/******************** (C) COPYRIGHT 2007 STMicroelectronics ******************** | |
* File Name : stm32f10x_i2c.c | |
* Author : MCD Application Team | |
* Date First Issued : 09/29/2006 | |
* Description : This file provides all the I2C firmware functions. | |
******************************************************************************** | |
* History: | |
* 04/02/2007: V0.2 | |
* 02/05/2007: V0.1 | |
* 09/29/2006: V0.01 | |
******************************************************************************** | |
* THE PRESENT SOFTWARE 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 SOFTWARE AND/OR THE USE MADE BY CUSTOMERS OF THE CODING | |
* INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS. | |
*******************************************************************************/ | |
/* Includes ------------------------------------------------------------------*/ | |
#include "stm32f10x_i2c.h" | |
#include "stm32f10x_rcc.h" | |
/* Private typedef -----------------------------------------------------------*/ | |
/* Private define ------------------------------------------------------------*/ | |
/* I2C SPE mask */ | |
#define CR1_PE_Set ((u16)0x0001) | |
#define CR1_PE_Reset ((u16)0xFFFE) | |
/* I2C DMAEN mask */ | |
#define CR2_DMAEN_Set ((u16)0x0800) | |
#define CR2_DMAEN_Reset ((u16)0xF7FF) | |
/* I2C LAST mask */ | |
#define CR2_LAST_Set ((u16)0x1000) | |
#define CR2_LAST_Reset ((u16)0xEFFF) | |
/* I2C START mask */ | |
#define CR1_START_Set ((u16)0x0100) | |
#define CR1_START_Reset ((u16)0xFEFF) | |
/* I2C STOP mask */ | |
#define CR1_STOP_Set ((u16)0x0200) | |
#define CR1_STOP_Reset ((u16)0xFDFF) | |
/* I2C ACK mask */ | |
#define CR1_ACK_Set ((u16)0x0400) | |
#define CR1_ACK_Reset ((u16)0xFBFF) | |
/* I2C ENGC mask */ | |
#define CR1_ENGC_Set ((u16)0x0040) | |
#define CR1_ENGC_Reset ((u16)0xFFBF) | |
/* I2C ADD0 mask */ | |
#define OAR1_ADD0_Set ((u16)0x0001) | |
#define OAR1_ADD0_Reset ((u16)0xFFFE) | |
/* I2C SWRST mask */ | |
#define CR1_SWRST_Set ((u16)0x8000) | |
#define CR1_SWRST_Reset ((u16)0x7FFF) | |
/* I2C PEC mask */ | |
#define CR1_PEC_Set ((u16)0x1000) | |
/* I2C ENPEC mask */ | |
#define CR1_ENPEC_Set ((u16)0x0020) | |
#define CR1_ENPEC_Reset ((u16)0xFFDF) | |
/* I2C ENARP mask */ | |
#define CR1_ENARP_Set ((u16)0x0010) | |
#define CR1_ENARP_Reset ((u16)0xFFEF) | |
/* I2C NOSTRETCH mask */ | |
#define CR1_NOSTRETCH_Set ((u16)0x0080) | |
#define CR1_NOSTRETCH_Reset ((u16)0xFF7F) | |
/* I2C ENDUAL mask */ | |
#define OAR2_ENDUAL_Set ((u16)0x0001) | |
#define OAR2_ENDUAL_Reset ((u16)0xFFFE) | |
/* I2C F/S mask */ | |
#define CCR_FS_Set ((u16)0x8000) | |
/* I2C ADD2 mask */ | |
#define OAR2_ADD2_Reset ((u16)0xFF01) | |
/* I2C FREQ mask */ | |
#define CR2_FREQ_Reset ((u16)0xFFC0) | |
/* I2C CCR mask */ | |
#define CCR_CCR_Set ((u16)0x0FFF) | |
/* I2C FLAG mask */ | |
#define I2C_FLAG_Mask ((u32)0x00FFFFFF) | |
/* I2C registers Masks */ | |
#define CR1_CLEAR_Mask ((u16)0xFBF5) | |
/* Private macro -------------------------------------------------------------*/ | |
/* Private variables ---------------------------------------------------------*/ | |
/* Private function prototypes -----------------------------------------------*/ | |
/* Private functions ---------------------------------------------------------*/ | |
/******************************************************************************* | |
* Function Name : I2C_DeInit | |
* Description : Deinitializes the I2Cx peripheral registers to their default | |
* reset values. | |
* Input : - I2Cx: where x can be 1 or 2 to select the I2C peripheral. | |
* Output : None | |
* Return : None | |
*******************************************************************************/ | |
void I2C_DeInit(I2C_TypeDef* I2Cx) | |
{ | |
switch (*(u32*)&I2Cx) | |
{ | |
case I2C1_BASE: | |
/* Enable I2C1 reset state */ | |
RCC_APB1PeriphResetCmd(RCC_APB1Periph_I2C1, ENABLE); | |
/* Release I2C1 from reset state */ | |
RCC_APB1PeriphResetCmd(RCC_APB1Periph_I2C1, DISABLE); | |
break; | |
case I2C2_BASE: | |
/* Enable I2C2 reset state */ | |
RCC_APB1PeriphResetCmd(RCC_APB1Periph_I2C2, ENABLE); | |
/* Release I2C2 from reset state */ | |
RCC_APB1PeriphResetCmd(RCC_APB1Periph_I2C2, DISABLE); | |
break; | |
default: | |
break; | |
} | |
} | |
/******************************************************************************* | |
* Function Name : I2C_Init | |
* Description : Initializes the I2Cx according to the specified parameters | |
* in the I2C_InitStruct. | |
* Input : - I2Cx: where x can be 1 or 2 to select the I2C peripheral. | |
* - I2C_InitStruct: pointer to a I2C_InitTypeDef structure that | |
* contains the configuration information for the specified | |
* I2C peripheral. | |
* Output : None | |
* Return : None | |
******************************************************************************/ | |
void I2C_Init(I2C_TypeDef* I2Cx, I2C_InitTypeDef* I2C_InitStruct) | |
{ | |
u16 tmpreg = 0, freqrange = 0; | |
u16 result = 0x04; | |
u32 pclk1clock = 12000000; | |
RCC_ClocksTypeDef RCC_Clocks; | |
/* Check the parameters */ | |
assert(IS_I2C_MODE(I2C_InitStruct->I2C_Mode)); | |
assert(IS_I2C_DUTY_CYCLE(I2C_InitStruct->I2C_DutyCycle)); | |
