/**
* @brief Configure the IO pins used by the I2C device.
* @param Device : I2C Device instance.
* @retval None.
*/
void CPAL_I2C_HAL_GPIOInit(CPAL_DevTypeDef Device)
{
GPIO_InitTypeDef GPIO_InitStructure;
/* Enable I2Cx SCL and SDA Pin Clock */
__I2C_GPIO_CLK_CMD((CPAL_I2C_SCL_GPIO_CLK[Device] | CPAL_I2C_SDA_GPIO_CLK[Device]), ENABLE);
/* Enable Pin Remap if PB8 (SCL) and PB9 (SDA) is used for I2C1 */
if ((Device == CPAL_I2C1) && (CPAL_I2C1_SCL_GPIO_PIN == GPIO_Pin_8) && (CPAL_I2C1_SDA_GPIO_PIN == GPIO_Pin_9))
{
/* Enable GPIO Alternative Functions */
__AFIO_CLK_CMD(ENABLE);
/* Enable I2C1 pin Remap */
GPIO_PinRemapConfig(GPIO_Remap_I2C1, ENABLE);
}
/* Set GPIO frequency to 50MHz */
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
/* Select Output open-drain mode */
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_OD;
/* Initialize I2Cx SCL Pin */
GPIO_InitStructure.GPIO_Pin = CPAL_I2C_SCL_GPIO_PIN[Device];
GPIO_Init((GPIO_TypeDef*)CPAL_I2C_SCL_GPIO_PORT[Device], &GPIO_InitStructure);
/* Initialize I2Cx SDA Pin */
GPIO_InitStructure.GPIO_Pin = CPAL_I2C_SDA_GPIO_PIN[Device];
GPIO_Init((GPIO_TypeDef*)CPAL_I2C_SDA_GPIO_PORT[Device], &GPIO_InitStructure);
i2cdevUnlockBus((GPIO_TypeDef*)CPAL_I2C_SCL_GPIO_PORT[Device],
(GPIO_TypeDef*)CPAL_I2C_SDA_GPIO_PORT[Device],
CPAL_I2C_SCL_GPIO_PIN[Device],
CPAL_I2C_SDA_GPIO_PIN[Device]);
/* Select Output open-drain mode */
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_OD;
/* Initialize I2Cx SCL Pin */
GPIO_InitStructure.GPIO_Pin = CPAL_I2C_SCL_GPIO_PIN[Device];
GPIO_Init((GPIO_TypeDef*)CPAL_I2C_SCL_GPIO_PORT[Device], &GPIO_InitStructure);
/* Initialize I2Cx SDA Pin */
GPIO_InitStructure.GPIO_Pin = CPAL_I2C_SDA_GPIO_PIN[Device];
GPIO_Init((GPIO_TypeDef*)CPAL_I2C_SDA_GPIO_PORT[Device], &GPIO_InitStructure);
}
/**
* @brief Configure the IO pins used by the I2C device.
* @param Device : I2C Device instance.
* @retval None.
*/
void CPAL_I2C_HAL_GPIOInit(CPAL_DevTypeDef Device)
{
GPIO_InitTypeDef GPIO_InitStructure;
/* Enable I2Cx SCL and SDA Pin Clock */
__I2C_GPIO_CLK_CMD((CPAL_I2C_SCL_GPIO_CLK[Device] | CPAL_I2C_SDA_GPIO_CLK[Device]), ENABLE);
/* Connect PXx to I2C_SCL */
GPIO_PinAFConfig((GPIO_TypeDef*)CPAL_I2C_SCL_GPIO_PORT[Device],CPAL_I2C_SCL_GPIO_PINSOURCE[Device],CPAL_I2C_AF[Device]);
/* Connect PXx to I2C_SDA */
GPIO_PinAFConfig((GPIO_TypeDef*)CPAL_I2C_SDA_GPIO_PORT[Device],CPAL_I2C_SDA_GPIO_PINSOURCE[Device],CPAL_I2C_AF[Device]);
/* Set GPIO frequency to 50MHz */
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
/* Select Alternate function mode */
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
/* Select output Open Drain type */
GPIO_InitStructure.GPIO_OType = GPIO_OType_OD;
/* Disable internal Pull-up */
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
/* Initialize I2Cx SCL Pin */
GPIO_InitStructure.GPIO_Pin = CPAL_I2C_SCL_GPIO_PIN[Device];
GPIO_Init((GPIO_TypeDef*)CPAL_I2C_SCL_GPIO_PORT[Device], &GPIO_InitStructure);
/* Initialize I2Cx SDA Pin */
GPIO_InitStructure.GPIO_Pin = CPAL_I2C_SDA_GPIO_PIN[Device];
GPIO_Init((GPIO_TypeDef*)CPAL_I2C_SDA_GPIO_PORT[Device], &GPIO_InitStructure);
i2cdevUnlockBus((GPIO_TypeDef*)CPAL_I2C_SCL_GPIO_PORT[Device],
(GPIO_TypeDef*)CPAL_I2C_SDA_GPIO_PORT[Device],
CPAL_I2C_SCL_GPIO_PIN[Device],
CPAL_I2C_SDA_GPIO_PIN[Device]);
}
