DFU Not switching to boot loader mode from iOS SDK

RE: DFU Not switching to boot loader mode from iOS SDK

thcooke77 — Wed, 28 Aug 2019 16:25:09 GMT

We figured it out, the main difference from the Android version is that the iOS Connect app tries to set the DFU advertising name. Our implementation cannot support this and was causing a reset, instead we just return DFU_RSP_OP_CODE_NOT_SUPPORTED and it started working.

Thanks,

Terry

RE: DFU Not switching to boot loader mode from iOS SDK

Sigurd — Tue, 27 Aug 2019 12:36:08 GMT

Could you flash the debug version of the bootloader, set a breakpoint at dfu_enter_check() in nrf_bootloader.c, and see if the function returns true or false.

RE: DFU Not switching to boot loader mode from iOS SDK

thcooke77 — Mon, 26 Aug 2019 20:47:23 GMT

Thanks for your suggestion.

I tried with the iOS nRF Connect app and got similar results. When I initiate the DFU from the iPhone nRF Connect app and have the same app open on Android and scanning I see the device come back in app mode right away. If I switch to boot loader mode from the android app, then I am able to connect with the iPhone nRF Connect app and the DFU works.

RE: DFU Not switching to boot loader mode from iOS SDK

Sigurd — Mon, 26 Aug 2019 14:20:06 GMT

[quote userid="63608" url="~/f/nordic-q-a/51365/dfu-not-switching-to-boot-loader-mode-from-ios-sdk"]The problem is that from iOS we are unable to switch the device in to boot loader mode.[/quote][quote userid="63608" url="~/f/nordic-q-a/51365/dfu-not-switching-to-boot-loader-mode-from-ios-sdk"]When I try on iOS, either with the nRF Toolbox app or using the SDK in my code to initiate the DFU. The device never starts advertising as a DfuTarg, instead it just restarts in app mode.[/quote]

Do you see the same issue when using nRF Connect app for iOS ?

RE: DFU Not switching to boot loader mode from iOS SDK

Tim — Fri, 23 Aug 2019 18:03:46 GMT

Hi ...

Not sure if this is helpful. I have OTA DFU working (also using the Nordic DFU SDK). However, the target device is RF Digital's Simblee which uses Arduino IDE and RF's proprietary library for BLE. So not sure if this applies to applications developed using the Nordic SDK. My sense is it should be the same on the iOS side.

When connected to the device via BLE, our iOS app executes (sorry, Objective C):

DFUFirmware *dfuFirmware = [[DFUFirmware alloc] initWithUrlToZipFile:bundledFirmwareURL];

DFUServiceInitiator *dfuInitiator = [[DFUServiceInitiator alloc] initWithCentralManager:self.centralManager target:myPeripheral];

dfuInitiator.delegate = self;

dfuInitiator.progressDelegate = self;

dfuInitiator.logger = self;

[dfuInitiator withFirmware:dfuFirmware];

self.dfuController = [dfuInitiator start];

bundledFirmwareURL is URL to zip file containing new app. myPeripheral is the connected BLE peripheral. This class implements CBCentralManagerDelegate and CBPeripheralDelegate methods as well as methods for DFUServiceDelegate, DFUProgressDelegate and LoggerDelegate.

#pragma mark - DFUServiceDelegate methods

- (void)dfuStateDidChangeTo:(enum DFUState)state

{

if (state == DFUStateConnecting) {

NSLog(@"dfuStateDidChangeTo: DFUStateConnecting");

} else if (state == DFUStateStarting) {

NSLog(@"dfuStateDidChangeTo: DFUStateStarting");

} else if (state == DFUStateEnablingDfuMode) {

NSLog(@"dfuStateDidChangeTo: DFUStateEnablingDfuMode");

} else if (state == DFUStateUploading) {

// update UI ...

NSLog(@"dfuStateDidChangeTo: DFUStateUploading");

} else if (state == DFUStateValidating) {

NSLog(@"dfuStateDidChangeTo: DFUStateValidating");

} else if (state == DFUStateDisconnecting) {

NSLog(@"dfuStateDidChangeTo: DFUStateDisconnecting");

} else if (state == DFUStateCompleted) {

// update UI ...

NSLog(@"dfuStateDidChangeTo: DFUStateCompleted");

self.centralManager.delegate = self;

} else if (state == DFUStateAborted) {

NSLog(@"dfuStateDidChangeTo: DFUStateAborted");

}

if (state == DFUStateCompleted || state == DFUStateAborted) {

self.dfuController = nil;

}

- (void)dfuError:(enum DFUError)error didOccurWithMessage:(NSString *)message

{

NSLog(@"dfuError: %@", message);

self.dfuController = nil;

}

#pragma mark - DFUProgressDelegate methods

- (void)dfuProgressDidChangeFor:(NSInteger)part outOf:(NSInteger)totalParts to:(NSInteger)progress currentSpeedBytesPerSecond:(double)currentSpeedBytesPerSecond avgSpeedBytesPerSecond:(double)avgSpeedBytesPerSecond

{

NSLog(@"dfuProgressDidChangeFor: %ld", (long)progress);

// update UI ...

}

#pragma mark - LoggerDelegate

methods

- (void)logWith:(enum LogLevel)level message:(NSString *)message

{

NSLog(@"logWith: %@", message);

}