相机驱动
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@veye_xumm
[图片]没有用到power on引脚 -
@lin
开发板csi接口,上面是我们自己画的一个转接板 -
@lin 我们相机的i2c是3.3V电平标准,不知你原理图上有没有做电平转换?
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@veye_xumm enable线外接的底板是1.8v能触发工作吗
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@lin i2c 、vcc都做了电平转换为3.3v。enable端不做电平转换直接由底板(1.8V)引出连接给相机,会导致无法正常工作吗?最低要求电压是多少?用i2cdetect -y 7检测不到设备

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@lin

我们的SYS_RSTn对应的是你的17,现在是NC的,我们内部有上拉,这样i2c应该直接就是通的。你是接到i2c-7上了吗?另外,你的fpc线方向有没有插反了? -
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@lin poweron这个引脚在哪里,相机给出的22个引脚中没有
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@veye_xumm复位端未与底板连接,由于相机上上拉的原因应该是属于持续工作的状态吧? 驱动没加载上的话,i2cdetect 能检测到挂载设备吗?

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@veye_xumm 用示波器测量i2c应该是什么情况能说明设备被连上了呢?
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@lin
可以用mv_mipi_i2c.sh脚本执行读写寄存器操作,同时观察示波器上面波形。
i2c协议和寄存器介绍:https://wiki.veye.cc/index.php/MV_Series_MIPI_Camera_Register_Map/zh -
@veye_xumm 测量没反应?
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@lin 测量相机的RST引脚电压是1.6v,相机可以正常工作吗?
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This post is deleted! -
@veye_xumm 相机使能端(Sys_RSTn)正常工作下电平最低要求是多少
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@023 1.6V可以的。

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你们有没有测试过相机的供电是否正确?
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