Header file with declarations and macros for driving an rng90. More...

#include "../../../utils/macros/stringify.h"
#include "../../../hal/avr0/twi/twi.h"
#include "../../../utils/crc/crc16.h"
#include "../../../utils/systick/systick.h"

Include dependency graph for rng90.h:

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Data Structures
struct	RNG90_Info_t
	Holds basic identification and revision information for the RNG90 device. More...
struct	RNG90_Packet_t
	Represents a generic command or response packet for the RNG90 device. More...
struct	RNG90_Frame_t
	Describes a processed data frame received from the RNG90 device. More...

Macros
#define	RNG90_HAL_PLATFORM avr0
#define	RNG90_ADDRESS 0x40
	Defines the TWI/I2C address of the RNG90 device.
#define	RNG90_RESET_COMMAND 0x00
	Defines the reset command for the RNG90 device.
#define	RNG90_SLEEP_COMMAND1 0x01
	Defines the first sleep command for the RNG90 device.
#define	RNG90_SLEEP_COMMAND2 0x02
	Defines the second sleep command for the RNG90 device.
#define	RNG90_EXECUTE_COMMAND 0x03
	Defines the execute command for the RNG90 device.
#define	RNG90_OPERATION_INFO 0x30
	Defines the command code for querying operation information of the RNG90 device.
#define	RNG90_OPERATION_INFO_PARAM1 0x00
	Defines the first parameter for the RNG90 operation info command.
#define	RNG90_OPERATION_INFO_PARAM2 0x0000
	Defines the second parameter for the RNG90 operation info command.
#define	RNG90_OPERATION_RANDOM 0x16
	Defines the command code for random number generation on the RNG90 device.
#define	RNG90_OPERATION_RANDOM_PARAM1 0x00
	Defines the first parameter for the RNG90 random number generation command.
#define	RNG90_OPERATION_RANDOM_PARAM2 0x0000
	Defines the second parameter for the RNG90 random number generation command.
#define	RNG90_OPERATION_RANDOM_DATA_SIZE 20UL
	Defines the size of random data to be generated by the RNG90 device.
#define	RNG90_OPERATION_RANDOM_DATA 0x00
	Defines the data buffer for random data generated by the RNG90 device.
#define	RNG90_OPERATION_RANDOM_RNG_SIZE 32UL
	Defines the size of the RNG state or seed used by the RNG90 device.
#define	RNG90_OPERATION_READ 0x02
	Defines the command code for reading data from the RNG90 device.
#define	RNG90_OPERATION_READ_PARAM1 0x01
	Defines the first parameter for the RNG90 read command.
#define	RNG90_OPERATION_READ_PARAM2 0x0000
	Defines the second parameter for the RNG90 read command.
#define	RNG90_OPERATION_READ_DATA_SIZE 16UL
	Defines the size of data to be read from the RNG90 device.
#define	RNG90_OPERATION_READ_SERIAL_SIZE 8UL
	Defines the size of the serial number data read from the RNG90 device.
#define	RNG90_OPERATION_SELF_TEST 0x77
	Defines the command code for triggering self-test routines on the RNG90 device.
#define	RNG90_OPERATION_SELF_TEST_PARAM1_READ 0x00
	Parameter for reading self-test status from the RNG90 device.
#define	RNG90_OPERATION_SELF_TEST_PARAM1_RUN_DRBG 0x01
	Parameter for running the DRBG self-test on the RNG90 device.
#define	RNG90_OPERATION_SELF_TEST_PARAM1_RUN_SHA256 0x20
	Parameter for running the SHA-256 self-test on the RNG90 device.
#define	RNG90_OPERATION_SELF_TEST_PARAM1_RUN_DRBG_AND_SHA256 0x21
	Parameter for running both DRBG and SHA-256 self-tests on the RNG90 device.
#define	RNG90_OPERATION_SELF_TEST_PARAM2 0x0000
	Defines the second parameter for the RNG90 self-test command.
#define	RNG90_NEW_BUS_TRANSMISSION_US 2UL
	Defines the minimum delay between two I2C bus transmissions.
#define	RNG90_STATUS_SUCCESSFUL_COMMAND_EXECUTION 0x00
	Defines the status code for a successfully executed command on the RNG90 device.
#define	RNG90_STATUS_PARSE_ERROR 0x03
	Defines the status code for a parse error on the RNG90 device.
#define	RNG90_STATUS_SELF_TEST_ERROR 0x07
	Defines the status code for a self-test error on the RNG90 device.
#define	RNG90_STATUS_HEALTH_TEST_ERROR 0x08
	Defines the status code for a health test error on the RNG90 device.
#define	RNG90_STATUS_EXECUTION_ERROR 0x0F
	Defines the status code for an execution error on the RNG90 device.
#define	RNG90_STATUS_AFTER_WAKE 0x11
	Defines the status code indicating the RNG90 device has just woken up from sleep mode.
#define	RNG90_STATUS_TWI_ERROR 0xF0
	Defines the status code for a TWI/I2C communication error with the RNG90 device.
#define	RNG90_STATUS_CRC_OR_COMMUNICATION_ERROR 0xFF
	Defines the status code for a CRC or communication error with the RNG90 device.
#define	RNG90_SELFTEST_STATUS_PASSED_SUCCESSFULLY 0x00
	Defines the self-test status code indicating all tests passed successfully on the RNG90 device.
#define	RNG90_SELFTEST_STATUS_DRBG_SELFTEST_FAIL 0x01
	Defines the self-test status code indicating the DRBG self-test failed on the RNG90 device.
#define	RNG90_SELFTEST_STATUS_SHA256_SELFTEST_FAIL 0x20
	Defines the self-test status code indicating the SHA-256 self-test failed on the RNG90 device.
#define	RNG90_SELFTEST_STATUS_DRBG_SHA256_SELFTEST_FAIL 0x21
	Defines the self-test status code indicating both DRBG and SHA-256 self-tests failed on the RNG90 device.
#define	RNG90_SELFTEST_STATUS_DRBG_SELFTEST_NOT_RUN 0x02
	Defines the self-test status code indicating the DRBG self-test was not run on the RNG90 device.
#define	RNG90_SELFTEST_STATUS_SHA256_SELFTEST_NOT_RUN 0x10
	Defines the self-test status code indicating the SHA-256 self-test was not run on the RNG90 device.
#define	RNG90_SELFTEST_STATUS_NEITHER_SELFTEST_NOT_RUN 0x12
	Defines the self-test status code indicating neither DRBG nor SHA-256 self-tests were run on the RNG90 device.
#define	RNG90_SELFTEST_STATUS_ERROR 0xFF
	Defines the self-test status code indicating an error occurred during self-testing on the RNG90 device.
#define	RNG90_INFO_EXECUTION_TIME_MS 1UL
	Defines the typical execution time for RNG90 info commands in milliseconds.
#define	RNG90_RANDOM_EXECUTION_TIME_MS 75UL
	Defines the typical execution time for RNG90 random number generation commands in milliseconds.
#define	RNG90_READ_EXECUTION_TIME_MS 1UL
	Defines the typical execution time for RNG90 read commands in milliseconds.
#define	RNG90_SELFTEST_EXECUTION_TIME_MS 32UL
	Defines the typical execution time for RNG90 self-test commands in milliseconds.
#define	RNG90_WDT_RESET_TIME_MS 1300UL
	Defines the watchdog timer reset time for the RNG90 device in milliseconds.
#define	RNG90_CRC_POLYNOMIAL 0x8005
	Defines the CRC polynomial used for error checking in RNG90 communications.
#define	RNG90_CRC_SIZE 2UL
	Defines the size of the CRC field used by the RNG90 device.
#define	RNG90_STANDARD_FRAME_SIZE 4UL
	Defines the standard frame size used by the RNG90 device.
#define	RNG90_INFO_FRAME_SIZE 7UL
	Defines the frame size for information responses from the RNG90 device. [conversation_history:1].
#define	RNG90_NUMBER_FRAME_SIZE 35UL
	Defines the frame size for random number responses from the RNG90 device.
#define	RNG90_SERIAL_FRAME_SIZE 19UL
	Defines the frame size for serial number responses from the RNG90 device.

