/**
******************************************************************************
* @file stm3210c_eval.c
* @author MCD Application Team
* @version V4.5.0
* @date 07-March-2011
* @brief This file provides
* - set of firmware functions to manage Leds, push-button and COM ports
* - low level initialization functions for SD card (on SPI) and I2C
* serial EEPROM (sEE)
* available on STM3210C-EVAL evaluation board from STMicroelectronics.
******************************************************************************
* @attention
*
* THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
* WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE
* TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY
* DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING
* FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
* CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
*
* <h2><center>© COPYRIGHT 2011 STMicroelectronics</center></h2>
******************************************************************************
*/
/* Includes ------------------------------------------------------------------*/
#include "stm3210c_eval.h"
#include "stm32f10x_spi.h"
#include "stm32f10x_i2c.h"
#include "stm32f10x_dma.h"
/** @addtogroup Utilities
* @{
*/
/** @addtogroup STM32_EVAL
* @{
*/
/** @addtogroup STM3210C_EVAL
* @{
*/
/** @defgroup STM3210C_EVAL_LOW_LEVEL
* @brief This file provides firmware functions to manage Leds, push-buttons,
* COM ports, SD card on SPI and EEPROM (sEE) available on STM3210C-EVAL
* evaluation board from STMicroelectronics.
* @{
*/
/** @defgroup STM3210C_EVAL_LOW_LEVEL_Private_TypesDefinitions
* @{
*/
/**
* @}
*/
/** @defgroup STM3210C_EVAL_LOW_LEVEL_Private_Defines
* @{
*/
/**
* @}
*/
/** @defgroup STM3210C_EVAL_LOW_LEVEL_Private_Macros
* @{
*/
/**
* @}
*/
/** @defgroup STM3210C_EVAL_LOW_LEVEL_Private_Variables
* @{
*/
GPIO_TypeDef* GPIO_PORT[LEDn] = {LED1_GPIO_PORT, LED2_GPIO_PORT, LED3_GPIO_PORT,
LED4_GPIO_PORT};
const uint16_t GPIO_PIN[LEDn] = {LED1_PIN, LED2_PIN, LED3_PIN,
LED4_PIN};
const uint32_t GPIO_CLK[LEDn] = {LED1_GPIO_CLK, LED2_GPIO_CLK, LED3_GPIO_CLK,
LED4_GPIO_CLK};
GPIO_TypeDef* BUTTON_PORT[BUTTONn] = {WAKEUP_BUTTON_GPIO_PORT, TAMPER_BUTTON_GPIO_PORT,
KEY_BUTTON_GPIO_PORT};
const uint16_t BUTTON_PIN[BUTTONn] = {WAKEUP_BUTTON_PIN, TAMPER_BUTTON_PIN,
KEY_BUTTON_PIN};
const uint32_t BUTTON_CLK[BUTTONn] = {WAKEUP_BUTTON_GPIO_CLK, TAMPER_BUTTON_GPIO_CLK,
KEY_BUTTON_GPIO_CLK};
const uint16_t BUTTON_EXTI_LINE[BUTTONn] = {WAKEUP_BUTTON_EXTI_LINE,
TAMPER_BUTTON_EXTI_LINE,