assert(IS_I2C_OWN_ADDRESS1(I2C_InitStruct->I2C_OwnAddress1)); | |
assert(IS_I2C_ACK_STATE(I2C_InitStruct->I2C_Ack)); | |
assert(IS_I2C_ACKNOWLEDGE_ADDRESS(I2C_InitStruct->I2C_AcknowledgedAddress)); | |
assert(IS_I2C_CLOCK_SPEED(I2C_InitStruct->I2C_ClockSpeed)); | |
/*---------------------------- I2Cx CR2 Configuration ------------------------*/ | |
/* Get the I2Cx CR2 value */ | |
tmpreg = I2Cx->CR2; | |
/* Clear frequency FREQ[5:0] bits */ | |
tmpreg &= CR2_FREQ_Reset; | |
/* Get PCLK1Clock frequency value */ | |
RCC_GetClocksFreq(&RCC_Clocks); | |
pclk1clock = RCC_Clocks.PCLK1_Frequency; | |
/* Set frequency bits depending on PCLK1Clock value */ | |
freqrange = (u16)(pclk1clock / 1000000); | |
tmpreg |= freqrange; | |
/* Write to I2Cx CR2 */ | |
I2Cx->CR2 = tmpreg; | |
/*---------------------------- I2Cx CCR Configuration ------------------------*/ | |
/* Disable I2Cx to configure TRISE */ | |
I2C_Cmd(I2Cx, DISABLE); | |
/* Reset tmpreg value */ | |
/* Clear F/S, DUTY and CCR[11:0] bits */ | |
tmpreg = 0; | |
/* Configure speed in standard mode */ | |
if (I2C_InitStruct->I2C_ClockSpeed <= 100000) | |
{ | |
/* Standard mode speed calculate */ | |
result = (u16)(pclk1clock / (I2C_InitStruct->I2C_ClockSpeed << 1)); | |
/* Test if CCR value is under 0x4*/ | |
if (result < 0x04) | |
{ | |
/* Set minimum allowed value */ | |
result = 0x04; | |
} | |
/* Set speed value for standard mode */ | |
tmpreg |= result; | |
/* Set Maximum Rise Time: ((1000/(1000000000/pclk1clock))+1 */ | |
I2Cx->TRISE = freqrange + 1; | |
} | |
/* Configure speed in fast mode */ | |
else /*(I2C_InitStruct->I2C_ClockSpeed <= 400000)*/ | |
{ | |
if (I2C_InitStruct->I2C_DutyCycle == I2C_DutyCycle_2) | |
{ | |
/* Fast mode speed calculate: Tlow/Thigh = 2 */ | |
result = (u16)(pclk1clock / (I2C_InitStruct->I2C_ClockSpeed * 3)); | |
} | |
else /*I2C_InitStruct->I2C_DutyCycle == I2C_DutyCycle_16_9*/ | |
{ | |
/* Fast mode speed calculate: Tlow/Thigh = 16/9 */ | |
result = (u16)(pclk1clock / (I2C_InitStruct->I2C_ClockSpeed * 25)); | |
/* Set DUTY bit */ | |
result |= I2C_DutyCycle_16_9; | |
} | |
/* Test if CCR value is under 0x1*/ | |
if ((result & CCR_CCR_Set) == 0) | |
{ | |
/* Set minimum allowed value */ | |
result |= (u16)0x0001; | |
} | |
/* Set speed value and set F/S bit for fast mode */ | |
tmpreg |= result | CCR_FS_Set; | |
/* Set Maximum Rise Time: ((300/(1000000000/pclk1clock))+1 */ | |
I2Cx->TRISE = (u16)(((freqrange * 300) / 1000) + 1); | |
} | |
/* Write to I2Cx CCR */ | |
I2Cx->CCR = tmpreg; | |
/* Enable I2Cx */ | |
I2C_Cmd(I2Cx, ENABLE); | |
/*---------------------------- I2Cx CR1 Configuration ------------------------*/ | |
/* Get the I2Cx CR1 value */ | |
tmpreg = I2Cx->CR1; | |
/* Clear ACK, SMBTYPE and SMBUS bits */ | |
tmpreg &= CR1_CLEAR_Mask; | |
/* Configure I2Cx: mode and acknowledgement */ | |
/* Set SMBTYPE and SMBUS bits according to I2C_Mode value */ | |
/* Set ACK bit according to I2C_Ack value */ | |
tmpreg |= (u16)((u32)I2C_InitStruct->I2C_Mode | I2C_InitStruct->I2C_Ack); | |
/* Write to I2Cx CR1 */ | |
I2Cx->CR1 = tmpreg; | |
/*---------------------------- I2Cx OAR1 Configuration -----------------------*/ | |
/* Set I2Cx Own Address1 and acknowledged address */ | |
I2Cx->OAR1 = (I2C_InitStruct->I2C_AcknowledgedAddress | I2C_InitStruct->I2C_OwnAddress1); | |
} | |
/******************************************************************************* | |
* Function Name : I2C_StructInit | |
* Description : Fills each I2C_InitStruct member with its default value. | |
* Input : - I2C_InitStruct: pointer to a I2C_InitTypeDef structure | |
* which will be initialized. | |
* Output : None | |
* Return : None | |
*******************************************************************************/ | |
void I2C_StructInit(I2C_InitTypeDef* I2C_InitStruct) | |
{ | |
/*---------------- Reset I2C init structure parameters values ----------------*/ | |
/* Initialize the I2C_Mode member */ | |
I2C_InitStruct->I2C_Mode = I2C_Mode_I2C; | |
/* Initialize the I2C_DutyCycle member */ | |
I2C_InitStruct->I2C_DutyCycle = I2C_DutyCycle_2; | |
/* Initialize the I2C_OwnAddress1 member */ | |
I2C_InitStruct->I2C_OwnAddress1 = 0; | |
/* Initialize the I2C_Ack member */ | |
I2C_InitStruct->I2C_Ack = I2C_Ack_Disable; | |
/* Initialize the I2C_AcknowledgedAddress member */ | |
I2C_InitStruct->I2C_AcknowledgedAddress = I2C_AcknowledgedAddress_7bit; | |
/* initialize the I2C_ClockSpeed member */ | |
I2C_InitStruct->I2C_ClockSpeed = 5000; | |
} | |
/******************************************************************************* | |
* Function Name : I2C_Cmd | |
* Description : Enables or disables the specified I2C peripheral. | |
* Input : - I2Cx: where x can be 1 or 2 to select the I2C peripheral. | |
* - NewState: new state of the I2Cx peripheral. This parameter | |
* can be: ENABLE or DISABLE. | |
* Output : None | |
* Return : None | |
*******************************************************************************/ | |
void I2C_Cmd(I2C_TypeDef* I2Cx, FunctionalState NewState) | |
{ | |
/* Check the parameters */ | |
assert(IS_FUNCTIONAL_STATE(NewState)); | |
if (NewState != DISABLE) | |
{ | |
/* Enable the selected I2C peripheral */ | |
I2Cx->CR1 |= CR1_PE_Set; | |
