Nano IOT 33 - WifiOTA Sketch Download

[JEG8]

Hello,

I am using OTA sketch download using the example code provided (OTASketchDownloadWifi).

The example sketch uses 38724 bytes (14%) of program storage space. I am trying to download a sketch that uses 148164 bytes (56%) of program storage space. Maximum storage on my device is 262144 bytes. I am receiving the following error.

Update status code: 200
Server returned update file of size 147676 bytes
There is not enough space to store the update. Can't continue with update.

Is there any way that I can make this work besides reducing the size of my update?

Thanks for any help you can provide and thank you for this library.

[JAndrassy]

you can use SD card to store the update binary (or to store the data which are now in the sketch and make it big)

[JEG8]

Thank you. I had the same thought but when I try to use OTASketchDownload_SD for the Arduino Nano 33 IOT, it says the board is unsupported. I think this is due to the SDU library not supporting the board.

\Arduino15\packages\arduino\hardware\samd\1.8.13\libraries\SDU\src\SDU.cpp:44:4: error: #error "Unsupported board!"
#error "Unsupported board!"
^~~~~

What do you recommend I use for storing the binary to the SD?

The SDU Library has the following in SDU.cpp

#include <Arduino.h>

#include "SDU.h"

attribute ((section(".sketch_boot")))
unsigned char sduBoot[0x4000] = {
#if defined(ARDUINO_SAMD_ZERO)
#include "boot/zero.h"
#elif defined(ARDUINO_SAMD_MKR1000)
#include "boot/mkr1000.h"
#elif defined(ARDUINO_SAMD_MKRZERO)
#include "boot/mkrzero.h"
#elif defined(ARDUINO_SAMD_MKRFox1200)
#include "boot/mkrfox1200.h"
#elif defined(ARDUINO_SAMD_MKRGSM1400)
#include "boot/mkrgsm1400.h"
#elif defined(ARDUINO_SAMD_MKRWAN1300)
#include "boot/mkrwan1300.h"
#elif defined(ARDUINO_SAMD_MKRWIFI1010)
#include "boot/mkrwifi1010.h"
#elif defined(ARDUINO_SAMD_MKRNB1500)
#include "boot/mkrnb1500.h"
#elif defined(ARDUINO_SAM_ZERO)
#include "boot/mzero.h"
#else
#error "Unsupported board!"
#endif
};

[JAndrassy]

arduino/ArduinoCore-samd#645

[JEG8]

arduino/ArduinoCore-samd#645

Thank you. I followed the steps and it worked.