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Question about Flash Programming Algorithms

shihwen chou

Dear all,

   I am studying document about  Flash Programming Algorithms.

There is a sentence as below,

The following diagrams show how the functions of the Flash Programming Algorithms are executed by a development tool.

And the erase flow as below,

I have a little confused about 1st and 2nd steps of  the erase flow, please help.

1. Load Flash Algorithm in RAM => Is it mean to load the flash algorithm into the RAM of chip?

2. Execute "Init" =>Who executes the "Init" function of  flash algorithm?  ARM-Mx?  development tool ?

Thanks for your any help.

BR,

Eddie

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  • 0 Arm Employee Badge in reply to shihwen chou

    Hi Eddie,

    yes, your assumptions are correct.

    A description of Flash Programming algorithms can be found here: https://arm-software.github.io/CMSIS_5/Pack/html/flashAlgorithm.html

    The Flash Programming Algorithms are intended to run within the RAM of the device to program. It is similar to 'In Application Programming'. The code must be compiled 'Position independent' and for the device (Cortex-Mx) you want to program.
    The 'Development Tool' acts as control instance. It does the download of the functions and the data, starts the functions, does address calculations and more.

    A good idea is to take a look at the Flash Programming Algorithms provided with the various CMSIS Device packs. Most of the algorithms exist as uVision project including source code.

Reply
  • 0 Arm Employee Badge in reply to shihwen chou

    Hi Eddie,

    yes, your assumptions are correct.

    A description of Flash Programming algorithms can be found here: https://arm-software.github.io/CMSIS_5/Pack/html/flashAlgorithm.html

    The Flash Programming Algorithms are intended to run within the RAM of the device to program. It is similar to 'In Application Programming'. The code must be compiled 'Position independent' and for the device (Cortex-Mx) you want to program.
    The 'Development Tool' acts as control instance. It does the download of the functions and the data, starts the functions, does address calculations and more.

    A good idea is to take a look at the Flash Programming Algorithms provided with the various CMSIS Device packs. Most of the algorithms exist as uVision project including source code.

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