STM32L476 issue

[julienterrier39]

Posted on February 09, 2016 at 23:18

Hi,

I'm trying to load demo SAI_audio-play from firmware package ''STM32Cube_FW_L4_V1.3.0''  into the flash but I can't, one error send me ==> Error: Flash Download failed  -  Target DLL has been cancelled.My setting in ''option for target'' are:device tab: STM32L476VG debug tab: I use as IDE keil µvision5 and I installed latest version of the linker in Keil/ARM/Stlink/USBdriver. I checked if my version was updated with ''ST-LinkUpgrade'' It's ok.I don't understand where is my pb it seems that nothing is selected in programming algorithm but I tried with ''STM32L4xx 1MB flash'' but the problem stay... 

[Tesla DeLorean]

Posted on February 10, 2016 at 00:02

Try ''Connect : Under Reset'' option, or strapping BOOT0 High. You can't debug a device that powers down.

Will definitely need to have the algorithm selected in the menu.

[julienterrier39]

Posted on February 11, 2016 at 11:21

Thank you, thanks to your piece of advice, I can load the program into the flash memory.

My settings according your specification:Then

[julienterrier39]

Posted on February 11, 2016 at 23:46

I can load te program into flash memory (SAI_AudioPlay) of my µcontroler but there is no sound from my headphone...

So I checked in debug mode and the problem is located in that part of the code: Main.c

/* Check if the buffer has been loaded in flash */
if(*((uint64_t *)AUDIO_FILE_ADDRESS) != 0x017EFE2446464952 ) Error_Handler();

I toggle towards Error_Handlers() function in while(1) loop. I am trying to solve my problem but currently I didn't find where is located the problem. Need some help plz!

[julienterrier39]

Posted on February 13, 2016 at 23:36

Someone can tell me what is the program loaded by default in the STM32L476-disco ?

Example  ==> BSP ?thanks

[julienterrier39]

Posted on February 14, 2016 at 00:14

Ok I did it, just I forgot to load the audio.bin into the flash memory with ST-link utility.

[Amel NASRI]

Posted on February 18, 2016 at 17:04

Hi julien.terrier,

To answer your question: ''Someone can tell me what is the program loaded by default in the STM32L476-disco ?'':It is the project that you find under STM32Cube_FW_L4_V1.3.0\Projects\STM32L476G-Discovery\Demonstrations.-Mayla-

[julienterrier39]

Posted on February 20, 2016 at 12:59

Thank you for your answer.

But someone could exlain me what's meaning of this line of code (from your own project SAI_AudioPlay):

/* Check if the buffer has been loaded in flash */
if(*((uint64_t *)AUDIO_FILE_ADDRESS) != 0x017EFE2446464952 ) Error_Handler();

Especially ==> 0x017EFE2446464952 It's flash size ? Or at least one part ? Thanks

[Tesla DeLorean]

Posted on February 20, 2016 at 16:55

A ''RIFF'' format audio file with length?

RIFF File Format

https://en.wikipedia.org/wiki/Resource_Interchange_File_Format

https://msdn.microsoft.com/en-us/library/windows/desktop/ee415713%28v=vs.85%29.aspx

[julienterrier39]

Posted on February 21, 2016 at 18:08Thank you,  According your answer 

0x017EFE2446464952

Is RIFF file and if I translate in ASCII code I obtain ==>  

0x017EFE2446464952

. =   

RIFF$þ(SOH)~

Better with ST-link utility I can understand your link and chunks storage.