使用以下代码，我试图让 hwPort 中的结构从内存地址 0x48001000 开始。我现在卡住了，我该怎么做
struct PortGPIOs
{
volatile uint32_t MODER; /*!< GPIO port mode register, Address offset: 0x00 */
volatile uint32_t OTYPER; /*!< GPIO port output type register, Address offset: 0x04 */
volatile uint32_t OSPEEDR; /*!< GPIO port output speed register, Address offset: 0x08 */
volatile uint32_t PUPDR; /*!< GPIO port pull-up/pull-down register, Address offset: 0x0C */
volatile uint32_t IDR; /*!< GPIO port input data register, Address offset: 0x10 */
volatile uint32_t ODR; /*!< GPIO port output data register, Address offset: 0x14 */
volatile uint16_t BSRRL; /*!< GPIO port bit set/reset low register, Address offset: 0x18 */
volatile uint16_t BSRRH; /*!< GPIO port bit set/reset high register, Address offset: 0x1A */
volatile uint32_t LCKR; /*!< GPIO port configuration lock register, Address offset: 0x1C */
volatile uint32_t AFR[2]; /*!< GPIO alternate function registers, Address offset: 0x20-0x24 */
volatile uint32_t BRR; /*!< GPIO bit reset register, Address offset: 0x28 */
};
class hwPort {
public:
hwPort(PortGPIOs *, uint32_t, uint32_t, uint32_t);
uint32_t read();
void readOr(uint32_t);
void readAnd(uint32_t);
void write(uint32_t);
void writeOr(uint32_t);
void writeAnd(uint32_t);
private:
PortGPIOs *GPIO;
};
最佳答案
只需在构造函数中初始化GPIO成员变量，如下所示:
GPIO = (PortGPIOs *) 0x48001000;
[注意:如果您愿意，可以使用 C++ 风格的转换 - 最终结果是相同的。]
关于C++ 设置结构地址，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/28325028/