T507板子的i2c设备AT24读写有问题，这是打印的日志
# i2cdetect -y 30123456789abcdef[ 41.699500] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x20, dev addr: 0x3)
00: [ 41.713112] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x20, dev addr: 0x4)
-- -- [ 41.723653] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x20, dev addr: 0x5)
-- [ 41.733444] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x20, dev addr: 0x6)
-- [ 41.743060] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x20, dev addr: 0x7)
-- [ 41.752624] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x20, dev addr: 0x8)
-- [ 41.762181] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x20, dev addr: 0x9)
-- [ 41.771751] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x20, dev addr: 0xa)
-- [ 41.781311] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x20, dev addr: 0xb)
-- [ 41.790880] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x20, dev addr: 0xc)
-- [ 41.800438] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x20, dev addr: 0xd)
-- [ 41.810049] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x20, dev addr: 0xe)
-- [ 41.819614] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x20, dev addr: 0xf)
--
10: [ 41.829207] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x20, dev addr: 0x10)
-- [ 41.839364] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x20, dev addr: 0x11)
-- [ 41.849035] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x20, dev addr: 0x12)
-- [ 41.858687] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x20, dev addr: 0x13)
-- [ 41.868353] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x20, dev addr: 0x14)
-- [ 41.878042] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x20, dev addr: 0x15)
-- [ 41.887715] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x20, dev addr: 0x16)
-- [ 41.897356] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x20, dev addr: 0x17)
-- [ 41.907031] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x20, dev addr: 0x18)
-- [ 41.916688] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x20, dev addr: 0x19)
-- [ 41.926486] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x20, dev addr: 0x1a)
-- [ 41.936098] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x20, dev addr: 0x1b)
-- [ 41.945776] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x20, dev addr: 0x1c)
-- [ 41.955455] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x20, dev addr: 0x1d)
-- [ 41.965101] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x20, dev addr: 0x1e)
-- [ 41.974772] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x20, dev addr: 0x1f)
--
20: [ 41.984433] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x20, dev addr: 0x20)
-- [ 41.994625] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x20, dev addr: 0x21)
-- [ 42.004288] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x20, dev addr: 0x22)
-- [ 42.013947] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x20, dev addr: 0x23)
-- [ 42.023596] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x20, dev addr: 0x24)
-- [ 42.033260] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x20, dev addr: 0x25)
-- [ 42.042956] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x20, dev addr: 0x26)
-- [ 42.052630] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x20, dev addr: 0x27)
-- [ 42.062277] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x20, dev addr: 0x28)
-- [ 42.071944] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x20, dev addr: 0x29)
-- [ 42.081601] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x20, dev addr: 0x2a)
-- [ 42.091260] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x20, dev addr: 0x2b)
-- [ 42.100904] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x20, dev addr: 0x2c)
-- [ 42.110611] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x20, dev addr: 0x2d)
-- [ 42.120272] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x20, dev addr: 0x2e)
-- [ 42.129952] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x20, dev addr: 0x2f)
--
30: [ 42.139603] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x48, dev addr: 0x30)
-- [ 42.149771] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x48, dev addr: 0x31)
-- [ 42.159456] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x48, dev addr: 0x32)
-- [ 42.169122] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x48, dev addr: 0x33)
-- [ 42.178784] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x48, dev addr: 0x34)
-- [ 42.188434] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x48, dev addr: 0x35)
[ 42.196677] random: crng init done
-- [ 42.201930] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x48, dev addr: 0x36)
-- [ 42.211642] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x48, dev addr: 0x37)
-- [ 42.221295] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x20, dev addr: 0x38)
-- [ 42.230961] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x20, dev addr: 0x39)
-- [ 42.240625] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x20, dev addr: 0x3a)
-- [ 42.250339] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x20, dev addr: 0x3b)
-- [ 42.260151] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x20, dev addr: 0x3c)
-- [ 42.269796] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x20, dev addr: 0x3d)
