Where is wiringX source used in duo-sdk? I need to modify it

Duo
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mpu9250-oled-fs8
mpu9250-oled-fs81024×751 337 KB

I’ve always used the Inversense MPU9250 package. They are out of production, but you can still find them for purchase. They are cheap to buy, I’m going from memory, but about $5-10.

Since the MPU9250 has separate I2C addresses for the acc/gyro and the magnetometer unit pay careful attention to the I2C bus frequency. I’ve found 400KHz to be about the fastest reliable I2C bus frequency to use.

Also remember you need to tie the SCL-ECL and SDA-EDA pins together. The magnetometer I2C address is on the aux (extended) bus (ECL/EDA). (that is done underneath the board in the picture with jumpers – along with jumpers from the power and ground rails to Vcc and Gnd pins.)

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Nice setup
I found the same board on eBay for $8.
Thank you for sharing this info.

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BTW
I noticed the Duo has debug functions.
Do you work with JTAG debugging tools?
Regards

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Not yet – I haven’t screwed it up that bad – yet… The serial interface is a nice failsafe and I’ve cannibalized a USB-serial cable, but as long as the Ethernet connection is up, no real need to use it. With other boards like TI MSP boards, etc. with no network interface, the debug probe is all you have.

WHoops - wrong thread – that was for the Pi forum…