} | |
else | |
{ | |
/* Disable the selected I2C peripheral */ | |
I2Cx->CR1 &= CR1_PE_Reset; | |
} | |
} | |
/******************************************************************************* | |
* Function Name : I2C_DMACmd | |
* Description : Enables or disables the specified I2C DMA requests. | |
* Input : - I2Cx: where x can be 1 or 2 to select the I2C peripheral. | |
* - NewState: new state of the I2C DMA transfer. | |
* This parameter can be: ENABLE or DISABLE. | |
* Output : None | |
* Return : None | |
*******************************************************************************/ | |
void I2C_DMACmd(I2C_TypeDef* I2Cx, FunctionalState NewState) | |
{ | |
/* Check the parameters */ | |
assert(IS_FUNCTIONAL_STATE(NewState)); | |
if (NewState != DISABLE) | |
{ | |
/* Enable the selected I2C DMA requests */ | |
I2Cx->CR2 |= CR2_DMAEN_Set; | |
} | |
else | |
{ | |
/* Disable the selected I2C DMA requests */ | |
I2Cx->CR2 &= CR2_DMAEN_Reset; | |
} | |
} | |
/******************************************************************************* | |
* Function Name : I2C_DMALastTransferCmd | |
* Description : Specifies that the next DMA transfer is the last one. | |
* Input : - I2Cx: where x can be 1 or 2 to select the I2C peripheral. | |
* - NewState: new state of the I2C DMA last transfer. | |
* This parameter can be: ENABLE or DISABLE. | |
* Output : None | |
* Return : None | |
*******************************************************************************/ | |
void I2C_DMALastTransferCmd(I2C_TypeDef* I2Cx, FunctionalState NewState) | |
{ | |
/* Check the parameters */ | |
assert(IS_FUNCTIONAL_STATE(NewState)); | |
if (NewState != DISABLE) | |
{ | |
/* Next DMA end of transfer is the last transfer */ | |
I2Cx->CR2 |= CR2_LAST_Set; | |
} | |
else | |
{ | |
/* Next DMA end of transfer is not the last transfer */ | |
I2Cx->CR2 &= CR2_LAST_Reset; | |
} | |
} | |
/******************************************************************************* | |
* Function Name : I2C_GenerateSTART | |
* Description : Generates I2Cx communication START condition. | |
* Input : - I2Cx: where x can be 1 or 2 to select the I2C peripheral. | |
* - NewState: new state of the I2C START condition generation. | |
* This parameter can be: ENABLE or DISABLE. | |
* Output : None | |
* Return : None. | |
*******************************************************************************/ | |
void I2C_GenerateSTART(I2C_TypeDef* I2Cx, FunctionalState NewState) | |
{ | |
/* Check the parameters */ | |
assert(IS_FUNCTIONAL_STATE(NewState)); | |
if (NewState != DISABLE) | |
{ | |
/* Generate a START condition */ | |
I2Cx->CR1 |= CR1_START_Set; | |
} | |
else | |
{ | |
/* Disable the START condition generation */ | |
I2Cx->CR1 &= CR1_START_Reset; | |
} | |
} | |
/******************************************************************************* | |
* Function Name : I2C_GenerateSTOP | |
* Description : Generates I2Cx communication STOP condition. | |
* Input : - I2Cx: where x can be 1 or 2 to select the I2C peripheral. | |
* - NewState: new state of the I2C STOP condition generation. | |
* This parameter can be: ENABLE or DISABLE. | |
* Output : None | |
* Return : None. | |
*******************************************************************************/ | |
void I2C_GenerateSTOP(I2C_TypeDef* I2Cx, FunctionalState NewState) | |
{ | |
/* Check the parameters */ | |
assert(IS_FUNCTIONAL_STATE(NewState)); | |
if (NewState != DISABLE) | |
{ | |
/* Generate a STOP condition */ | |
I2Cx->CR1 |= CR1_STOP_Set; | |
} | |
else | |
{ | |
/* Disable the STOP condition generation */ | |
I2Cx->CR1 &= CR1_STOP_Reset; | |
} | |
} | |
/******************************************************************************* | |
* Function Name : I2C_AcknowledgeConfig | |
* Description : Enables or disables the specified I2C acknowledge feature. | |
* Input : - I2Cx: where x can be 1 or 2 to select the I2C peripheral. | |
* - NewState: new state of the I2C Acknowledgement. | |
* This parameter can be: ENABLE or DISABLE. | |
* Output : None | |
* Return : None. | |
*******************************************************************************/ | |
void I2C_AcknowledgeConfig(I2C_TypeDef* I2Cx, FunctionalState NewState) | |
{ | |
/* Check the parameters */ | |
assert(IS_FUNCTIONAL_STATE(NewState)); | |
if (NewState != DISABLE) | |
{ | |
/* Enable the acknowledgement */ | |
I2Cx->CR1 |= CR1_ACK_Set; | |
} | |
else | |
{ | |
/* Disable the acknowledgement */ | |
I2Cx->CR1 &= CR1_ACK_Reset; | |
} | |
} | |
/******************************************************************************* | |
* Function Name : I2C_OwnAddress2Config | |
* Description : Configures the specified I2C own address2. | |
* Input : - I2Cx: where x can be 1 or 2 to select the I2C peripheral. | |
* - Address: specifies the 7bit I2C own address2. | |
* Output : None | |
* Return : None. | |
*******************************************************************************/ | |
void I2C_OwnAddress2Config(I2C_TypeDef* I2Cx, u8 Address) | |
{ | |
u16 tmpreg = 0; | |
/* Get the old register value */ | |
tmpreg = I2Cx->OAR2; | |
/* Reset I2Cx Own address2 bit [7:1] */ | |
tmpreg &= OAR2_ADD2_Reset; | |
