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

[sjek]

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;

}

[sjek]

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;
}

[Andrew Neil]

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.

[sjek]

ty

[Cedric Dalban · Accepted solution]

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.