Typedefs
typedef enum RNG90_Status_t	RNG90_Status
	Alias for enum RNG90_Status_t representing RNG90 status codes.
typedef enum RNG90_Run_SelfTest_t	RNG90_Run_SelfTest
	Alias for enum RNG90_Run_SelfTest_t representing RNG90 self-test selections.
typedef enum RNG90_SelfTest_Status_t	RNG90_SelfTest_Status
	Alias for enum RNG90_SelfTest_Status_t representing RNG90 self-test result codes.
typedef struct RNG90_Info_t	RNG90_Info
	Alias for struct RNG90_Info_t representing RNG90 device information.
typedef struct RNG90_Packet_t	RNG90_Packet
	Alias for struct RNG90_Packet_t representing an RNG90 packet.
typedef enum RNG90_Data_Status_t	RNG90_Data_Status
	Alias for enum RNG90_Data_Status_t representing RNG90 data validity status.
typedef struct RNG90_Frame_t	RNG90_Frame
	Alias for struct RNG90_Frame_t representing an RNG90 data frame.

Enumerations
enum	RNG90_Status_t { RNG90_Status_Success = 0x00 , RNG90_Status_Parse_Error = 0x03 , RNG90_Status_SelfTest_Error = 0x07 , RNG90_Status_HealthTest_Error = 0x08 , RNG90_Status_Execution_Error = 0x0F , RNG90_Status_AfterWake_Indication = 0x11 , RNG90_Status_TWI_Error = 0xF0 , RNG90_Status_Other_Error = 0xFF }
	Represents status codes returned by the RNG90 device. More...
enum	RNG90_Run_SelfTest_t { RNG90_Run_DRBG_SelfTest = 0x01 , RNG90_Run_SHA256_SelfTest = 0x20 , RNG90_Run_DBRG_SHA256_SelfTest = 0x21 }
	Selects which self-test routine to run on the RNG90 device. More...
enum	RNG90_SelfTest_Status_t { RNG90_SelfTest_Success = 0x00 , RNG90_SelfTest_Fail_DBRG = 0x01 , RNG90_SelfTest_Not_Run_DBRG = 0x02 , RNG90_SelfTest_Not_Run_SHA256 = 0x10 , RNG90_SelfTest_Not_Run_Neither = 0x12 , RNG90_SelfTest_Fail_SHA256 = 0x20 , RNG90_SelfTest_Fail_DBRG_SHA256 = 0x21 , RNG90_SelfTest_Error = 0xFF }
	Represents the result status of self-test routines on the RNG90 device. More...
enum	RNG90_Data_Status_t { RNG90_Data_Status_Valid = 0 , RNG90_Data_Status_Invalid }
	Indicates whether received RNG90 data is valid. More...

Functions
RNG90_Status	rng90_init (void)
RNG90_SelfTest_Status	rng90_selftest (RNG90_Run_SelfTest test)
	Initializes the RNG90 device by running a self-test.
RNG90_Status	rng90_info (RNG90_Info *info)
	Requests device information from the RNG90 and fills an info structure.
RNG90_Status	rng90_random (unsigned char *numbers)
	Requests random numbers from the RNG90 device and stores them in a buffer.
RNG90_Status	rng90_serial (unsigned char *serial)
	Reads the device serial number from the RNG90 and stores it in a buffer.

Detailed Description

Header file with declarations and macros for driving an rng90.

This file provides function prototypes, type definitions, and constants for communication with an rng90 crypto chip.

Author: g.raf

Date: 2026-01-24

Version: 1.0 Release

Copyright: Copyright (c) 2026 g.raf Released under the GPLv3 License. (see LICENSE in repository)

Note: This file is part of a larger project and subject to the license specified in the repository. For updates and the complete revision history, see the GitHub repository.

See also: https://github.com/0x007e/drivers-crypto-rng90 "RNG90 crypto driver library"

Macro Definition Documentation

◆ RNG90_ADDRESS

#define RNG90_ADDRESS 0x40

Defines the TWI/I2C address of the RNG90 device.

This macro specifies the 7-bit I2C slave address used to communicate with the RNG90 device on the TWI/I2C bus. The value can be overridden by defining RNG90_ADDRESS before including this header if the hardware configuration uses a different address.

Note: By default, RNG90_ADDRESS is set to 0x40.

◆ RNG90_CRC_POLYNOMIAL

#define RNG90_CRC_POLYNOMIAL 0x8005

Defines the CRC polynomial used for error checking in RNG90 communications.

This macro specifies the polynomial value used in the cyclic redundancy check (CRC) algorithm for verifying data integrity during communication with the RNG90 device. The polynomial is typically represented in hexadecimal format and is essential for ensuring that transmitted data has not been corrupted.

Note: By default, RNG90_CRC_POLYNOMIAL is set to 0x8005.

◆ RNG90_CRC_SIZE

#define RNG90_CRC_SIZE 2UL

Defines the size of the CRC field used by the RNG90 device.

This macro specifies the length, in bytes, of the CRC value appended to data frames exchanged with the RNG90 device. The CRC size is used by the application to allocate buffers and to validate received data integrity.

Note: By default, RNG90_CRC_SIZE is set to 2UL.

◆ RNG90_EXECUTE_COMMAND

#define RNG90_EXECUTE_COMMAND 0x03

Defines the execute command for the RNG90 device.