/* Set I2Cx Own address2 */ | |
tmpreg |= (u16)(Address & (u16)0x00FE); | |
/* Store the new register value */ | |
I2Cx->OAR2 = tmpreg; | |
} | |
/******************************************************************************* | |
* Function Name : I2C_DualAddressCmd | |
* Description : Enables or disables the specified I2C dual addressing mode. | |
* Input : - I2Cx: where x can be 1 or 2 to select the I2C peripheral. | |
* - NewState: new state of the I2C dual addressing mode. | |
* This parameter can be: ENABLE or DISABLE. | |
* Output : None | |
* Return : None | |
*******************************************************************************/ | |
void I2C_DualAddressCmd(I2C_TypeDef* I2Cx, FunctionalState NewState) | |
{ | |
/* Check the parameters */ | |
assert(IS_FUNCTIONAL_STATE(NewState)); | |
if (NewState != DISABLE) | |
{ | |
/* Enable dual addressing mode */ | |
I2Cx->OAR2 |= OAR2_ENDUAL_Set; | |
} | |
else | |
{ | |
/* Disable dual addressing mode */ | |
I2Cx->OAR2 &= OAR2_ENDUAL_Reset; | |
} | |
} | |
/******************************************************************************* | |
* Function Name : I2C_GeneralCallCmd | |
* Description : Enables or disables the specified I2C general call feature. | |
* Input : - I2Cx: where x can be 1 or 2 to select the I2C peripheral. | |
* - NewState: new state of the I2C General call. | |
* This parameter can be: ENABLE or DISABLE. | |
* Output : None | |
* Return : None | |
*******************************************************************************/ | |
void I2C_GeneralCallCmd(I2C_TypeDef* I2Cx, FunctionalState NewState) | |
{ | |
/* Check the parameters */ | |
assert(IS_FUNCTIONAL_STATE(NewState)); | |
if (NewState != DISABLE) | |
{ | |
/* Enable generall call */ | |
I2Cx->CR1 |= CR1_ENGC_Set; | |
} | |
else | |
{ | |
/* Disable generall call */ | |
I2Cx->CR1 &= CR1_ENGC_Reset; | |
} | |
} | |
/******************************************************************************* | |
* Function Name : I2C_ITConfig | |
* Description : Enables or disables the specified I2C interrupts. | |
* Input : - I2Cx: where x can be 1 or 2 to select the I2C peripheral. | |
* - I2C_IT: specifies the I2C interrupts sources to be enabled | |
* or disabled. | |
* This parameter can be any combination of the following values: | |
* - I2C_IT_BUF: Buffer interrupt mask | |
* - I2C_IT_EVT: Event interrupt mask | |
* - I2C_IT_ERR: Error interrupt mask | |
* - NewState: new state of the specified I2C interrupts. | |
* This parameter can be: ENABLE or DISABLE. | |
* Output : None | |
* Return : None | |
*******************************************************************************/ | |
void I2C_ITConfig(I2C_TypeDef* I2Cx, u16 I2C_IT, FunctionalState NewState) | |
{ | |
/* Check the parameters */ | |
assert(IS_FUNCTIONAL_STATE(NewState)); | |
assert(IS_I2C_CONFIG_IT(I2C_IT)); | |
if (NewState != DISABLE) | |
{ | |
/* Enable the selected I2C interrupts */ | |
I2Cx->CR2 |= I2C_IT; | |
} | |
else | |
{ | |
/* Disable the selected I2C interrupts */ | |
I2Cx->CR2 &= (u16)~I2C_IT; | |
} | |
} | |
/******************************************************************************* | |
* Function Name : I2C_SendData | |
* Description : Sends a data byte through the I2Cx peripheral. | |
* Input : - I2Cx: where x can be 1 or 2 to select the I2C peripheral. | |
* - Data: Byte to be transmitted.. | |
* Output : None | |
* Return : None | |
*******************************************************************************/ | |
void I2C_SendData(I2C_TypeDef* I2Cx, u8 Data) | |
{ | |
/* Write in the DR register the data to be sent */ | |
I2Cx->DR = Data; | |
} | |
/******************************************************************************* | |
* Function Name : I2C_ReceiveData | |
* Description : Returns the most recent received data by the I2Cx peripheral. | |
* Input : - I2Cx: where x can be 1 or 2 to select the I2C peripheral. | |
* Output : None | |
* Return : The value of the received data. | |
*******************************************************************************/ | |
u8 I2C_ReceiveData(I2C_TypeDef* I2Cx) | |
{ | |
/* Return the data in the DR register */ | |
return (u8)I2Cx->DR; | |
} | |
/******************************************************************************* | |
* Function Name : I2C_Send7bitAddress | |
* Description : Transmits the address byte to select the slave device. | |
* Input : - I2Cx: where x can be 1 or 2 to select the I2C peripheral. | |
* - Address: specifies the slave address which will be transmitted | |
* - Direction: specifies whether the I2C device will be a | |
* Transmitter or a Receiver. | |
* This parameter can be one of the following values | |
* - I2C_Direction_Transmitter: Transmitter mode | |
* - I2C_Direction_Receiver: Receiver mode | |
* Output : None | |
* Return : None. | |
*******************************************************************************/ | |
void I2C_Send7bitAddress(I2C_TypeDef* I2Cx, u8 Address, u8 I2C_Direction) | |
{ | |
/* Check the parameters */ | |
assert(IS_I2C_DIRECTION(I2C_Direction)); | |
/* Test on the direction to set/reset the read/write bit */ | |
if (I2C_Direction != I2C_Direction_Transmitter) | |
{ | |
