我使用STM32G030F6 I2C2 进行AT24C256读写操作，始终不成功！不知道什么原因

问答
是否解决:	未解决

大大风回答时间：2022-7-19 10:14:54

int I2C_EE_PageWrite( uint16_t WriteAddr, uint8_t* pBuffer, uint16_t NumByteToWrite )
{
uint16_t timeout;
int i;

// While the bus is busy
for( timeout = I2C_TIMEOUT; __HAL_I2C_GET_FLAG( &hi2c2, I2C_FLAG_BUSY ) != RESET; )
{
if( ( timeout--) == 0 ) goto I2C_WRITE_ERROR;
}

// Send Touch address for write
I2C_TransferConfig( &hi2c2, AT24CXX_ADDR, 2 + NumByteToWrite, I2C_RELOAD_MODE, I2C_GENERATE_START_WRITE );

for( timeout = I2C_TIMEOUT; __HAL_I2C_GET_FLAG( &hi2c2, I2C_FLAG_TXIS ) == RESET; )
{
if( ( timeout--) == 0 ) goto I2C_WRITE_ERROR;
}

for( i = 0; i < 2; i++ )
{
// Test on EV8 and clear it
for( timeout = I2C_TIMEOUT; __HAL_I2C_GET_FLAG( &hi2c2, I2C_FLAG_TXIS ) == RESET; )
{
if( ( timeout--) == 0 ) goto I2C_WRITE_ERROR;
}

switch( i )
{
case 0: hi2c2.Instance->TXDR = ( WriteAddr & 0xFF00 ) >> 8; break;
case 1: hi2c2.Instance->TXDR = WriteAddr & 0x00FF; break;
}
}

I2C_TransferConfig( &hi2c2, AT24CXX_ADDR, NumByteToWrite, I2C_AUTOEND_MODE, I2C_NO_STARTSTOP );

// While there is data to be written
while( NumByteToWrite-- )
{
// Test on EV8 and clear it
for( timeout = I2C_TIMEOUT; __HAL_I2C_GET_FLAG( &hi2c2, I2C_FLAG_TXIS ) == RESET; )
{
if( ( timeout--) == 0 ) goto I2C_WRITE_ERROR;
}

// Send the current byte
hi2c2.Instance->TXDR = *pBuffer;

// Point to the next byte to be written
pBuffer++;
}

// Send STOP condition
for( timeout = I2C_TIMEOUT; __HAL_I2C_GET_FLAG( &hi2c2, I2C_ISR_STOPF ) == RESET; )
{
if( ( timeout--) == 0 ) goto I2C_WRITE_ERROR;
}

hi2c2.Instance->CR2 |= I2C_CR2_STOP; //发送结束信号

return TRUE;

I2C_WRITE_ERROR:
hi2c2.Instance->CR2 |= I2C_CR2_STOP; //发送结束信号
return FALSE;
}

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大大风回答时间：2022-7-19 10:11:28

void HAL_I2C_MspInit(I2C_HandleTypeDef* hi2c)
{
GPIO_InitTypeDef GPIO_InitStruct = {0};
if( hi2c->Instance == I2C2 )
{
__HAL_RCC_GPIOA_CLK_ENABLE();

/* I2C2 GPIO Configuration
PA11 ------> I2C2_SCL
PA12 ------> I2C2_SDA */

GPIO_InitStruct.Pin = GPIO_PIN_11 | GPIO_PIN_12;
GPIO_InitStruct.Mode = GPIO_MODE_AF_OD;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_MEDIUM;
GPIO_InitStruct.Alternate = GPIO_AF6_I2C2;
HAL_GPIO_Init( GPIOA, &GPIO_InitStruct );

