The Serial Port Remapping of STM32F103

[hiroshima]

Recently I am researching STM32,and I bought one from site. I would like to sharing the process about serial port weight map of STM32F103C4T6A here.

This is the datasheet of SRM32F103C4T6A which I used to do experiments. The weight mapping step is given below:
1). First,open the remapping clock and pin clock accross I/O pot after USART remapped.
                             RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB | RCC_APB2Periph_AFIO,ENABLE);
2). I/O pot is starting to remap.
                             GPIO_PinRemapConfig(GPIO_Remap_USART1,ENABLE);
3). Configure Remapping pins,it need I/O which is configured after remapping.
                             GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6;
                             GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
                             GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
                             GPIO_Init(GPIOB, &GPIO_InitStructure);


                              GPIO_InitStructure.GPIO_Pin = GPIO_Pin_7;
                              GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
                               GPIO_Init(GPIOB,&GPIO_InitStructure);