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ADXL345 problem #1

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simeondmr opened this issue Oct 28, 2021 · 2 comments
Open

ADXL345 problem #1

simeondmr opened this issue Oct 28, 2021 · 2 comments

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@simeondmr
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Hello,

I'm using your library for the ADXL345.
The connection with ESP32 is as follows:

SCL -> GPIO_22
SDA -> GPIO_21

The problem is that during the adxl345_init there are these errors:

  • i2c_read_byte timeout
  • i2c_write_byte failed

How can I solve them?

Thanks!
@craigpeacock
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Simeon,

My thoughts:

  • Do you have pull up resistors on the I2C?
  • Can you see a clock signal on a protocol analyser, DSO?

@simeondmr
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Hello,

My mistake, I had forgotten to wire CS with VIO(now I can read the DEVICE_ID)
Now I have another problem...The adxl345 never launches any interrupts, and if I connect a LED(for intettupt) from INT1 to GND I have a I2C communication error.

Can you help me with this problem?
Thanks

Simeon

@craigpeacock craigpeacock reopened this Dec 6, 2021
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@craigpeacock @simeondmr