KEY_BUTTON_EXTI_LINE};
const uint16_t BUTTON_PORT_SOURCE[BUTTONn] = {WAKEUP_BUTTON_EXTI_PORT_SOURCE,
TAMPER_BUTTON_EXTI_PORT_SOURCE,
KEY_BUTTON_EXTI_PORT_SOURCE};
const uint16_t BUTTON_PIN_SOURCE[BUTTONn] = {WAKEUP_BUTTON_EXTI_PIN_SOURCE,
TAMPER_BUTTON_EXTI_PIN_SOURCE,
KEY_BUTTON_EXTI_PIN_SOURCE};
const uint16_t BUTTON_IRQn[BUTTONn] = {WAKEUP_BUTTON_EXTI_IRQn, TAMPER_BUTTON_EXTI_IRQn,
KEY_BUTTON_EXTI_IRQn};
USART_TypeDef* COM_USART[COMn] = {EVAL_COM1};
GPIO_TypeDef* COM_TX_PORT[COMn] = {EVAL_COM1_TX_GPIO_PORT};
GPIO_TypeDef* COM_RX_PORT[COMn] = {EVAL_COM1_RX_GPIO_PORT};
const uint32_t COM_USART_CLK[COMn] = {EVAL_COM1_CLK};
const uint32_t COM_TX_PORT_CLK[COMn] = {EVAL_COM1_TX_GPIO_CLK};
const uint32_t COM_RX_PORT_CLK[COMn] = {EVAL_COM1_RX_GPIO_CLK};
const uint16_t COM_TX_PIN[COMn] = {EVAL_COM1_TX_PIN};
const uint16_t COM_RX_PIN[COMn] = {EVAL_COM1_RX_PIN};
DMA_InitTypeDef sEEDMA_InitStructure;
/**
* @}
*/
/** @defgroup STM3210C_EVAL_LOW_LEVEL_Private_FunctionPrototypes
* @{
*/
/**
* @}
*/
/** @defgroup STM3210C_EVAL_LOW_LEVEL_Private_Functions
* @{
*/
/**
* @brief Configures LED GPIO.
* @param Led: Specifies the Led to be configured.
* This parameter can be one of following parameters:
* @arg LED1
* @arg LED2
* @arg LED3
* @arg LED4
* @retval None
*/
void STM_EVAL_LEDInit(Led_TypeDef Led)
{
GPIO_InitTypeDef GPIO_InitStructure;
/* Enable the GPIO_LED Clock */
RCC_APB2PeriphClockCmd(GPIO_CLK[Led], ENABLE);
/* Configure the GPIO_LED pin */
GPIO_InitStructure.GPIO_Pin = GPIO_PIN[Led];
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIO_PORT[Led], &GPIO_InitStructure);
}
/**
* @brief Turns selected LED On.
* @param Led: Specifies the Led to be set on.
* This parameter can be one of following parameters:
* @arg LED1
* @arg LED2
* @arg LED3
* @arg LED4
* @retval None
*/
void STM_EVAL_LEDOn(Led_TypeDef Led)
{
GPIO_PORT[Led]->BSRR = GPIO_PIN[Led];
}
/**
* @brief Turns selected LED Off.
* @param Led: Specifies the Led to be set off.
* This parameter can be one of following parameters:
* @arg LED1
* @arg LED2
* @arg LED3
* @arg LED4
* @retval None
*/
void STM_EVAL_LEDOff(Led_TypeDef Led)
{
GPIO_PORT[Led]->BRR = GPIO_PIN[Led];
}
/**
* @brief Toggles the selected LED.
* @param Led: Specifies the Led to be toggled.
* This parameter can be one of following parameters:
* @arg LED1
* @arg LED2
* @arg LED3
* @arg LED4
* @retval None
*/
void STM_EVAL_LEDToggle(Led_TypeDef Led)
{
GPIO_PORT[Led]->ODR ^= GPIO_PIN[Led];
}
/**
* @brief Configures Button GPIO and EXTI Line.
* @param Button: Specifies the Button to be configured.
