出现异常前，使用黑色电工胶带包裹传感器，但能读到数据。 # opt3001_test device = /dev/i2c-2 interval=1000 count=86400 [INFO] Found TI OPT3001 [DEBUG] conversion time:100000us [0.6s]1/86400:opt3001 read failed [1.7s]2/86400:als read: 18.410000lux [2.8s]3/86400:als read: 18.639999lux [3.8s]4/86400:als read: 18.639999lux [4.9s]5/86400:als read: 19.609999lux [5.10s]6/86400:als read: 19.689999lux [6.10s]7/86400:als read: 19.689999lux [7.11s]8/86400:als read: 19.850000lux [8.12s]9/86400:als read: 19.689999lux [9.12s]10/86400:als read: 18.889999lux [10.13s]11/86400:als read: 18.889999lux [11.13s]12/86400:als read: 19.129999lux [12.14s]13/86400:als read: 18.730000lux [13.14s]14/86400:als read: 14.380000lux 出现异常后，使用黑色电工胶带包裹传感器，能读到ID，读不到数据。 # opt3001_test device = /dev/i2c-2 interval=1000 count=10 [INFO] Found TI OPT3001 [DEBUG] conversion time:100000us [0.1s]1/10:opt3001 read failed [1.2s]2/10:opt3001 read failed [2.2s]3/10:opt3001 read failed [3.3s]4/10:opt3001 read failed [4.3s]5/10:opt3001 read failed [5.4s]6/10:opt3001 read failed [6.4s]7/10:opt3001 read failed [7.5s]8/10:opt3001 read failed 打印“opt3001 read failed”的原因是，读到数据寄存器0x00的值为0，此为异常情况。 在出现异常时，使用i2c-tools读写OPT3001的寄存器进行调试，dump出全部寄存器，发现寄存器0x00的值为0 # i2cdump -y 2 0x45 w 0,8 1,9 2,a 3,b 4,c 5,d 6,e 7,f 00: 0000 90c4 0000 ffbf 0078 0280 0000 0000 08: 0000 XXXX 0000 0000 0000 0000 4954 0130 10: 0000 10c4 0000 ffbf 0078 0280 0000 0000 18: 0000 XXXX 0000 0000 0000 0000 4954 0130 20: 0000 10c4 0000 ffbf 0078 0280 0000 0000 28: 0000 XXXX 0000 0000 0000 0000 4954 0130 30: 0000 10c4 0000 ffbf 0078 0280 0000 0000 38: 0000 XXXX 0000 0000 0000 0000 4954 0130 40: 0000 10c4 0000 ffbf 0078 0280 0000 0000 48: 0000 XXXX 0000 0000 0000 0000 4954 0130 50: 0000 10c4 0000 ffbf 0078 0280 0000 0000 58: 0000 XXXX 0000 0000 0000 0000 4954 0130 60: 0000 10c4 0000 ffbf 0078 0280 0000 0000 68: 0000 XXXX 0000 0000 0000 0000 4954 0130 70: 0000 10c4 0000 ffbf 0078 0280 0000 0000 78: 0000 XXXX 0000 0000 0000 0000 4954 0130 80: 0000 10c4 0000 ffbf 0078 0280 0000 0000 88: 0000 XXXX 0000 0000 0000 0000 4954 0130 90: 0000 90c4 0000 ffbf 0078 0280 0000 0000 98: 0000 XXXX 0000 0000 0000 0000 4954 0130 a0: 0000 10c4 0000 ffbf 0078 0280 0000 0000 a8: 0000 XXXX 0000 0000 0000 0000 4954 0130 b0: 0000 10c4 0000 ffbf 0078 0280 0000 0000 b8: 0000 XXXX 0000 0000 0000 0000 4954 0130 c0: 0000 10c4 0000 ffbf 0078 0280 0000 0000 c8: 0000 XXXX 0000 0000 0000 0000 4954 0130 d0: 0000 10c4 0000 ffbf 0078 0280 0000 0000 d8: 0000 XXXX 0000 0000 0000 0000 4954 0130 e0: 0000 10c4 0000 ffbf 0078 0280 0000 0000 e8: 0000 XXXX 0000 0000 0000 0000 4954 0130 f0: 0000 10c4 0000 ffbf 0078 0280 0000 0000 f8: 0000 XXXX 0000 0000 0000 0000 4954 0130 # i2cget -y 2 0x45 0x7E w 0x4954 # # # i2cget -y 2 0x45 0x7F w 0x0130 # # # i2cget -y 2 0x45 0x01 w 0x90c4 # 此时发现基本通信正常，尝试手动写入配置，修改0x01寄存器后，发现数据寄存器0x00的值不为0，取掉包裹传感器的黑色胶带，此时能读到数据。 # i2cset -y 2 0x45 0x01 0x10CE w # # i2cget -y 2 0x45 0x01 w 0x90ce # # i2cget -y 2 0x45 0x00 w 0x0400 # i2cget -y 2 0x45 0x00 w 0x0400 # i2cget -y 2 0x45 0x00 w 0x0400 # i2cget -y 2 0x45 0x00 w 0x0400 # i2cget -y 2 0x45 0x00 w 0x0400 # i2cget -y 2 0x45 0x00 w 0x0400 # i2cget -y 2 0x45 0x00 w 0x0400 # i2cget -y 2 0x45 0x00 w 0x0400 # i2cget -y 2 0x45 0x00 w 0x0400 # i2cget -y 2 0x45 0x00 w 0x0400 # i2cget -y 2 0x45 0x00 w 0x0400 # i2cget -y 2 0x45 0x00 w 0xc01b # i2cget -y 2 0x45 0x00 w 0x9d3b # i2cget -y 2 0x45 0x00 w 0xe23b # i2cget -y 2 0x45 0x00 w 0xb83a # i2cget -y 2 0x45 0x00 w 0xd33b # i2cget -y 2 0x45 0x00 w 0x133e # i2cget -y 2 0x45 0x00 w 0x123f # i2cget -y 2 0x45 0x00 w 0xd23e 发现数据寄存器恢复后，使用程序读取数据，能够正常读到传感器数据： # opt3001_test device = /dev/i2c-2 interval=1000 count=10 [INFO] Found TI OPT3001 [DEBUG] conversion time:100000us [0.1s]1/10:opt3001 read failed [1.2s]2/10:als read: 246.239990lux [2.3s]3/10:als read: 253.919998lux [3.4s]4/10:als read: 254.239990lux [4.4s]5/10:als read: 254.559998lux [5.5s]6/10:als read: 246.559998lux [6.5s]7/10:als read: 228.559998lux [7.6s]8/10:als read: 265.759979lux [8.6s]9/10:als read: 262.559998lux [9.7s]10/10:als read: 258.079987lux 断电，上电，传感器数据依旧正常： [1717647697.375s]36/86400:als read: 253.279999lux [1717647698.375s]37/86400:als read: 252.319992lux [1717647699.376s]38/86400:als read: 252.639999lux [1717647700.377s]39/86400:als read: 254.239990lux [1717647701.377s]40/86400:als read: 253.919998lux [1717647702.378s]41/86400:als read: 252.319992lux [1717647703.379s]42/86400:als read: 252.959991lux [1717647704.379s]43/86400:als read: 253.599991lux [1717647705.380s]44/86400:als read: 252.639999lux [1717647706.380s]45/86400:als read: 255.199997lux [1717647707.381s]46/86400:als read: 255.839996lux [1717647708.382s]47/86400:als read: 255.839996lux [1717647709.382s]48/86400:als read: 257.759979lux [1717647710.383s]49/86400:als read: 255.839996lux [1717647711.383s]50/86400:als read: 255.839996lux [1717647712.384s]51/86400:als read: 257.440002lux [1717647713.385s]52/86400:als read: 259.679993lux [1717647714.385s]53/86400:als read: 261.279999lux 再次读取寄存器，一切正常： # i2cget -y 2 0x45 0x01 w 0x90c4 # # i2cget -y 2 0x45 0x01 w 0x90c4 # i2cget -y 2 0x45 0x00 w 0xce3c # i2cget -y 2 0x45 0x00 w 0xde3c # # i2cdump -y 2 0x45 w 0,8 1,9 2,a 3,b 4,c 5,d 6,e 7,f 00: ba3c 90c4 0000 ffbf 0078 0280 0000 0000 08: 0000 XXXX 0000 0000 0000 0000 4954 0130 10: ba3c 10c4 0000 ffbf 0078 0280 0000 0000 18: 0000 XXXX 0000 0000 0000 0000 4954 0130 20: ba3c 10c4 0000 ffbf 0078 0280 0000 0000 28: 0000 XXXX 0000 0000 0000 0000 4954 0130 30: ba3c 10c4 0000 ffbf 0078 0280 0000 0000 38: 0000 XXXX 0000 0000 0000 0000 4954 0130 40: ba3c 10c4 0000 ffbf 0078 0280 0000 0000 48: 0000 XXXX 0000 0000 0000 0000 4954 0130 50: ba3c 10c4 0000 ffbf 0078 0280 0000 0000 58: 0000 XXXX 0000 0000 0000 0000 4954 0130 60: ba3c 10c4 0000 ffbf 0078 0280 0000 0000 68: 0000 XXXX 0000 0000 0000 0000 4954 0130 70: ba3c 10c4 0000 ffbf 0078 0280 0000 0000 78: 0000 XXXX 0000 0000 0000 0000 4954 0130 80: ba3c 10c4 0000 ffbf 0078 0280 0000 0000 88: 0000 XXXX 0000 0000 0000 0000 4954 0130 90: ba3c 10c4 0000 ffbf 0078 0280 0000 0000 98: 0000 XXXX 0000 0000 0000 0000 4954 0130 a0: ba3c 10c4 0000 ffbf 0078 0280 0000 0000 a8: 0000 XXXX 0000 0000 0000 0000 4954 0130 b0: ba3c 10c4 0000 ffbf 0078 0280 0000 0000 b8: 0000 XXXX 0000 0000 0000 0000 4954 0130 c0: ba3c 10c4 0000 ffbf 0078 0280 0000 0000 c8: 0000 XXXX 0000 0000 0000 0000 4954 0130 d0: ba3c 10c4 0000 ffbf 0078 0280 0000 0000 d8: 0000 XXXX 0000 0000 0000 0000 4954 0130 e0: ba3c 10c4 0000 ffbf 0078 0280 0000 0000 e8: 0000 XXXX 0000 0000 0000 0000 4954 0130 f0: ba3c 10c4 0000 ffbf 0078 0280 0000 0000 f8: 0000 XXXX 0000 0000 0000 0000 4954 0130