/** * \file * \brief CryptoAuthLib Basic API methods for UpdateExtra command. * * The UpdateExtra command is used to update the values of the two extra bytes * within the Configuration zone after the Configuration zone has been locked. * * \note List of devices that support this command - ATSHA204A, ATECC108A, * ATECC508A, and ATECC608A. There are differences in the modes that they * support. Refer to device datasheets for full details. * * \copyright (c) 2015-2020 Microchip Technology Inc. and its subsidiaries. * * \page License * * Subject to your compliance with these terms, you may use Microchip software * and any derivatives exclusively with Microchip products. It is your * responsibility to comply with third party license terms applicable to your * use of third party software (including open source software) that may * accompany Microchip software. * * THIS SOFTWARE IS SUPPLIED BY MICROCHIP "AS IS". NO WARRANTIES, WHETHER * EXPRESS, IMPLIED OR STATUTORY, APPLY TO THIS SOFTWARE, INCLUDING ANY IMPLIED * WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY, AND FITNESS FOR A * PARTICULAR PURPOSE. IN NO EVENT WILL MICROCHIP BE LIABLE FOR ANY INDIRECT, * SPECIAL, PUNITIVE, INCIDENTAL OR CONSEQUENTIAL LOSS, DAMAGE, COST OR EXPENSE * OF ANY KIND WHATSOEVER RELATED TO THE SOFTWARE, HOWEVER CAUSED, EVEN IF * MICROCHIP HAS BEEN ADVISED OF THE POSSIBILITY OR THE DAMAGES ARE * FORESEEABLE. TO THE FULLEST EXTENT ALLOWED BY LAW, MICROCHIP'S TOTAL * LIABILITY ON ALL CLAIMS IN ANY WAY RELATED TO THIS SOFTWARE WILL NOT EXCEED * THE AMOUNT OF FEES, IF ANY, THAT YOU HAVE PAID DIRECTLY TO MICROCHIP FOR * THIS SOFTWARE. */ #include "atca_basic.h" #include "atca_execution.h" /** \brief Executes UpdateExtra command to update the values of the two * extra bytes within the Configuration zone (bytes 84 and 85). * * Can also be used to decrement the limited use counter associated with the * key in slot NewValue. * * \param[in] mode Mode determines what operations the UpdateExtra * command performs. * \param[in] new_value Value to be written. * * \return ATCA_SUCCESS on success, otherwise an error code. */ ATCA_STATUS atcab_updateextra(uint8_t mode, uint16_t new_value) { ATCAPacket packet; ATCACommand ca_cmd = _gDevice->mCommands; ATCA_STATUS status = ATCA_GEN_FAIL; do { // Build command memset(&packet, 0, sizeof(packet)); packet.param1 = mode; packet.param2 = new_value; if ((status = atUpdateExtra(ca_cmd, &packet)) != ATCA_SUCCESS) { break; } if ((status = atca_execute_command(&packet, _gDevice)) != ATCA_SUCCESS) { break; } } while (0); return status; }