* This parameter can be one of following parameters:
* @arg BUTTON_WAKEUP: Wakeup Push Button
* @arg BUTTON_TAMPER: Tamper Push Button
* @arg BUTTON_KEY: Key Push Button
* @arg BUTTON_RIGHT: Joystick Right Push Button
* @arg BUTTON_LEFT: Joystick Left Push Button
* @arg BUTTON_UP: Joystick Up Push Button
* @arg BUTTON_DOWN: Joystick Down Push Button
* @arg BUTTON_SEL: Joystick Sel Push Button
* @param Button_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
* @retval None
*/
void STM_EVAL_PBInit(Button_TypeDef Button, ButtonMode_TypeDef Button_Mode)
{
GPIO_InitTypeDef GPIO_InitStructure;
EXTI_InitTypeDef EXTI_InitStructure;
NVIC_InitTypeDef NVIC_InitStructure;
/* Enable the BUTTON Clock */
RCC_APB2PeriphClockCmd(BUTTON_CLK[Button] | RCC_APB2Periph_AFIO, ENABLE);
/* Configure Button pin as input floating */
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_InitStructure.GPIO_Pin = BUTTON_PIN[Button];
GPIO_Init(BUTTON_PORT[Button], &GPIO_InitStructure);
if (Button_Mode == BUTTON_MODE_EXTI)
{
/* Connect Button EXTI Line to Button GPIO Pin */
GPIO_EXTILineConfig(BUTTON_PORT_SOURCE[Button], BUTTON_PIN_SOURCE[Button]);
/* Configure Button EXTI line */
EXTI_InitStructure.EXTI_Line = BUTTON_EXTI_LINE[Button];
EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
if(Button != BUTTON_WAKEUP)
{
EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling;
}
else
{
EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Rising;
}
EXTI_InitStructure.EXTI_LineCmd = ENABLE;
EXTI_Init(&EXTI_InitStructure);
/* Enable and set Button EXTI Interrupt to the lowest priority */
NVIC_InitStructure.NVIC_IRQChannel = BUTTON_IRQn[Button];
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0x0F;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0x0F;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
}
}
/**
* @brief Returns the selected Button state.
* @param Button: Specifies the Button to be checked.
* This parameter can be one of following parameters:
* @arg BUTTON_WAKEUP: Wakeup Push Button
* @arg BUTTON_TAMPER: Tamper Push Button
* @arg BUTTON_KEY: Key Push Button
* @arg BUTTON_RIGHT: Joystick Right Push Button
* @arg BUTTON_LEFT: Joystick Left Push Button
* @arg BUTTON_UP: Joystick Up Push Button
* @arg BUTTON_DOWN: Joystick Down Push Button
* @arg BUTTON_SEL: Joystick Sel Push Button
* @retval The Button GPIO pin value.
*/
uint32_t STM_EVAL_PBGetState(Button_TypeDef Button)
{
return GPIO_ReadInputDataBit(BUTTON_PORT[Button], BUTTON_PIN[Button]);
}
/**
* @brief Configures COM port.
* @param COM: Specifies the COM port to be configured.
* This parameter can be one of following parameters:
* @arg COM1
* @arg COM2
* @param USART_InitStruct: pointer to a USART_InitTypeDef structure that
* contains the configuration information for the specified USART peripheral.
* @retval None
*/
void STM_EVAL_COMInit(COM_TypeDef COM, USART_InitTypeDef* USART_InitStruct)
{
GPIO_InitTypeDef GPIO_InitStructure;
/* Enable GPIO clock */
RCC_APB2PeriphClockCmd(COM_TX_PORT_CLK[COM] | COM_RX_PORT_CLK[COM] | RCC_APB2Periph_AFIO, ENABLE);
if (COM == COM1)
{
/* Enable the USART2 Pins Software Remapping */
GPIO_PinRemapConfig(GPIO_Remap_USART2, ENABLE);
RCC_APB1PeriphClockCmd(COM_USART_CLK[COM], ENABLE);
}
/* Configure USART Tx as alternate function push-pull */
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_InitStructure.GPIO_Pin = COM_TX_PIN[COM];
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(COM_TX_PORT[COM], &GPIO_InitStructure);
/* Configure USART Rx as input floating */
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_InitStructure.GPIO_Pin = COM_RX_PIN[COM];
GPIO_Init(COM_RX_PORT[COM], &GPIO_InitStructure);
/* USART configuration */
USART_Init(COM_USART[COM], USART_InitStruct);
/* Enable USART */
USART_Cmd(COM_USART[COM], ENABLE);
}
/**
* @brief DeInitializes the SD/SD communication.
