/* USER CODE BEGIN Header */
/**
******************************************************************************
* @file : stm32wlxx_nucleo_bus.c
* @brief : source file for the BSP BUS IO driver
******************************************************************************
* @attention
*
* Copyright (c) 2024 STMicroelectronics.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "stm32wlxx_nucleo_bus.h"
__weak HAL_StatusTypeDef MX_I2C2_Init(I2C_HandleTypeDef* hi2c);
/** @addtogroup BSP
* @{
*/
/** @addtogroup STM32WLXX_NUCLEO
* @{
*/
/** @defgroup STM32WLXX_NUCLEO_BUS STM32WLXX_NUCLEO BUS
* @{
*/
/** @defgroup STM32WLXX_NUCLEO_BUS_Exported_Variables BUS Exported Variables
* @{
*/
I2C_HandleTypeDef hi2c2;
/**
* @}
*/
/** @defgroup STM32WLXX_NUCLEO_BUS_Private_Variables BUS Private Variables
* @{
*/
#if (USE_HAL_I2C_REGISTER_CALLBACKS == 1U)
static uint32_t IsI2C2MspCbValid = 0;
#endif /* USE_HAL_I2C_REGISTER_CALLBACKS */
static uint32_t I2C2InitCounter = 0;
/**
* @}
*/
/** @defgroup STM32WLXX_NUCLEO_BUS_Private_FunctionPrototypes BUS Private Function
* @{
*/
static void I2C2_MspInit(I2C_HandleTypeDef* hI2c);
static void I2C2_MspDeInit(I2C_HandleTypeDef* hI2c);
#if (USE_CUBEMX_BSP_V2 == 1)
static uint32_t I2C_GetTiming(uint32_t clock_src_hz, uint32_t i2cfreq_hz);
static void Compute_PRESC_SCLDEL_SDADEL(uint32_t clock_src_freq, uint32_t I2C_Speed);
static uint32_t Compute_SCLL_SCLH (uint32_t clock_src_freq, uint32_t I2C_speed);
#endif
/**
* @}
*/
/** @defgroup STM32WLXX_NUCLEO_LOW_LEVEL_Private_Functions STM32WLXX_NUCLEO LOW LEVEL Private Functions
* @{
*/
/** @defgroup STM32WLXX_NUCLEO_BUS_Exported_Functions STM32WLXX_NUCLEO_BUS Exported Functions
* @{
*/
/* BUS IO driver over I2C Peripheral */
/*******************************************************************************
BUS OPERATIONS OVER I2C
*******************************************************************************/
/**
* @brief Initialize I2C HAL
* @retval BSP status
*/
int32_t BSP_I2C2_Init(void)
{
int32_t ret = BSP_ERROR_NONE;
hi2c2.Instance = I2C2;
if(I2C2InitCounter++ == 0)
{
if (HAL_I2C_GetState(&hi2c2) == HAL_I2C_STATE_RESET)
{
#if (USE_HAL_I2C_REGISTER_CALLBACKS == 0U)
/* Init the I2C Msp */
I2C2_MspInit(&hi2c2);
#else
if(IsI2C2MspCbValid == 0U)
{
if(BSP_I2C2_RegisterDefaultMspCallbacks() != BSP_ERROR_NONE)
{
return BSP_ERROR_MSP_FAILURE;
}
}
#endif
if(ret == BSP_ERROR_NONE)
{
/* Init the I2C */
if(MX_I2C2_Init(&hi2c2) != HAL_OK)
{
ret = BSP_ERROR_BUS_FAILURE;
}
else if(HAL_I2CEx_ConfigAnalogFilter(&hi2c2, I2C_ANALOGFILTER_ENABLE) != HAL_OK)
{
ret = BSP_ERROR_BUS_FAILURE;
}
else
{
ret = BSP_ERROR_NONE;
}
}
}
}
return ret;
}
/**
* @brief DeInitialize I2C HAL.
* @retval BSP status
*/
int32_t BSP_I2C2_DeInit(void)
{
int32_t ret = BSP_ERROR_NONE;
if (I2C2InitCounter > 0)
{
if (--I2C2InitCounter == 0)
{
#if (USE_HAL_I2C_REGISTER_CALLBACKS == 0U)
/* DeInit the I2C */
I2C2_MspDeInit(&hi2c2);
#endif
/* DeInit the I2C */
if (HAL_I2C_DeInit(&hi2c2) != HAL_OK)
{
ret = BSP_ERROR_BUS_FAILURE;
}
}
}
return ret;
}
/**
* @brief Check whether the I2C bus is ready.
