I think that Serial2 is mapped to the audio jack serial port, ttyS1, but won't actually work because usually there is a login process attached to the port. If the configuration is changed so that login is not on the port, it should work fine.
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I think that Serial2 is mapped to the audio jack serial port, ttyS1, but won't actually work because usually there is a login process attached to the port. If the configuration is changed so that login is not on the port, it should work fine.