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/******************** (C) COPYRIGHT 2008 STMicroelectronics ********************
* File Name : main.c
* Author : MCD Application Team
* Version : V2.0.1
* Date : 06/13/2008
* Description : Main program body
********************************************************************************
* 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.
*******************************************************************************/
/* Includes ------------------------------------------------------------------*/
#include "stm32f10x_lib.h"
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
#define I2C1_SLAVE_ADDRESS7 0x10
#define I2C2_SLAVE_ADDRESS7 0x30
#define SMBusDefaultHeader 0xC2
#define Command 0x01
#define ClockSpeed 20000
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
I2C_InitTypeDef I2C_InitStructure;
vu8 ReceivedCommand = 0, PECValue = 0;
volatile FlagStatus Status = RESET;
ErrorStatus HSEStartUpStatus;
/* Private functions ---------------------------------------------------------*/
void RCC_Configuration(void);
void GPIO_Configuration(void);
void NVIC_Configuration(void);
/*******************************************************************************
* Function Name : main
* Description : Main program
* Input : None
* Output : None
* Return : None
*******************************************************************************/
int main(void)
{
#ifdef DEBUG
debug();
#endif
/* System clocks configuration ---------------------------------------------*/
RCC_Configuration();
/* NVIC configuration ------------------------------------------------------*/
NVIC_Configuration();
/* GPIO configuration ------------------------------------------------------*/
GPIO_Configuration();
/* Enable I2C1 and I2C2 ----------------------------------------------------*/
I2C_Cmd(I2C1, ENABLE);
I2C_Cmd(I2C2, ENABLE);
/* I2C1 configuration: SMBus Host ------------------------------------------*/
I2C_InitStructure.I2C_Mode = I2C_Mode_SMBusHost;
I2C_InitStructure.I2C_DutyCycle = I2C_DutyCycle_2;
I2C_InitStructure.I2C_OwnAddress1 = I2C1_SLAVE_ADDRESS7;
I2C_InitStructure.I2C_Ack = I2C_Ack_Enable;
I2C_InitStructure.I2C_AcknowledgedAddress = I2C_AcknowledgedAddress_7bit;
I2C_InitStructure.I2C_ClockSpeed = ClockSpeed;
I2C_Init(I2C1, &I2C_InitStructure);
/* I2C2 configuration: SMBus Device ----------------------------------------*/
I2C_InitStructure.I2C_Mode = I2C_Mode_SMBusDevice;
I2C_InitStructure.I2C_OwnAddress1 = I2C2_SLAVE_ADDRESS7;
I2C_Init(I2C2, &I2C_InitStructure);
/* Enable I2C2 ARP */
I2C_ARPCmd(I2C2, ENABLE);
/* Enable I2C1 and I2C2 PEC Transmission */
I2C_CalculatePEC(I2C1, ENABLE);
I2C_CalculatePEC(I2C2, ENABLE);
/*----- Transmission Phase -----*/
/* Send I2C1 START condition */
I2C_GenerateSTART(I2C1, ENABLE);
/* Test on I2C1 EV5 and clear it */
while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_MODE_SELECT));
/* Send Slave address */
I2C_Send7bitAddress(I2C1, SMBusDefaultHeader, I2C_Direction_Transmitter);
/* Test on I2C1 EV6 and clear it */
while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_TRANSMITTER_MODE_SELECTED));
/* Get I2C2 SMBDEFAULT flag status */
Status = I2C_GetFlagStatus(I2C2, I2C_FLAG_SMBDEFAULT);
/* Send Command */
I2C_SendData(I2C1, Command);
/* Clear ADDR flag */
I2C_ClearFlag(I2C2, I2C_FLAG_ADDR);
/* Wait for I2C2 received data */
while(!I2C_GetFlagStatus(I2C2, I2C_FLAG_RXNE));
/* Store received data on I2C2 */
ReceivedCommand = I2C_ReceiveData(I2C2);
/* Test on I2C1 EV8 and clear it */
while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_BYTE_TRANSMITTED));
/* Enable Transfer PEC next for I2C1 and I2C2 */
I2C_TransmitPEC(I2C1, ENABLE);
I2C_TransmitPEC(I2C2, ENABLE);
/* Wait for I2C2 received data */
while(!I2C_GetFlagStatus(I2C2, I2C_FLAG_RXNE));
/* Store received PEC on I2C2 */
PECValue = I2C_ReceiveData(I2C2);
/* Test on I2C1 EV8 and clear it */
while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_BYTE_TRANSMITTED));
/* Send I2C1 STOP Condition */
I2C_GenerateSTOP(I2C1, ENABLE);
/* Test on I2C2 EV4 and clear it */
while(!I2C_CheckEvent(I2C2, I2C_EVENT_SLAVE_STOP_DETECTED));
/* Clear I2C2 STOPF flag */
I2C_ClearFlag(I2C2, I2C_FLAG_STOPF);
while (1)
{
}
}
/*******************************************************************************
* Function Name : RCC_Configuration
* Description : Configures the different system clocks.
