Tiago Medicci Serrano
9cf7d80bab
The internal implementation of `file_mq_receive` did not allow receiving a message from an interrupt handler. Although it is not possible to wait for a message in an interrupt context, it is perfectly possible to retrieve already-existing messages from the message queue. This commit modifies file_mq_timedreceive_internal to enable checking the message list and, if no messages exist, it returns immediately. This enables receiving any existing messages in an interrupt context. Signed-off-by: Tiago Medicci Serrano <tiago.medicci@espressif.com>
Apache NuttX is a real-time operating system (RTOS) with an emphasis on standards compliance and small footprint. Scalable from 8-bit to 64-bit microcontroller environments, the primary governing standards in NuttX are POSIX and ANSI standards. Additional standard APIs from Unix and other common RTOSs (such as VxWorks) are adopted for functionality not available under these standards, or for functionality that is not appropriate for deeply-embedded environments (such as fork()).
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