri failed.
[I/HTTP_OTA] FLASH_PROTECT_ALL.
ota alarm start: 00:30:00
========didApilics:OK len=6====
video open
voide open aready DONE
vi open_p2p
vi open_p2p done
voice open
voice aready opened
play adpcm init
set_dac_sample_rate 8000
[icodec]:open sound device
******* PPCS Version:3010401 ********
Init String:EBGDEJBJKGJLGHJIEJGMFOEGABCDEINDHDABAEGJAFNJOJLKHLAKDMKNHCLMMILCFABCDEHEPPICADCN:@@@@....