// Peripheral clock enable
__HAL_RCC_I2C2_CLK_ENABLE();
}
}

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大大风回答时间：2022-7-19 10:14:12

void I2C_DevInit(void)
{
hi2c2.Instance = I2C2;
hi2c2.Init.Timing = 0x00602173;
hi2c2.Init.OwnAddress1 = 0;
hi2c2.Init.AddressingMode = I2C_ADDRESSINGMODE_7BIT;
hi2c2.Init.DualAddressMode = I2C_DUALADDRESS_DISABLE;
hi2c2.Init.OwnAddress2 = 0;
hi2c2.Init.OwnAddress2Masks = I2C_OA2_NOMASK;
hi2c2.Init.GeneralCallMode = I2C_GENERALCALL_DISABLE;
hi2c2.Init.NoStretchMode = I2C_NOSTRETCH_DISABLE;
if( HAL_I2C_Init( &hi2c2 ) != HAL_OK )
{
Error_Handler();
}

if( HAL_I2CEx_ConfigAnalogFilter( &hi2c2, I2C_ANALOGFILTER_ENABLE ) != HAL_OK )
{
Error_Handler();
}

if( HAL_I2CEx_ConfigDigitalFilter( &hi2c2, 0 ) != HAL_OK )
{
Error_Handler();
}
}

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大大风回答时间：2022-7-18 17:04:23

void I2C_DevInit(void){ hi2c2.Instance = I2C2; hi2c2.Init.Timing = 0x00602173; hi2c2.Init.OwnAddress1 = 0; hi2c2.Init.AddressingMode = I2C_ADDRESSINGMODE_7BIT; hi2c2.Init.DualAddressMode = I2C_DUALADDRESS_DISABLE; hi2c2.Init.OwnAddress2 = 0; hi2c2.Init.OwnAddress2Masks = I2C_OA2_NOMASK; hi2c2.Init.GeneralCallMode = I2C_GENERALCALL_DISABLE; hi2c2.Init.NoStretchMode = I2C_NOSTRETCH_DISABLE; if( HAL_I2C_Init( &hi2c2 ) != HAL_OK ) { Error_Handler(); } if( HAL_I2CEx_ConfigAnalogFilter( &hi2c2, I2C_ANALOGFILTER_ENABLE ) != HAL_OK ) { Error_Handler(); } if( HAL_I2CEx_ConfigDigitalFilter( &hi2c2, 0 ) != HAL_OK ) { Error_Handler(); }}

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大大风回答时间：2022-7-18 17:05:10

void I2C_DevInit(void)
{
hi2c2.Instance = I2C2;
hi2c2.Init.Timing = 0x00602173;
hi2c2.Init.OwnAddress1 = 0;
hi2c2.Init.AddressingMode = I2C_ADDRESSINGMODE_7BIT;
hi2c2.Init.DualAddressMode = I2C_DUALADDRESS_DISABLE;
hi2c2.Init.OwnAddress2 = 0;
hi2c2.Init.OwnAddress2Masks = I2C_OA2_NOMASK;
hi2c2.Init.GeneralCallMode = I2C_GENERALCALL_DISABLE;
hi2c2.Init.NoStretchMode = I2C_NOSTRETCH_DISABLE;
if( HAL_I2C_Init( &hi2c2 ) != HAL_OK )
{
Error_Handler();
}

if( HAL_I2CEx_ConfigAnalogFilter( &hi2c2, I2C_ANALOGFILTER_ENABLE ) != HAL_OK )
{
Error_Handler();
}

if( HAL_I2CEx_ConfigDigitalFilter( &hi2c2, 0 ) != HAL_OK )
{
Error_Handler();
}
}

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大大风回答时间：2022-7-18 17:06:21

然后调用库函数
uint16_t timeout;
int i;
uint8_t buf[ 256 ];

buf[ 0 ] = ( WriteAddr & 0xFF00 ) >> 8;
buf[ 1 ] = WriteAddr & 0x00FF;

memcpy( &buf[ 2 ], pBuffer, NumByteToWrite );
HAL_I2C_Master_Transmit( &hi2c2, AT24CXX_ADDR, buf, NumByteToWrite + 2, 0x10 );

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