MCP4725 DAC with LabVIEW LINX and GPIO on a Raspberry Pi 5

[shdkia]

Hello everybody,

I am using an MCP4725 DAC with LabVIEW LINX and GPIO on a Raspberry Pi 5. In my program, I am running a timed loop with a 300-microsecond period.

Although the MCP4725 supports an update rate of 200 kHz, my loop consistently overruns, meaning each iteration takes longer than 300 microseconds.

I tried increasing the I²C bus baud rate on the Raspberry Pi to 400 kHz, but this did not improve the results.

You can find the diagram in the attached image.

I would appreciate your kind assistance.

Best regards,
shdkia

[shdkia]

Hello everyone,

I found the solution. Please check the following link:

https://forums.raspberrypi.com/viewtopic.php?t=146946

It is necessary to modify the Raspberry Pi configuration and increase the baud rate to 1 MHz.