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| /* | -------------------------------- R2T Team Libraries ------------------------- | ||
| * | @Created On Sep,11,2015 | ||
| * | @File Name : at24_hal_i2c | ||
| * | @Brief : STM32 HAL Driver for AT24 eeprom series | ||
| * | @Copyright : | ||
| * | This program is free software: you can redistribute it and/or modify | ||
| * | it under the terms of the GNU General Public License as published by | ||
| * | the Free Software Foundation, either version 3 of the License, or | ||
| * | any later version. | ||
| * | | ||
| * | This program is distributed in the hope that it will be useful, | ||
| * | but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| * | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| * | GNU General Public License for more details. | ||
| * | | ||
| * | You should have received a copy of the GNU General Public License | ||
| * | along with this program. If not, see <http://www.gnu.org/licenses/>. | ||
| * | @Author : Sina Darvishi | ||
| * | @Website : R2T.IR | ||
| * | | ||
| **/ | ||
| /* Includes ------------------------------------------------------------------*/ | ||
| #include "stm32f0xx_hal.h" | ||
| #include "stm32f0xx_hal_i2c.h" | ||
| #include <string.h> | ||
| #include <stdio.h> | ||
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| int at24_HAL_WriteBytes(I2C_HandleTypeDef *hi2c,uint16_t DevAddress,uint16_t MemAddress, uint8_t *pData,uint16_t TxBufferSize); | ||
| int at24_HAL_ReadBytes(I2C_HandleTypeDef *hi2c,uint16_t DevAddress,uint16_t MemAddress, uint8_t *pData,uint16_t RxBufferSize); | ||
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| int at24_HAL_SequentialRead(I2C_HandleTypeDef *hi2c ,uint8_t DevAddress,uint16_t MemAddress,uint8_t *pData,uint16_t RxBufferSize); | ||
| int at24_HAL_EraseMemFull(I2C_HandleTypeDef *hi2c); | ||
| int at24_HAL_WriteString(I2C_HandleTypeDef *hi2c,char *pString ,uint16_t MemAddress ,uint8_t length); | ||
| int at24_HAL_ReadString(I2C_HandleTypeDef *hi2c,char *pString,uint16_t MemAddress,uint8_t length); | ||
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| /** | ||
| * @brief : This function handles Writing Array of Bytes on the specific Address . | ||
| * This program have this feature that don't force you to use absolute 16 bytes | ||
| * you can use more than 16 bytes buffer. | ||
| * @param hi2c : Pointer to a I2C_HandleTypeDef structure that contains | ||
| * the configuration information for the specified I2C. | ||
| * @param DevAddress : specifies the slave address to be programmed(EEPROM ADDRESS). | ||
| * @param MemAddress : Internal memory address (WHERE YOU WANNA WRITE TO) | ||
| * @param pData : Pointer to data buffer | ||
| * @param TxBufferSize : Amount of data you wanna Write | ||
| * @retval | ||
| */ | ||
| int at24_HAL_WriteBytes(I2C_HandleTypeDef *hi2c,uint16_t DevAddress,uint16_t MemAddress, uint8_t *pData,uint16_t TxBufferSize) | ||
| { | ||
| /* | ||
| * program just get the DevAddress of the Slave (not master) and for the next step | ||
| * You know that the most of the EEprom address start with 0xA0 | ||
| * give MemAddress for the location you want to write to | ||
| * give Data buffer so it can write Data on this location | ||
| */ | ||
| //Note that this function works properly to 31 bytes | ||
| if(MemAddress+TxBufferSize > 16) | ||
| { | ||
| //Write to 16bytes | ||
