/**
* @brief I2C MSP Initialization
* @param None
* @retval None
*/
static void I2Cx_MspInit(void)
{
GPIO_InitTypeDef GPIO_InitStruct;
/* Enable I2C GPIO clocks */
DISCOVERY_I2Cx_SCL_SDA_GPIO_CLK_ENABLE();
/* DISCOVERY_I2Cx SCL and SDA pins configuration ---------------------------*/
GPIO_InitStruct.Pin = DISCOVERY_I2Cx_SCL_PIN | DISCOVERY_I2Cx_SDA_PIN;
GPIO_InitStruct.Mode = GPIO_MODE_AF_OD;
GPIO_InitStruct.Speed = GPIO_SPEED_FAST;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Alternate = DISCOVERY_I2Cx_SCL_SDA_AF;
HAL_GPIO_Init(DISCOVERY_I2Cx_SCL_SDA_GPIO_PORT, &GPIO_InitStruct);
/* Enable the DISCOVERY_I2Cx peripheral clock */
DISCOVERY_I2Cx_CLK_ENABLE();
/* Force the I2C peripheral clock reset */
DISCOVERY_I2Cx_FORCE_RESET();
/* Release the I2C peripheral clock reset */
DISCOVERY_I2Cx_RELEASE_RESET();
/* Enable and set I2Cx Interrupt to the highest priority */
HAL_NVIC_SetPriority(DISCOVERY_I2Cx_EV_IRQn, 0, 0);
HAL_NVIC_EnableIRQ(DISCOVERY_I2Cx_EV_IRQn);
/* Enable and set I2Cx Interrupt to the highest priority */
HAL_NVIC_SetPriority(DISCOVERY_I2Cx_ER_IRQn, 0, 0);
HAL_NVIC_EnableIRQ(DISCOVERY_I2Cx_ER_IRQn);
}
/**
* @brief I2Cx MSP Init.
* @param hi2c: I2C handle
* @retval None
*/
static void I2Cx_MspInit(I2C_HandleTypeDef *hi2c)
{
GPIO_InitTypeDef GPIO_InitStructure;
/* Enable the I2C peripheral */
DISCOVERY_I2Cx_CLOCK_ENABLE();
/* Enable SCK and SDA GPIO clocks */
DISCOVERY_I2Cx_GPIO_CLK_ENABLE();
/* I2Cx SD1 & SCK pin configuration */
GPIO_InitStructure.Pin = DISCOVERY_I2Cx_SDA_PIN | DISCOVERY_I2Cx_SCL_PIN;
GPIO_InitStructure.Mode = GPIO_MODE_AF_OD;
GPIO_InitStructure.Pull = GPIO_NOPULL;
GPIO_InitStructure.Speed = GPIO_SPEED_FAST;
GPIO_InitStructure.Alternate = DISCOVERY_I2Cx_AF;
HAL_GPIO_Init(DISCOVERY_I2Cx_GPIO_PORT, &GPIO_InitStructure);
/* Force the I2C peripheral clock reset */
DISCOVERY_I2Cx_FORCE_RESET();
/* Release the I2C peripheral clock reset */
DISCOVERY_I2Cx_RELEASE_RESET();
/* Enable and set I2Cx Interrupt to the highest priority */
HAL_NVIC_SetPriority(DISCOVERY_I2Cx_EV_IRQn, 0, 0);
HAL_NVIC_EnableIRQ(DISCOVERY_I2Cx_EV_IRQn);
/* Enable and set I2Cx Interrupt to the highest priority */
HAL_NVIC_SetPriority(DISCOVERY_I2Cx_ER_IRQn, 0, 0);
HAL_NVIC_EnableIRQ(DISCOVERY_I2Cx_ER_IRQn);
}
/**
* @brief I2Cx MSP Initialization
* @param hi2c: I2C handle
*/
static void I2Cx_MspInit(I2C_HandleTypeDef *hi2c)
{
GPIO_InitTypeDef GPIO_InitStruct;
#ifdef EE_M24LR64
static DMA_HandleTypeDef hdma_tx;
static DMA_HandleTypeDef hdma_rx;
I2C_HandleTypeDef* pI2cHandle;
pI2cHandle = &I2cHandle;
#endif /* EE_M24LR64 */
if (hi2c->Instance == DISCOVERY_I2Cx)
{
/* Configure the GPIOs ---------------------------------------------------*/
/* Enable GPIO clock */
DISCOVERY_I2Cx_SDA_GPIO_CLK_ENABLE();
DISCOVERY_I2Cx_SCL_GPIO_CLK_ENABLE();
/* Configure I2C Tx as alternate function */
GPIO_InitStruct.Pin = DISCOVERY_I2Cx_SCL_PIN;
GPIO_InitStruct.Mode = GPIO_MODE_AF_OD;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FAST;
GPIO_InitStruct.Alternate = DISCOVERY_I2Cx_SCL_SDA_AF;
HAL_GPIO_Init(DISCOVERY_I2Cx_SCL_GPIO_PORT, &GPIO_InitStruct);
/* Configure I2C Rx as alternate function */
