Unable to implement receive data on UART interrupt on STM32F103C8T6

[JPanc.1]

I bought STM32 blue pill(STM32F103C8T6) and started learning on STM32 usng STM32CubeMX and TRUEStudio and successfully LED and UART2 transmitt.

But I want to implement UART receive using interrupt but unable to do so.I have tried as per example but still not getting data.Can any body help me with this?

void HAL_UART_RxCpltCallback(UART_HandleTypeDef *UartHandle)

is i right function for uart recive interrupt??? 

[Clive1 (HNL)]

>>arguments passed to sprintf call seems strange in my opinion. Not sure to understand what you want to do here

Evidently a memcpy(), at least the OP understood not to use the live buffer.

[S.Ma]

Other alternate way to interrupt would be to use a big RAM buffer cyclically updated by DMA from USART RX.

As long as main loop check it out before it could be overflow, at least reception is manageable.

[Guenael Cadier]

My question was rather related to use of sprintf function, according to its prtotype : sprintf(char *str, const char *format, ...).

Calling :

sprintf(Tx_buffer,Rx_buffer,sizeof(Rx_buffer));

with sizeof(Rx_Buffer) as arg3, with Rx_buffer containing "Hello world" still seems strange to me.