| while(HAL_I2C_Mem_Write(hi2c,(uint16_t)DevAddress,(uint16_t)MemAddress,I2C_MEMADD_SIZE_8BIT,pData,(uint16_t)16-MemAddress,1000)!= HAL_OK); | ||
| //write remaining bytes | ||
| *pData = *pData + (16-MemAddress); | ||
| while(HAL_I2C_Mem_Write(hi2c,(uint16_t)DevAddress,(uint16_t)16,I2C_MEMADD_SIZE_8BIT,pData,(uint16_t)((MemAddress+TxBufferSize)-16),1000)!= HAL_OK); | ||
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| } | ||
| else | ||
| { | ||
| while( (TxBufferSize-16)>0 ) | ||
| { | ||
| //if your data is more than 16 bytes,you are here | ||
| while(HAL_I2C_Mem_Write(&hi2c,(uint16_t)DevAddress,(uint16_t)MemAddress,I2C_MEMADD_SIZE_8BIT,pData,(uint16_t)16,1000)!= HAL_OK); | ||
| TxBufferSize-=16; | ||
| pData+=16; | ||
| MemAddress+=16; | ||
| } | ||
| //remaining data | ||
| while(HAL_I2C_Mem_Write(hi2c,(uint16_t)DevAddress,(uint16_t)MemAddress,I2C_MEMADD_SIZE_8BIT,pData,(uint16_t)TxBufferSize,1000)!= HAL_OK); | ||
| } | ||
| return 1; | ||
| } | ||
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| int at24_HAL_ReadBytes(I2C_HandleTypeDef *hi2c,uint16_t DevAddress,uint16_t MemAddress, uint8_t *pData,uint16_t RxBufferSize) | ||
| { | ||
| int TimeOut; | ||
| /* | ||
| * program just get the DevAddress of the Slave (not master) and for the next step | ||
| * You know that the most of the EEprom address start with 0xA0 | ||
| * get the MemAddress for the location you want to write data on it | ||
| * get the Data buffer so it can write Data on this location | ||
| */ | ||
| //Note that this function works properly to 31bytes | ||
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| while( (RxBufferSize-16)>0 ) | ||
| { | ||
| //if your data is more than 16 bytes,you are here | ||
| TimeOut = 0; | ||
| while(HAL_I2C_Mem_Read(hi2c,(uint16_t)DevAddress,(uint16_t)MemAddress,I2C_MEMADD_SIZE_8BIT,pData,(uint16_t)16,1000)!= HAL_OK && TimeOut < 10) | ||
| { | ||
| TimeOut++; | ||
| } | ||
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| RxBufferSize-=16; | ||
| pData+=16; | ||
| MemAddress+=16; | ||
| } | ||
| // //remaining data | ||
| TimeOut = 0; | ||
| while(HAL_I2C_Mem_Read(hi2c,(uint16_t)DevAddress,(uint16_t)MemAddress,I2C_MEMADD_SIZE_8BIT,pData,(uint16_t)RxBufferSize,1000)!= HAL_OK && TimeOut < 10) | ||
| { | ||
| TimeOut++; | ||
| } | ||
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| return 1; | ||
| } | ||
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| /* | ||
| * @brief : This function handles Reading Array of Bytes from the specific Address . | ||
| * This program have this feature that don't force you to use absolute 16 bytes | ||
| * you can use more than 16 bytes buffer. | ||
| * @param hi2c : Pointer to a I2C_HandleTypeDef structure that contains | ||
| * the configuration information for the specified I2C. | ||
| * @param DevAddress : specifies the slave address to be programmed(EEPROM ADDRESS). | ||
| * @param MemAddress : Internal memory address (WHERE YOU WANNA READ FROM) | ||
| * @param pData : Pointer to data buffer | ||
| * @param TxBufferSize : Amount of data to be Read | ||
| * @retval | ||
| */ | ||
| int at24_HAL_SequentialRead(I2C_HandleTypeDef *hi2c ,uint8_t DevAddress,uint16_t MemAddress,uint8_t *pData,uint16_t RxBufferSize) | ||
| { | ||
| /* | ||
| * just like WriteByte but get what it want | ||
| * but maybe you should know that the Data is location you want to save data | ||
| * for future use | ||
| */ | ||
| while( (RxBufferSize-16)>0) | ||
| { | ||
