339 lines
24 KiB
C++
339 lines
24 KiB
C++
#include "Arduino.h"
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#ifndef sha204_library_H
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#define sha204_library_H
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/* bitbang_config.h */
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#define PORT_ACCESS_TIME (630) //! time it takes to toggle the pin at CPU clock of 16 MHz (ns)
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#define START_PULSE_WIDTH (4340) //! width of start pulse (ns)
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#define BIT_DELAY (4) //! delay macro for width of one pulse (start pulse or zero pulse, in ns)
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#define RX_TX_DELAY (15) //! turn around time when switching from receive to transmit
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#define START_PULSE_TIME_OUT (255) //! This value is decremented while waiting for the falling edge of a start pulse.
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#define ZERO_PULSE_TIME_OUT (26) //! This value is decremented while waiting for the falling edge of a zero pulse.
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/* swi_phys.h */
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#define SWI_FUNCTION_RETCODE_SUCCESS ((uint8_t) 0x00) //!< Communication with device succeeded.
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#define SWI_FUNCTION_RETCODE_TIMEOUT ((uint8_t) 0xF1) //!< Communication timed out.
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#define SWI_FUNCTION_RETCODE_RX_FAIL ((uint8_t) 0xF9) //!< Communication failed after at least one byte was received.
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/* sha204_physical.h */
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#define SHA204_RSP_SIZE_MIN ((uint8_t) 4) //!< minimum number of bytes in response
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#define SHA204_RSP_SIZE_MAX ((uint8_t) 35) //!< maximum size of response packet
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#define SHA204_BUFFER_POS_COUNT (0) //!< buffer index of count byte in command or response
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#define SHA204_BUFFER_POS_DATA (1) //!< buffer index of data in response
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#define SHA204_WAKEUP_PULSE_WIDTH (uint8_t) (6.0 * CPU_CLOCK_DEVIATION_POSITIVE + 0.5) //! width of Wakeup pulse in 10 us units
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#define SHA204_WAKEUP_DELAY (uint8_t) (3.0 * CPU_CLOCK_DEVIATION_POSITIVE + 0.5) //! delay between Wakeup pulse and communication in ms
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/* sha204_swi.c */
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#define SHA204_SWI_FLAG_CMD ((uint8_t) 0x77) //!< flag preceding a command
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#define SHA204_SWI_FLAG_TX ((uint8_t) 0x88) //!< flag requesting a response
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#define SHA204_SWI_FLAG_IDLE ((uint8_t) 0xBB) //!< flag requesting to go into Idle mode
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#define SHA204_SWI_FLAG_SLEEP ((uint8_t) 0xCC) //!< flag requesting to go into Sleep mode
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/* sha204_comm_marshaling.h */
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// command op-code definitions
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#define SHA204_CHECKMAC ((uint8_t) 0x28) //!< CheckMac command op-code
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#define SHA204_DERIVE_KEY ((uint8_t) 0x1C) //!< DeriveKey command op-code
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#define SHA204_DEVREV ((uint8_t) 0x30) //!< DevRev command op-code
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#define SHA204_GENDIG ((uint8_t) 0x15) //!< GenDig command op-code
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#define SHA204_HMAC ((uint8_t) 0x11) //!< HMAC command op-code
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#define SHA204_LOCK ((uint8_t) 0x17) //!< Lock command op-code
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#define SHA204_MAC ((uint8_t) 0x08) //!< MAC command op-code
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#define SHA204_NONCE ((uint8_t) 0x16) //!< Nonce command op-code
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#define SHA204_PAUSE ((uint8_t) 0x01) //!< Pause command op-code
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#define SHA204_RANDOM ((uint8_t) 0x1B) //!< Random command op-code
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#define SHA204_READ ((uint8_t) 0x02) //!< Read command op-code
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#define SHA204_UPDATE_EXTRA ((uint8_t) 0x20) //!< UpdateExtra command op-code
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#define SHA204_WRITE ((uint8_t) 0x12) //!< Write command op-code
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// packet size definitions
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#define SHA204_RSP_SIZE_VAL ((uint8_t) 7) //!< size of response packet containing four bytes of data
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// parameter range definitions
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#define SHA204_KEY_ID_MAX ((uint8_t) 15) //!< maximum value for key id
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#define SHA204_OTP_BLOCK_MAX ((uint8_t) 1) //!< maximum value for OTP block
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// definitions for command packet indexes common to all commands
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#define SHA204_COUNT_IDX ( 0) //!< command packet index for count
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#define SHA204_OPCODE_IDX ( 1) //!< command packet index for op-code
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#define SHA204_PARAM1_IDX ( 2) //!< command packet index for first parameter
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#define SHA204_PARAM2_IDX ( 3) //!< command packet index for second parameter
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#define SHA204_DATA_IDX ( 5) //!< command packet index for second parameter
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// zone definitions
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#define SHA204_ZONE_CONFIG ((uint8_t) 0x00) //!< Configuration zone
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#define SHA204_ZONE_OTP ((uint8_t) 0x01) //!< OTP (One Time Programming) zone
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#define SHA204_ZONE_DATA ((uint8_t) 0x02) //!< Data zone
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#define SHA204_ZONE_MASK ((uint8_t) 0x03) //!< Zone mask
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#define SHA204_ZONE_COUNT_FLAG ((uint8_t) 0x80) //!< Zone bit 7 set: Access 32 bytes, otherwise 4 bytes.
