#include "i2c.h"/* USER CODE BEGIN 0 *//* USER CODE END 0 */I2C_HandleTypeDef hi2c1;/* I2C1 init function */
void MX_I2C1_Init(void)
{/* USER CODE BEGIN I2C1_Init 0 *//* USER CODE END I2C1_Init 0 *//* USER CODE BEGIN I2C1_Init 1 *//* USER CODE END I2C1_Init 1 */hi2c1.Instance = I2C1;hi2c1.Init.ClockSpeed = 400000;hi2c1.Init.DutyCycle = I2C_DUTYCYCLE_2;hi2c1.Init.OwnAddress1 = 0;hi2c1.Init.AddressingMode = I2C_ADDRESSINGMODE_7BIT;hi2c1.Init.DualAddressMode = I2C_DUALADDRESS_DISABLE;hi2c1.Init.OwnAddress2 = 0;hi2c1.Init.GeneralCallMode = I2C_GENERALCALL_DISABLE;hi2c1.Init.NoStretchMode = I2C_NOSTRETCH_DISABLE;if (HAL_I2C_Init(&hi2c1) != HAL_OK){Error_Handler();}/* USER CODE BEGIN I2C1_Init 2 *//* USER CODE END I2C1_Init 2 */}void HAL_I2C_MspInit(I2C_HandleTypeDef* i2cHandle)
{GPIO_InitTypeDef GPIO_InitStruct = {0};if(i2cHandle->Instance==I2C1){/* USER CODE BEGIN I2C1_MspInit 0 *//* USER CODE END I2C1_MspInit 0 */__HAL_RCC_GPIOB_CLK_ENABLE();/**I2C1 GPIO ConfigurationPB6 ------> I2C1_SCLPB7 ------> I2C1_SDA*/GPIO_InitStruct.Pin = I2C1_SCL_Pin|I2C1_SDA_Pin;GPIO_InitStruct.Mode = GPIO_MODE_AF_OD;GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);/* I2C1 clock enable */__HAL_RCC_I2C1_CLK_ENABLE();/* USER CODE BEGIN I2C1_MspInit 1 *//* USER CODE END I2C1_MspInit 1 */}
}void HAL_I2C_MspDeInit(I2C_HandleTypeDef* i2cHandle)
{if(i2cHandle->Instance==I2C1){/* USER CODE BEGIN I2C1_MspDeInit 0 *//* USER CODE END I2C1_MspDeInit 0 *//* Peripheral clock disable */__HAL_RCC_I2C1_CLK_DISABLE();/**I2C1 GPIO ConfigurationPB6 ------> I2C1_SCLPB7 ------> I2C1_SDA*/HAL_GPIO_DeInit(I2C1_SCL_GPIO_Port, I2C1_SCL_Pin);HAL_GPIO_DeInit(I2C1_SDA_GPIO_Port, I2C1_SDA_Pin);/* USER CODE BEGIN I2C1_MspDeInit 1 *//* USER CODE END I2C1_MspDeInit 1 */}
}/* USER CODE BEGIN 1 */
ErrorCode eeprom_busy(void)
{HAL_StatusTypeDef ret;ret = HAL_I2C_IsDeviceReady(&hi2c1,SLAVER_ADDR,1000,5000);if(ret != HAL_OK)return ERR_I2C1DEVBUSY;else return ERR_OK;
}ErrorCode eeprom_pagewrite(uint16_t memaddr,uint8_t *pdata)
{ HAL_StatusTypeDef ret;if(memaddr%8 != 0)return ERR_INVALID_PARAM;ret = HAL_I2C_Mem_Write(&hi2c1,SLAVER_ADDR,memaddr,I2C_MEMADD_SIZE_8BIT,pdata,8,5000);if(ret != HAL_OK)return ERR_I2C1PAGEWRITEFAIL;elsereturn ERR_OK;
}ErrorCode eeprom_write(uint16_t memaddr,uint8_t *pdata,uint16_t len)
{HAL_StatusTypeDef ret;uint16_t pagenum,tail,pre;uint8_t *pback = pdata;if(memaddr>256 || len>256)return ERR_INVALID_PARAM;if(memaddr%8 ==0){pagenum = len/8;tail = len%8;while(pagenum--){if(ERR_OK != eeprom_pagewrite(memaddr,pback))return ERR_I2C1WRITEFAIL;eeprom_busy();memaddr+=8;pback+=8;}if(tail){ret = HAL_I2C_Mem_Write(&hi2c1,SLAVER_ADDR,memaddr,I2C_MEMADD_SIZE_8BIT,pback,tail,5000);if(HAL_OK != ret)return ERR_I2C1WRITEFAIL;eeprom_busy();}}else{pre = 8-memaddr%8;pagenum = (len-pre)/8;if(!pagenum){ret = HAL_I2C_Mem_Write(&hi2c1,SLAVER_ADDR,memaddr,I2C_MEMADD_SIZE_8BIT,pback,pre,5000);if(HAL_OK != ret)return ERR_I2C1WRITEFAIL;eeprom_busy();memaddr+=pre;pback+=pre;if(len>pre){ret = HAL_I2C_Mem_Write(&hi2c1,SLAVER_ADDR,memaddr,I2C_MEMADD_SIZE_8BIT,pback,len-pre,5000);if(HAL_OK != ret)return ERR_I2C1WRITEFAIL;eeprom_busy();}}else{ret = HAL_I2C_Mem_Write(&hi2c1,SLAVER_ADDR,memaddr,I2C_MEMADD_SIZE_8BIT,pback,pre,5000);if(HAL_OK != ret)return ERR_I2C1WRITEFAIL;eeprom_busy();memaddr+=pre;pback+=pre;tail = (len-pre)%8;while(pagenum--){if(ERR_OK != eeprom_pagewrite(memaddr,pback))return ERR_I2C1WRITEFAIL;eeprom_busy();memaddr+=8;pback+=8;}if(tail){ret = HAL_I2C_Mem_Write(&hi2c1,SLAVER_ADDR,memaddr,I2C_MEMADD_SIZE_8BIT,pback,tail,5000);if(HAL_OK != ret)return ERR_I2C1WRITEFAIL;eeprom_busy();}}}return ERR_OK;
}ErrorCode eeprom_read(uint16_t memaddr,uint8_t *buff,uint16_t len)
{HAL_StatusTypeDef ret;if(len > 256 || memaddr > 256)return ERR_INVALID_PARAM;if(256-memaddr < len)len = 256-memaddr;ret = HAL_I2C_Mem_Read(&hi2c1,SLAVER_ADDR,memaddr,I2C_MEMADD_SIZE_8BIT,buff,len,1000);if(ret != HAL_OK)return ERR_I2C1READFAIL;elsereturn ERR_OK;
}
/* USER CODE END 1 */
