installing espruino on stm32F100 based diy project

Hi, I am trying to install Espruino on stm32f100 chip and use it in my DIY nixie clock project. I found that STM32VLDISCOVERY board is based on the exact same chip. I used it's firmware and flashed it on my chip using JTAG programmer (made from a raspberry pi + openOCD). The programmer says that the firmware is flashed successfully, but when I connect to the chip's uart with minicom -o -b 9600 -D /dev/ttyAMA0 i get nothing. There is no Espruino console.

Here is how my wiring looks like:

Here is what I had tried:
1) Checked my wiring (I tried it in multiple ways. I also tried to connect to my MacBook using USB-TTL dongle, I can see the dongle from Espruino ide, but it cannot connect to the chip)
2) I followed this forum post
3) I made a custom build based on STM32VLDISCOVERY and changed the package to LQFP48 to match my chip

I also found some weird behavior.
In boards/STM32VLDISCOVERY.py in devices section, there are JTAG pins defined

'JTAG' : {
        'pin_MS' : 'A13',
        'pin_CK' : 'A14',
        'pin_DI' : 'A15'
}

But after flashing the programmer can't connect to the chip again without "connect under reset" procedure, which means that this pins have been overwritten.

Any clues will be appreciated