PB3, PB4 and PA15 pins doesn't work (SOLVED)

[robomechs]

To enable PB3, PB4 and PA15 pins you have to disable JTAG:
GPIO_PinRemapConfig(GPIO_Remap_SWJ_JTAGDisable, ENABLE);

[usbcnc]

I checked in the code in main.c

[alk1913]

hello,i am very excited whit this for of grbl.i am a user of grbl in arduino,bat my experience whit this board(STM32f103 is really good ,i get the spindle PWM wor nice,and the coolant flo0d (PB3),isn t work,i remap tp PA9 and on this moment i not have troubles!!!THANKS ALL

[SailWithChips]

Hello, thanks a lot for your work.
I've done same like alk1913 and working succesful but I'm not able to have PA15 as probe input working as expected:
I added on main.c (line 92 - 95):
#if defined (STM32F103C8) GPIO_PinRemapConfig(GPIO_Remap_SWJ_Disable, ENABLE);

Also tested with (and not succesful):
GPIO_PinRemapConfig(GPIO_Remap_SWJ_JTAGDisable, ENABLE);

I have allways fixed 3.17 volts on PA15... could anyone help me with this?.

Thanks a lot in advanced,

[SailWithChips]

Hello it seems to work propperly now. I did what mention on Probe pin invert FIX #32, adding this in probe.c:
uint16_t probe_invert_mask;