My captouch project needs tuning. Since CTW( still ) does not work with a uartconnection I am tuning it manually with help of the debugger.
The touch pcb is mounted behind 4mm perspex and 1mm air gap, so i don't have a great signal.
When watching the baselines I noticed that some lines shows a deviation of sometimes 3000 counts when a key was touched, even baselines of other keys went up and down. When this happenes some keys stop working.
By accident I worked with the default thresholdvalues of about 1000 : The deviation of baselines was 300-400 counts, all keys kept working fine.
If i change the TH to my wanted value of 2000 my problem was back, shown here:
0 - 60: TH = 1000 from 60 on TH = 2000
I don't expect the influence of TH values to the baselines.
I played whith settings like filter constants without succes.
I work with SSP1.4 (same problem with 1.3) and R7S12447 and 5 simple keys
I included my stripped project.
Have you already solved this issue? Also, the link to the attached project is broken too.
JBRenesasRulz Forum Moderator
In reply to JB:
In reply to Dig Kleppe:
In reply to Chr15t0ph3r:
Also, in looking through your ctsu configuration thread your configuration seems alright in that you want it setup for a 4MHz drive. Your thresholds should be roughly 1-3k at that frequency, depending. However, your SDPA frequency might be off. I think your CTSU clock should be 0x02 since your PCLKB is set to 24MHz.