| while(HAL_I2C_Mem_Read(&hi2c, (uint16_t)DevAddress,(uint16_t)MemAddress,I2C_MEMADD_SIZE_8BIT,pData, (uint16_t)16, (uint32_t)1000)!= HAL_OK); | ||
| RxBufferSize-=16; | ||
| pData+=16; | ||
| MemAddress+=16; | ||
| } | ||
| while(HAL_I2C_Mem_Read(&hi2c, (uint16_t)DevAddress,(uint16_t)MemAddress,I2C_MEMADD_SIZE_8BIT,pData, (uint16_t)RxBufferSize, (uint32_t)1000)!= HAL_OK); | ||
| /* | ||
| * if DataRecive is 0xFF or 255 ,this means that block was empty | ||
| */ | ||
| return 1; | ||
| } | ||
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| /* | ||
| * @brief : This function handles Erase Full chip. | ||
| * @param hi2c : Pointer to a I2C_HandleTypeDef structure that contains | ||
| * the configuration information for the specified I2C. | ||
| * @retval | ||
| */ | ||
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| int at24_HAL_EraseMemFull(I2C_HandleTypeDef *hi2c) | ||
| { | ||
| /* | ||
| * this may take will don't panic | ||
| */ | ||
| uint8_t EraseBuf[16] ={0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff}; | ||
| int i; | ||
| for (i =0 ; i<1024 ; i+16) | ||
| { | ||
| /* | ||
| * if you know,0xFF means that block is empty | ||
| */ | ||
| sdI2C_WriteBytes(&hi2c,0xA0,(uint16_t )i,EraseBuf,16); | ||
| } | ||
| return 1; | ||
| } | ||
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| /** | ||
| * @brief : This function handles Writing String on the specific Address . | ||
| * This program have this feature that don't force you to use absolute 16 bytes | ||
| * you can use more than 16 bytes buffer. | ||
| * @param hi2c : Pointer to a I2C_HandleTypeDef structure that contains | ||
| * the configuration information for the specified I2C. | ||
| * @param DevAddress : specifies the slave address to be programmed(EEPROM ADDRESS). | ||
| * @param MemAddress : Internal memory address (WHERE YOU WANNA Write) | ||
| * @param pString : Pointer to data buffer(CHAR DATA) | ||
| * @param length : Amount of buffer you wanna Write from | ||
| * @retval | ||
| */ | ||
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| int at24_HAL_WriteString(I2C_HandleTypeDef *hi2c,char *pString ,uint16_t MemAddress ,uint8_t length) | ||
| { | ||
| uint8_t pData[length]; | ||
| int i =0; | ||
| while(*pString) | ||
| (pData[i++])=(uint8_t)(*pString++); | ||
| sdI2C_WriteBytes(&hi2c,0xA0,MemAddress,pData,length); | ||
| return 1; | ||
| } | ||
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| /** | ||
| * @brief : This function handles Reading String on the specific Address . | ||
| * This program have this feature that don't force you to use absolute 16 bytes | ||
| * you can use more than 16 bytes buffer. | ||
| * @param hi2c : Pointer to a I2C_HandleTypeDef structure that contains | ||
| * the configuration information for the specified I2C. | ||
| * @param MemAddress : Internal memory address (WHERE YOU WANNA READ) | ||
| * @param pString : Pointer to data buffer(CHAR DATA) | ||
| * @param length : Amount of buffer you wanna Read from | ||
| * @retval | ||
| */ | ||
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| int at24_HAL_ReadString(I2C_HandleTypeDef *hi2c,char *pString,uint16_t MemAddress,uint8_t length) | ||
| { | ||
| uint8_t pData[length]; | ||
| int i=0; | ||
| sdI2C_RandomRead(0xA0,MemAddress,pData,length); | ||
| while(pData[i]) | ||
| (*pString++)=(char)pData[i++]; | ||
| return 1; | ||
| } | ||
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