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btstack/port/stm32-f4discovery-cc256x/bsp/stm32f4_discovery.c
Matthias Ringwald 225f4ba4fe stm32-f4discovery-cc256x: use new Makefile-based port
2019-03-11 16:59:56 +01:00

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/**
******************************************************************************
* @file stm32f4_discovery.c
* @author MCD Application Team
* @version V2.1.2
* @date 27-January-2017
* @brief This file provides set of firmware functions to manage Leds and
* push-button available on STM32F4-Discovery Kit from STMicroelectronics.
******************************************************************************
* @attention
*
* <h2><center>&copy; COPYRIGHT(c) 2017 STMicroelectronics</center></h2>
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. Neither the name of STMicroelectronics nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
******************************************************************************
*/
/* Includes ------------------------------------------------------------------*/
#include "stm32f4_discovery.h"
/** @defgroup BSP BSP
* @{
*/
/** @defgroup STM32F4_DISCOVERY STM32F4 DISCOVERY
* @{
*/
/** @defgroup STM32F4_DISCOVERY_LOW_LEVEL STM32F4 DISCOVERY LOW LEVEL
* @brief This file provides set of firmware functions to manage Leds and push-button
* available on STM32F4-Discovery Kit from STMicroelectronics.
* @{
*/
/** @defgroup STM32F4_DISCOVERY_LOW_LEVEL_Private_TypesDefinitions STM32F4 DISCOVERY LOW LEVEL Private TypesDefinitions
* @{
*/
/**
* @}
*/
/** @defgroup STM32F4_DISCOVERY_LOW_LEVEL_Private_Defines STM32F4 DISCOVERY LOW LEVEL Private Defines
* @{
*/
/**
* @brief STM32F4 DISCO BSP Driver version number V2.1.2
*/
#define __STM32F4_DISCO_BSP_VERSION_MAIN (0x02) /*!< [31:24] main version */
#define __STM32F4_DISCO_BSP_VERSION_SUB1 (0x01) /*!< [23:16] sub1 version */
#define __STM32F4_DISCO_BSP_VERSION_SUB2 (0x02) /*!< [15:8] sub2 version */
#define __STM32F4_DISCO_BSP_VERSION_RC (0x00) /*!< [7:0] release candidate */
#define __STM32F4_DISCO_BSP_VERSION ((__STM32F4_DISCO_BSP_VERSION_MAIN << 24)\
|(__STM32F4_DISCO_BSP_VERSION_SUB1 << 16)\
|(__STM32F4_DISCO_BSP_VERSION_SUB2 << 8 )\
|(__STM32F4_DISCO_BSP_VERSION_RC))
/**
* @}
*/
/** @defgroup STM32F4_DISCOVERY_LOW_LEVEL_Private_Macros STM32F4 DISCOVERY LOW LEVEL Private Macros
* @{
*/
/**
* @}
*/
/** @defgroup STM32F4_DISCOVERY_LOW_LEVEL_Private_Variables STM32F4 DISCOVERY LOW LEVEL Private Variables
* @{
*/
GPIO_TypeDef* GPIO_PORT[LEDn] = {LED4_GPIO_PORT,
LED3_GPIO_PORT,
LED5_GPIO_PORT,
LED6_GPIO_PORT};
const uint16_t GPIO_PIN[LEDn] = {LED4_PIN,
LED3_PIN,
LED5_PIN,
LED6_PIN};
GPIO_TypeDef* BUTTON_PORT[BUTTONn] = {KEY_BUTTON_GPIO_PORT};
const uint16_t BUTTON_PIN[BUTTONn] = {KEY_BUTTON_PIN};
const uint8_t BUTTON_IRQn[BUTTONn] = {KEY_BUTTON_EXTI_IRQn};
uint32_t I2cxTimeout = I2Cx_TIMEOUT_MAX; /*<! Value of Timeout when I2C communication fails */
uint32_t SpixTimeout = SPIx_TIMEOUT_MAX; /*<! Value of Timeout when SPI communication fails */
static SPI_HandleTypeDef SpiHandle;
static I2C_HandleTypeDef I2cHandle;
/**
* @}
*/
