ref: a8d8a94bfac9a6dfcbbfb463f62444f968637d5a
dir: /demos/stm32f429_disco/stm/stm32f429/stm32f429i_discovery.c/
/**
******************************************************************************
* @file stm32f429i_discovery.c
* @author MCD Application Team
* @version V1.0.1
* @date 28-October-2013
* @brief This file provides set of firmware functions to manage Leds and
* push-button available on STM32F429I-DISCO Kit from STMicroelectronics.
******************************************************************************
* @attention
*
* <h2><center>© COPYRIGHT 2013 STMicroelectronics</center></h2>
*
* Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
* You may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.st.com/software_license_agreement_liberty_v2
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
******************************************************************************
*/
/* Includes ------------------------------------------------------------------*/
#include "stm32f429i_discovery.h"
/** @addtogroup Utilities
* @{
*/
/** @addtogroup STM32F4_DISCOVERY
* @{
*/
/** @addtogroup STM32F429I_DISCOVERY
* @{
*/
/** @defgroup STM32F429I-DISCOVERY_LOW_LEVEL
* @brief This file provides set of firmware functions to manage Leds and push-button
* available on STM32F429I-Discovery Kit from STMicroelectronics.
* @{
*/
/** @defgroup STM32F429I-DISCOVERY_LOW_LEVEL_Private_TypesDefinitions
* @{
*/
/**
* @}
*/
/** @defgroup STM32F429I-DISCOVERY_LOW_LEVEL_Private_Defines
* @{
*/
/**
* @}
*/
/** @defgroup STM32F429I-DISCOVERY_LOW_LEVEL_Private_Macros
* @{
*/
/**
* @}
*/
/** @defgroup STM32F429I-DISCOVERY_LOW_LEVEL_Private_Variables
* @{
*/
GPIO_TypeDef* GPIO_PORT[LEDn] = {LED3_GPIO_PORT, LED4_GPIO_PORT};
const uint16_t GPIO_PIN[LEDn] = {LED3_PIN, LED4_PIN};
const uint32_t GPIO_CLK[LEDn] = {LED3_GPIO_CLK, LED4_GPIO_CLK};
GPIO_TypeDef* BUTTON_PORT[BUTTONn] = {USER_BUTTON_GPIO_PORT};
const uint16_t BUTTON_PIN[BUTTONn] = {USER_BUTTON_PIN};
const uint32_t BUTTON_CLK[BUTTONn] = {USER_BUTTON_GPIO_CLK};
const uint16_t BUTTON_EXTI_LINE[BUTTONn] = {USER_BUTTON_EXTI_LINE};
const uint8_t BUTTON_PORT_SOURCE[BUTTONn] = {USER_BUTTON_EXTI_PORT_SOURCE};
const uint8_t BUTTON_PIN_SOURCE[BUTTONn] = {USER_BUTTON_EXTI_PIN_SOURCE};
const uint8_t BUTTON_IRQn[BUTTONn] = {USER_BUTTON_EXTI_IRQn};
DMA_InitTypeDef sEEDMA_InitStructure;
NVIC_InitTypeDef NVIC_InitStructure;
/**
* @}
*/
/** @defgroup STM32F429I-DISCOVERY_LOW_LEVEL_Private_FunctionPrototypes
* @{
*/
/**
* @}
*/
/** @defgroup STM32F429I-DISCOVERY_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 LED3
* @arg LED4
* @retval None
*/
void STM_EVAL_LEDInit(Led_TypeDef Led)
{
GPIO_InitTypeDef GPIO_InitStructure;
/* Enable the GPIO_LED Clock */
RCC_AHB1PeriphClockCmd(GPIO_CLK[Led], ENABLE);
/* Configure the GPIO_LED pin */
GPIO_InitStructure.GPIO_Pin = GPIO_PIN[Led];
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
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 LED3
* @arg LED4
* @retval None
*/
void STM_EVAL_LEDOn(Led_TypeDef Led)
{
GPIO_PORT[Led]->BSRRL = 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 LED3
* @arg LED4
* @retval None
*/
void STM_EVAL_LEDOff(Led_TypeDef Led)
{
GPIO_PORT[Led]->BSRRH = 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 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 should be: BUTTON_USER
* @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_AHB1PeriphClockCmd(BUTTON_CLK[Button], ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_SYSCFG, ENABLE);
/* Configure Button pin as input */
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_DOWN;
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 */
SYSCFG_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;
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 should be: BUTTON_USER
* @retval The Button GPIO pin value.
*/
uint32_t STM_EVAL_PBGetState(Button_TypeDef Button)
{
return GPIO_ReadInputDataBit(BUTTON_PORT[Button], BUTTON_PIN[Button]);
}
/**
* @brief DeInitializes peripherals used by the I2C EEPROM driver.
* @param None
* @retval None
*/
void sEE_LowLevel_DeInit(void)
{
GPIO_InitTypeDef GPIO_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;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
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 Stream 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 Stream 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 Streams */
DMA_Cmd(sEE_I2C_DMA_STREAM_TX, DISABLE);
DMA_Cmd(sEE_I2C_DMA_STREAM_RX, DISABLE);
DMA_DeInit(sEE_I2C_DMA_STREAM_TX);
DMA_DeInit(sEE_I2C_DMA_STREAM_RX);
}
/**
* @brief Initializes peripherals used by the I2C EEPROM driver.