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#define SHA204_ZONE_ACCESS_4 ((uint8_t) 4) //!< Read or write 4 bytes.
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#define SHA204_ZONE_ACCESS_32 ((uint8_t) 32) //!< Read or write 32 bytes.
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#define SHA204_ADDRESS_MASK_CONFIG ( 0x001F) //!< Address bits 5 to 7 are 0 for Configuration zone.
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#define SHA204_ADDRESS_MASK_OTP ( 0x000F) //!< Address bits 4 to 7 are 0 for OTP zone.
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#define SHA204_ADDRESS_MASK ( 0x007F) //!< Address bit 7 to 15 are always 0.
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// CheckMAC command definitions
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#define CHECKMAC_MODE_IDX SHA204_PARAM1_IDX //!< CheckMAC command index for mode
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#define CHECKMAC_KEYID_IDX SHA204_PARAM2_IDX //!< CheckMAC command index for key identifier
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#define CHECKMAC_CLIENT_CHALLENGE_IDX SHA204_DATA_IDX //!< CheckMAC command index for client challenge
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#define CHECKMAC_CLIENT_RESPONSE_IDX (37) //!< CheckMAC command index for client response
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#define CHECKMAC_DATA_IDX (69) //!< CheckMAC command index for other data
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#define CHECKMAC_COUNT (84) //!< CheckMAC command packet size
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#define CHECKMAC_MODE_MASK ((uint8_t) 0x27) //!< CheckMAC mode bits 3, 4, 6, and 7 are 0.
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#define CHECKMAC_CLIENT_CHALLENGE_SIZE (32) //!< CheckMAC size of client challenge
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#define CHECKMAC_CLIENT_RESPONSE_SIZE (32) //!< CheckMAC size of client response
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#define CHECKMAC_OTHER_DATA_SIZE (13) //!< CheckMAC size of "other data"
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// DeriveKey command definitions
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#define DERIVE_KEY_RANDOM_IDX SHA204_PARAM1_IDX //!< DeriveKey command index for random bit
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#define DERIVE_KEY_TARGETKEY_IDX SHA204_PARAM2_IDX //!< DeriveKey command index for target slot
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#define DERIVE_KEY_MAC_IDX SHA204_DATA_IDX //!< DeriveKey command index for optional MAC
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#define DERIVE_KEY_COUNT_SMALL SHA204_CMD_SIZE_MIN //!< DeriveKey command packet size without MAC
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#define DERIVE_KEY_COUNT_LARGE (39) //!< DeriveKey command packet size with MAC
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#define DERIVE_KEY_RANDOM_FLAG ((uint8_t) 4) //!< DeriveKey 1. parameter
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#define DERIVE_KEY_MAC_SIZE (32) //!< DeriveKey MAC size
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// DevRev command definitions
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#define DEVREV_PARAM1_IDX SHA204_PARAM1_IDX //!< DevRev command index for 1. parameter (ignored)
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#define DEVREV_PARAM2_IDX SHA204_PARAM2_IDX //!< DevRev command index for 2. parameter (ignored)
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#define DEVREV_COUNT SHA204_CMD_SIZE_MIN //!< DevRev command packet size
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// GenDig command definitions
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#define GENDIG_ZONE_IDX SHA204_PARAM1_IDX //!< GenDig command index for zone
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#define GENDIG_KEYID_IDX SHA204_PARAM2_IDX //!< GenDig command index for key id
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#define GENDIG_DATA_IDX SHA204_DATA_IDX //!< GenDig command index for optional data
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#define GENDIG_COUNT SHA204_CMD_SIZE_MIN //!< GenDig command packet size without "other data"
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#define GENDIG_COUNT_DATA (11) //!< GenDig command packet size with "other data"
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#define GENDIG_OTHER_DATA_SIZE (4) //!< GenDig size of "other data"
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#define GENDIG_ZONE_CONFIG ((uint8_t) 0) //!< GenDig zone id config
