简介

MCU开发中一般有很多地方需要对寄存器进行操作。

寄存器操作

#define SET_BIT(REG, BIT)     ((REG) |= (BIT))#define CLEAR_BIT(REG, BIT)   ((REG) &= ~(BIT))#define READ_BIT(REG, BIT)    ((REG) & (BIT))#define CLEAR_REG(REG)        ((REG) = (0x0))#define WRITE_REG(REG, VAL)   ((REG) = (VAL))#define READ_REG(REG)         ((REG))

GPIO操作 (以stm32为例)

// define I/O port process marco
#define MID_CONCAT_RAW(a, b) a##b
#define MID_CONCAT(a, b) MID_CONCAT_RAW(a, b)#define MID_ARG1(a, b) a
#define MID_ARG2(a, b) b/*** @brief  设置引脚高电平*/
#define vSetDo_1(p) GPIO_WriteBit(MID_CONCAT(GPIO, MID_ARG1(p)), MID_CONCAT(GPIO_Pin_, MID_ARG2(p)), Bit_SET)
/*** @brief  设置引脚低电平*/
#define vSetDo_0(p) GPIO_WriteBit(MID_CONCAT(GPIO, MID_ARG1(p)), MID_CONCAT(GPIO_Pin_, MID_ARG2(p)), Bit_RESET)
/*** @brief  do contact set pin blink*//*** @brief  读取引脚电平*/
#define MID_GET_PORT_BIT(p) GPIO_ReadInputDataBit(MID_CONCAT(GPIO, MID_ARG1(p)), MID_CONCAT(GPIO_Pin_, MID_ARG2(p)))

#define		PORT_ONE				C,4MID_GET_PORT_BIT(PORT_ONE);
vSetDo_0(PORT_ONE);