#define __HAL_AFIO_REMAP_TIM2_PARTIAL_1() do{ CLEAR_BIT(AFIO->MAPR, AFIO_MAPR_TIM2_REMAP); \
SET_BIT(AFIO->MAPR, AFIO_MAPR_TIM2_REMAP_PARTIALREMAP1); \
}while(0U)

CUBEMX version4.22.1

used stm32f103vct6

调试模式是sw MAPR寄存器不能直接读   直接读写回去导致sw掉线

Bits 26:24 SWJ_CFG[2:0]: Serial wire JTAG configuration
These bits are write-only (when read, the value is undefined
). They are used to configure the
SWJ and trace alternate function I/Os. The SWJ (Serial Wire JTAG) supports JTAG or SWD
access to the Cortex debug port. The default state after reset is SWJ ON without trace. This
allows JTAG or SW mode to be enabled by sending a specific sequence on the JTMS /
JTCK pin.
000: Full SWJ (JTAG-DP + SW-DP): Reset State
001: Full SWJ (JTAG-DP + SW-DP) but without NJTRST
010: JTAG-DP Disabled and SW-DP Enabled
100: JTAG-DP Disabled and SW-DP Disabled
Other combinations: no effect

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