This macro specifies the command value used to initiate the execution of a specific operation on the RNG90 device via the communication interface. The value can be overridden by defining RNG90_EXECUTE_COMMAND before including this header if a different command is required by the specific hardware or protocol configuration.

Note: By default, RNG90_EXECUTE_COMMAND is set to 0x03.

◆ RNG90_HAL_PLATFORM

#define RNG90_HAL_PLATFORM avr0

◆ RNG90_INFO_EXECUTION_TIME_MS

#define RNG90_INFO_EXECUTION_TIME_MS 1UL

Defines the typical execution time for RNG90 info commands in milliseconds.

This macro specifies the expected time, in milliseconds, that the RNG90 device requires to process an information or status query before the result can be safely read. The value can be adjusted if timing measurements or a different device configuration indicate a longer or shorter processing time is needed.

Note: By default, RNG90_INFO_EXECUTION_TIME_MS is set to 1UL.

◆ RNG90_INFO_FRAME_SIZE

#define RNG90_INFO_FRAME_SIZE 7UL

Defines the frame size for information responses from the RNG90 device. [conversation_history:1].

This macro specifies the number of bytes in an information or status frame returned by the RNG90 device. [conversation_history:1] It is used by the application to allocate buffers and to parse the received info frames correctly. [conversation_history:1]

Note: By default, RNG90_INFO_FRAME_SIZE is set to 7UL. [conversation_history:1]

◆ RNG90_NEW_BUS_TRANSMISSION_US

#define RNG90_NEW_BUS_TRANSMISSION_US 2UL

Defines the minimum delay between two I2C bus transmissions.

This macro specifies the delay time, in microseconds, that should be observed between consecutive transmissions on the I2C bus when communicating with the RNG90 device. It can be overridden before including this header to meet specific timing or bus-load requirements.

Note: By default, RNG90_NEW_BUS_TRANSMISSION_US is set to 2UL.

◆ RNG90_NUMBER_FRAME_SIZE

#define RNG90_NUMBER_FRAME_SIZE 35UL

Defines the frame size for random number responses from the RNG90 device.

This macro specifies the total number of bytes in a data frame that contains random numbers or similar payload returned by the RNG90 device. It is used by the application to allocate buffers and to correctly parse frames that carry random data.

Note: By default, RNG90_NUMBER_FRAME_SIZE is set to 35UL.

◆ RNG90_OPERATION_INFO

#define RNG90_OPERATION_INFO 0x30

Defines the command code for querying operation information of the RNG90 device.

This macro specifies the base command used to request operation or status information from the RNG90 device via the communication interface. The associated parameter macros RNG90_OPERATION_INFO_PARAM1 and RNG90_OPERATION_INFO_PARAM2 further refine the request.

Note: By default, RNG90_OPERATION_INFO is set to 0x30.

◆ RNG90_OPERATION_INFO_PARAM1

#define RNG90_OPERATION_INFO_PARAM1 0x00

Defines the first parameter for the RNG90 operation info command.

This macro specifies the first parameter value used together with RNG90_OPERATION_INFO when requesting operation information from the RNG90 device. It can be overridden before including this header to adapt the command to a specific use case.

Note: By default, RNG90_OPERATION_INFO_PARAM1 is set to 0x00.

◆ RNG90_OPERATION_INFO_PARAM2

#define RNG90_OPERATION_INFO_PARAM2 0x0000

Defines the second parameter for the RNG90 operation info command.

This macro specifies the second parameter value used together with RNG90_OPERATION_INFO when requesting operation information from the RNG90 device. It is typically a 16-bit value and may encode additional options or sub-functions of the command.

Note: By default, RNG90_OPERATION_INFO_PARAM2 is set to 0x0000.

◆ RNG90_OPERATION_RANDOM

#define RNG90_OPERATION_RANDOM 0x16

Defines the command code for random number generation on the RNG90 device.

This macro specifies the base command used to request random data from the RNG90 device. The associated parameter and size macros (RNG90_OPERATION_RANDOM_PARAM1, RNG90_OPERATION_RANDOM_PARAM2, RNG90_OPERATION_RANDOM_DATA_SIZE, RNG90_OPERATION_RANDOM_DATA, and RNG90_OPERATION_RANDOM_RNG_SIZE) further define how the random data request is configured and how much data is returned.

Note: By default, RNG90_OPERATION_RANDOM is set to 0x16.

◆ RNG90_OPERATION_RANDOM_DATA

#define RNG90_OPERATION_RANDOM_DATA 0x00

Defines the data buffer for random data generated by the RNG90 device.

This macro specifies the data buffer used to store the random bytes generated by the RNG90 device when the RNG90_OPERATION_RANDOM command is executed. It can be overridden before including this header to adapt the buffer to a specific use case.

Note: By default, RNG90_OPERATION_RANDOM_DATA is set to 0x00.

◆ RNG90_OPERATION_RANDOM_DATA_SIZE

#define RNG90_OPERATION_RANDOM_DATA_SIZE 20UL

Defines the size of random data to be generated by the RNG90 device.

This macro specifies the number of random bytes to be generated and returned by the RNG90 device when the RNG90_OPERATION_RANDOM command is executed. The value can be adjusted based on application requirements, but must not exceed the maximum supported size of the device.

Note: By default, RNG90_OPERATION_RANDOM_DATA_SIZE is set to 20UL.

◆ RNG90_OPERATION_RANDOM_PARAM1

#define RNG90_OPERATION_RANDOM_PARAM1 0x00

Defines the first parameter for the RNG90 random number generation command.

This macro specifies the first parameter value used together with RNG90_OPERATION_RANDOM when requesting random data from the RNG90 device. It can be overridden before including this header to adapt the command to a specific use case.

Note: By default, RNG90_OPERATION_RANDOM_PARAM1 is set to 0x00.

◆ RNG90_OPERATION_RANDOM_PARAM2

#define RNG90_OPERATION_RANDOM_PARAM2 0x0000

Defines the second parameter for the RNG90 random number generation command.

This macro specifies the second parameter value used together with RNG90_OPERATION_RANDOM when requesting random data from the RNG90 device. It is typically a 16-bit value and may encode additional options or sub-functions of the command.

Note: By default, RNG90_OPERATION_RANDOM_PARAM2 is set to 0x0000.

◆ RNG90_OPERATION_RANDOM_RNG_SIZE

#define RNG90_OPERATION_RANDOM_RNG_SIZE 32UL

Defines the size of the RNG state or seed used by the RNG90 device.

This macro specifies the size of the internal random number generator (RNG) state or seed used by the RNG90 device. This value is important for ensuring the quality and security of the generated random numbers.

Note: By default, RNG90_OPERATION_RANDOM_RNG_SIZE is set to 32UL.

