Hello, I am using an STM32F103RB MCU in a specific Hardware design with J-Link Base Compact and IAR or J-Link commander as tools to flash and debug. The Hardware was always working fine (it is a final product of medical customer) until I flashed a software which implements the stop mode (deep sleep mode) management (by setting the SLEEPDEEP bit in the System control register (SCB_SCR) and configuring the PWR_CR register). Here is the code: C Source Code (27 lines) In the Software after calling W…