Maxim-integrated 73S12xxF Software Manual do Utilizador descarregar pdf (Página 68)

73S12xxF Software User Guide UG_12xxF_016

68 Rev. 1.50

Application/Host

Received hex

record from

App/Host

Good record

(good CRC)?

Send 'F' to App/

Host

Address >

0x01FF

Send 'P' to App/

Host

Program Flash

with Hex record

End of File?

Yes

Jump to new app.

Start

Flash

Prog.

Yes

Start

Flash

Down

Load

Configure COM port

@ 115,200 baud,

8N1, Xon/Xoff

Open Hex File

Yes

End of file?

Read Hex Record

Send Record to

LAPI

Prompt User to

terminate App.

LAPI Responds

= ?

Retry

exhausted

'P'

'F'

Yes

LAPI-*.lib

Ignore Record

Configure COM port

@ 115,200 baud,

8N1, Xon/Xoff

Figure 10: FLASH Download and Programming Process

Boot()

Purpose Invoke the Boot Loader function to start reprogramming of Flash.

Synopsis void Boot ( U16 PassCode );

Parameters PassCode: Input parameter

Specifies the 2-byte passcode.

Return Codes FALSE if the PassCode fails validation.

Once an application calls the Boot function, and the PassCode is validated, control will not be returned.

CheckPassCode ()

Purpose Validate the PassCode for Security Mode management, PassCode management and

the Boot function.

Synopsis Bbool CheckPassCode ( U16 PassCode );

Parameters PassCode: Input parameter

Specifies the 2-byte passcode.

Return Codes TRUE if the PassCode is validated.

FALSE if the PassCode doesn’t match with the passcode stored in the Boot Loader

code space.

1 2 ... 63 64 65 66 67 68 69 70 71 72 73 ... 92 93

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