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How to Initialize the ANT7-T-ST25DV64KC Using the Standard Library

sjek
Associate II

我目前正在从事一个需要使用 STM32F103C8T6 微控制器和标准库进行代码编写的项目。在此过程中,我遇到了 ANT7-T-ST25DV64KC 芯片初始化的问题,一直卡在“while (!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_MODE_SELECT));在此步骤中,我还对读取 I2C_SS0_Dyn 数据感到困惑。读出的数据永远是我在 read 函数中写的 slave 地址,有时读出的数据会增加 1。

这是我的代码

 

无效 ST25DV_Init(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
I2C_InitTypeDef I2C_InitStructure;
NVIC_InitTypeDef NVIC_InitStruct;
 
SystemClock_Config();
 
 
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB,启用);
 
 
 
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_OD;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOB, &GPIO_InitStructure);
 
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_11;
GPIO_Init(GPIOB, &GPIO_InitStructure);
 
RCC_APB1PeriphClockCmd(RCC_APB1Periph_I2C2,启用);
 
I2C_InitStructure.I2C_模式 = I2C_Mode_I2C;
I2C_InitStructure.I2C_ClockSpeed = 100000;
I2C_InitStructure.I2C_占空比 = I2C_DutyCycle_2;
I2C_InitStructure.I2C_Ack = I2C_Ack_Enable;
I2C_InitStructure.I2C_AcknowledgedAddress = I2C_AcknowledgedAddress_7bit;
I2C_InitStructure.I2C_OwnAddress1 = 0x00;
I2C_Init(I2C2, &I2C_InitStructure);
 
I2C_Cmd(I2C2, 启用);
 
 
 
 
NVIC_InitStruct.NVIC_IRQChannel = EXTI2_IRQn |EXTI3_IRQn;
NVIC_InitStruct.NVIC_IRQChannelPreemptionPriority = 0;
NVIC_InitStruct.NVIC_IRQChannelSubPriority = 0;
NVIC_InitStruct.NVIC_IRQChannelCmd = 启用;
NVIC_Init(&NVIC_InitStruct);
}
 
 
void ANT7_T_ST25DV64KC_WriteReg(uint16_t RegAddress, uint8_t Data)
{
I2C_GenerateSTART(I2C2, 启用);
    
while (!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_MODE_SELECT));
 
I2C_Send7bitAddress(I2C2, ANT7_T_ST25DV64KC_ADDRESS, I2C_Direction_Transmitter);
    
while (!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_TRANSMITTER_MODE_SELECTED));
 
I2C_SendData(I2C2, (uint8_t)(RegAddress >> 8));
 
while (!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_BYTE_TRANSMITTING));
 
I2C_SendData(I2C2, (uint8_t)(RegAddress & 0xFF));
 
while (!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_BYTE_TRANSMITTING));
    
I2C_SendData(I2C2,数据);
    
while (!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_BYTE_TRANSMITTED));
    
I2C_GenerateSTOP(I2C2, 启用);
}
 
uint8_t ANT7_T_ST25DV64KC_ReadReg(uint16_t RegAddress)
{
uint8_t 数据;
 
I2C_GenerateSTART(I2C2, 启用);
    
    while (!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_MODE_SELECT));
 
    I2C_Send7bitAddress(I2C2, ANT7_T_ST25DV64KC_ADDRESS, I2C_Direction_Transmitter);
    
    while (!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_TRANSMITTER_MODE_SELECTED));
 
  I2C_SendData(I2C2, (uint8_t)(RegAddress >> 8));
    
    while (!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_BYTE_TRANSMITTED));
 
    I2C_SendData(I2C2, (uint8_t)(RegAddress & 0xFF));  
 
    while (!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_BYTE_TRANSMITTED));
    
    I2C_GenerateSTART(I2C2, ENABLE);
    
    while (!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_MODE_SELECT));
 
    I2C_Send7bitAddress(I2C2, ANT7_T_ST25DV64KC_ADDRESS, I2C_Direction_Receiver);
    
    while (!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_RECEIVER_MODE_SELECTED));
 
    I2C_AcknowledgeConfig(I2C2, DISABLE);
 
    I2C_GenerateSTOP(I2C2, ENABLE);
 
    while (!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_BYTE_RECEIVED));
 
    Data = I2C_ReceiveData(I2C2);
 
    I2C_AcknowledgeConfig(I2C2, ENABLE);
 
    return Data;
}
4 REPLIES 4
sjek
Associate II

I'm currently working on a project that requires code writing using STM32F103C8T6 microcontrollers and standard libraries.

