When SNS and SNSK pins are available on different ports, the channel numbering follows the pin numbering in the ports selected based on SNS_array and SNSK_array bits enabled.The pins which needs to be used for touch should be provided in the Pin Configurator Wizard in QTouch Studio and the pin configurator Wizard tool will generate the SNS_array and SNSK_array masks and channel numbering will be based on which pins are enabled for touch in consecutive way. Below is an example to illustrate the same:
SNS and SNSK pins are configured with few rules keeping in mind as illustrated in section
Pins A0 ,A1,A4 and A6 of PORT A are SNS pins and pins B2,B3,B5,B7 are SNSK pins of PORT B.
Channel 0 will be forming a SNS-SNSK pair as A0B2.
Channel 1 will be forming a SNS-SNSK pair as A1B3
Channel 2 will be forming a SNS-SNSK pair as A4B5
Channel 3 will be forming a SNS-SNSK pair as A6B7.
The channel numbering is not dependent on the pin numbering.