Enable RX pin pull-ups using AsynchroSerial component

jgirard1 — Wed, 08 Feb 2012 07:23:30 GMT

I am working with the HC(S)08 and have integrated the AsynchroSerial component. I need to enable the pull-up on the RxD pin, so the pin does not float when the component is disabled.

There are no pull-up options for the port pin in the AsynchroSerial properties.

I see some pull-up options for Port E in the CPU component, but this is for unused pins only.

I tried adding a Init_GPIO component and of course this says there is a conflict with the AsynchroSerial component and it won't build.

Without just resorting to writing directly to the port register in the code, what is the correct way to control the pull-up register for the RxD pin?

Re: Enable RX pin pull-ups using AsynchroSerial component

ProcessorExpert — Wed, 08 Feb 2012 23:46:01 GMT

Hello,

I am sorry, unforrtunatelly there is no such option available in PEx for HCS08 now. However it should be supported in the future within the planned PinMuxig tool.

For now as workaround there is the only possibility to handle the pull-up functionality in user code.

best regards
Vojtech Filip
Processor Expert Support Team

topic Re: Enable RX pin pull-ups using AsynchroSerial component in Processor Expert Software

Enable RX pin pull-ups using AsynchroSerial component

Re: Enable RX pin pull-ups using AsynchroSerial component