I2C Interface

[bhavesh]

Posted on September 29, 2015 at 23:28

I Trying To I2C Interface With DS1621 Using HAL Driver STM32Cube-MX 4.7.0

As Per HAL Driver I Try To Check Device Is Ready or NOT It Stuck At if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_SB, RESET, Timeout) != HAL_OK)It Always Getting timeout error what is the role of 

I2C_FLAG_SB bit

&sharpdefine Slave_Address    0x90int main(void){  HAL_Init();  SystemClock_Config();  MX_GPIO_Init();  //MX_I2C1_Init();  while (1)  {    MX_I2C1_Init();    if(HAL_I2C_IsDeviceReady(&hi2c1, Slave_Address, 10, 1000) == HAL_OK); if(HAL_I2C_Master_Transmit(&hi2c1, Slave_Address, ''0xEE'', 1, 1000) == HAL_OK);    if(HAL_I2C_IsDeviceReady(&hi2c1, Slave_Address, 10, 1000) == HAL_OK); if(HAL_I2C_Master_Transmit(&hi2c1, Slave_Address, ''0xAA'', 1, 1000) == HAL_OK);    if(HAL_I2C_IsDeviceReady(&hi2c1, 0x91, 10, 1000) == HAL_OK);    if(HAL_I2C_Master_Receive(&hi2c1, 0x91, Temp, 2, 1000) == HAL_OK);  }}void MX_I2C1_Init(void){  hi2c1.Instance = I2C1;  hi2c1.Init.ClockSpeed = 100000;  hi2c1.Init.DutyCycle = I2C_DUTYCYCLE_2;  hi2c1.Init.OwnAddress1 = 64;  hi2c1.Init.AddressingMode = I2C_ADDRESSINGMODE_7BIT;  hi2c1.Init.DualAddressMode = I2C_DUALADDRESS_DISABLED;  hi2c1.Init.OwnAddress2 = 0;  hi2c1.Init.GeneralCallMode = I2C_GENERALCALL_ENABLED;  hi2c1.Init.NoStretchMode = I2C_NOSTRETCH_DISABLED;  HAL_I2C_Init(&hi2c1);}i used 1k resistor for pull-up what is the flow to use this driver please suggest me for initialization of I2C interfacealso suggest for tool where i can show signal activity #stm32f4-i2c-hal-driver #i2c-stm32

[bhavesh]

Posted on October 01, 2015 at 07:31

here is Standard Peripheral Used But still no data received please help me what thing i missed

