Shutting down debug session

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

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