setbit
Newbie
- Joined
- Jul 2, 2010
- Messages
- 2
- Helped
- 0
- Reputation
- 0
- Reaction score
- 0
- Trophy points
- 1,281
- Location
- Hungary
- Activity points
- 1,301
Hi all!
I can communicate with the WH-LTE-7S1-E LTE/GSM module, but it sends periodically "No SIM<CR><LF>" messages and "WH-LTE-7S1-E" boot messages. These messages are disturb my communication. Of course, I put SIM card into the socket.
Both of SIM cards I tried, are valid, and works perfectly in other devices from 1.8V power voltage.
I see SIM DAT and SIM CLK activity before No SIM<CR><LF> messages. The signal shapes are correct.
The SIM RST pin goes to 1,8V 3,8sec after power on.
I pulled up the SIM_DAT pin to 1.8V VSIM voltage, (as WH-LTE-7S1-E Hardware Manual suggests) but it doesn’t helped.
A strange thing I see, the SIM CLK has 32 period on the shortest (probably 1 bit wide) SIM DAT pulse.
Unfortunately there is nothing info on the internet about usage of WH-LTE-7S1-E.
The factory documents are not very talkative, and I can not found any application or a row of source code about this module.
Link to factory documents: https://www.pusr.com/products/LTE-Cat-1-module.html
Any ideas are greatly appreciated!
Gyuri
I can communicate with the WH-LTE-7S1-E LTE/GSM module, but it sends periodically "No SIM<CR><LF>" messages and "WH-LTE-7S1-E" boot messages. These messages are disturb my communication. Of course, I put SIM card into the socket.
Both of SIM cards I tried, are valid, and works perfectly in other devices from 1.8V power voltage.
I see SIM DAT and SIM CLK activity before No SIM<CR><LF> messages. The signal shapes are correct.
The SIM RST pin goes to 1,8V 3,8sec after power on.
I pulled up the SIM_DAT pin to 1.8V VSIM voltage, (as WH-LTE-7S1-E Hardware Manual suggests) but it doesn’t helped.
A strange thing I see, the SIM CLK has 32 period on the shortest (probably 1 bit wide) SIM DAT pulse.
Unfortunately there is nothing info on the internet about usage of WH-LTE-7S1-E.
The factory documents are not very talkative, and I can not found any application or a row of source code about this module.
Link to factory documents: https://www.pusr.com/products/LTE-Cat-1-module.html
Any ideas are greatly appreciated!
Gyuri