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ndoo opened this issue Mar 4, 2025 · 2 comments · Fixed by #2701
Closed

Support U[S]ART Inversion on STM32U0 #2669

ndoo opened this issue Mar 4, 2025 · 2 comments · Fixed by #2701
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duplicate This issue or pull request already exists enhancement New feature or request
Milestone
2.11.0

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@ndoo
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ndoo commented Mar 4, 2025

STM32U0 (and possibly other parts) support level inversion with the following:

huartx.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_TXINVERT_INIT;
huartx.AdvancedInit.TxPinLevelInvert = UART_ADVFEATURE_TXINV_ENABLE;

Please support these through the Arduino core.

Alternative workarounds include inverting the content before sending, or using an inverting buffer, but supporting this natively would be preferable.

Additional context

This is to support SDI-12 using the single-pin mode of the USART.
@ndoo ndoo added the enhancement New feature or request label Mar 4, 2025
@fpistm fpistm added the duplicate This issue or pull request already exists label Mar 4, 2025
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fpistm commented Mar 4, 2025

Hi @ndoo
this issue is a duplicate of #1160 and already reference in #1418.
Feel free to contribute, for example UART Tx Rx pin swap function was added by a contributor in #2601.

@fpistm fpistm closed this as completed Mar 4, 2025
@fpistm fpistm mentioned this issue Mar 4, 2025
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@ndoo
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ndoo commented Mar 5, 2025

Hi @fpistm, thanks for capturing it on the list.

For now my plan is to add the inversion in hardware as I'm also adding a level shifter to 5V, but if I find some time I will take a look at #2601.

ndoo added a commit to ndoo/Arduino_Core_STM32 that referenced this issue Mar 27, 2025
@ndoo
feat(uart): support UART Tx Rx invert function
fa90084 
This enables UART Tx and Rx invert function on STM32 families that support it.

In order to enable Tx and Rx invert, call respectively:

```c++
Serial1.setTxInvert();
Serial1.setRxInvert();
```

Fixes: stm32duino#1160 stm32duino#2669
See also: stm32duino#1418

Signed-off-by: Andrew Yong <[email protected]>
ndoo added a commit to ndoo/Arduino_Core_STM32 that referenced this issue Mar 27, 2025
@ndoo
feat(uart): support UART Tx Rx invert function
b499ca7 
This enables UART Tx and Rx invert function on STM32 families that support it.

In order to enable Tx and Rx invert, call respectively:

```c++
Serial1.setTxInvert();
Serial1.setRxInvert();
```

Fixes: stm32duino#1160 stm32duino#2669
See also: stm32duino#1418

Signed-off-by: Andrew Yong <[email protected]>
@ndoo ndoo mentioned this issue Mar 27, 2025
Merged
3 tasks
ndoo added a commit to ndoo/Arduino_Core_STM32 that referenced this issue Mar 28, 2025
@ndoo
feat(uart): support UART Tx Rx invert function
af08f5c 
This enables UART Tx and Rx invert function on STM32 families that support it.

In order to enable Tx and Rx invert, call respectively:

```c++
Serial1.setTxInvert();
Serial1.setRxInvert();
```

Fixes: stm32duino#1160 stm32duino#2669
See also: stm32duino#1418

Signed-off-by: Andrew Yong <[email protected]>
ndoo added a commit to ndoo/Arduino_Core_STM32 that referenced this issue Mar 28, 2025
@ndoo
feat(uart): support UART Tx, Rx and data invert function
d5cab93 
This enables UART Tx, Rx and data invert function on STM32 families that support it.

In order to enable Tx, Rx and/or data invert, call respectively:

```c++
Serial1.setTxInvert();
Serial1.setRxInvert();
Serial1.setDataInvert();
```

Fixes: stm32duino#1160 stm32duino#2669
See also: stm32duino#1418

Signed-off-by: Andrew Yong <[email protected]>
ndoo added a commit to ndoo/Arduino_Core_STM32 that referenced this issue Mar 28, 2025
@ndoo
feat(uart): support UART Tx, Rx and data invert function
e17aa0d 
This enables UART Tx, Rx and data invert function on STM32 families that support it.

In order to enable Tx, Rx and/or data invert, call respectively:

```c++
Serial1.setTxInvert();
Serial1.setRxInvert();
Serial1.setDataInvert();
```

Fixes: stm32duino#1160 stm32duino#2669
See also: stm32duino#1418

Signed-off-by: Andrew Yong <[email protected]>
ndoo added a commit to ndoo/Arduino_Core_STM32 that referenced this issue Mar 29, 2025
@ndoo
feat(uart): support UART Tx, Rx and data invert function
0b023a6 
This enables UART Tx, Rx and data invert function on STM32 families that support it.

In order to enable Tx, Rx and/or data invert, call respectively:

```c++
Serial1.setTxInvert();
Serial1.setRxInvert();
Serial1.setDataInvert();
```

Fixes: stm32duino#1160 stm32duino#2669
See also: stm32duino#1418

Signed-off-by: Andrew Yong <[email protected]>
@fpistm fpistm added this to the 2.11.0 milestone Mar 31, 2025
@fpistm fpistm linked a pull request Mar 31, 2025 that will close this issue
feat(uart): support UART Tx, Rx and Data invert function #2701
Merged
3 tasks
fpistm pushed a commit that referenced this issue Mar 31, 2025
@ndoo @fpistm
feat(uart): support UART Tx, Rx and data invert function
3a60776 
This enables UART Tx, Rx and data invert function on STM32 families that support it.

In order to enable Tx, Rx and/or data invert, call respectively:

```c++
Serial1.setTxInvert();
Serial1.setRxInvert();
Serial1.setDataInvert();
```

Fixes: #1160 #2669
See also: #1418

Signed-off-by: Andrew Yong <[email protected]>
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STM32 core based on ST HAL
Status: To do
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2.11.0
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feat(uart): support UART Tx, Rx and Data invert function ndoo/Arduino_Core_STM32
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