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Vipul Rahane commented on MYNEWT-782: ------------------------------------- This might be case of clock stretching as I encountered the same with BNO055. I have a tickets opened for it: https://issues.apache.org/jira/browse/MYNEWT-631. Linking it to this ticket to give more context. There is also a capture attached to the ticket. > Atmel SAMD21 i2c probing > ------------------------ > > Key: MYNEWT-782 > URL: https://issues.apache.org/jira/browse/MYNEWT-782 > Project: Mynewt > Issue Type: Bug > Security Level: Public(Viewable by anyone) > Reporter: Marko Kiiskila > > I have 2 test i2c devices. I can do 'i2c_scan' on either, but will discover > the device only once. > On subsequent runs the device does not report being present. Should > investigate if this is because a) the device itself refuses to respond or b) > hal i2c driver on SAMD21 is faulty. -- This message was sent by Atlassian JIRA (v6.4.14#64029)