During this process, I ran into an issue with ANT7-T-ST25DV64KC chip initialization and kept getting stuck in "while (!"). I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_MODE_SELECT)); In this step, I was also confused about reading I2C_SS0_Dyn data. The read data is always the slave address I wrote in the read function, and sometimes the read data will increase by 1.

Here's my code

 

void ST25DV_Init(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
I2C_InitTypeDef I2C_InitStructure;
NVIC_InitTypeDef NVIC_InitStruct;

SystemClock_Config();


RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB,ENABLE);



GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_OD;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOB, &GPIO_InitStructure);

GPIO_InitStructure.GPIO_Pin = GPIO_Pin_11;
GPIO_Init(GPIOB, &GPIO_InitStructure);

RCC_APB1PeriphClockCmd(RCC_APB1Periph_I2C2,ENABLE);

I2C_InitStructure.I2C_Mode = I2C_Mode_I2C;
I2C_InitStructure.I2C_ClockSpeed = 100000;
I2C_InitStructure.I2C_DutyCycle = I2C_DutyCycle_2;
I2C_InitStructure.I2C_Ack = I2C_Ack_Enable;
I2C_InitStructure.I2C_AcknowledgedAddress = I2C_AcknowledgedAddress_7bit;
I2C_InitStructure.I2C_OwnAddress1 = 0x00;
I2C_Init(I2C2, &I2C_InitStructure);

I2C_Cmd(I2C2,ENABLE);




NVIC_InitStruct.NVIC_IRQChannel = EXTI2_IRQn |EXTI3_IRQn;
NVIC_InitStruct.NVIC_IRQChannelPreemptionPriority = 0;
NVIC_InitStruct.NVIC_IRQChannelSubPriority = 0;
NVIC_InitStruct.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStruct);
}


void ANT7_T_ST25DV64KC_WriteReg(uint16_t RegAddress, uint8_t Data)
{
I2C_GenerateSTART(I2C2, ENABLE);
    
while (!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_MODE_SELECT));

I2C_Send7bitAddress(I2C2, ANT7_T_ST25DV64KC_ADDRESS, I2C_Direction_Transmitter);
    
while (!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_TRANSMITTER_MODE_SELECTED));

I2C_SendData(I2C2, (uint8_t)(RegAddress >> 8));

while (!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_BYTE_TRANSMITTING));

I2C_SendData(I2C2, (uint8_t)(RegAddress & 0xFF));

while (!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_BYTE_TRANSMITTING));
    
I2C_SendData(I2C2,Data);
    
while (!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_BYTE_TRANSMITTED));
    
I2C_GenerateSTOP(I2C2, ENABLE);
}

uint8_t ANT7_T_ST25DV64KC_ReadReg(uint16_t RegAddress)
{
uint8_t Data;

I2C_GenerateSTART(I2C2, ENABLE);
    
    while (!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_MODE_SELECT));

    I2C_Send7bitAddress(I2C2, ANT7_T_ST25DV64KC_ADDRESS, I2C_Direction_Transmitter);
    
    while (!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_TRANSMITTER_MODE_SELECTED));

  I2C_SendData(I2C2, (uint8_t)(RegAddress >> 8));
    
    while (!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_BYTE_TRANSMITTED));

    I2C_SendData(I2C2, (uint8_t)(RegAddress & 0xFF));  

    while (!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_BYTE_TRANSMITTED));
    
    I2C_GenerateSTART(I2C2, ENABLE);
    
    while (!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_MODE_SELECT));

    I2C_Send7bitAddress(I2C2, ANT7_T_ST25DV64KC_ADDRESS, I2C_Direction_Receiver);
    
    while (!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_RECEIVER_MODE_SELECTED));

    I2C_AcknowledgeConfig(I2C2, DISABLE);

    I2C_GenerateSTOP(I2C2, ENABLE);

    while (!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_BYTE_RECEIVED));

    Data = I2C_ReceiveData(I2C2);

    I2C_AcknowledgeConfig(I2C2, ENABLE);

    return Data;
}

 

Please see the Posting Tips for how to properly post source code:

https://community.st.com/t5/community-guidelines/how-to-write-your-question-to-maximize-your-chances-to-find-a/ta-p/575228

I've edited the post for you.

ty

Cedric Dalban
ST Employee

Hello Sjek,

this thread seems similar to the following thread:

How to initialize a mailbox - STMicroelectronics Community

please see this other thread.

thanks and regards,

Cedric.