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void RCC_Configuration(void)
{
/* RCC system reset(for debug purpose) */
RCC_DeInit();
/* Enable HSE */
RCC_HSEConfig(RCC_HSE_ON);
/* Wait till HSE is ready */
HSEStartUpStatus = RCC_WaitForHSEStartUp();
if(HSEStartUpStatus == SUCCESS)
{
/* Enable Prefetch Buffer */
FLASH_PrefetchBufferCmd(FLASH_PrefetchBuffer_Enable);
/* Flash 2 wait state */
FLASH_SetLatency(FLASH_Latency_2);
/* HCLK = SYSCLK */
RCC_HCLKConfig(RCC_SYSCLK_Div1);
/* PCLK2 = HCLK */
RCC_PCLK2Config(RCC_HCLK_Div1);
/* PCLK1 = HCLK/2 */
RCC_PCLK1Config(RCC_HCLK_Div2);
/* PLLCLK = 8MHz * 9 = 72 MHz */
RCC_PLLConfig(RCC_PLLSource_HSE_Div1, RCC_PLLMul_9);
/* Enable PLL */
RCC_PLLCmd(ENABLE);
/* Wait till PLL is ready */
while(RCC_GetFlagStatus(RCC_FLAG_PLLRDY) == RESET)
{
}
/* Select PLL as system clock source */
RCC_SYSCLKConfig(RCC_SYSCLKSource_PLLCLK);
/* Wait till PLL is used as system clock source */
while(RCC_GetSYSCLKSource() != 0x08)
{
}
}
/* Enable peripheral clocks --------------------------------------------------*/
/* GPIOB Periph clock enable */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE);
/* I2C1 and I2C2 Periph clock enable */
RCC_APB1PeriphClockCmd(RCC_APB1Periph_I2C1 | RCC_APB1Periph_I2C2, ENABLE);
}
/*******************************************************************************
* Function Name : GPIO_Configuration
* Description : Configures the different GPIO ports.
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void GPIO_Configuration(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
/* Configure I2C1 pins: SCL and SDA ----------------------------------------*/
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6 | GPIO_Pin_7;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_OD;
GPIO_Init(GPIOB, &GPIO_InitStructure);
/* Configure I2C2 pins: SCL and SDA ----------------------------------------*/
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10 | GPIO_Pin_11;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_OD;
GPIO_Init(GPIOB, &GPIO_InitStructure);
}
/*******************************************************************************
* Function Name : NVIC_Configuration
* Description : Configure the nested vectored interrupt controller.
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void NVIC_Configuration(void)
{
#ifdef VECT_TAB_RAM
/* Set the Vector Table base location at 0x20000000 */
NVIC_SetVectorTable(NVIC_VectTab_RAM, 0x0);
#else /* VECT_TAB_FLASH */
/* Set the Vector Table base location at 0x08000000 */
NVIC_SetVectorTable(NVIC_VectTab_FLASH, 0x0);
#endif
}
#ifdef DEBUG
/*******************************************************************************
* Function Name : assert_failed
* Description : Reports the name of the source file and the source line number
* where the assert_param error has occurred.
* Input : - file: pointer to the source file name
* - line: assert_param error line source number
* Output : None
* Return : None
*******************************************************************************/
void assert_failed(u8* file, u32 line)
{
/* User can add his own implementation to report the file name and line number,
ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
/* Infinite loop */
while (1)
{
}
}
#endif
/******************* (C) COPYRIGHT 2008 STMicroelectronics *****END OF FILE****/
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