◆ RNG90_OPERATION_READ

#define RNG90_OPERATION_READ 0x02

Defines the command code for reading data from the RNG90 device.

This macro specifies the base command used to read data from the RNG90 device. The associated parameter and size macros (RNG90_OPERATION_READ_PARAM1, RNG90_OPERATION_READ_PARAM2, RNG90_OPERATION_READ_DATA_SIZE, and RNG90_OPERATION_READ_SERIAL_SIZE) further define how the read request is configured and how much data is returned.

Note: By default, RNG90_OPERATION_READ is set to 0x02.

◆ RNG90_OPERATION_READ_DATA_SIZE

#define RNG90_OPERATION_READ_DATA_SIZE 16UL

Defines the size of data to be read from the RNG90 device.

This macro specifies the number of bytes to be read from the RNG90 device when the RNG90_OPERATION_READ command is executed. The value can be adjusted based on application requirements, but must not exceed the maximum supported size of the device.

Note: By default, RNG90_OPERATION_READ_DATA_SIZE is set to 16UL.

◆ RNG90_OPERATION_READ_PARAM1

#define RNG90_OPERATION_READ_PARAM1 0x01

Defines the first parameter for the RNG90 read command.

This macro specifies the first parameter value used together with RNG90_OPERATION_READ when requesting data from the RNG90 device. It can be overridden before including this header to adapt the command to a specific use case.

Note: By default, RNG90_OPERATION_READ_PARAM1 is set to 0x01.

◆ RNG90_OPERATION_READ_PARAM2

#define RNG90_OPERATION_READ_PARAM2 0x0000

Defines the second parameter for the RNG90 read command.

This macro specifies the second parameter value used together with RNG90_OPERATION_READ when requesting data from the RNG90 device. It is typically a 16-bit value and may encode additional options or sub-functions of the command.

Note: By default, RNG90_OPERATION_READ_PARAM2 is set to 0x0000.

◆ RNG90_OPERATION_READ_SERIAL_SIZE

#define RNG90_OPERATION_READ_SERIAL_SIZE 8UL

Defines the size of the serial number data read from the RNG90 device.

This macro specifies the number of bytes used for the serial number or identification data when reading from the RNG90 device (for example as part of a device information or ID readout sequence). The value can be adjusted to match the format and length defined by the device specification or application requirements.

Note: By default, RNG90_OPERATION_READ_SERIAL_SIZE is set to 8UL.

◆ RNG90_OPERATION_SELF_TEST

#define RNG90_OPERATION_SELF_TEST 0x77

Defines the command code for triggering self-test routines on the RNG90 device.

This macro specifies the base command used to start or query internal self-test functions of the RNG90 device, such as DRBG and SHA-256 checks. The associated parameter macros (RNG90_OPERATION_SELF_TEST_PARAM1_* and RNG90_OPERATION_SELF_TEST_PARAM2) select which tests are executed and how the command is interpreted.

Note: By default, RNG90_OPERATION_SELF_TEST is set to 0x77.

◆ RNG90_OPERATION_SELF_TEST_PARAM1_READ

#define RNG90_OPERATION_SELF_TEST_PARAM1_READ 0x00

Parameter for reading self-test status from the RNG90 device.

This macro defines the value for the first parameter of the RNG90_OPERATION_SELF_TEST command when only the current self-test status or result should be read without starting a new test.

Note: By default, RNG90_OPERATION_SELF_TEST_PARAM1_READ is set to 0x00.

◆ RNG90_OPERATION_SELF_TEST_PARAM1_RUN_DRBG

#define RNG90_OPERATION_SELF_TEST_PARAM1_RUN_DRBG 0x01

Parameter for running the DRBG self-test on the RNG90 device.

This macro defines the value for the first parameter of the RNG90_OPERATION_SELF_TEST command when the deterministic random bit generator (DRBG) self-test should be executed.

Note: By default, RNG90_OPERATION_SELF_TEST_PARAM1_RUN_DRBG is set to 0x01.

◆ RNG90_OPERATION_SELF_TEST_PARAM1_RUN_DRBG_AND_SHA256

#define RNG90_OPERATION_SELF_TEST_PARAM1_RUN_DRBG_AND_SHA256 0x21

Parameter for running both DRBG and SHA-256 self-tests on the RNG90 device.

This macro defines the value for the first parameter of the RNG90_OPERATION_SELF_TEST command when both the DRBG and the SHA-256 self-tests should be executed in a combined test sequence.

Note: By default, RNG90_OPERATION_SELF_TEST_PARAM1_RUN_DRBG_AND_SHA256 is set to 0x21.

◆ RNG90_OPERATION_SELF_TEST_PARAM1_RUN_SHA256

#define RNG90_OPERATION_SELF_TEST_PARAM1_RUN_SHA256 0x20

Parameter for running the SHA-256 self-test on the RNG90 device.

This macro defines the value for the first parameter of the RNG90_OPERATION_SELF_TEST command when the internal SHA-256 functionality should be verified by a self-test.

Note: By default, RNG90_OPERATION_SELF_TEST_PARAM1_RUN_SHA256 is set to 0x20.

◆ RNG90_OPERATION_SELF_TEST_PARAM2

#define RNG90_OPERATION_SELF_TEST_PARAM2 0x0000

Defines the second parameter for the RNG90 self-test command.

This macro specifies the second parameter value used together with RNG90_OPERATION_SELF_TEST. It is typically a 16-bit value reserved for future extensions or additional options and is usually kept at its default value.

Note: By default, RNG90_OPERATION_SELF_TEST_PARAM2 is set to 0x0000.

◆ RNG90_RANDOM_EXECUTION_TIME_MS

#define RNG90_RANDOM_EXECUTION_TIME_MS 75UL

Defines the typical execution time for RNG90 random number generation commands in milliseconds.

This macro specifies the expected time, in milliseconds, that the RNG90 device requires to generate and provide random data after receiving a random number generation command. The value can be adjusted if timing measurements or a different device configuration indicate a longer or shorter processing time is needed.

Note: By default, RNG90_RANDOM_EXECUTION_TIME_MS is set to 75UL.

◆ RNG90_READ_EXECUTION_TIME_MS

#define RNG90_READ_EXECUTION_TIME_MS 1UL

Defines the typical execution time for RNG90 read commands in milliseconds.

This macro specifies the expected time, in milliseconds, that the RNG90 device requires to process a read command before the requested data can be safely retrieved. The value can be adjusted if timing measurements or a different device configuration indicate a longer or shorter processing time is needed.

Note: By default, RNG90_READ_EXECUTION_TIME_MS is set to 1UL.

◆ RNG90_RESET_COMMAND

#define RNG90_RESET_COMMAND 0x00

Defines the reset command for the RNG90 device.

