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renesas-ra: Add the UART methods uart.txdone() and uart.flush().

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This required to add two functions down the stack to uart.c and ra.sci.c.

- One for telling, whther the transmission is busy.
- One for reporting the size of the TX buffer.

Tested with a EK-RA6M2 board.
This commit is contained in:
robert-hh
2022-09-27 20:40:05 +02:00
parent 9e91764671
commit 988b6e2dae
6 changed files with 49 additions and 2 deletions
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4
docs/library/machine.UART.rst
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@@ -188,7 +188,7 @@ Methods
For the rp2, esp8266 and nrf ports the call returns while the last byte is sent.
If required, a one character wait time has to be added in the calling script.
Availability: rp2, esp32, esp8266, mimxrt, cc3200, stm32, nrf ports
Availability: rp2, esp32, esp8266, mimxrt, cc3200, stm32, nrf ports, renesas-ra
.. method:: UART.txdone()
@@ -201,7 +201,7 @@ Methods
of a transfer is still being sent. If required, a one character wait time has to be
added in the calling script.
Availability: rp2, esp32, esp8266, mimxrt, cc3200, stm32, nrf ports
Availability: rp2, esp32, esp8266, mimxrt, cc3200, stm32, nrf ports, renesas-ra
Constants
---------