* @param DevAddr : I2C device address
* @param Trials : Check trials number
* @retval BSP status
*/
int32_t BSP_I2C2_IsReady(uint16_t DevAddr, uint32_t Trials)
{
int32_t ret = BSP_ERROR_NONE;
if (HAL_I2C_IsDeviceReady(&hi2c2, DevAddr, Trials, BUS_I2C2_POLL_TIMEOUT) != HAL_OK)
{
ret = BSP_ERROR_BUSY;
}
return ret;
}
/**
* @brief Write a value in a register of the device through BUS.
* @param DevAddr Device address on Bus.
* @param Reg The target register address to write
* @param pData Pointer to data buffer to write
* @param Length Data Length
* @retval BSP status
*/
int32_t BSP_I2C2_WriteReg(uint16_t DevAddr, uint16_t Reg, uint8_t *pData, uint16_t Length)
{
int32_t ret = BSP_ERROR_NONE;
if (HAL_I2C_Mem_Write(&hi2c2, DevAddr,Reg, I2C_MEMADD_SIZE_8BIT,pData, Length, BUS_I2C2_POLL_TIMEOUT) != HAL_OK)
{
if (HAL_I2C_GetError(&hi2c2) == HAL_I2C_ERROR_AF)
{
ret = BSP_ERROR_BUS_ACKNOWLEDGE_FAILURE;
}
else
{
ret = BSP_ERROR_PERIPH_FAILURE;
}
}
return ret;
}
/**
* @brief Read a register of the device through BUS
* @param DevAddr Device address on Bus.
* @param Reg The target register address to read
* @param pData Pointer to data buffer to read
* @param Length Data Length
* @retval BSP status
*/
int32_t BSP_I2C2_ReadReg(uint16_t DevAddr, uint16_t Reg, uint8_t *pData, uint16_t Length)
{
int32_t ret = BSP_ERROR_NONE;
if (HAL_I2C_Mem_Read(&hi2c2, DevAddr, Reg, I2C_MEMADD_SIZE_8BIT, pData, Length, BUS_I2C2_POLL_TIMEOUT) != HAL_OK)
{
if (HAL_I2C_GetError(&hi2c2) == HAL_I2C_ERROR_AF)
{
ret = BSP_ERROR_BUS_ACKNOWLEDGE_FAILURE;
}
else
{
ret = BSP_ERROR_PERIPH_FAILURE;
}
}
return ret;
}
/**
* @brief Write a value in a register of the device through BUS.
* @param DevAddr Device address on Bus.
* @param Reg The target register address to write
* @param pData Pointer to data buffer to write
* @param Length Data Length
* @retval BSP statu
*/
int32_t BSP_I2C2_WriteReg16(uint16_t DevAddr, uint16_t Reg, uint8_t *pData, uint16_t Length)
{
int32_t ret = BSP_ERROR_NONE;
if (HAL_I2C_Mem_Write(&hi2c2, DevAddr, Reg, I2C_MEMADD_SIZE_16BIT, pData, Length, BUS_I2C2_POLL_TIMEOUT) != HAL_OK)
{
if (HAL_I2C_GetError(&hi2c2) == HAL_I2C_ERROR_AF)
{
ret = BSP_ERROR_BUS_ACKNOWLEDGE_FAILURE;
}
else
{
ret = BSP_ERROR_PERIPH_FAILURE;
}
}
return ret;
}
/**
* @brief Read registers through a bus (16 bits)
* @param DevAddr: Device address on BUS
* @param Reg: The target register address to read
* @param Length Data Length
* @retval BSP status
*/
int32_t BSP_I2C2_ReadReg16(uint16_t DevAddr, uint16_t Reg, uint8_t *pData, uint16_t Length)
{
int32_t ret = BSP_ERROR_NONE;
if (HAL_I2C_Mem_Read(&hi2c2, DevAddr, Reg, I2C_MEMADD_SIZE_16BIT, pData, Length, BUS_I2C2_POLL_TIMEOUT) != HAL_OK)
{
if (HAL_I2C_GetError(&hi2c2) != HAL_I2C_ERROR_AF)
{
ret = BSP_ERROR_BUS_ACKNOWLEDGE_FAILURE;
}
else
{
ret = BSP_ERROR_PERIPH_FAILURE;
}
}
return ret;
}
/**
* @brief Send an amount width data through bus (Simplex)
* @param DevAddr: Device address on Bus.
