Does the STM32 on the Espruino support UART with 7bit length?

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Gordon
Great, let me know how it goes!

How about Serial.setup({databits:7,stopbits:2}) - you could add this to JshUSARTInfo in jshardware.h pretty easily, and it'd be nice and compatible with anything that didn't support it (or that supported other modes).

Maybe just add the following in jshardware:
```
if (databits==7 && stopbits==2) ...
else if (databits==8 && stopbits==1) ...
else jsWarn("Specified combination of stop and data bits is not available");
```
does that sound ok?

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