stm32f101 and bootloader does not work ?

vaclav · ‎2009-11-22

Posted on November 23, 2009 at 04:37

16-32micros · ‎2011-05-17

Posted on May 17, 2011 at 13:31

Hi,

Did you checked all hardware connections for STM32 ( VDD , VDDA etc...), do not forget to reset the device as well. if you provide a screen-shot of the failure and schematics this will help me to debug your case.

Cheers,

STone-32

vaclav · ‎2011-05-17

Posted on May 17, 2011 at 13:31

Hello all,

I tried to use bootloader for stm32f101cb chip. I connected FT2232 AD0 to PA10, AD1 to PA9 (USART1), set VccIO to 3.3V, connected VccIO and GND to STM32 chip. BOOT0 = 1 and BOOT1 = 0. Then there are 3 LEDs on PC13-15 on the board, crystal 7.37MHz and that is all.

I downloaded Flash Loader Demonstrator 2.1, set 115200Bd, COM5 (where FT2232 resides) and even parity. But I can not connect to the STM32 chip.

Can somebody confirm that bootloader works on this chip ? What did I do wrong ?

Thank you in advance.

vaclav · ‎2011-05-17

Posted on May 17, 2011 at 13:31

Hello STone,

I have curently VDDA unconnected. All other Vss/Vdd pins are connected. Can it cause this problem ? I am going to try JTAG debugger to test if the device is not completely dead.

Then I draw the schematic and send it to you together with the screenshot.

16-32micros · ‎2011-05-17

Posted on May 17, 2011 at 13:31

That's It : VDDA is a must , it controls the PLL, PVD and all internal clocks including RC clock etc..

vaclav · ‎2011-05-17

Posted on May 17, 2011 at 13:31

Hello STOne,

thank you for help, after connecting Vdda I can communicate with bootstrap.

Thank you very much !