* @param pData: Data pointer
* @param Length: Data length
* @retval BSP status
*/
int32_t BSP_I2C2_Send(uint16_t DevAddr, uint8_t *pData, uint16_t Length) {
int32_t ret = BSP_ERROR_NONE;
if (HAL_I2C_Master_Transmit(&hi2c2, DevAddr, pData, Length, BUS_I2C2_POLL_TIMEOUT) != HAL_OK)
{
if (HAL_I2C_GetError(&hi2c2) != HAL_I2C_ERROR_AF)
{
ret = BSP_ERROR_BUS_ACKNOWLEDGE_FAILURE;
}
else
{
ret = BSP_ERROR_PERIPH_FAILURE;
}
}
return ret;
}
/**
* @brief Receive an amount of data through a bus (Simplex)
* @param DevAddr: Device address on Bus.
* @param pData: Data pointer
* @param Length: Data length
* @retval BSP status
*/
int32_t BSP_I2C2_Recv(uint16_t DevAddr, uint8_t *pData, uint16_t Length) {
int32_t ret = BSP_ERROR_NONE;
if (HAL_I2C_Master_Receive(&hi2c2, DevAddr, pData, Length, BUS_I2C2_POLL_TIMEOUT) != HAL_OK)
{
if (HAL_I2C_GetError(&hi2c2) != HAL_I2C_ERROR_AF)
{
ret = BSP_ERROR_BUS_ACKNOWLEDGE_FAILURE;
}
else
{
ret = BSP_ERROR_PERIPH_FAILURE;
}
}
return ret;
}
#if (USE_HAL_I2C_REGISTER_CALLBACKS == 1U)
/**
* @brief Register Default BSP I2C2 Bus Msp Callbacks
* @retval BSP status
*/
int32_t BSP_I2C2_RegisterDefaultMspCallbacks (void)
{
__HAL_I2C_RESET_HANDLE_STATE(&hi2c2);
/* Register MspInit Callback */
if (HAL_I2C_RegisterCallback(&hi2c2, HAL_I2C_MSPINIT_CB_ID, I2C2_MspInit) != HAL_OK)
{
return BSP_ERROR_PERIPH_FAILURE;
}
/* Register MspDeInit Callback */
if (HAL_I2C_RegisterCallback(&hi2c2, HAL_I2C_MSPDEINIT_CB_ID, I2C2_MspDeInit) != HAL_OK)
{
return BSP_ERROR_PERIPH_FAILURE;
}
IsI2C2MspCbValid = 1;
return BSP_ERROR_NONE;
}
/**
* @brief BSP I2C2 Bus Msp Callback registering
* @param Callbacks pointer to I2C2 MspInit/MspDeInit callback functions
* @retval BSP status
*/
int32_t BSP_I2C2_RegisterMspCallbacks (BSP_I2C_Cb_t *Callbacks)
{
/* Prevent unused argument(s) compilation warning */
__HAL_I2C_RESET_HANDLE_STATE(&hi2c2);
/* Register MspInit Callback */
if (HAL_I2C_RegisterCallback(&hi2c2, HAL_I2C_MSPINIT_CB_ID, Callbacks->pMspInitCb) != HAL_OK)
{
return BSP_ERROR_PERIPH_FAILURE;
}
/* Register MspDeInit Callback */
if (HAL_I2C_RegisterCallback(&hi2c2, HAL_I2C_MSPDEINIT_CB_ID, Callbacks->pMspDeInitCb) != HAL_OK)
{
return BSP_ERROR_PERIPH_FAILURE;
}
IsI2C2MspCbValid = 1;
return BSP_ERROR_NONE;
}
#endif /* USE_HAL_I2C_REGISTER_CALLBACKS */
/**
* @brief Return system tick in ms
* @retval Current HAL time base time stamp
*/
int32_t BSP_GetTick(void) {
return HAL_GetTick();
}