#include ''main.h''uint32_t  DS1621Timeout = DS1621_LONG_TIMEOUT;uint8_t DS1621_BufferRX[2] ={0,0};uint16_t tmp = 0, Add = 0;uint32_t DataNum = 0;uint16_t tempature = 0;void Delay(volatile int i){  for(volatile int y = 0; y <= 600; y++)  {    for(volatile int z = i; z<=100; z++);  }}  static void data_read(uint8_t DS1621_Add){  I2C_AcknowledgeConfig(DS1621_I2C, ENABLE);  if((I2C_GetFlagStatus(DS1621_I2C, I2C_FLAG_RXNE)) == SET)  {    DS1621_BufferRX[0] = I2C_ReceiveData(DS1621_I2C);  }  I2C_AcknowledgeConfig(DS1621_I2C, DISABLE);  I2C_GenerateSTOP(DS1621_I2C, ENABLE);  if((I2C_GetFlagStatus(DS1621_I2C, I2C_FLAG_RXNE)) == SET)  {    DS1621_BufferRX[1] = I2C_ReceiveData(DS1621_I2C);  } }static uint8_t data_write(uint8_t data){  I2C_SendData(DS1621_I2C, data);  while((I2C_GetFlagStatus(DS1621_I2C, I2C_FLAG_TC)) == SET);  return SUCCESS;}int main(void){  DS1621_Init();  DS1621_LowLevel_Init();  while (1)  {    if(DS1621_GetStatus() == SUCCESS)    {      Basic_Configuration(1, I2C_Direction_Transmitter);      data_write(0xEE);      data_write(0xAA);      I2C_stop(I2C1);    }    if(DS1621_GetStatus() == SUCCESS)    {      Basic_Configuration(2, I2C_Direction_Receiver);      data_read(DS1621_ADDR_R);      I2C_stop(I2C1);    }  }}void DS1621_Init(void){    I2C_InitTypeDef  I2C_InitStructure;    I2C_DeInit(I2C1);  I2C_SoftwareResetCmd(I2C1);  /* DS1621_I2C configuration */  I2C_InitStructure.I2C_Mode = I2C_Mode_I2C;  I2C_InitStructure.I2C_AnalogFilter = I2C_AnalogFilter_Disable;  I2C_InitStructure.I2C_DigitalFilter = 0x00;  I2C_InitStructure.I2C_OwnAddress1 = 0x90;  I2C_InitStructure.I2C_Ack = I2C_Ack_Disable;  I2C_InitStructure.I2C_AcknowledgedAddress = I2C_AcknowledgedAddress_7bit;  I2C_InitStructure.I2C_Timing = 1000;//0x1045061D;    /* Apply DS1621_I2C configuration after enabling it */  I2C_Init(DS1621_I2C, &I2C_InitStructure);    /* DS1621_I2C Peripheral Enable */  I2C_Cmd(DS1621_I2C, ENABLE);}ErrorStatus DS1621_GetStatus(void){  uint32_t I2C_TimeOut = I2C_TIMEOUT;  while(I2C_GetFlagStatus(DS1621_I2C, I2C_FLAG_BUSY));  /* Generate start */  I2C_GenerateSTART(DS1621_I2C, ENABLE);      /* Wait until timeout elapsed */  while ((I2C_GetFlagStatus(DS1621_I2C, I2C_FLAG_BUSY) == SET) && (I2C_TimeOut-- != 0));     /* Check if Temp sensor is ready for use */  if ((I2C_GetFlagStatus(DS1621_I2C, I2C_ISR_NACKF) == RESET) || (I2C_TimeOut == 0))  {          /* Clear NACKF and STOPF */    I2C_ClearFlag(DS1621_I2C, I2C_ICR_NACKCF | I2C_ICR_STOPCF);        return ERROR;  }  else  {    /* Clear STOPF */    I2C_ClearFlag(DS1621_I2C, I2C_ICR_STOPCF);        return SUCCESS;  }    }void DS1621_LowLevel_Init(void){  GPIO_InitTypeDef  GPIO_InitStructure;  /* DS1621_I2C Periph clock enable */  RCC_APB1PeriphClockCmd(DS1621_I2C_CLK, ENABLE);      /* Configure the I2C clock source. The clock is derived from the HSI */  RCC_I2CCLKConfig(RCC_I2C1CLK_HSI);  RCC_AHBPeriphClockCmd(DS1621_I2C_SCL_GPIO_CLK | DS1621_I2C_SDA_GPIO_CLK, ENABLE);    /* Connect PXx to I2C_SCL */  GPIO_PinAFConfig(DS1621_I2C_SCL_GPIO_PORT, DS1621_I2C_SCL_SOURCE, DS1621_I2C_SCL_AF);  /* Connect PXx to I2C_SDA */  GPIO_PinAFConfig(DS1621_I2C_SDA_GPIO_PORT, DS1621_I2C_SDA_SOURCE, DS1621_I2C_SDA_AF);       /* Configure DS1621_I2C pins: SCL */  GPIO_InitStructure.GPIO_Pin = DS1621_I2C_SCL_PIN;  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_2MHz;  GPIO_InitStructure.GPIO_OType = GPIO_OType_OD;  GPIO_InitStructure.GPIO_PuPd  = GPIO_PuPd_UP;  GPIO_Init(DS1621_I2C_SCL_GPIO_PORT, &GPIO_InitStructure);  /* Configure DS1621_I2C pins: SDA */  GPIO_InitStructure.GPIO_Pin = DS1621_I2C_SDA_PIN;  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_2MHz;  GPIO_InitStructure.GPIO_OType = GPIO_OType_OD;  GPIO_InitStructure.GPIO_PuPd  = GPIO_PuPd_UP;  GPIO_Init(DS1621_I2C_SDA_GPIO_PORT, &GPIO_InitStructure);}void DS1621_LowLevel_DeInit(void){  GPIO_InitTypeDef  GPIO_InitStructure;  /* Disable DS1621_I2C */  I2C_Cmd(DS1621_I2C, DISABLE);    /* DeInitializes the DS1621_I2C */  I2C_DeInit(DS1621_I2C);    /* DS1621_I2C Periph clock disable */  RCC_APB1PeriphClockCmd(DS1621_I2C_CLK, DISABLE);      /* Configure DS1621_I2C pins: SCL */  GPIO_InitStructure.GPIO_Pin = DS1621_I2C_SCL_PIN;  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN;  GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;  GPIO_Init(DS1621_I2C_SCL_GPIO_PORT, &GPIO_InitStructure);  /* Configure DS1621_I2C pins: SDA */  GPIO_InitStructure.GPIO_Pin = DS1621_I2C_SDA_PIN;  GPIO_Init(DS1621_I2C_SDA_GPIO_PORT, &GPIO_InitStructure);}void Basic_Configuration(uint8_t Data_Size, uint8_t I2C_Direction){  I2C_NumberOfBytesConfig(DS1621_I2C, Data_Size);  if (I2C_Direction == I2C_Direction_Transmitter)  {    I2C_MasterRequestConfig(DS1621_I2C, I2C_Direction_Transmitter);    I2C_SlaveAddressConfig(DS1621_I2C, DS1621_ADDR);  }  else  {    I2C_MasterRequestConfig(DS1621_I2C, I2C_Direction_Receiver);    I2C_SlaveAddressConfig(DS1621_I2C, DS1621_ADDR_R);  }}void I2C_stop(I2C_TypeDef* I2Cx){ // Send I2C1 STOP Condition I2C_GenerateSTOP(I2Cx, ENABLE);}                #ifdef  USE_FULL_ASSERTvoid assert_failed(uint8_t* file, uint32_t line){   while (1)  {  }}#endif