8000 Serial attach interrupt by gicking · Pull Request #95 · arduino/ArduinoCore-sam · GitHub
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Serial attach interrupt #95

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Serial attach interrupt #95

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8447da1
added optional custom handler to Serial interrupt
gicking Nov 8, 2019
266e10e
add Serialx.attachInterrupt_Send
gicking Nov 23, 2019
8b14299
updated modification date
gicking Nov 23, 2019
1557f9c
activate custom send_ISR also for 1B write
gicking Nov 24, 2019
5f0b387
replace tabs with (four) whitespaces
Apr 1, 2020
790ff2c
fixes #103 Misleadingly 'else' clause
Apr 1, 2020
7339907
Merge branch 'Serial_attachInterrupt'
gicking Dec 23, 2021
8000
b64442c
Revert "Merge branch 'Serial_attachInterrupt'"
gicking Dec 23, 2021
c3ef454
Revert "Revert "Merge branch 'Serial_attachInterrupt'""
gicking Dec 23, 2021
3841d06
added optional argument for user ISR function
gicking Dec 24, 2021
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activate custom send_ISR also for 1B write 
- activate custom send_ISR also for 1B write
- previous solution only worked for >=2B writes
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@gicking
gicking committed Nov 24, 2019
commit 1557f9c6bf5e860af1b4ca29ad4aa73b49802f23
7 changes: 7 additions & 0 deletions cores/arduino/UARTClass.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -168,7 +168,14 @@ size_t UARTClass::write( const uint8_t uc_data )
{
// Bypass buffering and send character directly
_pUart->UART_THR = uc_data;

// if custom routine attached, activate TXBUFE interrupt -> delay call until transmission finished
// must be done here explicitely because UART_TXRDY interrupt is not activated here
if (_isrTx != NULL) {
_pUart->UART_IER = UART_IER_TXEMPTY;
}
}

return 1;
}

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