/* I2C2 init function */
__weak HAL_StatusTypeDef MX_I2C2_Init(I2C_HandleTypeDef* hi2c)
{
HAL_StatusTypeDef ret = HAL_OK;
hi2c->Instance = I2C2;
hi2c->Init.Timing = 0x0090194B;
hi2c->Init.OwnAddress1 = 0;
hi2c->Init.AddressingMode = I2C_ADDRESSINGMODE_7BIT;
hi2c->Init.DualAddressMode = I2C_DUALADDRESS_DISABLE;
hi2c->Init.OwnAddress2 = 0;
hi2c->Init.OwnAddress2Masks = I2C_OA2_NOMASK;
hi2c->Init.GeneralCallMode = I2C_GENERALCALL_DISABLE;
hi2c->Init.NoStretchMode = I2C_NOSTRETCH_DISABLE;
if (HAL_I2C_Init(hi2c) != HAL_OK)
{
ret = HAL_ERROR;
}
if (HAL_I2CEx_ConfigAnalogFilter(hi2c, I2C_ANALOGFILTER_ENABLE) != HAL_OK)
{
ret = HAL_ERROR;
}
if (HAL_I2CEx_ConfigDigitalFilter(hi2c, 0) != HAL_OK)
{
ret = HAL_ERROR;
}
return ret;
}
static void I2C2_MspInit(I2C_HandleTypeDef* i2cHandle)
{
GPIO_InitTypeDef GPIO_InitStruct;
RCC_PeriphCLKInitTypeDef PeriphClkInitStruct = {0};
/* USER CODE BEGIN I2C2_MspInit 0 */
/* USER CODE END I2C2_MspInit 0 */
/** Initializes the peripherals clocks
*/
PeriphClkInitStruct.PeriphClockSelection = RCC_PERIPHCLK_I2C2;
PeriphClkInitStruct.I2c2ClockSelection = RCC_I2C2CLKSOURCE_PCLK1;
HAL_RCCEx_PeriphCLKConfig(&PeriphClkInitStruct);
__HAL_RCC_GPIOA_CLK_ENABLE();
/**I2C2 GPIO Configuration
PA12 ------> I2C2_SCL
PA11 ------> I2C2_SDA
*/
GPIO_InitStruct.Pin = BUS_I2C2_SCL_GPIO_PIN;
GPIO_InitStruct.Mode = GPIO_MODE_AF_OD;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
GPIO_InitStruct.Alternate = BUS_I2C2_SCL_GPIO_AF;
HAL_GPIO_Init(BUS_I2C2_SCL_GPIO_PORT, &GPIO_InitStruct);
GPIO_InitStruct.Pin = BUS_I2C2_SDA_GPIO_PIN;
GPIO_InitStruct.Mode = GPIO_MODE_AF_OD;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
GPIO_InitStruct.Alternate = BUS_I2C2_SDA_GPIO_AF;
HAL_GPIO_Init(BUS_I2C2_SDA_GPIO_PORT, &GPIO_InitStruct);
/* Peripheral clock enable */
__HAL_RCC_I2C2_CLK_ENABLE();
/* USER CODE BEGIN I2C2_MspInit 1 */
/* USER CODE END I2C2_MspInit 1 */
}
static void I2C2_MspDeInit(I2C_HandleTypeDef* i2cHandle)
{
/* USER CODE BEGIN I2C2_MspDeInit 0 */
/* USER CODE END I2C2_MspDeInit 0 */
/* Peripheral clock disable */
__HAL_RCC_I2C2_CLK_DISABLE();
/**I2C2 GPIO Configuration
PA12 ------> I2C2_SCL
PA11 ------> I2C2_SDA
*/
HAL_GPIO_DeInit(BUS_I2C2_SCL_GPIO_PORT, BUS_I2C2_SCL_GPIO_PIN);
HAL_GPIO_DeInit(BUS_I2C2_SDA_GPIO_PORT, BUS_I2C2_SDA_GPIO_PIN);
/* USER CODE BEGIN I2C2_MspDeInit 1 */
/* USER CODE END I2C2_MspDeInit 1 */
}
/**
* @}
*/
/**
* @}
*/
/**
* @}
*/
/**
* @}
*/