---------------------考试---------------------------学资学习网---------------------押题------------------------------.软件:KeilMDK芯片:STM32F103/STM32F107串口数量:4备注:4个串口均配置为DMA读取//串口1初始化函数voiduart1_init(u32bound){//GPIO端口设置GPIO_InitTypeDefGPIO_InitStructure;USART_InitTypeDefUSART_InitStructure;NVIC_InitTypeDefNVIC_InitStructure;RCC_APB2PeriphClockCmd(RCC_APB2Periph_U...