* @param None
* @retval None
*/
void SD_LowLevel_DeInit(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
SPI_Cmd(SD_SPI, DISABLE); /*!< SD_SPI disable */
SPI_I2S_DeInit(SD_SPI); /*!< DeInitializes the SD_SPI */
/*!< SD_SPI Periph clock disable */
RCC_APB1PeriphClockCmd(SD_SPI_CLK, DISABLE);
/*!< DeRemap SPI3 Pins */
GPIO_PinRemapConfig(GPIO_Remap_SPI3, DISABLE);
/*!< Configure SD_SPI pins: SCK */
GPIO_InitStructure.GPIO_Pin = SD_SPI_SCK_PIN;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(SD_SPI_SCK_GPIO_PORT, &GPIO_InitStructure);
/*!< Configure SD_SPI pins: MISO */
GPIO_InitStructure.GPIO_Pin = SD_SPI_MISO_PIN;
GPIO_Init(SD_SPI_MISO_GPIO_PORT, &GPIO_InitStructure);
/*!< Configure SD_SPI pins: MOSI */
GPIO_InitStructure.GPIO_Pin = SD_SPI_MOSI_PIN;
GPIO_Init(SD_SPI_MOSI_GPIO_PORT, &GPIO_InitStructure);
/*!< Configure SD_SPI_CS_PIN pin: SD Card CS pin */
GPIO_InitStructure.GPIO_Pin = SD_CS_PIN;
GPIO_Init(SD_CS_GPIO_PORT, &GPIO_InitStructure);
/*!< Configure SD_SPI_DETECT_PIN pin: SD Card detect pin */
GPIO_InitStructure.GPIO_Pin = SD_DETECT_PIN;
GPIO_Init(SD_DETECT_GPIO_PORT, &GPIO_InitStructure);
}
/**
* @brief Initializes the SD_SPI and CS pins.
* @param None
* @retval None
*/
void SD_LowLevel_Init(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
SPI_InitTypeDef SPI_InitStructure;
/*!< SD_SPI_CS_GPIO, SD_SPI_MOSI_GPIO, SD_SPI_MISO_GPIO, SD_SPI_DETECT_GPIO
and SD_SPI_SCK_GPIO Periph clock enable */
RCC_APB2PeriphClockCmd(SD_CS_GPIO_CLK | SD_SPI_MOSI_GPIO_CLK | SD_SPI_MISO_GPIO_CLK |
SD_SPI_SCK_GPIO_CLK | SD_DETECT_GPIO_CLK, ENABLE);
/*!< SD_SPI Periph clock enable */
RCC_APB1PeriphClockCmd(SD_SPI_CLK, ENABLE);
/*!< AFIO Periph clock enable */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO, ENABLE);
/*!< Remap SPI3 Pins */
GPIO_PinRemapConfig(GPIO_Remap_SPI3,ENABLE);
/*!< Configure SD_SPI pins: SCK */
GPIO_InitStructure.GPIO_Pin = SD_SPI_SCK_PIN;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_Init(SD_SPI_SCK_GPIO_PORT, &GPIO_InitStructure);
/*!< Configure SD_SPI pins: MOSI */
GPIO_InitStructure.GPIO_Pin = SD_SPI_MOSI_PIN;
GPIO_Init(SD_SPI_MOSI_GPIO_PORT, &GPIO_InitStructure);
/*!< Configure SD_SPI pins: MISO */
GPIO_InitStructure.GPIO_Pin = SD_SPI_MISO_PIN;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(SD_SPI_MISO_GPIO_PORT, &GPIO_InitStructure);
/*!< Configure SD_SPI_CS_PIN pin: SD Card CS pin */
GPIO_InitStructure.GPIO_Pin = SD_CS_PIN;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_Init(SD_CS_GPIO_PORT, &GPIO_InitStructure);
/*!< Configure SD_SPI_DETECT_PIN pin: SD Card detect pin */
GPIO_InitStructure.GPIO_Pin = SD_DETECT_PIN;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;
GPIO_Init(SD_DETECT_GPIO_PORT, &GPIO_InitStructure);
/*!< SD_SPI Config */
SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex;
SPI_InitStructure.SPI_Mode = SPI_Mode_Master;
SPI_InitStructure.SPI_DataSize = SPI_DataSize_8b;
SPI_InitStructure.SPI_CPOL = SPI_CPOL_High;
SPI_InitStructure.SPI_CPHA = SPI_CPHA_2Edge;
SPI_InitStructure.SPI_NSS = SPI_NSS_Soft;
SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_2;
SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB;
SPI_InitStructure.SPI_CRCPolynomial = 7;
SPI_Init(SD_SPI, &SPI_InitStructure);
SPI_Cmd(SD_SPI, ENABLE); /*!< SD_SPI enable */
}
/**
* @brief DeInitializes peripherals used by the I2C EEPROM driver.