/** @defgroup STM32F4_DISCOVERY_LOW_LEVEL_Private_FunctionPrototypes STM32F4 DISCOVERY LOW LEVEL Private FunctionPrototypes
* @{
*/
/**
* @}
*/
/** @defgroup STM32F4_DISCOVERY_LOW_LEVEL_Private_Functions STM32F4 DISCOVERY LOW LEVEL Private Functions
* @{
*/
static void I2Cx_Init(void);
static void I2Cx_WriteData(uint8_t Addr, uint8_t Reg, uint8_t Value);
static uint8_t I2Cx_ReadData(uint8_t Addr, uint8_t Reg);
static void I2Cx_MspInit(void);
static void I2Cx_Error(uint8_t Addr);
static void SPIx_Init(void);
static void SPIx_MspInit(void);
static uint8_t SPIx_WriteRead(uint8_t Byte);
static void SPIx_Error(void);
/* Link functions for Accelerometer peripheral */
void ACCELERO_IO_Init(void);
void ACCELERO_IO_ITConfig(void);
void ACCELERO_IO_Write(uint8_t *pBuffer, uint8_t WriteAddr, uint16_t NumByteToWrite);
void ACCELERO_IO_Read(uint8_t *pBuffer, uint8_t ReadAddr, uint16_t NumByteToRead);
/* Link functions for Audio peripheral */
void AUDIO_IO_Init(void);
void AUDIO_IO_DeInit(void);
void AUDIO_IO_Write(uint8_t Addr, uint8_t Reg, uint8_t Value);
uint8_t AUDIO_IO_Read(uint8_t Addr, uint8_t Reg);
/**
* @}
*/
/** @defgroup STM32F4_DISCOVERY_LOW_LEVEL_LED_Functions STM32F4 DISCOVERY LOW LEVEL LED Functions
* @{
*/
/**
* @brief This method returns the STM32F4 DISCO BSP Driver revision
* @retval version : 0xXYZR (8bits for each decimal, R for RC)
*/
uint32_t BSP_GetVersion(void)
{
return __STM32F4_DISCO_BSP_VERSION;
}
/**
* @brief Configures LED GPIO.
* @param Led: Specifies the Led to be configured.
* This parameter can be one of following parameters:
* @arg LED4
* @arg LED3
* @arg LED5
* @arg LED6
*/
void BSP_LED_Init(Led_TypeDef Led)
{
GPIO_InitTypeDef GPIO_InitStruct;
/* Enable the GPIO_LED Clock */
LEDx_GPIO_CLK_ENABLE(Led);
/* Configure the GPIO_LED pin */
GPIO_InitStruct.Pin = GPIO_PIN[Led];
GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStruct.Pull = GPIO_PULLUP;
GPIO_InitStruct.Speed = GPIO_SPEED_FAST;
HAL_GPIO_Init(GPIO_PORT[Led], &GPIO_InitStruct);
HAL_GPIO_WritePin(GPIO_PORT[Led], GPIO_PIN[Led], GPIO_PIN_RESET);
}
/**
* @brief Turns selected LED On.
* @param Led: Specifies the Led to be set on.
* This parameter can be one of following parameters:
* @arg LED4
* @arg LED3
* @arg LED5
* @arg LED6
*/
void BSP_LED_On(Led_TypeDef Led)
{
HAL_GPIO_WritePin(GPIO_PORT[Led], GPIO_PIN[Led], GPIO_PIN_SET);
}
/**
* @brief Turns selected LED Off.
* @param Led: Specifies the Led to be set off.
* This parameter can be one of following parameters:
* @arg LED4
* @arg LED3
* @arg LED5
* @arg LED6
*/
void BSP_LED_Off(Led_TypeDef Led)
{
HAL_GPIO_WritePin(GPIO_PORT[Led], GPIO_PIN[Led], GPIO_PIN_RESET);
}
/**
* @brief Toggles the selected LED.
* @param Led: Specifies the Led to be toggled.
* This parameter can be one of following parameters:
* @arg LED4
* @arg LED3
* @arg LED5
* @arg LED6
*/
void BSP_LED_Toggle(Led_TypeDef Led)
{
HAL_GPIO_TogglePin(GPIO_PORT[Led], GPIO_PIN[Led]);
}
/**
* @}
*/
/** @defgroup STM32F4_DISCOVERY_LOW_LEVEL_BUTTON_Functions STM32F4 DISCOVERY LOW LEVEL BUTTON Functions
* @{
*/
/**
* @brief Configures Button GPIO and EXTI Line.
* @param Button: Specifies the Button to be configured.
* This parameter should be: BUTTON_KEY
* @param Mode: Specifies Button mode.
