Hello @RPOOJ
Thanks for the feedback.
I test it with using STM32F401RETx then i had no problem.
How to reproduce:
----------------------------
- Open CubeMX the select board :STM32F401RETx
- Select ADC: IN0 ==> * Go to Parameter Setting: Enable Continuous Conversion Mode, *Go to Rank: Sampling Time: 480 Cycles
- Activate RCC==> High Speed Clock (HSE): Crystal/Ceramic Resonator

- Generate code
- In the main.c file : create a variable to store values from ADC

- Start ADC

- Compile
- Download and debug

Regards,
Nesrine