Safe & Sound @ E14-CLEWE @#10_430hsite

7 Jul 2017

Posted by jkutzsch in Safe and Sound on Jul 5, 2017 11:44:00 PM

E14-C.L.E.W.E. INDEX:

#1_”The word.”	#6_Energia!
#2_”The Science.”	#7_Blog7
#3_"GPS decisions."	#8_GPS_Issues
#4_"GPS arrives!"	#9_GPS_Stalled
#5_"The box, the box!"	#10_43ohSite

Okay as discussed in the last post I am still project blocked by a failure on my part to get the TI talking with the GPS. Undoubtedly something simple but as of yet unknown.

I had found mention of someone else having similar issues and getting answers on the forum 43oh site. It appears that basic browsing and searching without a user account will yield no information so here I will connect to that site.

Here we have the basic view once you have connected and NOT logged in with a user account. Looks promising!

(Well Technically I would think the view would be the same even if you are logged in.)

Here we have the result of trying to go deeper into any of those interesting forums and not having an account.

If somewhere it states you need to have an account to view those threads I missed that in my excitement to discover a solution to my problem. :-)

So lets follow the tested advice from rachaelp on registering and then the site opening up for access!

Ah the basics, time to sign up and get some more emails!

Oddly enough it didn't show it in the cut and paste but you do get a popup saying to check your email and confirm. So off to my email and clickity click.

Tada. I am now a registered user and and able to jump into the Energia subforum! Woohoo!

Let's try doing a search on gps to see if that pulls up what I have been looking for and anyone else experimenting with it.

Nope 0 results found. Hmm...

GSM? Nope.

By the way, don't be too quick in your search efforts or else you get this!

So no go with searching. Or at least with my new experience to their search options. I did try using the author option and apply the gentleman's name that was talking about the problem on the other site but couldn't find that either.

So let's start browsing through the forum manually. Only 1,524 topics available. :-)

Wait what? Why is this back? I went to double check something while writing the blog...

Ah it seems that it has a super fast auto-logoff. Sigh...

Not sure if they kick you at an hour or what. You can see I am the newest member of an hour ago.

Okay. End of the blog for now. I will need time to browse those 1.5k topics. :-)

Top Comments

Jan Cumps over 7 years ago in reply to Jan Cumps

Here's the evidence

I've entered the word test in the serial monitor, with newline option created.
That arrived at Serial().
The sketch writes that further to Serial1().
The sample of my logic analyser is that signal on Serial(1) P3.3.
The UART analyser shows that the data came trough.

I've also tested the other way around.

Pushed a few bytes into the Serial1() via Bus Pirate.
The garbage is then , in the sketch, forwarded to Serial() (too lazy to look up ascii codes ). The result is visible in the Monitor output.
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Jan Cumps over 7 years ago

Tested with the SerialPassthrough sketch:

/*
  SerialPassthrough sketch

...


   Created 23 May 2016
   by Erik Nyquist
*/


void setup() {
  Serial.begin(9600);
  Serial1.begin(9600);
}


void loop() {
  if (Serial.available()) {      // If anything comes in Serial (USB),
    Serial1.write(Serial.read());   // read it and send it out Serial1 (pins 0 & 1)
  }


  if (Serial1.available()) {     // If anything comes in Serial1 (pins 0 & 1)
    Serial.write(Serial1.read());   // read it and send it out Serial (USB)
  }
}

What you write via USB goes out via P3.3, what you write to P3.2 goes to USB

Jan Cumps over 7 years ago in reply to Jan Cumps

I got some traffic when using Serial1:
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Jan Cumps over 7 years ago in reply to Jan Cumps

According to this post, :
Serial1 is the hardware pins 3 (RX) & 4(TX)
One can but try
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Jan Cumps over 7 years ago in reply to Jan Cumps
So what is happening is:
The energia Serial lib of the MSP432 uses UART 0.
P1.2/UCA0RXD/UCA0SOMI
P1.3/UCA0TXD/UCA0SIMO

That is routed to the USB.

So if you wire these two pins to your shield (edit: and remove the jumpers, certainly the one labeled RXD on the LaunchPad - if you leave the one marked TXd you may get away with it and have the additional advantage that traffic still goes to the USB), it should work:

Attention, 3V3 max !!

Alternative, I think you can create a new HardwareSerial object with parameter 2.
The standard lib creates an object for UART0 and UART1
```
/*
 * Pre-Initialize Serial instances
 */
HardwareSerial Serial(0, uartReadCallback, uartWriteCallback);
HardwareSerial Serial1(1, uartReadCallback1, uartWriteCallback1);
```
You'd have to create an additional one for uart #2 to get signals to 3.2 and 3.3

Inspiration:

https://github.com/energia/msp432r-core/blob/master/variants/MSP_EXP432P401R/SerialObjects.cpp
https://github.com/energia/msp432r-core/blob/master/cores/msp432/ti/runtime/wiring/HardwareSerial.cpp
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