void setup()
{
#define num_port 11

Serial.begin(9600);

pinMode(11, OUTPUT);
}


void loop()
{
 delay(2000);

    for(int i=0; i<1000; i++)
    {
     digitalWrite(num_port, 1);
     delay(500);
     digitalWrite(num_port, 0);
     delay(2000);
    }

}

; PlatformIO Project Configuration File
;
;   Build options: build flags, source filter
;   Upload options: custom upload port, speed and extra flags
;   Library options: dependencies, extra library storages
;   Advanced options: extra scripting
;
; Please visit documentation for the other options and examples
; https://docs.platformio.org/page/projectconf.html

[env:STM32F103C8_CLONE]
platform = ststm32
board = genericSTM32F103C8
framework = arduino # arduino, mbed, cmsis, ...
debug_tool = stlink
upload_protocol = stlink # stlink , dfu
build_flags = -Wl,--undefined,_printf_float
upload_flags = -c set CPUTAPID 0x2ba01477 # Working upload for clone
debug_server =
  ${platformio.packages_dir}/tool-openocd/bin/openocd.exe
  -s ${platformio.packages_dir}/tool-openocd/scripts
  -f interface/stlink.cfg
  -c "transport select hla_swd"
  -c "set CPUTAPID 0x2ba01477" # Working debug for clone
  -f target/stm32f1x.cfg
  -c "reset_config none"