Hello,
i have a TD1204 device with its original firmware (versions at the bottom of this post) and i try since days making work the Sigfox downlink.
My device is working fine with uplink.
I tried AD$SF and AT$SB commands, documented in the V1.4 TD1204 reference manual, without success.
For exemple, using the AT$SB=1,2,1 command,
- the TD1204 responds OK as answer and the message is correctly transmitted to the Sigfox network (i receive it) but Sigfox says that there is no <ack> request in the message and do not provide any downlink message (of course).
- but the TD1204 does not respond anything after OK, and the +RX BEGIN expected message never appears as explained in the example of the reference guide screen copy below
- i probably miss something in the TD1204 initialization, but impossible to understand what !
My device :
AT&V
Telecom Design TD1204
Hardware Version: 01
Software Version: SOFT1292
S/N: 000150C6
TDID: 340652179022
ACTIVE PROFILE
E1 V0 Q0 X1 S200:0 S300:24 S301:2 S302:14 S303:1 S400:000000 S401:FFFFFFF S402:0 S403:869412500 S404:14 S405:32
0