[GitHub] kasjer opened a new pull request #1633: nrf52xx uart: Fix UART close function

[GitBox <gi...@apache.org>]

kasjer opened a new pull request #1633: nrf52xx uart: Fix UART close function
URL: https://github.com/apache/mynewt-core/pull/1633
 
 
   Wait for UART TX FIFO drain was subject to race condition.
   Function waited for nrf_uart->EVENTS_ENDTX while this register
   was also read and cleared by interrupt handler.
   In case interrupt code read register first hal_uart_close()
   would end up in infinite loop.
   
   Fixed code reads variable that is set when transfer is finished.

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