int i= sum(2,3)*4;注意，宏是替换，上面展开是 2+3*4 因为优先级问题，3*4先算。如果加了括号 define sum(a,b) (a+b)(2+3)*4 得到预期的结果
GPIO_TypeDef * port; uint16_t pin; }GPIO_PackDef; 定义数据类型为“引脚封装结构体”的leds[]数组,并初始化 GPIO_PackDef leds[8]= { {GPIOA, GPIO_PIN_4}, //PA4引脚,接LED灯D1 {GPIOA, GPIO_PIN_3}, //PA3引脚 {GPIOA, GPIO_PIN_2}, //PA2引脚 ...
#define GPIO_PortSourceGPIOA ((uint8_t) 0x00) 相关内容 a不同的人对贫穷的定义有不同的看法。 The different person has the different view to the poor definition.[translate] acarry the main substance of meaning 运载意思主要物质[translate] ...
取GPIOA的地址并强制转换为uint32_t这种类型 楼主在学单片机么
A.GPIO_EXTILineConfig(GPIO_PortSourceGPIOC,GPIO_PinSource0);B.GPIO_EXTILineConfig(GPIO_PortSourceGPIOA,GPIO_PinSource13);C.GPIO_EXTILineConfig(GPIO_PortSourceGPIOB,GPIO_PinSource1);D.GPIO_EXTILineConfig(GPIO_PortSourceGPIOC,GPIO_PinSource13);相关...
TM4C1290NCPDT: Port A GPIO interruptPriya Nadathur70 Expert 2795 points Part Number: TM4C1290NCPDT Looking at Table 2-9 from the data sheet on page 111, there is only one interrupt for Port A. Does this mean there can be only one GPIO from port A that services an interrupt?
the project I'm working on uses the NXP imx8xq processor and I need to access a GPIO port from a Linux driver by performing Read or Write operations on all the port bits in order to access the internal registers of an FPGA.A first Write sets the address o...
the project I'm working on uses the NXP imx8xq processor and I need to access a GPIO port from a Linux driver by performing Read or Write operations on all the port bits in order to access the internal registers of an FPGA.A first Write sets the add...
around with the file to re-arrange the pins of a port (for e.g. pin sequence in GPA port may go something like: GPIO 0, GPIO 3, GPIO 1, GPIO 4 ... or any other combination/sequence) so that when I write data to the port, it is distr...
题目 用STM32F4标准外设库开发中,语句“SYSCFG_EXTILineConfig(EXTI_PortSourceGPIOA, uint8_t EXTI_PinSource4);”的作用是?( ) A.将外部中断4映射到GPIOA的所有引脚上B.将外部中断4与PA4引脚进行映射C.为PA4引脚的中断设置优先级D.使能GPIOA管脚的时钟 相关知识点: 试题来源: 解析 B 反馈 收藏 ...