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STM32F407 Discovery not detected in Win 8.1


flyweight303
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Today I soldered together the core PCB from Smashtv. Looking really forward to building the midibox.

But i ran in a problem and not able to flash the bootloader

When i connect the STM32F407 with a mini-usb cable (only discovery connected via mini usb).

jumpers CN3, JP1,2,3 are connected.LD2 blinks a couple of times and then nothing.

 

The board is laying on my wooden desk.

When i turn it LD1 starts blinking and the 4 colour leds start rotating.

 

I installed the signed Win8.1 driver, and the latest st util.

Sometimes i get an error that the usb device descriptor request failed, or sometimes nothing.

In the device manager i can sometimes find the devices as unkown usb device, selecting the driver by hand fails.

I tried to disable driver signing, varios different versions of the driver but no luck.

 

If i start ST util and try to detect the board the program craches.

 

Are there some problems with win 8.1 (i found quite some issues with win8 but mainly from a while back when there was no signed driver yet) or do i need a specific mini usb cable?

Any hint is very welcome, meanwhile i will get a new mini usbcable.

 

Best regards,

 

Tim

 

 

 

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So i managed to flash the core with the mios bootloader and sequencer 4 application.

I first flashed midibox_seq_v4_088_pre9 but the sd card is not detected (4GB fat32).

Messages: SD card not mounted

 

If i take the sd in and out while connected to miosstudio nothing happened.

 

i reverted to midibox_seq_v4_087, and also tried the GM midi driver but MIOSStudio fails to see the SD card.

 

I used the following reader, and soldered pin 3 and 4 together.

http://katalog.we-online.de/em/datasheet/693061010911.pdf

 

Pinount from sdcard holder solderjoints to the STM32F4 core board.

-8 not connected

-7 PA6

-6 GND

-5 SCK PA5

-4 VDD

-3 GND

-2 PC5

-1 P82

-9 GND

 

The sd cards holder case is also connected to ground. Does anyone see a mistake? how should any SDcard be connected to the Coreboard? otherwise i can still try it with wires.

How i can further test if the coreboard is soldered ok?

The 1k resistor network is soldered with the letters faced to the right of the board.The ic's are connected as displayed on the board.

 

Any help more then welcome,

 

Best regards

 

Tim

Edited by flyweight303
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When is send the SDCARD command via MIOS studio then get error: reading CID, CSD  -256, SD Card not connected.

Is there some way to force the card detection on the socket to be always thrue?

I might soldered the socket wrong so the card detection does not work.

Edited by flyweight303
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Still no luck with the SDcard,

All pins are connected ok.

 

9 NC

1 PB2

2 PA7

3 GND

4 VDD 3v

5 PA5

6 GND

7 PA6

8 NC

 

SD cards Shield connected to GND

When connected to micro usb LD1 is blinking.

 

When ejecting or inserting the SD card nothing hapens.

3 v is available on pin 4 and 2 data lines

 

The correct IC's in the sockets, the resistor network connect with common pin on 1.

 

After flashing the seq4 app should some jumpers be removed?

 

 

 

 

 

post-21175-0-43204100-1428169400_thumb.p

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