* @param None
* @retval None
*/
void sEE_LowLevel_DeInit(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
NVIC_InitTypeDef NVIC_InitStructure;
/* sEE_I2C Peripheral Disable */
I2C_Cmd(sEE_I2C, DISABLE);
/* sEE_I2C DeInit */
I2C_DeInit(sEE_I2C);
/*!< sEE_I2C Periph clock disable */
RCC_APB1PeriphClockCmd(sEE_I2C_CLK, DISABLE);
/*!< GPIO configuration */
/*!< Configure sEE_I2C pins: SCL */
GPIO_InitStructure.GPIO_Pin = sEE_I2C_SCL_PIN;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(sEE_I2C_SCL_GPIO_PORT, &GPIO_InitStructure);
/*!< Configure sEE_I2C pins: SDA */
GPIO_InitStructure.GPIO_Pin = sEE_I2C_SDA_PIN;
GPIO_Init(sEE_I2C_SDA_GPIO_PORT, &GPIO_InitStructure);
/* Configure and enable I2C DMA TX Channel interrupt */
NVIC_InitStructure.NVIC_IRQChannel = sEE_I2C_DMA_TX_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = sEE_I2C_DMA_PREPRIO;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = sEE_I2C_DMA_SUBPRIO;
NVIC_InitStructure.NVIC_IRQChannelCmd = DISABLE;
NVIC_Init(&NVIC_InitStructure);
/* Configure and enable I2C DMA RX Channel interrupt */
NVIC_InitStructure.NVIC_IRQChannel = sEE_I2C_DMA_RX_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = sEE_I2C_DMA_PREPRIO;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = sEE_I2C_DMA_SUBPRIO;
NVIC_Init(&NVIC_InitStructure);
/* Disable and Deinitialize the DMA channels */
DMA_Cmd(sEE_I2C_DMA_CHANNEL_TX, DISABLE);
DMA_Cmd(sEE_I2C_DMA_CHANNEL_RX, DISABLE);
DMA_DeInit(sEE_I2C_DMA_CHANNEL_TX);
DMA_DeInit(sEE_I2C_DMA_CHANNEL_RX);
}
/**
* @brief Initializes peripherals used by the I2C EEPROM driver.
