Firmware Development for Projects.pptVIP

本Slide的时间?? 讲授顺序?? 采用例子?? 其它技巧?? 本Slide的时间?? 讲授顺序?? 采用例子?? 其它技巧?? Checksum = 0xF3^0x08^0x01 Page * CTP Communication Protocol 22 Feb, 2011 zhongxy Contents CTPM Interface IIC Standard Protocol Coordinate Data Read Register read/write FTS 26 Bytes(IIC/SPI) Protocol Coordinate Data Read Register read/write Update CTPM Firmware CTPM Interface Figure 1-1 shows how CTPM communicates with the Host，there are two ways communicate between CTPM and Host，we will introduce each communication in this section. 1、BUS: Transfer the data via I2C/SPI; 2、/INT: Send interrupt once there is a valid touch; 3、/WAKE: Host send Wakeup signal to CTPM; CTPM Interface 4、Power Supply voltage： 2.8V~3.3V, 5、interface voltage：2.8V~3.3V. For the detail, please refer to Table 1-1. NOTE: FT5x06 serial interface ：2.8V~3.3V or 1.8V IIC Standard Potocol I2C Read/Write Interface description Host write data to slave Host read data from slave step1:write data address step2:read data IIC Standard Potocol Coordinate Data Read timing to get touch data IIC Standard Potocol 2.Coordinate data register map GEST_ID IIC Standard Potocol IIC Standard Potocol TD_STATUS（TOUCH EVENT） IIC Standard Potocol 3.Operating Start Slave Address W 0x01 Stop Start Slave Address R (6*PointNum+2) Bytes Stop IIC Standard Potocol Register Read/Write 1.Used Register Address Bit Address Register Name Description 0x88 7：0 ID_G_ PERIOD Range form 3to14,default 6 0xa5 7：0 ID_G_ PMODE 0: active 1: monitor 3: hibernate(deep sleep) 0xa6 7：0 ID_G_ FIRMWARE_ID R: xx 0xa1 7：0 ID_G_LIB_VERSION_H R: xx 0xa2 7：0 ID_G_ LIB_VERSION_L R: xx IIC Standard Potocol 2.Operating a)Register Write Start Slave Address W Register Address Data Stop b)Register Read Start Slave Address W Register Address Stop Start Slave Address R 1 Byte Stop IIC Standard Potocol Read Raw Data Start scanning: write register 0x00 to 0xc0 Wait for scanning complete: read register 0x00 Write LineNum to register 0x01 then read data Start S