HAL_ADC_PollForConversion(&ADC1_Handler,10)

) is a function in STM32 HAL (Hardware Abstraction Layer) library that polls for the conversion of an analog signal by an ADC (Analog to Digital Converter) module.

The function is used to wait for the completion of a conversion process before proceeding with the next set of instructions. It takes as arguments the ADC handle, which defines the ADC module and its parameters, and a timeout value, which specifies the maximum time to wait for the conversion to complete.

Once called, the function waits for the conversion process to complete by continuously checking the status of the ADC until a conversion flag is set. Once the flag is set, the function returns, indicating that the conversion is complete and the converted value can be read from the ADC's data register.

This function is useful in applications where the conversion process needs to be synchronized with other operations in the system. By polling for the completion of the conversion process, the system can ensure that the converted data is available and ready for use before proceeding with other operations that depend on it.