Hi there,
We've been busy using the AWS IoT from the embedded C within the IDF. We also use shadow and everything works nicely, be it that initializing/retrieving the shadow state can sometimes cause random crashes which we have still under investigation.
We run a publishing loop just like the examples and for all messages < 512 bytes publishing an MQTT message on AWS IoT works like a charm. But as messages will be around 1000 and 2000 bytes in real life application, we run into the MQTT_TX_BUFFER_TOO_SHORT_ERROR (-33) message.
These settings are defined within the aws_iot_config.h file, but overriding these settings to 1024 or 2048 when sending just over 512 bytes will still return the MQTT_TX_BUFFER_TOO_SHORT_ERROR error.
Could this be a bug?
Kind regards,
Martijn
MQTT_TX_BUFFER_TOO_SHORT_ERROR on AWS IoT embedded C
Re: MQTT_TX_BUFFER_TOO_SHORT_ERROR on AWS IoT embedded C
I know this message is a bit old now, but i was running into the same issue today.
Solution is, you dont just change it in the .h file, as that will be overwritten by the values in "make menuconfig"
so: make menuconfig -> component config -> amazon web services .. -> MQTT Tx Buffer length (512)
Change that to another size, make sure that your thread created for MQTT will be of sufficient size to hold it though.
Good luck!
Solution is, you dont just change it in the .h file, as that will be overwritten by the values in "make menuconfig"
so: make menuconfig -> component config -> amazon web services .. -> MQTT Tx Buffer length (512)
Change that to another size, make sure that your thread created for MQTT will be of sufficient size to hold it though.
Good luck!
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