/* Set the address ADD0 bit0 for read */ | |
Address |= OAR1_ADD0_Set; | |
} | |
else | |
{ | |
/* Reset the address bit0 for write */ | |
Address &= OAR1_ADD0_Reset; | |
} | |
/* Send the address */ | |
I2Cx->DR = Address; | |
} | |
/******************************************************************************* | |
* Function Name : I2C_ReadRegister | |
* Description : Reads the specified I2C register and returns its value. | |
* Input1 : - I2C_Register: specifies the register to read. | |
* This parameter can be one of the following values: | |
* - I2C_Register_CR1: CR1 register. | |
* - I2C_Register_CR2: CR2 register. | |
* - I2C_Register_OAR1: OAR1 register. | |
* - I2C_Register_OAR2: OAR2 register. | |
* - I2C_Register_DR: DR register. | |
* - I2C_Register_SR1: SR1 register. | |
* - I2C_Register_SR2: SR2 register. | |
* - I2C_Register_CCR: CCR register. | |
* - I2C_Register_TRISE: TRISE register. | |
* Output : None | |
* Return : The value of the read register. | |
*******************************************************************************/ | |
u16 I2C_ReadRegister(I2C_TypeDef* I2Cx, u8 I2C_Register) | |
{ | |
/* Check the parameters */ | |
assert(IS_I2C_REGISTER(I2C_Register)); | |
/* Return the selected register value */ | |
return (*(u16 *)(*((u32 *)&I2Cx) + I2C_Register)); | |
} | |
/******************************************************************************* | |
* Function Name : I2C_SoftwareResetCmd | |
* Description : Enables or disables the specified I2C software reset. | |
* Input : - I2Cx: where x can be 1 or 2 to select the I2C peripheral. | |
* - NewState: new state of the I2C software reset. | |
* This parameter can be: ENABLE or DISABLE. | |
* Output : None | |
* Return : None | |
*******************************************************************************/ | |
void I2C_SoftwareResetCmd(I2C_TypeDef* I2Cx, FunctionalState NewState) | |
{ | |
/* Check the parameters */ | |
assert(IS_FUNCTIONAL_STATE(NewState)); | |
if (NewState != DISABLE) | |
{ | |
/* Peripheral under reset */ | |
I2Cx->CR1 |= CR1_SWRST_Set; | |
} | |
else | |
{ | |
/* Peripheral not under reset */ | |
I2Cx->CR1 &= CR1_SWRST_Reset; | |
} | |
} | |
/******************************************************************************* | |
* Function Name : I2C_SMBusAlertConfig | |
* Description : Drives the SMBusAlert pin high or low for the specified I2C. | |
* Input : - I2Cx: where x can be 1 or 2 to select the I2C peripheral. | |
* - I2C_SMBusAlert: specifies SMBAlert pin level. | |
* This parameter can be one of the following values: | |
* - I2C_SMBusAlert_Low: SMBAlert pin driven low | |
* - I2C_SMBusAlert_High: SMBAlert pin driven high | |
* Output : None | |
* Return : None | |
*******************************************************************************/ | |
void I2C_SMBusAlertConfig(I2C_TypeDef* I2Cx, u16 I2C_SMBusAlert) | |
{ | |
/* Check the parameters */ | |
assert(IS_I2C_SMBUS_ALERT(I2C_SMBusAlert)); | |
if (I2C_SMBusAlert == I2C_SMBusAlert_Low) | |
{ | |
/* Drive the SMBusAlert pin Low */ | |
I2Cx->CR1 |= I2C_SMBusAlert_Low; | |
} | |
else | |
{ | |
/* Drive the SMBusAlert pin High */ | |
I2Cx->CR1 &= I2C_SMBusAlert_High; | |
} | |
} | |
/******************************************************************************* | |
* Function Name : I2C_TransmitPEC | |
* Description : Enables the specified I2C PEC transfer. | |
* Input : - I2Cx: where x can be 1 or 2 to select the I2C peripheral. | |
* Output : None | |
* Return : None | |
*******************************************************************************/ | |
void I2C_TransmitPEC(I2C_TypeDef* I2Cx) | |
{ | |
/* Enable the selected I2C PEC transmission */ | |
I2Cx->CR1 |= CR1_PEC_Set; | |
} | |
/******************************************************************************* | |
* Function Name : I2C_PECPositionConfig | |
* Description : Selects the specified I2C PEC position. | |
* Input : - I2Cx: where x can be 1 or 2 to select the I2C peripheral. | |
* - I2C_PECPosition: specifies the PEC position. | |
* This parameter can be one of the following values: | |
* - I2C_PECPosition_Next: PEC bit indicates that current | |
* byte is PEC | |
* - I2C_PECPosition_Current: PEC bit indicates that the | |
* next byte is PEC | |
* Output : None | |
* Return : None | |
*******************************************************************************/ | |
void I2C_PECPositionConfig(I2C_TypeDef* I2Cx, u16 I2C_PECPosition) | |
{ | |
/* Check the parameters */ | |
assert(IS_I2C_PEC_POSITION(I2C_PECPosition)); | |
if (I2C_PECPosition == I2C_PECPosition_Next) | |
{ | |
/* PEC indicates that the next byte in shift register is PEC */ | |
I2Cx->CR1 |= I2C_PECPosition_Next; | |
} | |
else | |
{ | |
/* PEC indicates that the current byte in shift register is PEC */ | |
I2Cx->CR1 &= I2C_PECPosition_Current; | |
} | |
} | |
/******************************************************************************* | |
* Function Name : I2C_CalculatePEC | |
* Description : Enables or disables the PEC value calculation of the | |
* transfered bytes. | |
* Input : - I2Cx: where x can be 1 or 2 to select the I2C peripheral. | |
* - NewState: new state of the I2Cx PEC value calculation. | |
