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techfreak
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techfreak
Asked: July 7, 2022In:
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For my project I am using dot matrix displays for which I want to store the font data and some images which are pre defined, as code flash memory area, All this display data takes up a lot of RAM, is ...Read more

For my project I am using dot matrix displays for which I want to store the font data and some images which are pre defined, as code flash memory area,

All this display data takes up a lot of RAM, is there any specific library or method to use large arrays as part of program memory.

MCU: R5F100LGAFB

IDE:   CS+ For CC (RL78)

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program memoryrenesasrl78
  1. [Deleted User]

    Code-flash would have to be addressed as "far" data memory, I might recommend using the IAR compiler as it handles the "huge" memory qualifier that allows "far" array accesses across 64KB boundaries.  Or you could use CC-RL with a simple assembly routine to handle the "huge" memory references.

    Code-flash would have to be addressed as “far” data memory, I might recommend using the IAR compiler as it handles the “huge” memory qualifier that allows “far” array accesses across 64KB boundaries.  Or you could use CC-RL with a simple assembly routine to handle the “huge” memory references.

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vsharma
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vsharma
Asked: July 4, 2022In:
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What is the major difference between single and continuous transfer mode w.r.t to performance, as in both the cases for every byte ISR is served?

What is the major difference between single and continuous transfer mode w.r.t to performance, as in both the cases for every byte ISR is served?

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bytecontinuous transfer modeg13isrrl78single transfer
  1. pallavi sharma

    According to the RK78/G13 User's Manual, "Transfer end interrupt (in single-transfer mode) or buffer empty interrupt (in continuous transfer mode) can be selected". So in the single mode interrupt is generated after transmission of every byte, and in continuous mode it is generated once the buffer bRead more

    According to the RK78/G13 User’s Manual, “Transfer end interrupt (in single-transfer mode) or buffer empty interrupt (in continuous transfer mode) can be selected“.

    So in the single mode interrupt is generated after transmission of every byte, and in continuous mode it is generated once the buffer becomes empty.

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sravanisandya
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sravanisandya
Asked: February 21, 2022In:
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In Renesas RL78 CS+ IDE while writing to the on-chip debug reserved area is prohibited(address:0x00000002). Showing (E1203124) Error while Flashing from E1 emulator.

In Renesas RL78 CS+ IDE while writing to the on-chip debug reserved area is prohibited(address:0x00000002). Showing (E1203124) Error while Flashing from E1 emulator.

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cs+rl78
  1. subbu

    In Renesas CS+ IDE, Goto Code Generator(Design Tool),On-chip debug setting should be used Now Generate code and Download .

    In Renesas CS+ IDE, Goto Code Generator(Design Tool),On-chip debug setting should be used
    Now Generate code and Download .

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sravanisandya
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sravanisandya
Asked: February 21, 2022In:
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How to Watch Renesas RL78 Data Flash Memory in Watch Window?

How to Watch Renesas RL78 Data Flash Memory in Watch Window?

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cc/cacxcs+rl78
  1. subbu

    In Renesas CS+ IDE , Goto view ->Memory->Memory1 In that DataFlash Address mentioned in Datasheet for Ex.RL78F14, F1000 DataFlash Starting Address

    In Renesas CS+ IDE , Goto view ->Memory->Memory1 In that DataFlash Address mentioned in Datasheet for Ex.RL78F14, F1000 DataFlash Starting Address

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