KRAPman
Newbie level 4
hello!
I bought those well-known "bluetooth to serial tranciever" modules, which looks almost same as this one: Wireless Bluetooth RS232 TTL Transceiver Module - Air, also have CSR BC417143 chipset on it, except there are some SMDs which are replaced and it has new revision date on it (it says: 2010-09-03; in attachment).
I already bought 2 of those modules in the past and everything work as it should be and I made myself PCB for easy interfacing the module to PC (via RS-232 level translation).
But the new module (even if I solder it on the working PCB) is acting strange: it already blinks (3Hz) when I turned it on (like going into pairing mode or something). The biggest problem is that I CAN NOT interface it at all, I tried all the baud rates and different levels on other I/Os. I closely examined every WWW (like this one: **broken link removed**) but didn't find the answer.
I tried to replaced it with another one (also new one), but some problem. It seems that integrated UART is not working or something-.
Did anyone else experience a similar situation? Where can I start debugging all this??
I already contacted manufacturer but still did not get any answer (for new datasheet and changes made in new revision)...
please help!
Kind regards
I bought those well-known "bluetooth to serial tranciever" modules, which looks almost same as this one: Wireless Bluetooth RS232 TTL Transceiver Module - Air, also have CSR BC417143 chipset on it, except there are some SMDs which are replaced and it has new revision date on it (it says: 2010-09-03; in attachment).
I already bought 2 of those modules in the past and everything work as it should be and I made myself PCB for easy interfacing the module to PC (via RS-232 level translation).
But the new module (even if I solder it on the working PCB) is acting strange: it already blinks (3Hz) when I turned it on (like going into pairing mode or something). The biggest problem is that I CAN NOT interface it at all, I tried all the baud rates and different levels on other I/Os. I closely examined every WWW (like this one: **broken link removed**) but didn't find the answer.
I tried to replaced it with another one (also new one), but some problem. It seems that integrated UART is not working or something-.
Did anyone else experience a similar situation? Where can I start debugging all this??
I already contacted manufacturer but still did not get any answer (for new datasheet and changes made in new revision)...
please help!
Kind regards