* This parameter can be: ENABLE or DISABLE. | |
* Output : None | |
* Return : None | |
*******************************************************************************/ | |
void I2C_CalculatePEC(I2C_TypeDef* I2Cx, FunctionalState NewState) | |
{ | |
/* Check the parameters */ | |
assert(IS_FUNCTIONAL_STATE(NewState)); | |
if (NewState != DISABLE) | |
{ | |
/* Enable the selected I2C PEC calculation */ | |
I2Cx->CR1 |= CR1_ENPEC_Set; | |
} | |
else | |
{ | |
/* Disable the selected I2C PEC calculation */ | |
I2Cx->CR1 &= CR1_ENPEC_Reset; | |
} | |
} | |
/******************************************************************************* | |
* Function Name : I2C_GetPEC | |
* Description : Returns the PEC value for the specified I2C. | |
* Input : - I2Cx: where x can be 1 or 2 to select the I2C peripheral. | |
* Output : None | |
* Return : The PEC value. | |
*******************************************************************************/ | |
u8 I2C_GetPEC(I2C_TypeDef* I2Cx) | |
{ | |
u8 pec; | |
/* Get the PEC value */ | |
pec = (I2Cx->SR2) >> 8; | |
/* Return the selected I2C PEC register value */ | |
return pec; | |
} | |
/******************************************************************************* | |
* Function Name : I2C_ARPCmd | |
* Description : Enables or disables the specified I2C ARP. | |
* Input : - I2Cx: where x can be 1 or 2 to select the I2C peripheral. | |
* - NewState: new state of the I2Cx ARP. | |
* This parameter can be: ENABLE or DISABLE. | |
* Output : None | |
* Return : None | |
*******************************************************************************/ | |
void I2C_ARPCmd(I2C_TypeDef* I2Cx, FunctionalState NewState) | |
{ | |
/* Check the parameters */ | |
assert(IS_FUNCTIONAL_STATE(NewState)); | |
if (NewState != DISABLE) | |
{ | |
/* Enable the selected I2C ARP */ | |
I2Cx->CR1 |= CR1_ENARP_Set; | |
} | |
else | |
{ | |
/* Disable the selected I2C ARP */ | |
I2Cx->CR1 &= CR1_ENARP_Reset; | |
} | |
} | |
/******************************************************************************* | |
* Function Name : I2C_StretchClockCmd | |
* Description : Enables or disables the specified I2C Clock stretching. | |
* Input : - I2Cx: where x can be 1 or 2 to select the I2C peripheral. | |
* - NewState: new state of the I2Cx Clock stretching. | |
* This parameter can be: ENABLE or DISABLE. | |
* Output : None | |
* Return : None | |
*******************************************************************************/ | |
void I2C_StretchClockCmd(I2C_TypeDef* I2Cx, FunctionalState NewState) | |
{ | |
/* Check the parameters */ | |
assert(IS_FUNCTIONAL_STATE(NewState)); | |
if (NewState == DISABLE) | |
{ | |
/* Enable the selected I2C Clock stretching */ | |
I2Cx->CR1 |= CR1_NOSTRETCH_Set; | |
} | |
else | |
{ | |
/* Disable the selected I2C Clock stretching */ | |
I2Cx->CR1 &= CR1_NOSTRETCH_Reset; | |
} | |
} | |
/******************************************************************************* | |
* Function Name : I2C_FastModeDutyCycleConfig | |
* Description : Selects the specified I2C fast mode duty cycle. | |
* Input : - I2Cx: where x can be 1 or 2 to select the I2C peripheral. | |
* - I2C_DutyCycle: specifies the fast mode duty cycle. | |
* This parameter can be one of the following values: | |
* - I2C_DutyCycle_2: I2C fast mode Tlow/Thigh = 2 | |
* - I2C_DutyCycle_16_9: I2C fast mode Tlow/Thigh = 16/9 | |
* Output : None | |
* Return : None | |
*******************************************************************************/ | |
void I2C_FastModeDutyCycleConfig(I2C_TypeDef* I2Cx, u16 I2C_DutyCycle) | |
{ | |
/* Check the parameters */ | |
assert(IS_I2C_DUTY_CYCLE(I2C_DutyCycle)); | |
if (I2C_DutyCycle != I2C_DutyCycle_16_9) | |
{ | |
/* I2C fast mode Tlow/Thigh=2 */ | |
I2Cx->CCR &= I2C_DutyCycle_2; | |
} | |
else | |
{ | |
/* I2C fast mode Tlow/Thigh=16/9 */ | |
I2Cx->CCR |= I2C_DutyCycle_16_9; | |
} | |
} | |
/******************************************************************************* | |
* Function Name : I2C_GetLastEvent | |
* Description : Returns the Last I2C Event. | |
* Input : - I2Cx: where x can be 1 or 2 to select the I2C peripheral. | |
* Output : None | |
* Return : The last event | |
*******************************************************************************/ | |
u32 I2C_GetLastEvent(I2C_TypeDef* I2Cx) | |
{ | |
u32 LastEvent = 0; | |
u32 Flag1 = 0, Flag2 = 0; | |
Flag1 = I2Cx->SR1; | |
Flag2 = I2Cx->SR2; | |
Flag2 = Flag2 << 16; | |
/* Get the last event value from I2C status register */ | |
LastEvent = (Flag1 | Flag2) & I2C_FLAG_Mask; | |
/* Return status */ | |
return LastEvent; | |
} | |
/******************************************************************************* | |
* Function Name : I2C_CheckEvent | |
* Description : Checks whether the Last I2C Event is equal to the one passed | |
* as parameter. | |
* Input : - I2Cx: where x can be 1 or 2 to select the I2C peripheral. | |
* - I2C_EVENT: specifies the event to be checked. | |
* This parameter can be one of the following values: | |
* - I2C_EVENT_SLAVE_ADDRESS_MATCHED : EV1 | |
* - I2C_EVENT_SLAVE_BYTE_RECEIVED : EV2 | |
* - I2C_EVENT_SLAVE_BYTE_TRANSMITTED : EV3 | |
* - I2C_EVENT_SLAVE_ACK_FAILURE : EV3-1 | |