GPIO_InitStruct.Pin = DISCOVERY_I2Cx_SDA_PIN;
HAL_GPIO_Init(DISCOVERY_I2Cx_SDA_GPIO_PORT, &GPIO_InitStruct);
/* Configure the Discovery I2Cx peripheral -------------------------------*/
/* Enable I2C3 clock */
DISCOVERY_I2Cx_CLOCK_ENABLE();
/* Force the I2C Peripheral Clock Reset */
DISCOVERY_I2Cx_FORCE_RESET();
/* Release the I2C Peripheral Clock Reset */
DISCOVERY_I2Cx_RELEASE_RESET();
/* Enable and set Discovery I2Cx Interrupt to the highest priority */
HAL_NVIC_SetPriority(DISCOVERY_I2Cx_EV_IRQn, 0x00, 0);
HAL_NVIC_EnableIRQ(DISCOVERY_I2Cx_EV_IRQn);
/* Enable and set Discovery I2Cx Interrupt to the highest priority */
HAL_NVIC_SetPriority(DISCOVERY_I2Cx_ER_IRQn, 0x00, 0);
HAL_NVIC_EnableIRQ(DISCOVERY_I2Cx_ER_IRQn);
#ifdef EE_M24LR64
/* I2C DMA TX and RX channels configuration */
/* Enable the DMA clock */
EEPROM_I2C_DMA_CLK_ENABLE();
/* Configure the DMA stream for the EE I2C peripheral TX direction */
/* Configure the DMA Stream */
hdma_tx.Instance = EEPROM_I2C_DMA_STREAM_TX;
/* Set the parameters to be configured */
hdma_tx.Init.Channel = EEPROM_I2C_DMA_CHANNEL;
hdma_tx.Init.Direction = DMA_MEMORY_TO_PERIPH;
hdma_tx.Init.PeriphInc = DMA_PINC_DISABLE;
hdma_tx.Init.MemInc = DMA_MINC_ENABLE;
hdma_tx.Init.PeriphDataAlignment = DMA_PDATAALIGN_BYTE;
hdma_tx.Init.MemDataAlignment = DMA_MDATAALIGN_BYTE;
hdma_tx.Init.Mode = DMA_NORMAL;
hdma_tx.Init.Priority = DMA_PRIORITY_VERY_HIGH;
hdma_tx.Init.FIFOMode = DMA_FIFOMODE_ENABLE;
hdma_tx.Init.FIFOThreshold = DMA_FIFO_THRESHOLD_FULL;
hdma_tx.Init.MemBurst = DMA_MBURST_SINGLE;
hdma_tx.Init.PeriphBurst = DMA_PBURST_SINGLE;
/* Associate the initilalized hdma_tx handle to the the pI2cHandle handle */
__HAL_LINKDMA(pI2cHandle, hdmatx, hdma_tx);
/* Configure the DMA Stream */
HAL_DMA_Init(&hdma_tx);
/* Configure and enable I2C DMA TX Channel interrupt */
HAL_NVIC_SetPriority((IRQn_Type)(EEPROM_I2C_DMA_TX_IRQn), EEPROM_I2C_DMA_PREPRIO, 0);
HAL_NVIC_EnableIRQ((IRQn_Type)(EEPROM_I2C_DMA_TX_IRQn));
/* Configure the DMA stream for the EE I2C peripheral TX direction */
/* Configure the DMA Stream */
hdma_rx.Instance = EEPROM_I2C_DMA_STREAM_RX;
/* Set the parameters to be configured */
hdma_rx.Init.Channel = EEPROM_I2C_DMA_CHANNEL;
hdma_rx.Init.Direction = DMA_PERIPH_TO_MEMORY;
hdma_rx.Init.PeriphInc = DMA_PINC_DISABLE;
hdma_rx.Init.MemInc = DMA_MINC_ENABLE;
hdma_rx.Init.PeriphDataAlignment = DMA_PDATAALIGN_BYTE;
hdma_rx.Init.MemDataAlignment = DMA_MDATAALIGN_BYTE;
hdma_rx.Init.Mode = DMA_NORMAL;
hdma_rx.Init.Priority = DMA_PRIORITY_VERY_HIGH;
hdma_rx.Init.FIFOMode = DMA_FIFOMODE_ENABLE;
hdma_rx.Init.FIFOThreshold = DMA_FIFO_THRESHOLD_FULL;
hdma_rx.Init.MemBurst = DMA_MBURST_SINGLE;
hdma_rx.Init.PeriphBurst = DMA_PBURST_SINGLE;
/* Associate the initilalized hdma_rx handle to the the pI2cHandle handle*/
__HAL_LINKDMA(pI2cHandle, hdmarx, hdma_rx);
/* Configure the DMA Stream */
HAL_DMA_Init(&hdma_rx);
/* Configure and enable I2C DMA RX Channel interrupt */
HAL_NVIC_SetPriority((IRQn_Type)(EEPROM_I2C_DMA_RX_IRQn), EEPROM_I2C_DMA_PREPRIO, 0);
HAL_NVIC_EnableIRQ((IRQn_Type)(EEPROM_I2C_DMA_RX_IRQn));
#endif /* EE_M24LR64 */
}
}
