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Nuvoton: Optimize spi_master_write(...) in case of no SPI MISO pin #12454

Merged
merged 1 commit into from
Feb 19, 2020
Merged

Nuvoton: Optimize spi_master_write(...) in case of no SPI MISO pin #12454

merged 1 commit into from
Feb 19, 2020

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ccli8
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@ccli8 ccli8 commented Feb 18, 2020

Summary of changes

This PR tries to optimize spi_master_write(...) in case of no SPI MISO pin. It does so by skipping SPI read so that no more FIFO write/read delay contribute to SPI inter-frame delay when data is written successively.

Update Nuvoton targets:

  • NUMAKER_PFM_NANO130
  • NUMAKER_PFM_NUC472
  • NUMAKER_PFM_M453
  • NUMAKER_PFM_M487/NUMAKER_IOT_M487
  • NU_PFM_M2351_*
  • NUMAKER_IOT_M263A
  • NUMAKER_M252KG

Pull request type 

[x] Patch update (Bug fix / Target update / Docs update / Test update / Refactor)
[] Feature update (New feature / Functionality change / New API)
[] Major update (Breaking change E.g. Return code change / API behaviour change)

Test results 

[] No Tests required for this change (E.g docs only update)
[x] Covered by existing mbed-os tests (Greentea or Unittest)
[] Tests / results supplied as part of this PR

@ccli8
Nuvoton: Make SPI inter-frame (delay match configured suspend interval
8df96ec 
In no MISO case, skip SPI read so that no more write/read delay contribute to SPI inter-frame delay when data is written successively.

Update targets:
-   NUMAKER_PFM_NANO130
-   NUMAKER_PFM_NUC472
-   NUMAKER_PFM_M453
-   NUMAKER_PFM_M487/NUMAKER_IOT_M487
-   NU_PFM_M2351_*
-   NUMAKER_IOT_M263A
-   NUMAKER_M252KG
@ciarmcom ciarmcom requested review from Ronny-Liu and a team February 18, 2020 08:00
@ciarmcom
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@ccli8, thank you for your changes.
@Ronny-Liu @ARMmbed/mbed-os-maintainers please review.

@ccli8 ccli8 mentioned this pull request Feb 18, 2020
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@mergify mergify bot added needs: CI and removed needs: review labels Feb 18, 2020
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0xc0170 commented Feb 18, 2020

CI started

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mbed-ci commented Feb 18, 2020

Test run: SUCCESS

Summary: 11 of 11 test jobs passed
Build number : 1
Build artifacts

@0xc0170 0xc0170 merged commit 043f68b into ARMmbed:master Feb 19, 2020
@mergify mergify bot removed the ready for merge label Feb 19, 2020
@cyliangtw cyliangtw deleted the nuvoton_spi_no_miso branch March 9, 2023 05:31
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@bulislaw bulislaw bulislaw approved these changes

@Ronny-Liu Ronny-Liu Awaiting requested review from Ronny-Liu

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