gpsim - The gnupic Simulator / Bugs / #230 PIC12F1822: RS232 Tx doesn't work unless Rx also enabled

#230 PIC12F1822: RS232 Tx doesn't work unless Rx also enabled

Milestone: None

Status: closed-fixed

Owner: Roy Rankin

Labels: None

Priority: 5

Updated: 2017-09-16

Created: 2017-09-15

Creator: Remy Horton

Private: No

With the PIC12F1822 chip, RS232 transmission (TXEN=1) does not work unless reception (CREN=1) is also enabled. With the attached source code, output on gpsim's UART only appears if CREN=1 is uncommented.

Tested using revision 2422 from Subversion.

I have also tested the compiled firmware (with and without CREN=1) on a physical PIC12F1822 chip, and in both these cases RS232 output is seen, unlike with gpsim.

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serial.c

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Roy Rankin - 2017-09-16

status: open --> closed-fixed

assigned_to: Roy Rankin

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Roy Rankin - 2017-09-16

Fixed SVN 2423. Start baud rate generator even if only tx enables.

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PIC12F1822: RS232 Tx doesn't work unless Rx also enabled

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#230 PIC12F1822: RS232 Tx doesn't work unless Rx also enabled

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