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#define GENDIG_ZONE_OTP ((uint8_t) 1) //!< GenDig zone id OTP
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#define GENDIG_ZONE_DATA ((uint8_t) 2) //!< GenDig zone id data
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// HMAC command definitions
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#define HMAC_MODE_IDX SHA204_PARAM1_IDX //!< HMAC command index for mode
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#define HMAC_KEYID_IDX SHA204_PARAM2_IDX //!< HMAC command index for key id
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#define HMAC_COUNT SHA204_CMD_SIZE_MIN //!< HMAC command packet size
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#define HMAC_MODE_MASK ((uint8_t) 0x74) //!< HMAC mode bits 0, 1, 3, and 7 are 0.
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// Lock command definitions
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#define LOCK_ZONE_IDX SHA204_PARAM1_IDX //!< Lock command index for zone
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#define LOCK_SUMMARY_IDX SHA204_PARAM2_IDX //!< Lock command index for summary
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#define LOCK_COUNT SHA204_CMD_SIZE_MIN //!< Lock command packet size
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#define LOCK_ZONE_NO_CONFIG ((uint8_t) 0x01) //!< Lock zone is OTP or Data
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#define LOCK_ZONE_NO_CRC ((uint8_t) 0x80) //!< Lock command: Ignore summary.
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#define LOCK_ZONE_MASK (0x81) //!< Lock parameter 1 bits 2 to 6 are 0.
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// Mac command definitions
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#define MAC_MODE_IDX SHA204_PARAM1_IDX //!< MAC command index for mode
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#define MAC_KEYID_IDX SHA204_PARAM2_IDX //!< MAC command index for key id
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#define MAC_CHALLENGE_IDX SHA204_DATA_IDX //!< MAC command index for optional challenge
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#define MAC_COUNT_SHORT SHA204_CMD_SIZE_MIN //!< MAC command packet size without challenge
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#define MAC_COUNT_LONG (39) //!< MAC command packet size with challenge
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#define MAC_MODE_BLOCK2_TEMPKEY ((uint8_t) 0x01) //!< MAC mode bit 0: second SHA block from TempKey
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#define MAC_MODE_BLOCK1_TEMPKEY ((uint8_t) 0x02) //!< MAC mode bit 1: first SHA block from TempKey
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#define MAC_MODE_SOURCE_FLAG_MATCH ((uint8_t) 0x04) //!< MAC mode bit 2: match TempKey.SourceFlag
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#define MAC_MODE_PASSTHROUGH ((uint8_t) 0x07) //!< MAC mode bit 0-2: pass-through mode
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#define MAC_MODE_INCLUDE_OTP_88 ((uint8_t) 0x10) //!< MAC mode bit 4: include first 88 OTP bits
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#define MAC_MODE_INCLUDE_OTP_64 ((uint8_t) 0x20) //!< MAC mode bit 5: include first 64 OTP bits
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#define MAC_MODE_INCLUDE_SN ((uint8_t) 0x40) //!< MAC mode bit 6: include serial number
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#define MAC_CHALLENGE_SIZE (32) //!< MAC size of challenge
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#define MAC_MODE_MASK ((uint8_t) 0x77) //!< MAC mode bits 3 and 7 are 0.
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// Nonce command definitions
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#define NONCE_MODE_IDX SHA204_PARAM1_IDX //!< Nonce command index for mode
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#define NONCE_PARAM2_IDX SHA204_PARAM2_IDX //!< Nonce command index for 2. parameter
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#define NONCE_INPUT_IDX SHA204_DATA_IDX //!< Nonce command index for input data
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#define NONCE_COUNT_SHORT (27) //!< Nonce command packet size for 20 bytes of data
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#define NONCE_COUNT_LONG (39) //!< Nonce command packet size for 32 bytes of data
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#define NONCE_MODE_MASK ((uint8_t) 3) //!< Nonce mode bits 2 to 7 are 0.
