AT example (iBeacon mode) is not wokring when only power is given to TB-02 module

[himsashu]

I have flash the TB-02 module with at example and set this module to MODE 2. It started working a iBeacon when I connect the 3.3V, GND, RX and TX by TTL to USB converter. The module is not working in iBeacon mode if I connect this module with a 3.3V battery (only 3.3v and GND is connected).

[ospanic]

Yeath，It is a Bug，Check this file： Telink_825X_SDK/example/at/app_uart.c 95 line

[himsashu]

@ospanic Thanks for your reply. Can I remove the while(1) loop? Will it solve the issue.

I have one more question. I flash the iBeacon example code to TB-02 but module is only broadcasting the Bluetooth ID. The module is not broadcasting data in iBeacon protocol. The UIID, Major & Minor is not showing. Can you explain what data packet format this module is broadcasting.

Which code is more battery efficient (AT example in Mode 2 or iBeacon example) if I only wanted to use this module as a Beacon?

[ospanic]

If you just want TB02 work as a Beacon, you can see Telink_825X_SDK/study/01_Advertise/app.c

and modify the u8 tbl_advData[] = { 0x05, 0x09, 'A', 'B', 'C', 'D'}; //要广播的数据

attribute_data_retention u8 ibeacon_adv_data[30] = { 0x02, 0x01, 0x05, 0x1A, 0xFF, 0x4C, 0x00, //公司的标志 (0x004C == Apple) 0x02, 0x15, //iBeacon advertisement indicator 0xB9, 0x40, 0x7F, 0x30, 0xF5, 0xF8, 0x46, 0x6E, 0xAF, 0xF9, 0x25, 0x55, 0x6B, 0x57, 0xFE, 0x6D, // iBeacon proximity uuid 0x00, 0x01, // major 0x00, 0x01, // minor 0xc5, // calibrated Tx Power };

[himsashu]

I have done as you suggested and module is started working as ibeacon but the power consumption is very high. I have loaded 01_Advertise and iBeacon example in two TB02 module and directly connected CR2032 battery (+) and (-) terminal with the modules. The 01_Advertise firmware only run for 12 hours whereas iBeacon example run for more than 24 hours with this battery. Why there is so much difference in battery consumption in both firmware?

Can you help me in the setting/configuration of 01_Advertise example so that I will get maximum battery backup. I don't want good signal strength from TB-02. The 2 meter of signal coverage is more than enough in my case.

[ospanic]

Maybe the answer you want is here : Telink_825X_SDK/blob/master/example/iBeacon/app.c