STM32 : get serial RX/TX active state

[jeromecoutant]

Description

We don't report any real issue yet, patch is proposed thanks to some code review.

In serial_tx_active and serial_rx_active functions,
we check the internal state value with

HAL_UART_STATE_BUSY_TX = 0x21U,
HAL_UART_STATE_BUSY_RX = 0x22U,

It seems that value can also be :
HAL_UART_STATE_BUSY_TX_RX = 0x23U,

Pull request type

[x] Fix
[ ] Refactor
[ ] New target
[ ] Feature
[ ] Breaking change

[0xc0170]

commit msg is STM32 serial RX/TX active patch

Should the second paragraph contain the info from description? It's small change but to me that description made it clear what is changing here

[0xc0170]

/morph build

[mbed-ci]

Build : SUCCESS

Build number : 2470
Build artifacts/logs : http://mbed-os.s3-website-eu-west-1.amazonaws.com/?prefix=builds/7361/

Triggering tests

/morph test
/morph uvisor-test
/morph export-build
/morph mbed2-build

[mbed-ci]

Exporter Build : FAILURE

Build number : 2099
Build artifacts/logs : http://mbed-os.s3-website-eu-west-1.amazonaws.com/?prefix=builds/exporter/7361/

[cmonr]

@jeromecoutant Looks like the astyle PR has caused this to need a rebase.

[jeromecoutant]

Rebase done

[cmonr]

/morph build

[mbed-ci]

Build : SUCCESS

Build number : 2473
Build artifacts/logs : http://mbed-os.s3-website-eu-west-1.amazonaws.com/?prefix=builds/7361/

Triggering tests

/morph test
/morph uvisor-test
/morph export-build
/morph mbed2-build

[mbed-ci]

Test : FAILURE

Build number : 2247
Test logs :http://mbed-os-logs.s3-website-us-west-1.amazonaws.com/?prefix=logs/7361/2247

[mbed-ci]

Exporter Build : SUCCESS

Build number : 2104
Build artifacts/logs : http://mbed-os.s3-website-eu-west-1.amazonaws.com/?prefix=builds/exporter/7361/

[cmonr]

#7361 (comment) This was from the first build. Ignore.

[mbed-ci]

Test : SUCCESS

Build number : 2250
Test logs :http://mbed-os-logs.s3-website-us-west-1.amazonaws.com/?prefix=logs/7361/2250