Questions tagged [mkr-gsm-1400]

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2answers
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MKR1400-how do I troubleshoot a POST request?

I'm successfully sending a GET request (in the setup function, to load certificates,) but my POST request fails with a bunch of AT errors. I suspect this has to do with the way I'm formatting the POST....
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1answer
2k views

Multiple definition error when linking firmware.elf

I just can't wrap my head around on how to properly work with multiple files. My code has been getting quite big so I decided to split all the classes into one file each. So I'm left with 6 files: ...
1
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1answer
229 views

half duplex for Atmel SAMD21

I'm using Arduino MKR GSM 1400. I know this board uses Atmel SAMD21 and SAMD21 support half duplex (USART with full-duplex and single-wire half-duplex configuration). My question is, How Can I ...
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0answers
70 views

Arduino MKR QoS 1 logging with ArduinoMqttClient

I am collecting data with Arduino MKR GSM 1400 and sending data to Azure Cloud (IOT HUB). Currently I use ArduinoMqttClient ArduinoMqttClient My question is, how to ensure both parties accepted QoS1 ?...
0
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1answer
255 views

MKR GSM 1400 Works only when connected to computer

My MKR GSM 1400 works fine when connected to a computer (powered USB) and after opening a serial connection to it. It does not when I plug it into a power supply. My power supply is a 5V 3A with a ...
0
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1answer
208 views

Arduino MKR GSM 1400: Can I tell from code if the power has tripped

Is there a way to tell if an Arduino MKR GSM 1400 has lost power and has to rely on the connected battery? Ideally, I'd like to do this without adding additional circuitry. Alternatively, can I ...
0
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2answers
632 views

Arduino MKR GSM 1400 SSL client example fails to connect

I am using the GsmSSLWebClient example which comes with the MKRGSM library. The original example works just fine, I get the arduino ascii logo. But when I change the URL the arduino doesn't get any ...
0
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0answers
11 views

How to send AT commands to the ubox modem on MKR NB 1500

I am trying to send AT commands to the modem to keep the modem always active. I tried the File > Examples > MKRNB > Tools > SerialSarapassThrough example, but that gave me a +CME ERROR: ...
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0answers
33 views

Arduino MKR1400 HTTP requests fail

I am using a MKR1400 with an activated Arduino SIM and trying to set up a basic HTTP SSL connection over GSM. I'm using the example web client sketch found here: https://www.arduino.cc/en/Tutorial/...
0
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0answers
101 views

Triggering a Sleep Wake-up Event using analog output from a triple axis accelerometer?

I am working on a project that uses a Arduino MKR GSM 1400 and a ADXL335 Accelerometer . I am having trouble setting a interrupt wake up event on one of the GSM's interrupt-capable pin due to the ...