Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Jump to bottom

TM4C123 and TM4C129: Improve SPI Speed #365

Closed
rei-vilo opened this issue Apr 3, 2014 · 2 comments
Closed

TM4C123 and TM4C129: Improve SPI Speed #365

rei-vilo opened this issue Apr 3, 2014 · 2 comments
Assignees
@robertinant
Labels
LaunchPad Connected TM4C129 LaunchPad LM4F120-TM4C123 Library Core

Comments

@rei-vilo
Copy link
Member

rei-vilo commented Apr 3, 2014

SPI tops at 4 MHz because base speed is 8MHz.

As for the Stellaris and TM4C123 LaunchPads, I've changed

ROM_SSIConfigSetExpClk(SSIBASE, SysCtlClockGet(), SSI_FRF_MOTO_MODE_0, SSI_MODE_MASTER, 8000000, 8);

for

ROM_SSIConfigSetExpClk(SSIBASE, SysCtlClockGet(), SSI_FRF_MOTO_MODE_0, SSI_MODE_MASTER, 16000000, 8);

See #164 and #245
@rei-vilo
Copy link
Member Author

I guess there's a cleaner implementation for a faster SPI.

@rei-vilo rei-vilo changed the title TM4C129: Improve SPI Speed TM4C123 and TM4C129: Improve SPI Speed May 22, 2014
@robertinant robertinant mentioned this issue Aug 30, 2017
Closed
@robertinant
Copy link
Member

This issue was moved to energia/tivac-core#22

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
Assignees

@robertinant robertinant

Labels
LaunchPad Connected TM4C129 LaunchPad LM4F120-TM4C123 Library Core
Projects
None yet
Milestone
No milestone
Development

No branches or pull requests
2 participants
@rei-vilo @robertinant