Fix for #4565 (rx fifo length), protect access to rx_buffer (#4568) · bryceschober/Arduino@7ac8bd4 · GitHub

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Fix for esp8266#4565 (rx fifo length), protect access to rx_buffer (e…

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…sp8266#4568)

* Fix for esp8266#4565 (rx fifo length), protect access to rx_buffer

* Fix typo

* reworked to separate safe from unsafe functions, factorized some code, constness

* additional rework for uart_rx_fifo_available()

* swapped unsafe function definition order

* Remove static for overrun string

* Some shorthand for perf and readability

(cherry picked from commit 29580e8)

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devyte authored and bryceschober committed Apr 5, 2018

1 parent 695cd94 commit 7ac8bd4