BME68x_SensorAPI icon indicating copy to clipboard operation
BME68x_SensorAPI copied to clipboard

Error when a different device is connected to the SPI bus

Open pedrorovi opened this issue 6 months ago • 0 comments

Hello, I am working with some BMEs and de SD Card in the same bus, to use them with BSEC. BMEs working as expected, but SD no... However, if I removed the BMEs from the bus, isolating the SD, it works. With the logic analyzer, I can see that MISO is 0 or 1, depending on BMEs power supply. If there are powered, MISO is 1, if not, 0.
Someone with similar problems?

Update: Another problem with I2C. I use a tca9548a to select between BMEs and other sensors. I can detect a BME if I connect it directly between the MUX and the microcontroller. But, I cannot detect it when it is connected to one MUX channel, whereas the rest of the sensors works as expected.

pedrorovi avatar Jun 12 '25 10:06 pedrorovi