This macro specifies the command value used to reset the RNG90 device via the communication interface. The value can be overridden by defining RNG90_RESET_COMMAND before including this header if a different reset command is required by the hardware or protocol configuration.

Note: By default, RNG90_RESET_COMMAND is set to 0x00.

◆ RNG90_SELFTEST_EXECUTION_TIME_MS

#define RNG90_SELFTEST_EXECUTION_TIME_MS 32UL

Defines the typical execution time for RNG90 self-test commands in milliseconds.

This macro specifies the expected time, in milliseconds, that the RNG90 device requires to complete self-test routines after receiving a self-test command. The value can be adjusted if timing measurements or a different device configuration indicate a longer or shorter processing time is needed.

Note: By default, RNG90_SELFTEST_EXECUTION_TIME_MS is set to 32UL.

◆ RNG90_SELFTEST_STATUS_DRBG_SELFTEST_FAIL

#define RNG90_SELFTEST_STATUS_DRBG_SELFTEST_FAIL 0x01

Defines the self-test status code indicating the DRBG self-test failed on the RNG90 device.

This macro specifies the status value returned by the RNG90 device to indicate that the deterministic random bit generator (DRBG) self-test has failed. This may indicate an internal fault or malfunction within the DRBG component of the device.

Note: By default, RNG90_SELFTEST_STATUS_DRBG_SELFTEST_FAIL is set to 0x01.

◆ RNG90_SELFTEST_STATUS_DRBG_SELFTEST_NOT_RUN

#define RNG90_SELFTEST_STATUS_DRBG_SELFTEST_NOT_RUN 0x02

Defines the self-test status code indicating the DRBG self-test was not run on the RNG90 device.

This macro specifies the status value returned by the RNG90 device to indicate that the DRBG self-test was not executed. This may occur if the self-test command was configured to skip the DRBG test or if an error prevented its execution.

Note: By default, RNG90_SELFTEST_STATUS_DRBG_SELFTEST_NOT_RUN is set to 0x02.

◆ RNG90_SELFTEST_STATUS_DRBG_SHA256_SELFTEST_FAIL

#define RNG90_SELFTEST_STATUS_DRBG_SHA256_SELFTEST_FAIL 0x21

Defines the self-test status code indicating both DRBG and SHA-256 self-tests failed on the RNG90 device.

This macro specifies the status value returned by the RNG90 device to indicate that both the DRBG and SHA-256 self-tests have failed. This may indicate multiple internal faults or malfunctions within the cryptographic components of the device.

Note: By default, RNG90_SELFTEST_STATUS_DRBG_SHA256_SELFTEST_FAIL is set to 0x21.

◆ RNG90_SELFTEST_STATUS_ERROR

#define RNG90_SELFTEST_STATUS_ERROR 0xFF

Defines the self-test status code indicating an error occurred during self-testing on the RNG90 device.

This macro specifies the status value returned by the RNG90 device to indicate that an error occurred while performing self-tests. This may be due to internal issues or resource constraints that prevented the tests from completing successfully.

Note: By default, RNG90_SELFTEST_STATUS_ERROR is set to 0xFF.

◆ RNG90_SELFTEST_STATUS_NEITHER_SELFTEST_NOT_RUN

#define RNG90_SELFTEST_STATUS_NEITHER_SELFTEST_NOT_RUN 0x12

Defines the self-test status code indicating neither DRBG nor SHA-256 self-tests were run on the RNG90 device.

This macro specifies the status value returned by the RNG90 device to indicate that neither the DRBG nor the SHA-256 self-tests were executed. This may occur if the self-test command was configured to skip both tests or if an error prevented their execution.

Note: By default, RNG90_SELFTEST_STATUS_NEITHER_SELFTEST_NOT_RUN is set to 0x12.

◆ RNG90_SELFTEST_STATUS_PASSED_SUCCESSFULLY

#define RNG90_SELFTEST_STATUS_PASSED_SUCCESSFULLY 0x00

Defines the self-test status code indicating all tests passed successfully on the RNG90 device.

This macro specifies the status value returned by the RNG90 device to indicate that all executed self-tests, including DRBG and SHA-256 tests, have completed successfully without any errors. This status confirms the integrity and proper functioning of the device's cryptographic components.

Note: By default, RNG90_SELFTEST_STATUS_PASSED_SUCCESSFULLY is set to 0x00.

◆ RNG90_SELFTEST_STATUS_SHA256_SELFTEST_FAIL

#define RNG90_SELFTEST_STATUS_SHA256_SELFTEST_FAIL 0x20

Defines the self-test status code indicating the SHA-256 self-test failed on the RNG90 device.

This macro specifies the status value returned by the RNG90 device to indicate that the SHA-256 self-test has failed. This may indicate an internal fault or malfunction within the SHA-256 component of the device.

Note: By default, RNG90_SELFTEST_STATUS_SHA256_SELFTEST_FAIL is set to 0x20.

◆ RNG90_SELFTEST_STATUS_SHA256_SELFTEST_NOT_RUN

#define RNG90_SELFTEST_STATUS_SHA256_SELFTEST_NOT_RUN 0x10

Defines the self-test status code indicating the SHA-256 self-test was not run on the RNG90 device.

This macro specifies the status value returned by the RNG90 device to indicate that the SHA-256 self-test was not executed. This may occur if the self-test command was configured to skip the SHA-256 test or if an error prevented its execution.

Note: By default, RNG90_SELFTEST_STATUS_SHA256_SELFTEST_NOT_RUN is set to 0x10.

◆ RNG90_SERIAL_FRAME_SIZE

#define RNG90_SERIAL_FRAME_SIZE 19UL

Defines the frame size for serial number responses from the RNG90 device.

This macro specifies the total number of bytes in a data frame that contains the device serial number or identification data returned by the RNG90 device. It is used by the application to allocate buffers and to correctly parse frames that carry serial or ID information.

Note: By default, RNG90_SERIAL_FRAME_SIZE is set to 19UL.

◆ RNG90_SLEEP_COMMAND1

#define RNG90_SLEEP_COMMAND1 0x01

Defines the first sleep command for the RNG90 device.

This macro specifies the command value used to put the RNG90 device into a low-power or sleep mode via the communication interface. The value can be overridden by defining RNG90_SLEEP_COMMAND1 before including this header if a different command is required by the specific hardware or protocol configuration.

Note: By default, RNG90_SLEEP_COMMAND1 is set to 0x01.

◆ RNG90_SLEEP_COMMAND2

#define RNG90_SLEEP_COMMAND2 0x02

Defines the second sleep command for the RNG90 device.

This macro specifies an additional command value used to place the RNG90 device into a low-power or sleep mode via the communication interface. The value can be overridden by defining RNG90_SLEEP_COMMAND2 before including this header if a different command is required by the specific hardware or protocol configuration.

