Google Coral I2C2上0x68的设备是什么?
我正在尝试将外部RTC(ADDR 0x68,WITTY PI 3)连接到I2C2(总线1)上的Google Coral Dev Board。但是i2cdetect
即使没有连接我的外部RTC,也以0x68的形式显示设备。我在这台公共汽车上的设备上在文档(SOM或开发板)中找不到任何东西。 Adafruit的Lada Ada Lady也发现了它 https://learn.adafruit.com/circuitpypypypython-on-google-coral-coral-linux-blinka?view=all#check-uart-uart-i2c--i2c-and-spi-3027971-20 < /a>。
有人知道吗?我可以指向医生吗?
I am trying to connect an external RTC (addr 0x68, on Witty Pi 3) to my Google Coral dev board on I2C2 (bus 1). But i2cdetect
shows a device at 0x68 even without my external RTC connected. I can't find anything in the docs (SOM or dev board) about a device on this bus. Lady Ada at Adafruit has found it also https://learn.adafruit.com/circuitpython-on-google-coral-linux-blinka?view=all#check-uart-i2c-and-spi-3027971-20 .
Does anyone know about this? Could point me at a doc?
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我去了Google支持:
“ 0x68是PCIE的振荡器,我相信它需要与EdgetPu进行通信,因此不应被禁用。”
因此,机智的pi 3是不开始的。我很幸运有一个机智的PI 4。
I went to google support:
"0x68 is the oscillator for PCIe, I believe it needed for communication with the EdgeTPU, therefore it should not be disabled."
So Witty Pi 3 is a non-starter. I'm lucky there's a Witty Pi 4.