Hi, ALL! i have two questions: 1, After RTEMS_BSPOPTS_SET([STM32F4_ENABLE_I2C1],[*],[1]) enable i2c1 then what i need to do? 2, how to write the app code, is there an example? Thanks in advance! -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.rtems.org/pipermail/users/attachments/20190321/17c4d0c4/attachment.html>