* @param None
* @retval None
*/
void sEE_LowLevel_Init(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
/*!< sEE_I2C Periph clock enable */
RCC_APB1PeriphClockCmd(sEE_I2C_CLK, ENABLE);
/*!< sEE_I2C_SCL_GPIO_CLK and sEE_I2C_SDA_GPIO_CLK Periph clock enable */
RCC_AHB1PeriphClockCmd(sEE_I2C_SCL_GPIO_CLK | sEE_I2C_SDA_GPIO_CLK, ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_SYSCFG, ENABLE);
/* Reset sEE_I2C IP */
RCC_APB1PeriphResetCmd(sEE_I2C_CLK, ENABLE);
/* Release reset signal of sEE_I2C IP */
RCC_APB1PeriphResetCmd(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_AF;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_OType = GPIO_OType_OD;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
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);
/* Connect PXx to I2C_SCL*/
GPIO_PinAFConfig(sEE_I2C_SCL_GPIO_PORT, sEE_I2C_SCL_SOURCE, sEE_I2C_SCL_AF);
/* Connect PXx to I2C_SDA*/
GPIO_PinAFConfig(sEE_I2C_SDA_GPIO_PORT, sEE_I2C_SDA_SOURCE, sEE_I2C_SDA_AF);
/* 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_AHB1PeriphClockCmd(sEE_I2C_DMA_CLK, ENABLE);
/* Clear any pending flag on Rx Stream */
DMA_ClearFlag(sEE_I2C_DMA_STREAM_TX, sEE_TX_DMA_FLAG_FEIF | sEE_TX_DMA_FLAG_DMEIF | sEE_TX_DMA_FLAG_TEIF | \
sEE_TX_DMA_FLAG_HTIF | sEE_TX_DMA_FLAG_TCIF);
/* Disable the EE I2C Tx DMA stream */
DMA_Cmd(sEE_I2C_DMA_STREAM_TX, DISABLE);
/* Configure the DMA stream for the EE I2C peripheral TX direction */
DMA_DeInit(sEE_I2C_DMA_STREAM_TX);
sEEDMA_InitStructure.DMA_Channel = sEE_I2C_DMA_CHANNEL;
sEEDMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)sEE_I2C_DR_Address;
sEEDMA_InitStructure.DMA_Memory0BaseAddr = (uint32_t)0; /* This parameter will be configured durig communication */;
sEEDMA_InitStructure.DMA_DIR = DMA_DIR_MemoryToPeripheral; /* 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_PeripheralDataSize_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_FIFOMode = DMA_FIFOMode_Enable;
sEEDMA_InitStructure.DMA_FIFOThreshold = DMA_FIFOThreshold_Full;
sEEDMA_InitStructure.DMA_MemoryBurst = DMA_MemoryBurst_Single;
sEEDMA_InitStructure.DMA_PeripheralBurst = DMA_PeripheralBurst_Single;
DMA_Init(sEE_I2C_DMA_STREAM_TX, &sEEDMA_InitStructure);
/* Clear any pending flag on Rx Stream */
DMA_ClearFlag(sEE_I2C_DMA_STREAM_RX, sEE_RX_DMA_FLAG_FEIF | sEE_RX_DMA_FLAG_DMEIF | sEE_RX_DMA_FLAG_TEIF | \
sEE_RX_DMA_FLAG_HTIF | sEE_RX_DMA_FLAG_TCIF);
/* Disable the EE I2C DMA Rx stream */
DMA_Cmd(sEE_I2C_DMA_STREAM_RX, DISABLE);
/* Configure the DMA stream for the EE I2C peripheral RX direction */
DMA_DeInit(sEE_I2C_DMA_STREAM_RX);
DMA_Init(sEE_I2C_DMA_STREAM_RX, &sEEDMA_InitStructure);
/* Enable the DMA Channels Interrupts */
DMA_ITConfig(sEE_I2C_DMA_STREAM_TX, DMA_IT_TC, ENABLE);
DMA_ITConfig(sEE_I2C_DMA_STREAM_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 Stream with the buffer address and the buffer size */
sEEDMA_InitStructure.DMA_Memory0BaseAddr = (uint32_t)pBuffer;
sEEDMA_InitStructure.DMA_DIR = DMA_DIR_MemoryToPeripheral;
sEEDMA_InitStructure.DMA_BufferSize = (uint32_t)BufferSize;
DMA_Init(sEE_I2C_DMA_STREAM_TX, &sEEDMA_InitStructure);
}
else
{
/* Configure the DMA Rx Stream with the buffer address and the buffer size */
sEEDMA_InitStructure.DMA_Memory0BaseAddr = (uint32_t)pBuffer;
sEEDMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralToMemory;
sEEDMA_InitStructure.DMA_BufferSize = (uint32_t)BufferSize;
DMA_Init(sEE_I2C_DMA_STREAM_RX, &sEEDMA_InitStructure);
}
}
/**
* @}
*/
/**
* @}
*/
/**
* @}
*/
/**
* @}
*/
/**
* @}
*/
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/