* This parameter can be one of following parameters:
* @arg BUTTON_MODE_GPIO: Button will be used as simple IO
* @arg BUTTON_MODE_EXTI: Button will be connected to EXTI line with interrupt
* generation capability
*/
void BSP_PB_Init(Button_TypeDef Button, ButtonMode_TypeDef Mode)
{
GPIO_InitTypeDef GPIO_InitStruct;
/* Enable the BUTTON Clock */
BUTTONx_GPIO_CLK_ENABLE(Button);
if (Mode == BUTTON_MODE_GPIO)
{
/* Configure Button pin as input */
GPIO_InitStruct.Pin = BUTTON_PIN[Button];
GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FAST;
HAL_GPIO_Init(BUTTON_PORT[Button], &GPIO_InitStruct);
}
if (Mode == BUTTON_MODE_EXTI)
{
/* Configure Button pin as input with External interrupt */
GPIO_InitStruct.Pin = BUTTON_PIN[Button];
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FAST;
GPIO_InitStruct.Mode = GPIO_MODE_IT_RISING;
HAL_GPIO_Init(BUTTON_PORT[Button], &GPIO_InitStruct);
/* Enable and set Button EXTI Interrupt to the lowest priority */
HAL_NVIC_SetPriority((IRQn_Type)(BUTTON_IRQn[Button]), 0x0F, 0);
HAL_NVIC_EnableIRQ((IRQn_Type)(BUTTON_IRQn[Button]));
}
}
/**
* @brief Returns the selected Button state.
* @param Button: Specifies the Button to be checked.
* This parameter should be: BUTTON_KEY
* @retval The Button GPIO pin value.
*/
uint32_t BSP_PB_GetState(Button_TypeDef Button)
{
return HAL_GPIO_ReadPin(BUTTON_PORT[Button], BUTTON_PIN[Button]);
}
/**
* @}
*/
/** @defgroup STM32F4_DISCOVERY_LOW_LEVEL_BUS_Functions STM32F4 DISCOVERY LOW LEVEL BUS Functions
* @{
*/
/*******************************************************************************
BUS OPERATIONS
*******************************************************************************/
/******************************* SPI Routines *********************************/
/**
* @brief SPIx Bus initialization
*/
static void SPIx_Init(void)
{
if(HAL_SPI_GetState(&SpiHandle) == HAL_SPI_STATE_RESET)
{
/* SPI configuration -----------------------------------------------------*/
SpiHandle.Instance = DISCOVERY_SPIx;
SpiHandle.Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_16;
SpiHandle.Init.Direction = SPI_DIRECTION_2LINES;
SpiHandle.Init.CLKPhase = SPI_PHASE_1EDGE;
SpiHandle.Init.CLKPolarity = SPI_POLARITY_LOW;
SpiHandle.Init.CRCCalculation = SPI_CRCCALCULATION_DISABLED;
SpiHandle.Init.CRCPolynomial = 7;
SpiHandle.Init.DataSize = SPI_DATASIZE_8BIT;
SpiHandle.Init.FirstBit = SPI_FIRSTBIT_MSB;
SpiHandle.Init.NSS = SPI_NSS_SOFT;
SpiHandle.Init.TIMode = SPI_TIMODE_DISABLED;
SpiHandle.Init.Mode = SPI_MODE_MASTER;
SPIx_MspInit();
HAL_SPI_Init(&SpiHandle);
}
}
/**
* @brief Sends a Byte through the SPI interface and return the Byte received
* from the SPI bus.
* @param Byte: Byte send.
* @retval The received byte value
*/
static uint8_t SPIx_WriteRead(uint8_t Byte)
{
uint8_t receivedbyte = 0;
/* Send a Byte through the SPI peripheral */
/* Read byte from the SPI bus */
if(HAL_SPI_TransmitReceive(&SpiHandle, (uint8_t*) &Byte, (uint8_t*) &receivedbyte, 1, SpixTimeout) != HAL_OK)
{
SPIx_Error();
}
return receivedbyte;
}
/**
* @brief SPIx error treatment function.
*/
static void SPIx_Error(void)
{
/* De-initialize the SPI communication bus */
HAL_SPI_DeInit(&SpiHandle);
/* Re-Initialize the SPI communication bus */
SPIx_Init();
}
/**
* @brief SPI MSP Init.
*/
static void SPIx_MspInit(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
/* Enable the SPI peripheral */
DISCOVERY_SPIx_CLK_ENABLE();
/* Enable SCK, MOSI and MISO GPIO clocks */
DISCOVERY_SPIx_GPIO_CLK_ENABLE();
/* SPI SCK, MOSI, MISO pin configuration */
GPIO_InitStructure.Pin = (DISCOVERY_SPIx_SCK_PIN | DISCOVERY_SPIx_MISO_PIN | DISCOVERY_SPIx_MOSI_PIN);
GPIO_InitStructure.Mode = GPIO_MODE_AF_PP;
GPIO_InitStructure.Pull = GPIO_PULLDOWN;
GPIO_InitStructure.Speed = GPIO_SPEED_MEDIUM;
GPIO_InitStructure.Alternate = DISCOVERY_SPIx_AF;
HAL_GPIO_Init(DISCOVERY_SPIx_GPIO_PORT, &GPIO_InitStructure);
}
/******************************* I2C Routines**********************************/
/**
* @brief Configures I2C interface.
