AN4035 datasheet(40/42 Pages) STMICROELECTRONICS

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Creating the Flash programming tool

AN4035

40/41

Doc ID 022669 Rev 2

6.3

Functional division of the external tool

Before creating the external tool for Flash programming, thought should be given to how the

software should be divided to meet the tool’s functional requirements. The following list

gives an example of a simple functional division of the software:

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OnCE TAP controller enable, Section 3.1: Enabling the OnCE TAP controller.

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OnCE register read, Section 3.2: OnCE register access.

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OnCE register write, Section 3.2: OnCE register access.

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OnCE status register read, Section 3.4: OnCE status register.

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Debug mode during reset, Section 3.5: Entering debug mode during reset.

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Single step, Section 3.8: Single step.

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Exit from debug mode, Section 3.9: Exit from debug mode to normal execution.

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Write GPR, Section 3.10: GPR access.

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Read GPR, Section 3.10: GPR access.

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Write SPR, Section 3.11: SPR access.

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Read SPR, Section 3.11: SPR access.

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OnCE memory read, Section 3.12: OnCE memory access.

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OnCE memory write, Section 3.12: OnCE memory access.

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Nexus3 single write, Section 4.2: Single memory write access.

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Nexus3 burst write, Section 4.3: Burst block memory write access.

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Nexus3 single read, Section 4.4: Single memory read access.

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Nexus3 burst read, Section 4.5: Burst block memory read access.

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MMU initialization, Section 5.2: Setting up the memory management unit.

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Internal SRAM initialization,Section 5.1: Internal SRAM initialization.

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S-record parser and loader.

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Debug and driver initialization, Section 6.2.1: Debug and driver initialization.

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Flash initialization, Section 6.2.2: FlashInit.

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Flash block lock initialization, Section 6.2.3: SetLock.

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Flash erase, Section 6.2.4: FlashErase.

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Flash program, Section 6.2.5: FlashProgram.

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