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#define NONCE_MODE_SEED_UPDATE ((uint8_t) 0x00) //!< Nonce mode: update seed
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#define NONCE_MODE_NO_SEED_UPDATE ((uint8_t) 0x01) //!< Nonce mode: do not update seed
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#define NONCE_MODE_INVALID ((uint8_t) 0x02) //!< Nonce mode 2 is invalid.
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#define NONCE_MODE_PASSTHROUGH ((uint8_t) 0x03) //!< Nonce mode: pass-through
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#define NONCE_NUMIN_SIZE (20) //!< Nonce data length
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#define NONCE_NUMIN_SIZE_PASSTHROUGH (32) //!< Nonce data length in pass-through mode (mode = 3)
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// Pause command definitions
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#define PAUSE_SELECT_IDX SHA204_PARAM1_IDX //!< Pause command index for Selector
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#define PAUSE_PARAM2_IDX SHA204_PARAM2_IDX //!< Pause command index for 2. parameter
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#define PAUSE_COUNT SHA204_CMD_SIZE_MIN //!< Pause command packet size
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// Random command definitions
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#define RANDOM_MODE_IDX SHA204_PARAM1_IDX //!< Random command index for mode
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#define RANDOM_PARAM2_IDX SHA204_PARAM2_IDX //!< Random command index for 2. parameter
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#define RANDOM_COUNT SHA204_CMD_SIZE_MIN //!< Random command packet size
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#define RANDOM_SEED_UPDATE ((uint8_t) 0x00) //!< Random mode for automatic seed update
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#define RANDOM_NO_SEED_UPDATE ((uint8_t) 0x01) //!< Random mode for no seed update
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// Read command definitions
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#define READ_ZONE_IDX SHA204_PARAM1_IDX //!< Read command index for zone
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#define READ_ADDR_IDX SHA204_PARAM2_IDX //!< Read command index for address
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#define READ_COUNT SHA204_CMD_SIZE_MIN //!< Read command packet size
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#define READ_ZONE_MASK ((uint8_t) 0x83) //!< Read zone bits 2 to 6 are 0.
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#define READ_ZONE_MODE_32_BYTES ((uint8_t) 0x80) //!< Read mode: 32 bytes
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// UpdateExtra command definitions
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#define UPDATE_MODE_IDX SHA204_PARAM1_IDX //!< UpdateExtra command index for mode
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#define UPDATE_VALUE_IDX SHA204_PARAM2_IDX //!< UpdateExtra command index for new value
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#define UPDATE_COUNT SHA204_CMD_SIZE_MIN //!< UpdateExtra command packet size
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#define UPDATE_CONFIG_BYTE_86 ((uint8_t) 0x01) //!< UpdateExtra mode: update Config byte 86
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// Write command definitions
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#define WRITE_ZONE_IDX SHA204_PARAM1_IDX //!< Write command index for zone
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#define WRITE_ADDR_IDX SHA204_PARAM2_IDX //!< Write command index for address
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#define WRITE_VALUE_IDX SHA204_DATA_IDX //!< Write command index for data
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#define WRITE_MAC_VS_IDX ( 9) //!< Write command index for MAC following short data
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#define WRITE_MAC_VL_IDX (37) //!< Write command index for MAC following long data
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#define WRITE_COUNT_SHORT (11) //!< Write command packet size with short data and no MAC
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#define WRITE_COUNT_LONG (39) //!< Write command packet size with long data and no MAC
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#define WRITE_COUNT_SHORT_MAC (43) //!< Write command packet size with short data and MAC
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#define WRITE_COUNT_LONG_MAC (71) //!< Write command packet size with long data and MAC
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#define WRITE_MAC_SIZE (32) //!< Write MAC size
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#define WRITE_ZONE_MASK ((uint8_t) 0xC3) //!< Write zone bits 2 to 5 are 0.
