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QST108AT0 数据表(PDF) 22 Page - STMicroelectronics |
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QST108AT0 数据表(HTML) 22 Page - STMicroelectronics |
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22 / 51 page  Device operating modes QST108 22/51 GET_DEVICE_INFO Write 0x85 Returns the QST108 device version and ASCII-coded device name. This command must be sent first to enable the communication flow. MainVers: Device main version SubVer: Device sub-version NbSCkey: 0x08 single-channel keys NbMCkey: 0x00 multi-channel keys Q S T 1 0 8: ASCII-coded device name Read 0x15 MainVers SubVers NbSCkey NbMCkey ‘Q’ ’S’ ‘T’ ‘1’ ‘0’ ‘8’ Checksum GET_KEY_ERROR Write 0xC4 Returns the error information on each key. KeyErrorN: KeyError byte description (see Table 12) Read 0x10 KeyError1 KeyError2 ... KeyError8 CheckSum GET_KEY_STATE Write 0xC1 Returns the state of all keys. AllKeyState: Touched/untouched state for all 8 keys. Refer to Table 13: AllKeyState. KeyError: Refer to Table 12: KeyError byte description Read 0x04 AllKeyState KeyError Checksum GET_PROTOCOL_VERSION Write 0x80 Returns the QST108 protocol version. MainVers: Protocol main version SubVer: Protocol sub-version I2CSpeed: 0x00 (100 kHz maximum) Read 0x07 MainVers SubVer I2CSpeed Checksum RESET_DEVICE Write 0xFD Restarts the device (options Read and Calibration) after reading the ErrCode (see Table 11). Read ErrCode SET_DETECT_INTEGRATORS Write 0x03 0x04 0x00 DI EDI PosRecaII CheckSum Sets the detection, End Of Detection and Positive Recalibration Integrators for all keys. DI: Detection Integrator 1) 3) EDI: End of Detection Integrator 1) 3) PosRecaII: Positive Recalibration Integrator 1) 3) ErrCode: Standard Error code (see Table 11) Read ErrCode SET_GPIO_STATE Write 0x08 0x01 GPOState Checksum Controls the state of the general-purpose outputs. GPOState: State of general-purpose outputs (see Table 16) ErrCode: Standard Error code (see Table 11) Read ErrCode Table 10. Supported commands (continued) I2C commands Description |
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