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* Read data from specific block and specific byte in this block * Member of TM_OTP_Result_t enumeration is returnedĮxtern TM_OTP_Result_t TM_OTP_Write(uint8_t block, uint8_t byte, uint8_t data) * OTP byte inside one block, 0 to 31 is allowed * if you will try to do it more times, you can have broken data at this location. * - You can only ONCE write data at desired byte in specific block, * Write one-time data to specific block and specific byte in this block * or if you try to write data to locked block * This is returned when you try to write data to location which does not exists,

You don’t need to write entire block at a time!.If you lock your block, you are unable to unblock it back and you are unable to write data to block even if it is completelly empty,.When you write data to specific OTP location which is empty, and if you try to write data there again, you can expect broken data after write,.

His “work” is to store information about states of data block, because you can lock each block forever even if it is totally empty. There is also 17th block with 16 bytes of data. Bytes are structured in 16 data blocks where each block has 32 data bytes of available memory. They can be used for permanent store of configuration data for your device. STm32F4xx devices have OTP ( One- Time- Programmable) bytes.