* - I2C_EVENT_MASTER_MODE_SELECT : EV5 | |
* - I2C_EVENT_MASTER_MODE_SELECTED : EV6 | |
* - I2C_EVENT_MASTER_BYTE_RECEIVED : EV7 | |
* - I2C_EVENT_MASTER_BYTE_TRANSMITTED : EV8 | |
* - I2C_EVENT_MASTER_MODE_ADDRESS10 : EV9 | |
* - I2C_EVENT_SLAVE_STOP_DETECTED : EV4 | |
* Output : None | |
* Return : An ErrorStatus enumuration value: | |
* - SUCCESS: Last event is equal to the I2C_Event | |
* - ERROR: Last event is different from the I2C_Event | |
*******************************************************************************/ | |
ErrorStatus I2C_CheckEvent(I2C_TypeDef* I2Cx, u32 I2C_EVENT) | |
{ | |
u32 LastEvent = 0; | |
u32 Flag1 = 0, Flag2 = 0; | |
ErrorStatus status = ERROR; | |
/* Check the parameters */ | |
assert(IS_I2C_EVENT(I2C_EVENT)); | |
Flag1 = I2Cx->SR1; | |
Flag2 = I2Cx->SR2; | |
Flag2 = Flag2 << 16; | |
/* Get the last event value from I2C status register */ | |
LastEvent = (Flag1 | Flag2) & I2C_FLAG_Mask; | |
/* Check whether the last event is equal to I2C_EVENT */ | |
if (LastEvent == I2C_EVENT ) | |
{ | |
/* SUCCESS: last event is equal to I2C_EVENT */ | |
status = SUCCESS; | |
} | |
else | |
{ | |
/* ERROR: last event is different from I2C_EVENT */ | |
status = ERROR; | |
} | |
/* Return status */ | |
return status; | |
} | |
/******************************************************************************* | |
* Function Name : I2C_GetFlagStatus | |
* Description : Checks whether the specified I2C flag is set or not. | |
* Input : - I2Cx: where x can be 1 or 2 to select the I2C peripheral. | |
* - I2C_FLAG: specifies the flag to check. | |
* This parameter can be one of the following values: | |
* - I2C_FLAG_DUALF: Dual flag (Slave mode) | |
* - I2C_FLAG_SMBHOST: SMBus host header (Slave mode) | |
* - I2C_FLAG_SMBDEFAULT: SMBus default header (Slave mode) | |
* - I2C_FLAG_GENCALL: General call header flag (Slave mode) | |
* - I2C_FLAG_TRA: Transmitter/Receiver flag | |
* - I2C_FLAG_BUSY: Bus busy flag | |
* - I2C_FLAG_MSL: Master/Slave flag | |
* - I2C_FLAG_SMBALERT: SMBus Alert flag | |
* - I2C_FLAG_TIMEOUT: Timeout or Tlow error flag | |
* - I2C_FLAG_PECERR: PEC error in reception flag | |
* - I2C_FLAG_OVR: Overrun/Underrun flag (Slave mode) | |
* - I2C_FLAG_AF: Acknowledge failure flag | |
* - I2C_FLAG_ARLO: Arbitration lost flag (Master mode) | |
* - I2C_FLAG_BERR: Bus error flag | |
* - I2C_FLAG_TXE: Data register empty flag (Transmitter) | |
* - I2C_FLAG_RXNE: Data register not empty (Receiver) flag | |
* - I2C_FLAG_STOPF: Stop detection flag (Slave mode) | |
* - I2C_FLAG_ADD10: 10-bit header sent flag (Master mode) | |
* - I2C_FLAG_BTF: Byte transfer finished flag | |
* - I2C_FLAG_ADDR: Address sent flag (Master mode) ADSL | |
* Address matched flag (Slave mode)ENDAD | |
* - I2C_FLAG_SB: Start bit flag (Master mode) | |
* Output : None | |
* Return : The new state of I2C_FLAG (SET or RESET). | |
*******************************************************************************/ | |
FlagStatus I2C_GetFlagStatus(I2C_TypeDef* I2Cx, u32 I2C_FLAG) | |
{ | |
FlagStatus bitstatus = RESET; | |
u32 i2cstatus = 0; | |
u32 Flag1 = 0, Flag2 = 0; | |
/* Check the parameters */ | |
assert(IS_I2C_GET_FLAG(I2C_FLAG)); | |
/* Read the I2Cx status register */ | |
Flag1 = I2Cx->SR1; | |
Flag2 = I2Cx->SR2; | |
Flag2 = (Flag2 & I2C_FLAG_Mask) << 16; | |
/* Get the I2C status value */ | |
i2cstatus = Flag1 | Flag2; | |
/* Get bit[27:0] of the flag */ | |
I2C_FLAG &= I2C_FLAG_Mask; | |
/* Check the status of the specified I2C flag */ | |
if ((i2cstatus & I2C_FLAG) != (u32)RESET) | |
{ | |
/* I2C_FLAG is set */ | |
bitstatus = SET; | |
} | |
else | |
{ | |
/* I2C_FLAG is reset */ | |
bitstatus = RESET; | |
} | |
/* Return the I2C_FLAG status */ | |
return bitstatus; | |
} | |
/******************************************************************************* | |
* Function Name : I2C_ClearFlag | |
* Description : Clears the I2Cx's pending flags. | |
* Input : - I2Cx: where x can be 1 or 2 to select the I2C peripheral. | |
* - I2C_FLAG: specifies the flag to clear. | |
* This parameter can be one of the following values: | |
* - I2C_FLAG_SMBALERT: SMBus Alert flag | |
* - I2C_FLAG_TIMEOUT: Timeout or Tlow error flag | |
* - I2C_FLAG_PECERR: PEC error in reception flag | |
* - I2C_FLAG_OVR: Overrun/Underrun flag (Slave mode) | |
* - I2C_FLAG_AF: Acknowledge failure flag | |
* - I2C_FLAG_ARLO: Arbitration lost flag (Master mode) | |
* - I2C_FLAG_BERR: Bus error flag | |
* - I2C_FLAG_STOPF: Stop detection flag (Slave mode) | |
* - I2C_FLAG_ADD10: 10-bit header sent flag (Master mode) | |
* - I2C_FLAG_BTF: Byte transfer finished flag | |
* - I2C_FLAG_ADDR: Address sent flag (Master mode) ADSL | |
* Address matched flag (Slave mode)ENDAD | |
* - I2C_FLAG_SB: Start bit flag (Master mode) | |
* Output : None | |
* Return : None | |
*******************************************************************************/ | |
void I2C_ClearFlag(I2C_TypeDef* I2Cx, u32 I2C_FLAG) | |
{ | |
u32 flagpos = 0; | |
u8 flagindex = 0; | |
/* Check the parameters */ | |
assert(IS_I2C_CLEAR_FLAG(I2C_FLAG)); | |
/* Get the I2C flag position */ | |
flagpos = I2C_FLAG & I2C_FLAG_Mask; | |
/* Get the I2C flag index */ | |
flagindex = I2C_FLAG >> 28; | |