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#define WRITE_ZONE_WITH_MAC ((uint8_t) 0x40) //!< Write zone bit 6: write encrypted with MAC
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// Response size definitions
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#define CHECKMAC_RSP_SIZE SHA204_RSP_SIZE_MIN //!< response size of DeriveKey command
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#define DERIVE_KEY_RSP_SIZE SHA204_RSP_SIZE_MIN //!< response size of DeriveKey command
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#define DEVREV_RSP_SIZE SHA204_RSP_SIZE_VAL //!< response size of DevRev command returns 4 bytes
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#define GENDIG_RSP_SIZE SHA204_RSP_SIZE_MIN //!< response size of GenDig command
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#define HMAC_RSP_SIZE SHA204_RSP_SIZE_MAX //!< response size of HMAC command
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#define LOCK_RSP_SIZE SHA204_RSP_SIZE_MIN //!< response size of Lock command
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#define MAC_RSP_SIZE SHA204_RSP_SIZE_MAX //!< response size of MAC command
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#define NONCE_RSP_SIZE_SHORT SHA204_RSP_SIZE_MIN //!< response size of Nonce command with mode[0:1] = 3
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#define NONCE_RSP_SIZE_LONG SHA204_RSP_SIZE_MAX //!< response size of Nonce command
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#define PAUSE_RSP_SIZE SHA204_RSP_SIZE_MIN //!< response size of Pause command
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#define RANDOM_RSP_SIZE SHA204_RSP_SIZE_MAX //!< response size of Random command
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#define READ_4_RSP_SIZE SHA204_RSP_SIZE_VAL //!< response size of Read command when reading 4 bytes
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#define READ_32_RSP_SIZE SHA204_RSP_SIZE_MAX //!< response size of Read command when reading 32 bytes
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#define TEMP_SENSE_RSP_SIZE SHA204_RSP_SIZE_VAL //!< response size of TempSense command returns 4 bytes
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#define UPDATE_RSP_SIZE SHA204_RSP_SIZE_MIN //!< response size of UpdateExtra command
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#define WRITE_RSP_SIZE SHA204_RSP_SIZE_MIN //!< response size of Write command
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// command timing definitions for minimum execution times (ms)
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#define CHECKMAC_DELAY ((uint8_t) (12.0 * CPU_CLOCK_DEVIATION_NEGATIVE - 0.5))
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#define DERIVE_KEY_DELAY ((uint8_t) (14.0 * CPU_CLOCK_DEVIATION_NEGATIVE - 0.5))
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#define DEVREV_DELAY ((uint8_t) ( 0.4 * CPU_CLOCK_DEVIATION_NEGATIVE - 0.5))
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#define GENDIG_DELAY ((uint8_t) (11.0 * CPU_CLOCK_DEVIATION_NEGATIVE - 0.5))
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#define HMAC_DELAY ((uint8_t) (27.0 * CPU_CLOCK_DEVIATION_NEGATIVE - 0.5))
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#define LOCK_DELAY ((uint8_t) ( 5.0 * CPU_CLOCK_DEVIATION_NEGATIVE - 0.5))
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#define MAC_DELAY ((uint8_t) (12.0 * CPU_CLOCK_DEVIATION_NEGATIVE - 0.5))
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#define NONCE_DELAY ((uint8_t) (22.0 * CPU_CLOCK_DEVIATION_NEGATIVE - 0.5))
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#define PAUSE_DELAY ((uint8_t) ( 0.4 * CPU_CLOCK_DEVIATION_NEGATIVE - 0.5))
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#define RANDOM_DELAY ((uint8_t) (11.0 * CPU_CLOCK_DEVIATION_NEGATIVE - 0.5))
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#define READ_DELAY ((uint8_t) ( 0.4 * CPU_CLOCK_DEVIATION_NEGATIVE - 0.5))
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#define TEMP_SENSE_DELAY ((uint8_t) ( 4.0 * CPU_CLOCK_DEVIATION_NEGATIVE - 0.5))
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#define UPDATE_DELAY ((uint8_t) ( 4.0 * CPU_CLOCK_DEVIATION_NEGATIVE - 0.5))
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#define WRITE_DELAY ((uint8_t) ( 4.0 * CPU_CLOCK_DEVIATION_NEGATIVE - 0.5))
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// command timing definitions for maximum execution times (ms)
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#define CHECKMAC_EXEC_MAX ((uint8_t) (38.0 * CPU_CLOCK_DEVIATION_POSITIVE + 0.5))
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#define DERIVE_KEY_EXEC_MAX ((uint8_t) (62.0 * CPU_CLOCK_DEVIATION_POSITIVE + 0.5))
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#define DEVREV_EXEC_MAX ((uint8_t) ( 2.0 * CPU_CLOCK_DEVIATION_POSITIVE + 0.5))
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#define GENDIG_EXEC_MAX ((uint8_t) (43.0 * CPU_CLOCK_DEVIATION_POSITIVE + 0.5))
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#define HMAC_EXEC_MAX ((uint8_t) (69.0 * CPU_CLOCK_DEVIATION_POSITIVE + 0.5))
