STM32H7的FMC扩展IO使用位域操作更省事，使用M3和M4内核的芯片还可以自动编译成硬件方式

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怎么叫都可以|

楼主 | 2018-8-3 20:44 | 只看该作者回帖奖励

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芯片, 编译, 硬件, 内核, fm

M3和M4支持硬件方式的位域操作，而M7内核不支持。
定义：
typedef struct
{
      uint32_t tGPRS_TERM_ON : 1;
      uint32_t tGPRS_RESET :1;
      uint32_t tNRF24L01_CE :1;
      uint32_t tNRF905_TX_EN :1;
      uint32_t tNRF905_TRX_CE :1;

      uint32_t tNRF905_PWR_UP :1;
      uint32_t tESP8266_G0 :1;
      uint32_t tESP8266_G2 :1;

      uint32_t tLED1 :1;
      uint32_t tLED2  :1;
      uint32_t tLED3  :1;
      uint32_t tLED4 :1;
      uint32_t tTP_NRST :1;
      uint32_t tAD7606_OS0  :1;
      uint32_t tAD7606_OS1  :1;
      uint32_t tAD7606_OS2  :1;

      uint32_t tY50_0 :1;
      uint32_t tY50_1  :1;
      uint32_t tY50_2  :1;
      uint32_t tY50_3  :1;
      uint32_t tY50_4  :1;
      uint32_t tY50_5  :1;
      uint32_t tY50_6  :1;
      uint32_t tY50_7 :1;

      uint32_t tAD7606_RESET  :1;
      uint32_t tAD7606_RANGE  :1;
      uint32_t tY33_2 :1;
      uint32_t tY33_3  :1;
      uint32_t tY33_4  :1;
      uint32_t tY33_5  :1;
      uint32_t tY33_6  :1;
      uint32_t tY33_7 :1;

}FMCIO_ODR;

FMCIO_ODR *FMC_EXTIO = (FMCIO_ODR *)0x60001000;

使用特权