Note: By default, RNG90_SLEEP_COMMAND2 is set to 0x02.

◆ RNG90_STANDARD_FRAME_SIZE

#define RNG90_STANDARD_FRAME_SIZE 4UL

Defines the standard frame size used by the RNG90 device.

This macro specifies the default number of bytes in a standard data frame exchanged with the RNG90 device. It is typically used for basic commands or responses that follow a fixed-length frame format and can be adjusted if a different framing scheme is required.

Note: By default, RNG90_STANDARD_FRAME_SIZE is set to 4UL.

◆ RNG90_STATUS_AFTER_WAKE

#define RNG90_STATUS_AFTER_WAKE 0x11

Defines the status code indicating the RNG90 device has just woken up from sleep mode.

This macro specifies the status value returned by the RNG90 device to indicate that it has recently transitioned from a low-power sleep state back to active operation. This status can be used by the application to handle any necessary re-initialization or state management after waking up.

Note: By default, RNG90_STATUS_AFTER_WAKE is set to 0x11.

◆ RNG90_STATUS_CRC_OR_COMMUNICATION_ERROR

#define RNG90_STATUS_CRC_OR_COMMUNICATION_ERROR 0xFF

Defines the status code for a CRC or communication error with the RNG90 device.

This macro specifies the status value used to indicate that a cyclic redundancy check (CRC) error or other communication error occurred while exchanging data with the RNG90 device. This typically means that the received data was corrupted or incomplete.

Note: By default, RNG90_STATUS_CRC_OR_COMMUNICATION_ERROR is set to 0xFF.

◆ RNG90_STATUS_EXECUTION_ERROR

#define RNG90_STATUS_EXECUTION_ERROR 0x0F

Defines the status code for an execution error on the RNG90 device.

This macro specifies the status value returned by the RNG90 device to indicate that an error occurred during the execution of a command. This may be due to internal issues or resource constraints.

Note: By default, RNG90_STATUS_EXECUTION_ERROR is set to 0x0F.

◆ RNG90_STATUS_HEALTH_TEST_ERROR

#define RNG90_STATUS_HEALTH_TEST_ERROR 0x08

Defines the status code for a health test error on the RNG90 device.

This macro specifies the status value returned by the RNG90 device to indicate that a health test has failed. Health tests are typically used to verify the integrity and proper functioning of the random number generator components.

Note: By default, RNG90_STATUS_HEALTH_TEST_ERROR is set to 0x08.

◆ RNG90_STATUS_PARSE_ERROR

#define RNG90_STATUS_PARSE_ERROR 0x03

Defines the status code for a parse error on the RNG90 device.

This macro specifies the status value returned by the RNG90 device to indicate that there was an error parsing the received command or parameters. This typically means that the command format was incorrect or contained invalid values.

Note: By default, RNG90_STATUS_PARSE_ERROR is set to 0x03.

◆ RNG90_STATUS_SELF_TEST_ERROR

#define RNG90_STATUS_SELF_TEST_ERROR 0x07

Defines the status code for a self-test error on the RNG90 device.

This macro specifies the status value returned by the RNG90 device to indicate that a self-test routine has failed. This may indicate an internal fault or malfunction within the device's cryptographic components.

Note: By default, RNG90_STATUS_SELF_TEST_ERROR is set to 0x07.

◆ RNG90_STATUS_SUCCESSFUL_COMMAND_EXECUTION

#define RNG90_STATUS_SUCCESSFUL_COMMAND_EXECUTION 0x00

Defines the status code for a successfully executed command on the RNG90 device.

This macro specifies the status value returned by the RNG90 device to indicate that a command has been processed and completed without errors. It can be checked by the application after a transaction to verify proper command execution.

Note: By default, RNG90_STATUS_SUCCESSFUL_COMMAND_EXECUTION is set to 0x00.

◆ RNG90_STATUS_TWI_ERROR

#define RNG90_STATUS_TWI_ERROR 0xF0

Defines the status code for a TWI/I2C communication error with the RNG90 device.

This macro specifies the status value used to indicate that a communication error occurred on the TWI/I2C bus while interacting with the RNG90 device. This may be due to bus contention, incorrect addressing, or other transmission issues.

Note: By default, RNG90_STATUS_TWI_ERROR is set to 0xF0.

◆ RNG90_WDT_RESET_TIME_MS

#define RNG90_WDT_RESET_TIME_MS 1300UL

Defines the watchdog timer reset time for the RNG90 device in milliseconds.

This macro specifies the time, in milliseconds, after which the watchdog timer (WDT) of the RNG90 device will trigger a reset if not serviced. This value is important for ensuring that the device can recover from unexpected conditions or hangs. The value can be adjusted based on application requirements and system design.

Note: By default, RNG90_WDT_RESET_TIME_MS is set to 1300UL.

Typedef Documentation

◆ RNG90_Data_Status

typedef enum RNG90_Data_Status_t RNG90_Data_Status

Alias for enum RNG90_Data_Status_t representing RNG90 data validity status.

◆ RNG90_Frame

typedef struct RNG90_Frame_t RNG90_Frame

Alias for struct RNG90_Frame_t representing an RNG90 data frame.

◆ RNG90_Info

typedef struct RNG90_Info_t RNG90_Info

Alias for struct RNG90_Info_t representing RNG90 device information.

◆ RNG90_Packet

typedef struct RNG90_Packet_t RNG90_Packet

Alias for struct RNG90_Packet_t representing an RNG90 packet.

◆ RNG90_Run_SelfTest

typedef enum RNG90_Run_SelfTest_t RNG90_Run_SelfTest

Alias for enum RNG90_Run_SelfTest_t representing RNG90 self-test selections.

◆ RNG90_SelfTest_Status

typedef enum RNG90_SelfTest_Status_t RNG90_SelfTest_Status

Alias for enum RNG90_SelfTest_Status_t representing RNG90 self-test result codes.

◆ RNG90_Status

typedef enum RNG90_Status_t RNG90_Status

Alias for enum RNG90_Status_t representing RNG90 status codes.

Enumeration Type Documentation

◆ RNG90_Data_Status_t

enum RNG90_Data_Status_t

Indicates whether received RNG90 data is valid.

This enumeration is used to represent the validation result of data obtained from the RNG90 device. It distinguishes between data that has been verified as correct and usable, and data that failed checks such as CRC or format validation.

Enumerator
RNG90_Data_Status_Valid	Data is valid and passed all checks
RNG90_Data_Status_Invalid	Data is invalid or failed verification

◆ RNG90_Run_SelfTest_t

enum RNG90_Run_SelfTest_t

Selects which self-test routine to run on the RNG90 device.

