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[参考译文] LP5562:有关使用 LP5562的问题

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Other Parts Discussed in Thread: LP5562

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https://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/930875/lp5562-the-problem-about-using-lp5562

器件型号:LP5562

您好!

我们在电路板上使用 LED 驱动器(LP5562)、但 LED 不会亮起。

我们测量电压并检查 EN 引脚、它们都是正常的。

我们 通过 Linux 上的 i2c 工具对其进行控制。

以下是一些信息:

命令:

/bin/echo 0 >/sys/bus/i2c/devices/0-0032/run_engine
/bin/echo 3 >/sys/bus/i2c/devices/0-0032/select_engine

[188292550] lp5562 0-0032:lp5562的直接固件加载失败,错误-2
[188292641] lp5562 0-0032:返回到用户帮助程序

(此错误 不会影响 其他情况下的使用、例如 :e2e.ti.com/.../893392)

/bin/echo "RGB">/sys/bus/i2c/devices/0-0032/engine_mux
/bin/echo 1 >/sys/bus/i2c/devices/0-0032/firmware/lp5562/loading
/bin/echo "4063D00000000000">/sys/bus/i2c/devices/0-0032/firmware/lp5562/data
/bin/echo 0 >/sys/bus/i2c/devices/0-0032/firmware/lp5562/loading
/bin/echo 1 >/sys/class/i2c-dev/i2c-0/device/0-0032/run_engine

I2C 波形:

器件连接:

请帮助我们检查问题。

谢谢

Marten