sendCommand() not working with Arduino MKR GSM 1400 about tfmini-plus HOT 5 CLOSED

Hello,

Thank you for the sketch. With no output at all, the execution must stop somewhere before the first Serial.println() instruction. Could you add a Serial.println("Hi there!"); after Serial.begin() and another after Serial1.begin()?

Although I am not familiar with the Arduino MKR GSM 1400, I understand that MKR boards address pins D13 and D14 as Serial1.
Would you be kind enough to send me a picture of your setup?

Thanks,

Bud Ryerson
San Francisco

from tfmini-plus.

Hello,

I tried adding that and it prints without problems, so it really seems that execution stops at sendCommand().

Yes, Serial1 should be at D13 and D14, and that is how I connected it, here is the photo of my setup:

from tfmini-plus.

Great! Thanks.
I tried to make this library as bullet-proof as I could imagine - so that it would return something and not just hang. I'm really sorry about the situation. I want to help, and I want to understand what's going on.

I am mystified. You got past Serial1.begin(); but that doesn't return much information. Now please show me how you get distance data. Maybe after delay(500); you could add some code like this?

int16_t tfDist = 0;
tfmP.getData( tfDist);
Serial.println( tfDist);

And if that doesn't work, try something more basic, like:

if( Serial1.available()) Serial.println( Serial1.read());
else Serial.println( "Serial1 data not available.");

I hope did that right. I'm not at the lab. Please Let me know what happens.

Thanks,
Bud

from tfmini-plus.

Hi,

I managed to resolve my issue, although not directly. First I used the provided GUI to change the communication mode to I2C (because that's what I'll be using for this project). After changing the mode, sending commands still didn't work. However, when I powered my Arduino from bench power supply in addition to connecting it to the PC via USB, everything started behaving normally.

I don't know if power was the culprit with serial communication also, but currently everything is working as expected with I2C version of this library, so this issue can be closed.

Thank you for your help!

from tfmini-plus.

That sounds right, and it's good information for the next person.
Thanks.

from tfmini-plus.