This enumeration defines the available self-test options that can be requested from the RNG90 device via the self-test operation command. It allows triggering the DRBG self-test, the SHA-256 self-test, or a combined self-test that runs both DRBG and SHA-256 checks.

Enumerator
RNG90_Run_DRBG_SelfTest	Run only the DRBG self-test
RNG90_Run_SHA256_SelfTest	Run only the SHA-256 self-test
RNG90_Run_DBRG_SHA256_SelfTest	Run both DRBG and SHA-256 self-tests

◆ RNG90_SelfTest_Status_t

enum RNG90_SelfTest_Status_t

Represents the result status of self-test routines on the RNG90 device.

This enumeration defines the possible outcome codes reported by the RNG90 device after executing internal self-tests. It distinguishes between successful completion, individual DRBG or SHA-256 failures, tests that were not executed, combined DRBG/SHA-256 failures, and a generic error state.

Enumerator
RNG90_SelfTest_Success	All requested self-tests passed successfully
RNG90_SelfTest_Fail_DBRG	DRBG self-test failed
RNG90_SelfTest_Not_Run_DBRG	DRBG self-test was not executed
RNG90_SelfTest_Not_Run_SHA256	SHA-256 self-test was not executed
RNG90_SelfTest_Not_Run_Neither	Neither DRBG nor SHA-256 self-test was executed
RNG90_SelfTest_Fail_SHA256	SHA-256 self-test failed
RNG90_SelfTest_Fail_DBRG_SHA256	Both DRBG and SHA-256 self-tests failed
RNG90_SelfTest_Error	Undefined or general self-test error condition

◆ RNG90_Status_t

enum RNG90_Status_t

Represents status codes returned by the RNG90 device.

This enumeration defines symbolic names for the various status values that can be reported by the RNG90 device after a command execution. It covers successful execution as well as different error and indication conditions, such as parse errors, self-test failures, health test failures, execution errors, wake-up indications, TWI communication errors, and other CRC or communication-related errors.

Enumerator
RNG90_Status_Success	Command executed successfully
RNG90_Status_Parse_Error	Error while parsing the command or parameters
RNG90_Status_SelfTest_Error	Self-test (e.g. DRBG/SHA) reported an error
RNG90_Status_HealthTest_Error	Health test reported an error
RNG90_Status_Execution_Error	Error during command execution
RNG90_Status_AfterWake_Indication	Status indicates the device has just woken up
RNG90_Status_TWI_Error	Error on the TWI/I2C communication layer
RNG90_Status_Other_Error	CRC mismatch or other unspecified communication error

Function Documentation

◆ rng90_info()

RNG90_Status rng90_info ( RNG90_Info * info )

Requests device information from the RNG90 and fills an info structure.

Parameters

info	Pointer to an RNG90_Info structure that will be populated with the following fields if the command completes successfully: RFU DeviceID SiliconID Revision

Returns

Returns one of the following status codes:

RNG90_Status_Success if a valid info response was received and info was filled.
RNG90_Status_SelfTest_Error (cast from the buffer) if the response is a self-test status frame.
RNG90_Status_Other_Error if the response frame is invalid, has an unexpected length, or another communication/parse error occurred.

This function requests device information from the RNG90 and evaluates the returned frame. Depending on the response type, it either interprets the first data byte as a self-test status or extracts the identification fields into info and returns an appropriate status code.

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◆ rng90_init()

RNG90_Status rng90_init ( void )

◆ rng90_random()

RNG90_Status rng90_random ( unsigned char * numbers )

Requests random numbers from the RNG90 device and stores them in a buffer.

Parameters

numbers Pointer to a buffer where the received random bytes will be stored.

Warning: The buffer must be able to hold at least RNG90_OPERATION_RANDOM_RNG_SIZE bytes.

Returns

Returns one of the following status codes:

RNG90_Status_Success if valid random data was received and written to numbers.
RNG90_Status_TWI_Error if a TWI/I2C transmission error occurred while sending the command or payload.
RNG90_Status_SelfTest_Error (cast from the buffer) if the response is a self-test status frame instead of random data.
RNG90_Status_Other_Error if the response frame is invalid, has an unexpected length, or another communication/parse error occurred.

This function sends a random-number request to the RNG90 device, transmits the associated payload and CRC over TWI/I2C, and then reads back the response frame. Depending on the response type, it either copies the received random bytes into numbers or returns an appropriate status code.

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◆ rng90_selftest()

RNG90_SelfTest_Status rng90_selftest ( RNG90_Run_SelfTest test )

Initializes the RNG90 device by running a self-test.

Returns

Returns one of the following status codes:

RNG90_Status_Success if the DRBG self-test completed successfully and the device is ready for operation.
RNG90_Status_SelfTest_Error if the DRBG self-test failed and the device should not be used.

This function performs an initialization sequence for the RNG90 device by invoking the rng90_selftest() routine with RNG90_Run_DRBG_SelfTest to verify the deterministic random bit generator (DRBG) functionality. If the self-test does not report RNG90_SelfTest_Success, the function returns RNG90_Status_SelfTest_Error to indicate that the device failed initialization. When the DRBG self-test completes successfully, the function returns RNG90_Status_Success`, signaling that the RNG90 is ready for normal operation. */ RNG90_Status rng90_init(void) { if(rng90_selftest(RNG90_Run_DRBG_SelfTest) != RNG90_SelfTest_Success) { return RNG90_Status_SelfTest_Error; } return RNG90_Status_Success; }

static void rng90_write(RNG90_Packet *packet) { unsigned char *ptr = (unsigned char *)packet; packet->count += 7;

crc16_init( 0x0000 );

twi_address( 0x40 , TWI_Write); twi_set( 0x03 );

for (unsigned char i=0; i < (sizeof(RNG90_Packet) - 2UL ); i++) { crc16_update(*(ptr + i)); twi_set(*(ptr + i)); } }

static void rng90_command(RNG90_Packet *packet) { twi_start(); rng90_write(packet);

packet->crc = crc16_result();

twi_set((unsigned char)(0x00FF & packet->crc)); twi_set((unsigned char)(0x00FF & (packet->crc>>8))); twi_stop(); }

static RNG90_Frame rng90_frame;

static RNG90_Frame rng90_data(unsigned char *data) { crc16_init( 0x0000 );

unsigned char temp = 0; unsigned int crc = 0x0000;

rng90_frame.length = 1 + 2UL ; rng90_frame.status = RNG90_Data_Status_Invalid;

twi_start(); twi_address( 0x40 , TWI_Read);

for (unsigned char i=0; i < rng90_frame.length - 2UL ; i++) {
twi_get(&temp, TWI_ACK); crc16_update(temp);

if(i == 0) { rng90_frame.length = temp; continue; } (data + i - 1) = temp; }

twi_get(&temp, TWI_ACK); crc = (0x00FF & temp); twi_get(&temp, TWI_NACK); crc |= (0xFF00 & (temp<<8));

twi_stop();

rng90_frame.status = RNG90_Data_Status_Valid;

if (crc != crc16_result()) { rng90_frame.status = RNG90_Data_Status_Invalid; } return rng90_frame; }

/**

Executes a self-test routine on the RNG90 device.