* @param None
* @retval None
*/
void sEE_LowLevel_Init(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
NVIC_InitTypeDef NVIC_InitStructure;
/*!< sEE_I2C_SCL_GPIO_CLK and sEE_I2C_SDA_GPIO_CLK Periph clock enable */
RCC_APB2PeriphClockCmd(sEE_I2C_SCL_GPIO_CLK | sEE_I2C_SDA_GPIO_CLK, ENABLE);
/*!< sEE_I2C Periph clock enable */
RCC_APB1PeriphClockCmd(sEE_I2C_CLK, ENABLE);
/*!< GPIO configuration */
/*!< Configure sEE_I2C pins: SCL */
GPIO_InitStructure.GPIO_Pin = sEE_I2C_SCL_PIN;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_OD;
GPIO_Init(sEE_I2C_SCL_GPIO_PORT, &GPIO_InitStructure);
/*!< Configure sEE_I2C pins: SDA */
GPIO_InitStructure.GPIO_Pin = sEE_I2C_SDA_PIN;
GPIO_Init(sEE_I2C_SDA_GPIO_PORT, &GPIO_InitStructure);
/* Configure and enable I2C DMA TX Channel interrupt */
NVIC_InitStructure.NVIC_IRQChannel = sEE_I2C_DMA_TX_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = sEE_I2C_DMA_PREPRIO;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = sEE_I2C_DMA_SUBPRIO;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
/* Configure and enable I2C DMA RX Channel interrupt */
NVIC_InitStructure.NVIC_IRQChannel = sEE_I2C_DMA_RX_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = sEE_I2C_DMA_PREPRIO;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = sEE_I2C_DMA_SUBPRIO;
NVIC_Init(&NVIC_InitStructure);
/*!< I2C DMA TX and RX channels configuration */
/* Enable the DMA clock */
RCC_AHBPeriphClockCmd(sEE_I2C_DMA_CLK, ENABLE);
/* I2C TX DMA Channel configuration */
DMA_DeInit(sEE_I2C_DMA_CHANNEL_TX);
sEEDMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)sEE_I2C_DR_Address;
sEEDMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)0; /* This parameter will be configured durig communication */
sEEDMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralDST; /* This parameter will be configured durig communication */
sEEDMA_InitStructure.DMA_BufferSize = 0xFFFF; /* This parameter will be configured durig communication */
sEEDMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
sEEDMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;
sEEDMA_InitStructure.DMA_PeripheralDataSize = DMA_MemoryDataSize_Byte;
sEEDMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Byte;
sEEDMA_InitStructure.DMA_Mode = DMA_Mode_Normal;
sEEDMA_InitStructure.DMA_Priority = DMA_Priority_VeryHigh;
sEEDMA_InitStructure.DMA_M2M = DMA_M2M_Disable;
DMA_Init(sEE_I2C_DMA_CHANNEL_TX, &sEEDMA_InitStructure);
/* I2C RX DMA Channel configuration */
DMA_DeInit(sEE_I2C_DMA_CHANNEL_RX);
DMA_Init(sEE_I2C_DMA_CHANNEL_RX, &sEEDMA_InitStructure);
/* Enable the DMA Channels Interrupts */
DMA_ITConfig(sEE_I2C_DMA_CHANNEL_TX, DMA_IT_TC, ENABLE);
DMA_ITConfig(sEE_I2C_DMA_CHANNEL_RX, DMA_IT_TC, ENABLE);
}
/**
* @brief Initializes DMA channel used by the I2C EEPROM driver.
* @param None
* @retval None
*/
void sEE_LowLevel_DMAConfig(uint32_t pBuffer, uint32_t BufferSize, uint32_t Direction)
{
/* Initialize the DMA with the new parameters */
if (Direction == sEE_DIRECTION_TX)
{
/* Configure the DMA Tx Channel with the buffer address and the buffer size */
sEEDMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)pBuffer;
sEEDMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralDST;
sEEDMA_InitStructure.DMA_BufferSize = (uint32_t)BufferSize;
DMA_Init(sEE_I2C_DMA_CHANNEL_TX, &sEEDMA_InitStructure);
}
else
{
/* Configure the DMA Rx Channel with the buffer address and the buffer size */
sEEDMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)pBuffer;
sEEDMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC;
sEEDMA_InitStructure.DMA_BufferSize = (uint32_t)BufferSize;
DMA_Init(sEE_I2C_DMA_CHANNEL_RX, &sEEDMA_InitStructure);
}
}
/**
* @}
*/
/**
* @}
*/
/**
* @}
*/
/**
* @}
*/
/**
* @}
*/
/******************* (C) COPYRIGHT 2011 STMicroelectronics *****END OF FILE****/
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