Hi,
Attached is the code where I am doing I2C write
//I2C write in memory*/
void I2C_write_mem()
{
/*** Mac ID read I2C read***/
char MSG2[] = " start I2C3 write \n\r";
HAL_UART_Transmit(&huart5,(uint8_t*)MSG2,sizeof(MSG2),1000);
HAL_Delay(1000);
uint16_t DevAddress = 0xA0;
uint16_t MemAddress = 0x0010;
uint8_t mac_id_buf2[6] = "";
char print_msg1[100] = "";
mac_id_buf2[0] = "AB";
mac_id_buf2[1] = "12";
mac_id_buf2[2] = "CD";
mac_id_buf2[3] = "34";
mac_id_buf2[4] = "FF";
mac_id_buf2[5] = "57";
if(HAL_OK == HAL_I2C_IsDeviceReady(&hi2c1,DevAddress,200,2000)){
if(HAL_OK == HAL_I2C_Mem_Write(&hi2c1,DevAddress,MemAddress,I2C_MEMADD_SIZE_8BIT,(uint8_t*)&mac_id_buf2,0x0006,HAL_MAX_DELAY)) {
strcpy(print_msg1,"SUCCESS HAL_I2C_Mem_write\r\n");
HAL_UART_Transmit(&huart5,(uint8_t*)print_msg1,strlen(print_msg1),1000);
//HAL_I2C_Mem_Write(&hi2c1,DevAddress,MemAddress,I2C_MEMADD_SIZE_8BIT,(uint8_t*)&mac_id_buf1[1],0x0002,HAL_MAX_DELAY);
//sprintf(print_msg1,"%X %X %X %X %X %X\r\n", mac_id_buf1[0],mac_id_buf1[1],mac_id_buf1[2],mac_id_buf1[3],mac_id_buf1[4],mac_id_buf1[5]);
//HAL_UART_Transmit(&huart5,(uint8_t*)print_msg1,strlen(print_msg1),1000);
}
else{
strcpy(print_msg1,"ERROR in HAL_I2C_Mem_Write()\r\n");
}
}
else{
strcpy(print_msg1,"ERROR in HAL_I2C_IsDeviceReady()\r\n");
}
}
also in while I am doing I2C read
//I2C mem read for memory*/
void I2C_read_mem()
{
/*** Mac ID read I2C read***/
char MSG2[] = " start I2C2 read \n\r";
HAL_UART_Transmit(&huart5,(uint8_t*)MSG2,sizeof(MSG2),1000);
HAL_Delay(1000);
uint16_t DevAddress = 0x40 << 1;
uint16_t MemAddress = 0x0010;
char mac_id_buf1[6] = "";
char print_msg1[100] = "";
if(HAL_OK == HAL_I2C_IsDeviceReady(&hi2c1,DevAddress,200,2000)){
if(HAL_OK == HAL_I2C_Mem_Read(&hi2c1,DevAddress,MemAddress,I2C_MEMADD_SIZE_8BIT,(uint8_t*)&mac_id_buf1[0],0x0006,HAL_MAX_DELAY)) {
strcpy(print_msg1,"SUCCESS HAL_I2C_Mem_Read\r\n");
HAL_UART_Transmit(&huart5,(uint8_t*)print_msg1,strlen(print_msg1),1000);
sprintf(print_msg1,"%X %X %X %X %X %X\r\n", mac_id_buf1[0],mac_id_buf1[1],mac_id_buf1[2],mac_id_buf1[3],mac_id_buf1[4],mac_id_buf1[5]);
HAL_UART_Transmit(&huart5,(uint8_t*)print_msg1,strlen(print_msg1),1000);
}
else{
strcpy(print_msg1,"ERROR in HAL_I2C_Mem_Read()\r\n");
}
}
else{
strcpy(print_msg1,"ERROR in HAL_I2C_IsDeviceReady()\r\n");
}
}
this is for MCU STM32476RG Interfaced using I2C with M24M02 chip.
I am seeing successfull message in both I2C read and Write but not seeing the values which are being written..kindly let me know where the issue is.
thanks and regards
Ravi