-- [ 42.279529] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x20, dev addr: 0x3e)
-- [ 42.289189] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x20, dev addr: 0x3f)
--
40: [ 42.298864] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x20, dev addr: 0x40)
-- [ 42.309063] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x20, dev addr: 0x41)
-- [ 42.318721] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x20, dev addr: 0x42)
-- [ 42.328385] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x20, dev addr: 0x43)
-- [ 42.338034] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x20, dev addr: 0x44)
-- [ 42.347695] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x20, dev addr: 0x45)
-- [ 42.357348] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x20, dev addr: 0x46)
-- [ 42.367011] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x20, dev addr: 0x47)
-- [ 42.376708] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x20, dev addr: 0x48)
-- [ 42.386370] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x20, dev addr: 0x49)
-- [ 42.396024] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x20, dev addr: 0x4a)
-- [ 42.405685] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x20, dev addr: 0x4b)
-- [ 42.415350] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x20, dev addr: 0x4c)
-- [ 42.425045] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x20, dev addr: 0x4d)
-- [ 42.434717] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x20, dev addr: 0x4e)
-- [ 42.444376] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x20, dev addr: 0x4f)
--
50: [ 42.454309] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x48, dev addr: 0x51)
50 -- [ 42.464217] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x48, dev addr: 0x52)
-- [ 42.474129] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x48, dev addr: 0x53)
-- [ 42.483857] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x48, dev addr: 0x54)
-- [ 42.493529] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x48, dev addr: 0x55)
-- [ 42.503190] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x48, dev addr: 0x56)
-- [ 42.512897] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x48, dev addr: 0x57)
-- [ 42.522564] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x48, dev addr: 0x58)
-- [ 42.532214] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x48, dev addr: 0x59)
-- [ 42.541925] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x48, dev addr: 0x5a)
-- [ 42.551572] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x48, dev addr: 0x5b)
-- [ 42.561230] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x48, dev addr: 0x5c)
-- [ 42.570894] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x48, dev addr: 0x5d)
-- [ 42.580562] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x48, dev addr: 0x5e)
-- [ 42.590226] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x48, dev addr: 0x5f)
--
60: [ 42.599911] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x20, dev addr: 0x60)
-- [ 42.610106] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x20, dev addr: 0x61)
-- [ 42.619766] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x20, dev addr: 0x62)
-- [ 42.629439] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x20, dev addr: 0x63)
-- [ 42.639096] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x20, dev addr: 0x64)
-- [ 42.648762] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x20, dev addr: 0x65)
-- [ 42.658451] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x20, dev addr: 0x66)
-- [ 42.668116] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x20, dev addr: 0x67)
-- [ 42.677772] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x20, dev addr: 0x68)
-- [ 42.687450] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x20, dev addr: 0x69)
-- [ 42.697102] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x20, dev addr: 0x6a)
-- [ 42.706779] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x20, dev addr: 0x6b)
-- [ 42.716439] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x20, dev addr: 0x6c)
-- [ 42.726114] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x20, dev addr: 0x6d)
-- [ 42.735780] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x20, dev addr: 0x6e)
-- [ 42.745445] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x20, dev addr: 0x6f)
--
70: [ 42.755111] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x20, dev addr: 0x70)
-- [ 42.765282] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x20, dev addr: 0x71)
-- [ 42.774968] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x20, dev addr: 0x72)
-- [ 42.784635] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x20, dev addr: 0x73)
-- [ 42.794284] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x20, dev addr: 0x74)
-- [ 42.803953] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x20, dev addr: 0x75)
-- [ 42.813609] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x20, dev addr: 0x76)
-- [ 42.823323] sunxi_i2c_do_xfer()1940 - incomplete xfer (status: 0x20, dev addr: 0x77)
--
#
#
# i2cget -y 3 0x50 1
0xff
#
#
# i2cset -y 3 0x50 1 0x44
#
#
# i2cget -y 3 0x50 1
0xff
大佬点拨一下 请问您用的是飞凌的底板吗？还有这个at24是啥呢？是eeprom还是温湿度传感器呢？如果不是用的飞凌的底板您可以检查是不是您硬件上i2c没有做上拉电阻。
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