//______________________________________________________________________________________
_i2c *Initialize_I2C(int addr, int speed)
{
I2C_InitTypeDef I2C_InitStructure;
GPIO_InitTypeDef GPIO_InitStructure;
_i2c *p=calloc(1,sizeof(_i2c));
if(addr)
p->addr=addr;
if(speed)
p->speed=speed;
GPIO_StructInit(&GPIO_InitStructure);
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
GPIO_InitStructure.GPIO_OType = GPIO_OType_OD;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6 | GPIO_Pin_7;
GPIO_Init(GPIOB, &GPIO_InitStructure);
GPIO_PinAFConfig(GPIOB, GPIO_PinSource6, GPIO_AF_I2C1);
GPIO_PinAFConfig(GPIOB, GPIO_PinSource7, GPIO_AF_I2C1);
RCC_APB1PeriphClockCmd(RCC_APB1Periph_I2C1, ENABLE);
RCC_APB1PeriphResetCmd(RCC_APB1Periph_I2C1, ENABLE);
RCC_APB1PeriphResetCmd(RCC_APB1Periph_I2C1, DISABLE);
I2C_DeInit(I2C1);
I2C_StructInit(&I2C_InitStructure);
I2C_InitStructure.I2C_Mode = I2C_Mode_SMBusHost;
I2C_InitStructure.I2C_DutyCycle = I2C_DutyCycle_2;
I2C_InitStructure.I2C_OwnAddress1 = 0x00;
I2C_InitStructure.I2C_Ack = I2C_Ack_Enable;
I2C_InitStructure.I2C_AcknowledgedAddress = I2C_AcknowledgedAddress_7bit;
I2C_InitStructure.I2C_ClockSpeed = speed;
I2C_Init(I2C1, &I2C_InitStructure);
I2C_StretchClockCmd(I2C1, ENABLE);
I2C_ARPCmd(I2C1, ENABLE);
I2C_AcknowledgeConfig(I2C1, ENABLE);
I2C_Cmd(I2C1, ENABLE);
I2C_ITConfig(I2C1, I2C_IT_ERR , ENABLE);
return p;
}
/*************************************************************
* I2C initialization code template
**************************************************************/
void I2C1_Init()
{
#if (STRCMP($interruptEn$, 0) == 0)
NVIC_InitTypeDef NVIC_InitStructure;
#endif
I2C_InitTypeDef I2C_InitStructure;
//PUT_A_NEW_LINE_HERE
//
// Enable I2C clock
//
RCC_APB1PeriphClockCmd(RCC_APB1Periph_I2C1, ENABLE);
#if (STRCMP($SCL1$, DISABLE) == 0 || STRCMP($SDA1$, DISABLE) == 0)
//PUT_A_NEW_LINE_HERE
//
// Enable AFIO and I2C clock
//
RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO, ENABLE);
//PUT_A_NEW_LINE_HERE
//
// I2C SCL pin remap to PB8, I2C SDA pin remap to PB8
//
GPIO_PinRemapConfig(GPIO_Remap_I2C1,ENABLE);
#endif
//PUT_A_NEW_LINE_HERE
//
// I2C config
//
I2C_InitStructure.I2C_Mode = $mode$;
I2C_InitStructure.I2C_DutyCycle = $dutyCycle$;
I2C_InitStructure.I2C_OwnAddress1 = $ownAddress$;
I2C_InitStructure.I2C_Ack = $ack$;
I2C_InitStructure.I2C_AcknowledgedAddress = $ackAddress$;
I2C_InitStructure.I2C_ClockSpeed = $speed$;
I2C_Init($I2C$, &I2C_InitStructure);
//PUT_A_NEW_LINE_HERE
//
// Enable I2C
//
I2C_Cmd($I2C$, ENABLE);
I2C_Init($I2C$, &I2C_InitStructure);
#if (STRCMP($interruptEn$, 0) == 0)
//PUT_A_NEW_LINE_HERE
//
// Enable I2C DualAddress
//
I2C_OwnAddress2Config($I2C$, $ownAddress2$);
I2C_DualAddressCmd($I2C$, ENABLE);
#endif
#if($modeSelect$)
//PUT_A_NEW_LINE_HERE
//
// Transmits the address byte to select the slave device
//
I2C_Send7bitAddress($I2C$, $slaveAddress$, $transferDirection$);
#endif
#if(STRCMP($GenCallEn$, DISABLE) == 0)
//PUT_A_NEW_LINE_HERE
//
// Enables I2C1 general call feature
//
I2C_GeneralCallCmd($I2C$, ENABLE);
#endif
#if(STRCMP($StrchClkEn$, DISABLE) == 0)
//PUT_A_NEW_LINE_HERE
//
// Enables I2C1 Clock stretching
//
I2C_StretchClockCmd($I2C$, ENABLE);
#endif
#if (STRCMP($interruptEn$, 0) == 0)
//PUT_A_NEW_LINE_HERE
//
// Interrupt config
//
I2C_ITConfig($I2C$, $interruptEn$, ENABLE);
NVIC_InitStructure.NVIC_IRQChannel = I2C1_EV_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
#endif
#if($pecTransmitEn$)
//PUT_A_NEW_LINE_HERE
//
// PEC Transmit Enable
//
#if($pecTransmitEn$)
I2C_TransmitPEC($I2C$, ENABLE);
#endif
#if($pecCalculateEn$)
I2C_CalculatePEC($I2C$, ENABLE);
#endif
#if(STRCMP($pecPosition$, I2C_PECPosition_Next))
I2C_PECPositionConfig($I2C$, $pecPosition$);
#endif
#if(STRCMP($pecPosition$, I2C_PECPosition_Current))
I2C_PECPositionConfig($I2C$, $pecPosition$);
#endif
#endif
#if(!STRCMP($mode$, I2C_Mode_I2C))
//PUT_A_NEW_LINE_HERE
//
// PEC Transmit Enable
//
I2C_SMBusAlertConfig($I2C$, $SMBusAlertCfg$);
I2C_ARPCmd($I2C$, $ARPEn$);
#endif
}