*/
static void I2Cx_Init(void)
{
if(HAL_I2C_GetState(&I2cHandle) == HAL_I2C_STATE_RESET)
{
/* DISCOVERY_I2Cx peripheral configuration */
I2cHandle.Init.ClockSpeed = BSP_I2C_SPEED;
I2cHandle.Init.DutyCycle = I2C_DUTYCYCLE_2;
I2cHandle.Init.OwnAddress1 = 0x33;
I2cHandle.Init.AddressingMode = I2C_ADDRESSINGMODE_7BIT;
I2cHandle.Instance = DISCOVERY_I2Cx;
/* Init the I2C */
I2Cx_MspInit();
HAL_I2C_Init(&I2cHandle);
}
}
/**
* @brief Write a value in a register of the device through BUS.
* @param Addr: Device address on BUS Bus.
* @param Reg: The target register address to write
* @param Value: The target register value to be written
* @retval HAL status
*/
static void I2Cx_WriteData(uint8_t Addr, uint8_t Reg, uint8_t Value)
{
HAL_StatusTypeDef status = HAL_OK;
status = HAL_I2C_Mem_Write(&I2cHandle, Addr, (uint16_t)Reg, I2C_MEMADD_SIZE_8BIT, &Value, 1, I2cxTimeout);
/* Check the communication status */
if(status != HAL_OK)
{
/* Execute user timeout callback */
I2Cx_Error(Addr);
}
}
/**
* @brief Read a register of the device through BUS
* @param Addr: Device address on BUS
* @param Reg: The target register address to read
* @retval HAL status
*/
static uint8_t I2Cx_ReadData(uint8_t Addr, uint8_t Reg)
{
HAL_StatusTypeDef status = HAL_OK;
uint8_t value = 0;
status = HAL_I2C_Mem_Read(&I2cHandle, Addr, (uint16_t)Reg, I2C_MEMADD_SIZE_8BIT, &value, 1,I2cxTimeout);
/* Check the communication status */
if(status != HAL_OK)
{
/* Execute user timeout callback */
I2Cx_Error(Addr);
}
return value;
}
/**
* @brief Manages error callback by re-initializing I2C.
* @param Addr: I2C Address
*/
static void I2Cx_Error(uint8_t Addr)
{
/* De-initialize the I2C communication bus */
HAL_I2C_DeInit(&I2cHandle);
/* Re-Initialize the I2C communication bus */
I2Cx_Init();
}
/**
* @brief I2C MSP Initialization
*/
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);
}
/*******************************************************************************
LINK OPERATIONS
*******************************************************************************/
/***************************** LINK ACCELEROMETER *****************************/
/**
* @brief Configures the Accelerometer SPI interface.
*/
void ACCELERO_IO_Init(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
/* Configure the Accelerometer Control pins --------------------------------*/
/* Enable CS GPIO clock and configure GPIO pin for Accelerometer Chip select */
ACCELERO_CS_GPIO_CLK_ENABLE();
/* Configure GPIO PIN for LIS Chip select */
GPIO_InitStructure.Pin = ACCELERO_CS_PIN;
GPIO_InitStructure.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStructure.Pull = GPIO_NOPULL;
GPIO_InitStructure.Speed = GPIO_SPEED_MEDIUM;
HAL_GPIO_Init(ACCELERO_CS_GPIO_PORT, &GPIO_InitStructure);
/* Deselect: Chip Select high */
ACCELERO_CS_HIGH();
SPIx_Init();
}
/**
* @brief Configures the Accelerometer INT2.
* EXTI0 is already used by user button so INT1 is not configured here.
*/
void ACCELERO_IO_ITConfig(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
/* Enable INT2 GPIO clock and configure GPIO PINs to detect Interrupts */
ACCELERO_INT_GPIO_CLK_ENABLE();
/* Configure GPIO PINs to detect Interrupts */
GPIO_InitStructure.Pin = ACCELERO_INT2_PIN;
GPIO_InitStructure.Mode = GPIO_MODE_IT_RISING;
GPIO_InitStructure.Speed = GPIO_SPEED_FAST;
GPIO_InitStructure.Pull = GPIO_NOPULL;
HAL_GPIO_Init(ACCELERO_INT_GPIO_PORT, &GPIO_InitStructure);
/* Enable and set Accelerometer INT2 to the lowest priority */
HAL_NVIC_SetPriority((IRQn_Type)ACCELERO_INT2_EXTI_IRQn, 0x0F, 0);
HAL_NVIC_EnableIRQ((IRQn_Type)ACCELERO_INT2_EXTI_IRQn);
}
/**
* @brief Writes one byte to the Accelerometer.
