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We are using CTP based on GT9271 IC .
we were able to set-up a working I2C communication with the IC (Interrupt-driven) . but the Touch IC is responding at each touch event by a 2 seconds delayed INT signal and the status register (0x814E) is always showing 0x80 indicating that there isn't any detected touch point .. I think that some how , there is a sensitivity problem
| name | type | start_time | address | read | data |
| I2C | start | 3.0558593 | |||
| I2C | address | 3.0558695 | 0x5D | false | |
| I2C | data | 3.0562708 | 0x81 | ||
| I2C | data | 3.0566863 | 0x4E | ||
| I2C | start | 3.0574328 | |||
| I2C | address | 3.057443 | 0x5D | true | |
| I2C | data | 3.0581595 | 0x80 | ||
| I2C | data | 3.058892 | 0x00 | ||
| I2C | data | 3.0596258 | 0x00 | ||
| I2C | data | 3.0603603 | 0x00 | ||
| I2C | data | 3.0610953 | 0x00 | ||
| I2C | data | 3.0618293 | 0x00 | ||
| I2C | data | 3.0622428 | 0x00 | ||
| I2C | data | 3.0626568 | 0x00 | ||
| I2C | data | 3.0630723 | 0x00 | ||
| I2C | data | 3.063488 | 0x00 | ||
| I2C | stop | 3.063908 | |||
| I2C | start | 3.064089 | |||
| I2C | address | 3.0640993 | 0x5D | false | |
| I2C | data | 3.0648343 | 0x81 | ||
| I2C | data | 3.0655653 | 0x4E | ||
| I2C | data | 3.0663058 | 0x00 | ||
| I2C | stop | 3.0670413 | |||
| I2C | start | 3.0798808 | |||
| I2C | address | 3.079891 | 0x5D | false | |
| I2C | data | 3.0806073 | 0x81 | ||
| I2C | data | 3.0813438 | 0x4E | ||
| I2C | start | 3.082087 | |||
| I2C | address | 3.082097 | 0x5D | true | |
| I2C | data | 3.0824913 | 0x80 | ||
| I2C | data | 3.0829045 | 0x00 | ||
| I2C | data | 3.083322 | 0x00 | ||
| I2C | data | 3.083739 | 0x00 | ||
| I2C | data | 3.0841503 | 0x00 | ||
| I2C | data | 3.0845653 | 0x00 | ||
| I2C | data | 3.0849818 | 0x00 | ||
| I2C | data | 3.0853985 | 0x00 | ||
| I2C | data | 3.0858115 | 0x00 | ||
| I2C | data | 3.0862275 | 0x00 | ||
| I2C | stop | 3.0866475 | |||
| I2C | start | 3.08682 | |||
| I2C | address | 3.0868303 | 0x5D | false |
can you please help us to solve the sensitivity problem of the CTP
Goodix Administrator
Hi, it's very sorry that this community doesn't provide Touch product support, you can send an email to sales@goodix.com for consultation or contact your vendor. Thanks!
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