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#define LOCK_EXEC_MAX ((uint8_t) (24.0 * CPU_CLOCK_DEVIATION_POSITIVE + 0.5))
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#define MAC_EXEC_MAX ((uint8_t) (35.0 * CPU_CLOCK_DEVIATION_POSITIVE + 0.5))
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#define NONCE_EXEC_MAX ((uint8_t) (60.0 * CPU_CLOCK_DEVIATION_POSITIVE + 0.5))
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#define PAUSE_EXEC_MAX ((uint8_t) ( 2.0 * CPU_CLOCK_DEVIATION_POSITIVE + 0.5))
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#define RANDOM_EXEC_MAX ((uint8_t) (50.0 * CPU_CLOCK_DEVIATION_POSITIVE + 0.5))
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#define READ_EXEC_MAX ((uint8_t) ( 4.0 * CPU_CLOCK_DEVIATION_POSITIVE + 0.5))
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#define TEMP_SENSE_EXEC_MAX ((uint8_t) (11.0 * CPU_CLOCK_DEVIATION_POSITIVE + 0.5))
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#define UPDATE_EXEC_MAX ((uint8_t) ( 6.0 * CPU_CLOCK_DEVIATION_POSITIVE + 0.5))
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#define WRITE_EXEC_MAX ((uint8_t) (42.0 * CPU_CLOCK_DEVIATION_POSITIVE + 0.5))
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/* from sha204_config.h */
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#define CPU_CLOCK_DEVIATION_POSITIVE (1.01)
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#define CPU_CLOCK_DEVIATION_NEGATIVE (0.99)
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#define SHA204_RETRY_COUNT (1)
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#define SWI_RECEIVE_TIME_OUT ((uint16_t) 163) //! #START_PULSE_TIME_OUT in us instead of loop counts
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#define SWI_US_PER_BYTE ((uint16_t) 313) //! It takes 312.5 us to send a byte (9 single-wire bits / 230400 Baud * 8 flag bits).
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#define SHA204_SYNC_TIMEOUT ((uint8_t) 85)//! delay before sending a transmit flag in the synchronization routine
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#define SHA204_RESPONSE_TIMEOUT ((uint16_t) SWI_RECEIVE_TIME_OUT + SWI_US_PER_BYTE) //! SWI response timeout is the sum of receive timeout and the time it takes to send the TX flag.
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/* from sha204_comm.h */
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#define SHA204_COMMAND_EXEC_MAX ((uint8_t) (69.0 * CPU_CLOCK_DEVIATION_POSITIVE + 0.5)) //! maximum command delay
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#define SHA204_CMD_SIZE_MIN ((uint8_t) 7) //! minimum number of bytes in command (from count byte to second CRC byte)
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#define SHA204_CMD_SIZE_MAX ((uint8_t) 84) //! maximum size of command packet (CheckMac)
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#define SHA204_CRC_SIZE ((uint8_t) 2) //! number of CRC bytes
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#define SHA204_BUFFER_POS_STATUS (1) //! buffer index of status byte in status response
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#define SHA204_BUFFER_POS_DATA (1) //! buffer index of first data byte in data response
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#define SHA204_STATUS_BYTE_WAKEUP ((uint8_t) 0x11) //! command parse error
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#define SHA204_STATUS_BYTE_PARSE ((uint8_t) 0x03) //! command parse error
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#define SHA204_STATUS_BYTE_EXEC ((uint8_t) 0x0F) //! command execution error
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#define SHA204_STATUS_BYTE_COMM ((uint8_t) 0xFF) //! communication error
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/* EEPROM Addresses */
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/* Configuration Zone */
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#define ADDRESS_SN03 0 // SN[0:3] are bytes 0->3 of configuration zone
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#define ADDRESS_RevNum 4 // bytes 4->7 of config zone are RevNum
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#define ADDRESS_SN47 8 // SN[4:7] are bytes 8->11 of config zone
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#define ADDRESS_SN8 12 // SN[8] is byte 12 of config zone, should be 0xEE
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#define ADDRESS_I2CEN 14 // I2C Enable, bit 0 represents I2C enable status
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#define ADDRESS_I2CADD 16 // Defines I2C address of SHA204
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#define ADDRESS_OTPMODE 18 // Sets the One-time-programmable mode
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#define ADDRESS_SELECTOR 19 // Controls writability of Selector
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/* Low level HW access macros */
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/* function calls is not working, as it will have too much overhead */
