forked from Imagelibrary/rtems
78c84df00c
Problem: The console works fine when only transmitting data from the ERC32, but stops working after a while when receiving data. "Stops working" means, bytes are neither sent nor received from the UART, but the rest of the system keeps functioning (task are executing, the operative system is responsive, etc). Context: - When an RX error occurs, the ERC32 UARTS stop generating RX/TX interrupts until the corresponding error flag in the UART_STATUS are cleared. - The console.c code currently cleans the error flags from the console_isr_x subroutines, but those are NOT called when an RX error occurs. Thus the error flag is never cleaned and then the UARTs stop generating interrupts indefinitely. - The ERC32 UARTs generate a different interrupt when an RX error occurs. Fixed by: - Adding a third interrupt service routine console_isr_error to handle the UART_ERROR trap. This isr cleans the error flags of the channels. - Cleaning the error flags manually just after having initialized the interrupt vectors. This is because if the error flag was already set by the time the interrupt vectors are configured, the interrupts might never be called.
This is the Real-Time Executive for Multiprocessing Systems (RTEMS). The version number for this software is indicated in the VERSION file. See the documentation manuals in doc/ with daily builds available online at http://rtems.org/onlinedocs/doc-current/share/rtems/html/ and released builds at http://www.rtems.org/onlinedocs/releases/ for information on building, installing, and using RTEMS. The INSTALL file tells you to come back here. See the RTEMS Wiki at http://wiki.rtems.org/wiki/index.php/Main_Page for community knowledge and tutorials. RTEMS Doxygen available at http://www.rtems.org/onlinedocs/doxygen/cpukit/html Get help on the mailing lists: * For general-purpose questions related to using RTEMS, use the rtems-users ml: http://www.rtems.org/mailman/listinfo/rtems-users * For questions and discussion related to development of RTEMS, use the rtems-devel ml: http://www.rtems.org/mailman/listinfo/rtems-devel See http://www.rtems.org/bugzilla/ to report a bug.