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i2c: frdm-k64f and mimxrt1050_evk I2C driver will cause hardware exception if read/write to a not existing device #12849

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hakehuang opened this issue Jan 30, 2019 · 1 comment
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i2c: frdm-k64f and mimxrt1050_evk I2C driver will cause hardware exception if read/write to a not existing device #12849

hakehuang opened this issue Jan 30, 2019 · 1 comment
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@MaureenHelm
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bug The issue is a bug, or the PR is fixing a bug

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@hakehuang
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hakehuang commented Jan 30, 2019 •
edited

when the i2c driver read from a none existing device will cause hardware exception.

To Reproduce
Steps to reproduce the behavior on frdmk64f

  1. cd samples/sensor/adt7420
  2. mkdir build; cd build
  3. cmake -DBOARD=frdm_k64f ..
  4. make
  5. make flash
    Steps to reproduce the behavior on mimxrt1050_evk
  6. cd samples/sensor/adt7420
  7. mkdir build; cd build
  8. cmake -DBOARD=mimxrt1050_evk ..
  9. make
  10. make flash

Expected behavior
we can see from the log there is no such devices

Impact
this is an exception protection issue

Screenshots or console output

***** USAGE FAULT *****
  Illegal use of the EPSR
***** Hardware exception *****
Current thread ID = 0x2000011c
Faulting instruction address = 0x0
Fatal fault in essential thread! Spinning...
======== Target Main Serial Content:   ========
***** USAGE FAULT *****
  Illegal use of the EPSR
***** Hardware exception *****
Current thread ID = 0x2000011c
Faulting instruction address = 0x0
Fatal fault in essential thread! Spinning...

for rt1050

***** USAGE FAULT *****
  Illegal use of the EPSR
***** Hardware exception *****
Current thread ID = 0x2000010c
Faulting instruction address = 0x0
Fatal fault in essential thread! Spinning...

Environment (please complete the following information):

  • OS: Linux
  • Toolchain ( Zephyr SDK)
@hakehuang hakehuang added the bug The issue is a bug, or the PR is fixing a bug label Jan 30, 2019
@hakehuang
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@MaureenHelm

@MaureenHelm MaureenHelm self-assigned this Jan 30, 2019
@MaureenHelm MaureenHelm mentioned this issue Jan 30, 2019
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@mtahirbutt mtahirbutt mentioned this issue Apr 11, 2020
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