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#if !defined(ARDUINO_ARCH_AVR) // For everything else than AVR use pinMode / digitalWrite
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#define SHA204_SET_OUTPUT() pinMode(device_pin, OUTPUT)
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#define SHA204_SET_INPUT() pinMode(device_pin, INPUT)
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#define SHA204_POUT_HIGH() digitalWrite(device_pin, HIGH)
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#define SHA204_POUT_LOW() digitalWrite(device_pin, LOW)
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#define SHA204_PIN_READ() digitalRead(device_pin)
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#else
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#define SHA204_SET_INPUT() *device_port_DDR &= ~device_pin
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#define SHA204_SET_OUTPUT() *device_port_DDR |= device_pin
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#define SHA204_POUT_HIGH() *device_port_OUT |= device_pin
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#define SHA204_POUT_LOW() *device_port_OUT &= ~device_pin
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#define SHA204_PIN_READ() (*device_port_IN & device_pin)
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#endif
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class atsha204Class
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{
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private:
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uint8_t device_pin;
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#ifdef ARDUINO_ARCH_AVR
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volatile uint8_t *device_port_DDR, *device_port_OUT, *device_port_IN;
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#endif
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void sha204c_calculate_crc(uint8_t length, uint8_t *data, uint8_t *crc);
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uint8_t sha204c_check_crc(uint8_t *response);
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void swi_set_signal_pin(uint8_t is_high);
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uint8_t swi_receive_bytes(uint8_t count, uint8_t *buffer);
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uint8_t swi_send_bytes(uint8_t count, uint8_t *buffer);
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uint8_t swi_send_byte(uint8_t value);
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uint8_t sha204p_receive_response(uint8_t size, uint8_t *response);
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uint8_t sha204p_wakeup();
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uint8_t sha204p_send_command(uint8_t count, uint8_t * command);
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uint8_t sha204p_sleep();
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uint8_t sha204p_resync(uint8_t size, uint8_t *response);
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public:
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atsha204Class(uint8_t pin); // Constructor
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uint8_t sha204c_wakeup(uint8_t *response);
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uint8_t sha204c_send_and_receive(uint8_t *tx_buffer, uint8_t rx_size, uint8_t *rx_buffer, uint8_t execution_delay, uint8_t execution_timeout);
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uint8_t sha204c_resync(uint8_t size, uint8_t *response);
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uint8_t sha204m_random(uint8_t * tx_buffer, uint8_t * rx_buffer, uint8_t mode);
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uint8_t sha204m_dev_rev(uint8_t *tx_buffer, uint8_t *rx_buffer);
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uint8_t sha204m_read(uint8_t *tx_buffer, uint8_t *rx_buffer, uint8_t zone, uint16_t address);
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uint8_t sha204m_execute(uint8_t op_code, uint8_t param1, uint16_t param2,
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uint8_t datalen1, uint8_t *data1, uint8_t datalen2, uint8_t *data2, uint8_t datalen3, uint8_t *data3,
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uint8_t tx_size, uint8_t *tx_buffer, uint8_t rx_size, uint8_t *rx_buffer);
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uint8_t sha204m_check_parameters(uint8_t op_code, uint8_t param1, uint16_t param2,
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uint8_t datalen1, uint8_t *data1, uint8_t datalen2, uint8_t *data2, uint8_t datalen3, uint8_t *data3,
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uint8_t tx_size, uint8_t *tx_buffer, uint8_t rx_size, uint8_t *rx_buffer);
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uint8_t getSerialNumber(uint8_t *response);
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uint16_t calculateAndUpdateCrc(uint8_t length, uint8_t *data, uint16_t current_crc);
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};
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#endif
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