* @param pBuffer: pointer to the buffer containing the data to be written to the Accelerometer.
* @param WriteAddr: Accelerometer's internal address to write to.
* @param NumByteToWrite: Number of bytes to write.
*/
void ACCELERO_IO_Write(uint8_t *pBuffer, uint8_t WriteAddr, uint16_t NumByteToWrite)
{
/* Configure the MS bit:
- When 0, the address will remain unchanged in multiple read/write commands.
- When 1, the address will be auto incremented in multiple read/write commands.
*/
if(NumByteToWrite > 0x01)
{
WriteAddr |= (uint8_t)MULTIPLEBYTE_CMD;
}
/* Set chip select Low at the start of the transmission */
ACCELERO_CS_LOW();
/* Send the Address of the indexed register */
SPIx_WriteRead(WriteAddr);
/* Send the data that will be written into the device (MSB First) */
while(NumByteToWrite >= 0x01)
{
SPIx_WriteRead(*pBuffer);
NumByteToWrite--;
pBuffer++;
}
/* Set chip select High at the end of the transmission */
ACCELERO_CS_HIGH();
}
/**
* @brief Reads a block of data from the Accelerometer.
* @param pBuffer: pointer to the buffer that receives the data read from the Accelerometer.
* @param ReadAddr: Accelerometer's internal address to read from.
* @param NumByteToRead: number of bytes to read from the Accelerometer.
*/
void ACCELERO_IO_Read(uint8_t *pBuffer, uint8_t ReadAddr, uint16_t NumByteToRead)
{
if(NumByteToRead > 0x01)
{
ReadAddr |= (uint8_t)(READWRITE_CMD | MULTIPLEBYTE_CMD);
}
else
{
ReadAddr |= (uint8_t)READWRITE_CMD;
}
/* Set chip select Low at the start of the transmission */
ACCELERO_CS_LOW();
/* Send the Address of the indexed register */
SPIx_WriteRead(ReadAddr);
/* Receive the data that will be read from the device (MSB First) */
while(NumByteToRead > 0x00)
{
/* Send dummy byte (0x00) to generate the SPI clock to ACCELEROMETER (Slave device) */
*pBuffer = SPIx_WriteRead(DUMMY_BYTE);
NumByteToRead--;
pBuffer++;
}
/* Set chip select High at the end of the transmission */
ACCELERO_CS_HIGH();
}
/********************************* LINK AUDIO *********************************/
/**
* @brief Initializes Audio low level.
*/
void AUDIO_IO_Init(void)
{
GPIO_InitTypeDef GPIO_InitStruct;
/* Enable Reset GPIO Clock */
AUDIO_RESET_GPIO_CLK_ENABLE();
/* Audio reset pin configuration */
GPIO_InitStruct.Pin = AUDIO_RESET_PIN;
GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStruct.Speed = GPIO_SPEED_FAST;
GPIO_InitStruct.Pull = GPIO_NOPULL;
HAL_GPIO_Init(AUDIO_RESET_GPIO, &GPIO_InitStruct);
I2Cx_Init();
/* Power Down the codec */
HAL_GPIO_WritePin(AUDIO_RESET_GPIO, AUDIO_RESET_PIN, GPIO_PIN_RESET);
/* Wait for a delay to insure registers erasing */
HAL_Delay(5);
/* Power on the codec */
HAL_GPIO_WritePin(AUDIO_RESET_GPIO, AUDIO_RESET_PIN, GPIO_PIN_SET);
/* Wait for a delay to insure registers erasing */
HAL_Delay(5);
}
/**
* @brief DeInitializes Audio low level.
*/
void AUDIO_IO_DeInit(void)
{
}
/**
* @brief Writes a single data.
* @param Addr: I2C address
* @param Reg: Reg address
* @param Value: Data to be written
*/
void AUDIO_IO_Write (uint8_t Addr, uint8_t Reg, uint8_t Value)
{
I2Cx_WriteData(Addr, Reg, Value);
}
/**
* @brief Reads a single data.
* @param Addr: I2C address
* @param Reg: Reg address
* @retval Data to be read
*/
uint8_t AUDIO_IO_Read(uint8_t Addr, uint8_t Reg)
{
return I2Cx_ReadData(Addr, Reg);
}
/**
* @}
*/
/**
* @}
*/
/**
* @}
*/
/**
* @}
*/
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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