The high-pass filter works great! However, I'm wondering if it is possible to modify its parameters on the fly, i.e. without re-setting its memory. Here is the application: After turning on, I want the system to compensate for the initial DC as fast as possible. That could be done by setting the HPF cut-off frequency to e.g. 10Hz. After some time, e.g. 500ms, I could modify the filter to the intended 0.01Hz cut-off.
Does that work? I'm puzzled here trying to initialize the ADS1282 twice- doing so will disconnect the inputs.
Here is what I send (all hex)
41 (write from cell 1 on)
04 (write four bytes)
47 (Config0: include HPF)
0B (Config1: gain=8)
E9 (HPF0)
41 (HPF1: 41E9 = 10Hz)
<wait 500ms>
41 (write from cell 1 on)
04 (write four bytes)
47 (Config0: include HPF)
0B (Config1: gain=8)
38 (HPF0)
03 (HPF1: 0338 = 0.5Hz)
what am I doing wrong?
thank you :)
Brian
