/**
* @brief Eval I2Cx MSP Initialization
* @param hi2c: I2C handle
* @retval None
*/
static void I2Cx_MspInit(I2C_HandleTypeDef *hi2c)
{
GPIO_InitTypeDef GPIO_InitStructure;
RCC_PeriphCLKInitTypeDef RCC_PeriphCLKInitStruct;
if (hi2c->Instance == EVAL_I2Cx)
{
/*##-1- Configure the Eval I2C clock source. The clock is derived from the SYSCLK #*/
RCC_PeriphCLKInitStruct.PeriphClockSelection = RCC_PERIPHCLK_I2C2;
RCC_PeriphCLKInitStruct.I2c2ClockSelection = RCC_I2C2CLKSOURCE_SYSCLK;
HAL_RCCEx_PeriphCLKConfig(&RCC_PeriphCLKInitStruct);
/*##-2- Configure the GPIOs ################################################*/
/* Enable GPIO clock */
EVAL_I2Cx_SDA_GPIO_CLK_ENABLE();
EVAL_I2Cx_SCL_GPIO_CLK_ENABLE();
/* Configure I2C Tx as alternate function */
GPIO_InitStructure.Pin = EVAL_I2Cx_SCL_PIN;
GPIO_InitStructure.Mode = GPIO_MODE_AF_OD;
GPIO_InitStructure.Pull = GPIO_NOPULL;
GPIO_InitStructure.Speed = GPIO_SPEED_HIGH;
GPIO_InitStructure.Alternate = EVAL_I2Cx_SCL_SDA_AF;
HAL_GPIO_Init(EVAL_I2Cx_SCL_GPIO_PORT, &GPIO_InitStructure);
/* Configure I2C Rx as alternate function */
GPIO_InitStructure.Pin = EVAL_I2Cx_SDA_PIN;
HAL_GPIO_Init(EVAL_I2Cx_SDA_GPIO_PORT, &GPIO_InitStructure);
/*##-3- Configure the Eval I2Cx peripheral #######################################*/
/* Enable Eval_I2Cx clock */
EVAL_I2Cx_CLK_ENABLE();
/* Force the I2C Periheral Clock Reset */
EVAL_I2Cx_FORCE_RESET();
/* Release the I2C Periheral Clock Reset */
EVAL_I2Cx_RELEASE_RESET();
/* Enable and set Eval I2Cx Interrupt to the highest priority */
HAL_NVIC_SetPriority(EVAL_I2Cx_EV_IRQn, 0x00, 0);
HAL_NVIC_EnableIRQ(EVAL_I2Cx_EV_IRQn);
/* Enable and set Eval I2Cx Interrupt to the highest priority */
HAL_NVIC_SetPriority(EVAL_I2Cx_ER_IRQn, 0x00, 0);
HAL_NVIC_EnableIRQ(EVAL_I2Cx_ER_IRQn);
}
}
/**
* @brief Initializes I2C MSP.
* @param None
* @retval None
*/
static void I2Cx_MspInit(void)
{
GPIO_InitTypeDef GPIO_InitStruct;
/*** Configure the GPIOs ***/
/* Enable GPIO clock */
EVAL_I2Cx_SCL_SDA_GPIO_CLK_ENABLE();
/* Configure I2C Tx as alternate function */
GPIO_InitStruct.Pin = EVAL_I2Cx_SCL_PIN;
GPIO_InitStruct.Mode = GPIO_MODE_AF_OD;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FAST;
GPIO_InitStruct.Alternate = EVAL_I2Cx_SCL_SDA_AF;
HAL_GPIO_Init(EVAL_I2Cx_SCL_SDA_GPIO_PORT, &GPIO_InitStruct);
/* Configure I2C Rx as alternate function */
GPIO_InitStruct.Pin = EVAL_I2Cx_SDA_PIN;
HAL_GPIO_Init(EVAL_I2Cx_SCL_SDA_GPIO_PORT, &GPIO_InitStruct);
/*** Configure the I2C peripheral ***/
/* Enable I2C clock */
EVAL_I2Cx_CLK_ENABLE();
/* Force the I2C peripheral clock reset */
EVAL_I2Cx_FORCE_RESET();
/* Release the I2C peripheral clock reset */
EVAL_I2Cx_RELEASE_RESET();
/* Set priority and enable I2Cx event Interrupt */
HAL_NVIC_SetPriority(EVAL_I2Cx_EV_IRQn, 5, 0);
HAL_NVIC_EnableIRQ(EVAL_I2Cx_EV_IRQn);
/* Set priority and enable I2Cx error Interrupt */
HAL_NVIC_SetPriority(EVAL_I2Cx_ER_IRQn, 5, 0);
HAL_NVIC_EnableIRQ(EVAL_I2Cx_ER_IRQn);
}
