QST108 STMicroelectronics, QST108 Datasheet - Page 23

• Manufacturer Part Number: QST108
• Description: Capacitive Touch Sensor Device 8 Keys With Individual Key State Outputs Or I2c Interface
• Manufacturer: STMicroelectronics

QST108
Error codes
Table 11
Table 11.
KeyError byte description
Table 12.
Key state (Bit 7)
Key error codes (Bits 2:0)
All key state description
Table 13.
Key n state
Key 8 State Key 7 State Key 6 State Key 5 State Key 4 State Key 3 State Key 2 State Key 1 State
Key State
Bit 7
Bit 7
ErrCode
When set to ‘1’, the corresponding key is touched. This bit is always cleared for the
GET_KEY_STATE command.
When answering the GET_KEY_STATE command, the key error code corresponds to
the error codes of all the keys ORed toghether. When answering the
GET_KEY_ERROR command, each key error code describes the errors of one defined
key.
When set to ‘1’, the corresponding key is touched.
0xA1
0xA3
0xE0
0x01
0x83
0x85
lists the I
Bit 0: When set to ‘1’, calibration in progress
Bit 1: When set to ‘1’, maximum count reached
Bit 2: When set to ‘1’, minimum count not reached
ErrCode
KeyError byte description
AllKeyState
Bit 6
Bit 6
0
No Error
Command not supported
Parameter not supported
Parity Error
Checksum Error
Initialization process (GET_FIRMWARE_INFO command not received)
2
C error codes.
Bit 5
Bit 5
0
Bit 4
Bit 4
0
Description
Bit 3
Bit 3
0
Bit 2
Bit 2
Device operating modes
Key error codes
Bit 1
Bit 1
Bit 0
Bit 0
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