Shutting down debug session

Did you check what is in "__HAL_AFIO_REMAP_I2C1_ENABLE"? Did you debugged this code?
(as I know this are very buggy libraries)

You have to do 2 things:
1. Enable AFIO:

RCC->APB2ENR |= RCC_APB2ENR_AFIOEN;

2. Remap I2C1:

AFIO->MAPR |= AFIO_MAPR_I2C1_REMAP;

Check what this procesure changes more than this.

Hi,
When i try debug "__HAL_AFIO_REMAP_I2C1_ENABLE();" line, debugger is disconnecting.

#define __HAL_AFIO_REMAP_I2C1_ENABLE() SET_BIT(AFIO->MAPR, AFIO_MAPR_I2C1_REMAP)

My all codes auto generated by STM32CubeMX. But I can not debug it.

HAL_MspInit function includes __HAL_RCC_AFIO_CLK_ENABLE() line command.
HAL_I2C_MspInit function includes __HAL_AFIO_REMAP_I2C1_ENABLE() line command.

My CubeMX and Aouto generated Keil MDK5 Projects:
yadi.sk/.../qxGw7dPW3EgrVz
yadi.sk/.../qxGw7dPW3EgrVz

Firmware Package Name and Version:
FW_F1 V1.4.0

MCU: STM32F103VCT6

Thank You

When i generate same project for STM32f103RBT6 using MXcube, the problem does not occur on STM32f103RBT6 board. But same code download to STM32F103VCT6 boards shutting down debug session. I have different STM32F103VCT6 boards. Thanks

I have a similar problem with a board with an STM32F100RC.
The debugger stops when MX_I2C1_Init() is called.

__HAL_AFIO_REMAP_I2C1_ENABLE();

is expanded to

SET_BIT(AFIO->MAPR, AFIO_MAPR_I2C1_REMAP)

but the SET_BIT macro can't be called with the register AFIO->MAPR
Bits 24-26 of this register are write only so you can't use a read/modify/write instruction on this register.

I solved the problem using this instruction instead:

AFIO->MAPR = (AFIO->MAPR & (!AFIO_MAPR_SWJ_CFG_Msk)) | AFIO_MAPR_SWJ_CFG_JTAGDISABLE | AFIO_MAPR_I2C1_REMAP;

Use at your own risk ;-)

P.S.
or instead of SET_BIT/CLEAR_BIT a MODIFY_REG macro should always be used with register AFIO->MAPR