[NTLK] Designing an Internal WiFi Board for MP2x00
jake at allaboutjake.com
Wed Apr 1 21:51:24 EDT 2015
>The connections in the schematics are the right way.
The N2 Docs say the RTS and CTS lines are inverted: ModemNotRTS and ModemNotCTS.
I read "NotCTS" to mean when CTS is low, the other end is ready to accept data.
I'm seing the opposite behavior though. Unless CTS is High, the Newton doesn't send the data.
The NotRTS line seems to work as expected. It goes low when the port connects.
This is confirmed by a loop back: RTS<->CTS and RX<->TX. It doesn't work with hardware control.
So my board as built will not work with hardware flow control. An extra logic inverter would be needed to flip that signal.
I have made progress on the SerPortSel3 issue. I believe the solution is in the GetPowerMapEntry/SetPowerMap entry functions, but I have some more work to do before I can confirm.
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