I2C 设置地址模式和模拟模式

/**

• \brief Sets the addressing mode to either 7-bit or 10-bit.

• \param base is the base address of the I2C instance used.

• \param mode is the address mode, 7-bit or 10-bit.

• This function configures the I2C module for either a 7-bit address

• (default) or a 10-bit address. The \e mode parameter configures the address

• length to 10 bits when its value is \b I2C_ADDR_MODE_10BITS and 7 bits when

• \b I2C_ADDR_MODE_7BITS.

• \return None. */ static inline void I2C_setAddressMode(uint32_t base, I2C_AddressMode mode) { // 检查参数是否合法 ASSERT(I2C_isBaseValid(base));

  // 写入地址模式到地址扩展位 HWREGH(base + I2C_O_MDR) = (HWREGH(base + I2C_O_MDR) & ~I2C_MDR_XA) | (uint16_t)mode; }

/**

• \brief Sets I2C emulation mode.

• \param base is the base address of the I2C instance used.

• \param mode is the emulation mode.

• This function sets the behavior of the I2C operation when an emulation

• suspend occurs. The \e mode parameter can be one of the following:

• • \b I2C_EMULATION_STOP_SCL_LOW - If SCL is low when the breakpoint occurs,

• the I2C module stops immediately. If SCL is high, the I2C module waits

• until SCL becomes low and then stops.

• • \b I2C_EMULATION_FREE_RUN - I2C operation continues regardless of a

• the suspend.

• \return None. */ static inline void I2C_setEmulationMode(uint32_t base, I2C_EmulationMode mode) { // 检查参数是否合法 ASSERT(I2C_isBaseValid(base));

  // 写入模拟模式到寄存器 HWREGH(base + I2C_O_MDR) = (HWREGH(base + I2C_O_MDR) & ~I2C_MDR_FREE) | (uint16_t)mode; }