root@rk3576-buildroot:~# i2cdump -fy 3 0x18 No size specified (using byte-data access) WARNING! This program can confuse your I2C bus, cause data loss and worse! I will probe file /dev/i2c-3, address 0x18, mode byte Continue? [Y/n] y 0 1 2 3 4 5 6 7 8 9 a b c d e f 0123456789abcdef 00: 00 00 60 00 03 11 09 00 00 00 00 09 02 00 80 02 ..`.???....??.?? 10: 00 08 09 02 80 01 00 04 00 00 01 00 00 01 04 00 .?????.?..?..??. 20: 00 00 00 00 cc 00 00 00 00 00 00 00 00 00 00 00 ....?........... 30: 00 00 00 00 01 12 03 02 02 00 00 00 01 01 00 14 ....?????...??.? 40: 0c 00 00 00 6f 38 00 00 00 00 00 ee 10 d8 7e e3 ?...o8.....???~? 50: 00 00 88 00 00 00 00 00 7f 00 00 00 00 00 00 00 ..?.....?....... 60: 7f 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ?............... 70: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 90: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ a0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ b0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ c0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ d0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ e0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ f0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ ===============================Setting to Page 1========================================= root@rk3576-buildroot:~# i2cset -fy 3 0x18 0 01 WARNING! This program can confuse your I2C bus, cause data loss and worse! I will write to device file /dev/i2c-3, chip address 0x18, data address 0x00, data 0x01, mode byte. Continue? [Y/n] y root@rk3576-buildroot:~# i2cdump -fy 3 0x18 No size specified (using byte-data access) WARNING! This program can confuse your I2C bus, cause data loss and worse! I will probe file /dev/i2c-3, address 0x18, mode byte Continue? [Y/n] y 0 1 2 3 4 5 6 7 8 9 a b c d e f 0123456789abcdef 00: 01 00 00 00 00 00 00 00 00 00 00 10 00 00 00 00 ?..........?.... 10: 40 40 40 40 00 00 00 00 00 00 00 00 00 00 00 00 @@@@............ 20: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 30: 00 00 00 00 00 00 40 00 00 40 00 80 80 00 03 00 ......@..@.??.?. 40: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 50: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 60: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 70: 00 00 00 00 00 00 00 00 00 00 00 05 00 00 00 00 ...........?.... 80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 90: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ a0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ b0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ c0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ d0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ e0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ f0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ root@rk3576-buildroot:~#