一个很bug的函数gpio_bit_write

  1. /*!
  2.     \brief      write data to the specified GPIO pin
  3.     \param[in]  gpio_periph: GPIOx(x = A,B,C,D,E,F,G) 
  4.     \param[in]  pin: GPIO pin
  5.                 one or more parameters can be selected which are shown as below:
  6.       \arg        GPIO_PIN_x(x=0..15), GPIO_PIN_ALL
  7.     \param[in]  bit_value: SET or RESET
  8.       \arg        RESET: clear the port pin
  9.       \arg        SET: set the port pin
  10.     \param[out] none
  11.     \retval     none
  12. */
  13. void gpio_bit_write(uint32_t gpio_periph, uint32_t pin, bit_status bit_value)
  14. {
  15.     if(RESET != bit_value){
  16.         GPIO_BOP(gpio_periph) = (uint32_t)pin;
  17.     }else{
  18.         GPIO_BC(gpio_periph) = (uint32_t)pin;
  19.     }
  20. }

bit_value 只能是SET or RESET 想弄成 0 1

解决办法：
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搞了一天，I2C驱动OLED，没想到问题出在时钟上，不仅要打开GPIO的时钟，I2C也要同时打开。
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