/* Clear the flag by writing 0 */ | |
if (flagindex == 1) | |
{ | |
/* Clear the selected I2C flag */ | |
I2Cx->SR1 &= ~flagpos; | |
} | |
/* Flags that need a read of the SR1 register to be cleared */ | |
else if (flagindex == 2) | |
{ | |
/* Read the SR1 register */ | |
(void)I2Cx->SR1; | |
} | |
/* Flags that need a read of SR1 and a write on CR2 registers to be cleared */ | |
else if (flagindex == 6) | |
{ | |
/* Read the SR1 register */ | |
(void)I2Cx->SR1; | |
/* Write on the CR1 register */ | |
I2Cx->CR1 |= CR1_PE_Set; | |
} | |
/* Flags that need a read of SR1 and a write on CR2 registers to be cleared */ | |
else /*flagindex == 0xA*/ | |
{ | |
/* Read the SR1 register */ | |
(void)I2Cx->SR1; | |
/* Read the SR2 register */ | |
(void)I2Cx->SR2; | |
} | |
} | |
/******************************************************************************* | |
* Function Name : I2C_GetITStatus | |
* Description : Checks whether the specified I2C interrupt has occurred or not. | |
* Input : - I2Cx: where x can be 1 or 2 to select the I2C peripheral. | |
* - I2C_IT: specifies the interrupt source to check. | |
* This parameter can be one of the following values: | |
* - I2C_IT_SMBALERT: SMBus Alert flag | |
* - I2C_IT_TIMEOUT: Timeout or Tlow error flag | |
* - I2C_IT_PECERR: PEC error in reception flag | |
* - I2C_IT_OVR: Overrun/Underrun flag (Slave mode) | |
* - I2C_IT_AF: Acknowledge failure flag | |
* - I2C_IT_ARLO: Arbitration lost flag (Master mode) | |
* - I2C_IT_BERR: Bus error flag | |
* - I2C_IT_TXE: Data register empty flag (Transmitter) | |
* - I2C_IT_RXNE: Data register not empty (Receiver) flag | |
* - I2C_IT_STOPF: Stop detection flag (Slave mode) | |
* - I2C_IT_ADD10: 10-bit header sent flag (Master mode) | |
* - I2C_IT_BTF: Byte transfer finished flag | |
* - I2C_IT_ADDR: Address sent flag (Master mode) ADSL | |
* Address matched flag (Slave mode)ENDAD | |
* - I2C_IT_SB: Start bit flag (Master mode) | |
* Output : None | |
* Return : The new state of I2C_IT (SET or RESET). | |
*******************************************************************************/ | |
ITStatus I2C_GetITStatus(I2C_TypeDef* I2Cx, u32 I2C_IT) | |
{ | |
ITStatus bitstatus = RESET; | |
u32 i2cstatus = 0; | |
u32 Flag1 = 0, Flag2 = 0; | |
/* Check the parameters */ | |
assert(IS_I2C_GET_IT(I2C_IT)); | |
/* Read the I2Cx status register */ | |
Flag1 = I2Cx->SR1; | |
Flag2 = I2Cx->SR2; | |
Flag2 = (Flag2 & I2C_FLAG_Mask) << 16; | |
/* Get the I2C status value */ | |
i2cstatus = Flag1 | Flag2; | |
/* Get bit[27:0] of the flag */ | |
I2C_IT &= I2C_FLAG_Mask; | |
/* Check the status of the specified I2C flag */ | |
if ((i2cstatus & I2C_IT) != (u32)RESET) | |
{ | |
/* I2C_IT is set */ | |
bitstatus = SET; | |
} | |
else | |
{ | |
/* I2C_IT is reset */ | |
bitstatus = RESET; | |
} | |
/* Return the I2C_IT status */ | |
return bitstatus; | |
} | |
/******************************************************************************* | |
* Function Name : I2C_ClearITPendingBit | |
* Description : Clears the I2Cxs interrupt pending bits. | |
* Input : - I2Cx: where x can be 1 or 2 to select the I2C peripheral. | |
* - I2C_IT: specifies the interrupt pending to clear. | |
* This parameter can be one of the following values: | |
* - I2C_IT_SMBALERT: SMBus Alert flag | |
* - I2C_IT_TIMEOUT: Timeout or Tlow error flag | |
* - I2C_IT_PECERR: PEC error in reception flag | |
* - I2C_IT_OVR: Overrun/Underrun flag (Slave mode) | |
* - I2C_IT_AF: Acknowledge failure flag | |
* - I2C_IT_ARLO: Arbitration lost flag (Master mode) | |
* - I2C_IT_BERR: Bus error flag | |
* - I2C_IT_STOPF: Stop detection flag (Slave mode) | |
* - I2C_IT_ADD10: 10-bit header sent flag (Master mode) | |
* - I2C_IT_BTF: Byte transfer finished flag | |
* - I2C_IT_ADDR: Address sent flag (Master mode) ADSL | |
* Address matched flag (Slave mode)ENDAD | |
* - I2C_IT_SB: Start bit flag (Master mode) | |
* Output : None | |
* Return : None | |
*******************************************************************************/ | |
void I2C_ClearITPendingBit(I2C_TypeDef* I2Cx, u32 I2C_IT) | |
{ | |
u32 flagpos = 0; | |
u8 flagindex = 0; | |
/* Check the parameters */ | |
assert(IS_I2C_CLEAR_IT(I2C_IT)); | |
/* Get the I2C flag position */ | |
flagpos = I2C_IT & I2C_FLAG_Mask; | |
/* Get the I2C flag index */ | |
flagindex = I2C_IT >> 28; | |
/* Clear the flag by writing 0 */ | |
if (flagindex == 1) | |
{ | |
/* Clear the selected I2C flag */ | |
I2Cx->SR1 &= ~flagpos; | |
} | |
/* Flags that need a read of the SR1 register to be cleared */ | |
else if (flagindex == 2) | |
{ | |
/* Read the SR1 register */ | |
(void)I2Cx->SR1; | |
} | |
/* Flags that need a read of SR1 and a write on CR2 registers to be cleared */ | |
else if (flagindex == 6) | |
{ | |
/* Read the SR1 register */ | |
(void)I2Cx->SR1; | |
/* Write on the CR1 register */ | |
I2Cx->CR1 |= CR1_PE_Set; | |
} | |
/* Flags that need a read of SR1 and a write on CR2 registers to be cleared */ | |
else /*flagindex == 0xA*/ | |
{ | |
/* Read the SR1 register */ | |
(void)I2Cx->SR1; | |
/* Read the SR2 register */ | |
(void)I2Cx->SR2; | |
} | |
} | |
/******************* (C) COPYRIGHT 2007 STMicroelectronics *****END OF FILE****/ |