UM1759 datasheet(31/50 Pages) STMICROELECTRONICS

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UM1759

Wireless M-Bus firmware APIs

4.1.3

AES128.c: functions description

The list of encryption layer (which is also part of application layer) routines is given below as

described in aes128_ctr.c.

Description

This function will put the radio in standby state

Return type

None

Table 38. WM-Bus application get EEPROM entries routine

Name

WMBus_AppliGetEEpromEntries

Parameters

None

Description

This function will read and send all meter entry in EEPROM of concentrator

database to GUI

Return type

uint8_t*: ptr to the buffer returned

Table 39. WM-Bus application write meter database in EEPROM routine

Name

Write_Meter_DB_EEPROM

Parameters

None

Description

This function will write meter database to EEPROM

Return type

uint8_t*: ptr to the buffer returned

Table 37. WM-Bus application radio stand-by routine

Table 40. WM-Bus AES decryption routine

Name

AES_decrypt

Parameters

u32* input_pointer, u32* output_pointer

u32* expkey: decryption key

Description

This routine Decrypts one block of 16 bytes

Return type

None

Table 41. WM-Bus AES encryption routine

Name

AES_encrypt

Parameters

u32* input_pointer, u32* output_pointer

u32* expkey: encryption key

Description

This routine Encrypts one block of 16 bytes

Return type

None

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