TSC in STM32WB using STM32Cube

[gousebasha shaik]

Hi Sir/Madam,

In STM32CubeMX, the TSC in System core, we finding only group-2 with four I/Os. I am thinking that there must be group-1, group-3, group-4. So that we can implement TSC with more keys.

please suggest me proper settings required to do this.

Thanks & Regards

[Remi QUINTIN · Accepted solution]

According STM32CubeMx:

On STM32WB55 QFN48 we support only 1 group (G2).

• 3 buttons (e.g)
  • One Sampling capacitor (G2_IO1)
  • 3 sensors (G2_IO2/3/4).

 On STM32WB55 QFN68 we support 3 groups (G1 G2 G3).

• 1 Shield (e.g)
  • One Sampling capacitor (G1_IO1)
  • 1 Shield (G1_IO2).
•  6 buttons (e.g)
  • One Sampling capacitor (G2_IO1)
  • 3 sensors (G2_IO2/3/4).
  • One Sampling capacitor (G3_IO1)
  • 3 sensors (G3_IO2/3/4).

[gousebasha shaik]

Hi Sir,

Initially, we chose the STM32WB55 (QFN48) it has only one group. Currently we required a slider (linear). So we are moving to the QFN68 package. In my case, i need six plus keys, So Can I avoid the shielding to get the 9 keys? One Sheilding I/O is enough to all the keys?

Thanks You