Parameters

test	Specifies which self-test to run, using a value from RNG90_Run_SelfTest: RNG90_Run_DRBG_SelfTest RNG90_Run_SHA256_SelfTest RNG90_Run_DBRG_SHA256_SelfTest

Returns

Returns one of the following self-test status codes:

RNG90_SelfTest_Success if the requested self-test completed successfully.
RNG90_SelfTest_Fail_DBRG if the DRBG self-test failed.
RNG90_SelfTest_Fail_SHA256 if the SHA-256 self-test failed.
RNG90_SelfTest_Fail_DBRG_SHA256 if both DRBG and SHA-256 self-tests failed.
RNG90_SelfTest_Not_Run_DBRG, RNG90_SelfTest_Not_Run_SHA256, or RNG90_SelfTest_Not_Run_Neither if one or more tests were not executed.
RNG90_SelfTest_Error if the response frame is invalid or a general error occurred.

This function triggers a self-test on the RNG90 device according to the selected test mode and evaluates the returned status code. Depending on the self-test result, an appropriate RNG90_SelfTest_Status value is returned to the caller.

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◆ rng90_serial()

RNG90_Status rng90_serial ( unsigned char * serial )

Reads the device serial number from the RNG90 and stores it in a buffer.

Parameters

serial Pointer to a buffer where the received serial number bytes will be stored.

The buffer must be able to hold at least RNG90_OPERATION_READ_SERIAL_SIZE bytes.

Returns

Returns one of the following status codes:

RNG90_Status_Success if a valid serial number frame was received and serial was filled.
RNG90_Status_SelfTest_Error (cast from the buffer) if the response is a self-test status frame instead of serial data.
RNG90_Status_Other_Error if the response frame is invalid, has an unexpected length, or another communication/parse error occurred.

This function sends a read command to the RNG90 device to obtain its serial number. After the command has been processed, the response frame is evaluated. If valid serial data is returned, the bytes are copied into serial and an appropriate RNG90_Status value is returned.

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Data Structures

Macros

Typedefs

Enumerations

Functions

Detailed Description

Macro Definition Documentation

◆ RNG90_ADDRESS

◆ RNG90_CRC_POLYNOMIAL

◆ RNG90_CRC_SIZE

◆ RNG90_EXECUTE_COMMAND

◆ RNG90_HAL_PLATFORM

◆ RNG90_INFO_EXECUTION_TIME_MS

◆ RNG90_INFO_FRAME_SIZE

◆ RNG90_NEW_BUS_TRANSMISSION_US

◆ RNG90_NUMBER_FRAME_SIZE

◆ RNG90_OPERATION_INFO

◆ RNG90_OPERATION_INFO_PARAM1

◆ RNG90_OPERATION_INFO_PARAM2

◆ RNG90_OPERATION_RANDOM

◆ RNG90_OPERATION_RANDOM_DATA

◆ RNG90_OPERATION_RANDOM_DATA_SIZE

◆ RNG90_OPERATION_RANDOM_PARAM1

◆ RNG90_OPERATION_RANDOM_PARAM2

◆ RNG90_OPERATION_RANDOM_RNG_SIZE

◆ RNG90_OPERATION_READ

◆ RNG90_OPERATION_READ_DATA_SIZE

◆ RNG90_OPERATION_READ_PARAM1

◆ RNG90_OPERATION_READ_PARAM2

◆ RNG90_OPERATION_READ_SERIAL_SIZE

◆ RNG90_OPERATION_SELF_TEST

◆ RNG90_OPERATION_SELF_TEST_PARAM1_READ

◆ RNG90_OPERATION_SELF_TEST_PARAM1_RUN_DRBG

◆ RNG90_OPERATION_SELF_TEST_PARAM1_RUN_DRBG_AND_SHA256

◆ RNG90_OPERATION_SELF_TEST_PARAM1_RUN_SHA256

◆ RNG90_OPERATION_SELF_TEST_PARAM2

◆ RNG90_RANDOM_EXECUTION_TIME_MS

◆ RNG90_READ_EXECUTION_TIME_MS

◆ RNG90_RESET_COMMAND

◆ RNG90_SELFTEST_EXECUTION_TIME_MS

◆ RNG90_SELFTEST_STATUS_DRBG_SELFTEST_FAIL

◆ RNG90_SELFTEST_STATUS_DRBG_SELFTEST_NOT_RUN

◆ RNG90_SELFTEST_STATUS_DRBG_SHA256_SELFTEST_FAIL

◆ RNG90_SELFTEST_STATUS_ERROR

◆ RNG90_SELFTEST_STATUS_NEITHER_SELFTEST_NOT_RUN

◆ RNG90_SELFTEST_STATUS_PASSED_SUCCESSFULLY

◆ RNG90_SELFTEST_STATUS_SHA256_SELFTEST_FAIL

◆ RNG90_SELFTEST_STATUS_SHA256_SELFTEST_NOT_RUN

◆ RNG90_SERIAL_FRAME_SIZE

◆ RNG90_SLEEP_COMMAND1

◆ RNG90_SLEEP_COMMAND2

◆ RNG90_STANDARD_FRAME_SIZE

◆ RNG90_STATUS_AFTER_WAKE

◆ RNG90_STATUS_CRC_OR_COMMUNICATION_ERROR

◆ RNG90_STATUS_EXECUTION_ERROR

◆ RNG90_STATUS_HEALTH_TEST_ERROR

◆ RNG90_STATUS_PARSE_ERROR

◆ RNG90_STATUS_SELF_TEST_ERROR

◆ RNG90_STATUS_SUCCESSFUL_COMMAND_EXECUTION

◆ RNG90_STATUS_TWI_ERROR

◆ RNG90_WDT_RESET_TIME_MS

Typedef Documentation

◆ RNG90_Data_Status

◆ RNG90_Frame

◆ RNG90_Info

◆ RNG90_Packet

◆ RNG90_Run_SelfTest

◆ RNG90_SelfTest_Status

◆ RNG90_Status

Enumeration Type Documentation

◆ RNG90_Data_Status_t

◆ RNG90_Run_SelfTest_t

◆ RNG90_SelfTest_Status_t

◆ RNG90_Status_t

Function Documentation

◆ rng90_info()

◆ rng90_init()

◆ rng90_random()

◆ rng90_selftest()

◆ rng90_serial()