Re: Execute from SDRAM with code storage in NVM for high performance MCU

Jennifer Pinder

Hi,

I have downloaded and am trying to run the example code for the sdcard bootloader, but there are problems. When trying to send the 'ls' command to the SD card, I get the FK_NOT_READY flag and wait_ready never gets FF back from the disk_initialize. What could cause this?

I noticed that in the code example, the mmc-ek-tm4c1294xl.c defines the pins for SSI3 but the ektm4c129_sdcard_boot.c code appears to enable SSI1. SSI1 seems to be consistent with the hardware diagram. Is this correct? Do I need to change the pin defines?

Here are the pins defined in the example code..

#define SDC_SSI_CLK_GPIO_PORT_BASE GPIO_PORTQ_BASE
#define SDC_SSI_CLK GPIO_PIN_0
/* TX pin */
#define SDC_SSI_TX_GPIO_PORT_BASE GPIO_PORTF_BASE
#define SDC_SSI_TX GPIO_PIN_0
/* RX pin */
#define SDC_SSI_RX_GPIO_PORT_BASE GPIO_PORTQ_BASE
#define SDC_SSI_RX GPIO_PIN_2
/* CS pin */
#define SDC_SSI_FSS_GPIO_PORT_BASE GPIO_PORTH_BASE
#define SDC_SSI_FSS GPIO_PIN_4

over 9 years ago

0 Amit Ashara over 9 years ago

TI__Guru**** 244400 points

Hello Jennifer,

Which TivaWare version are you using? The above given defines seem to be coming from 2.1.0.12573 release.

Regards
Amit

0 Jennifer Pinder over 9 years ago in reply to Amit Ashara

Prodigy 50 points

Not sure what you mean by TivaWare version but it is the code example downloaded from the link.

It says this in the ektm4c129_sdcard_boot.c file comments:
"This is part of revision 2.1.0.12573 of the DK-TM4C123G Firmware Package"

0 Jennifer Pinder over 9 years ago in reply to Amit Ashara

Prodigy 50 points

I think that is the correct version. from the comments in the c file.

0 Amit Ashara over 9 years ago in reply to Jennifer Pinder

TI__Guru**** 244400 points

Hello Jennifer,

I meant the mmc-ek-tm4c1294xl.c which is being called by ektm4c129_sdcard_boot.c. The mmc-ek-tm4c1294xl.c must be 2.1.1.71 release

Regards
Amit

0 Jennifer Pinder over 9 years ago in reply to Amit Ashara

Prodigy 50 points

hmm.. where can i get the correct version? This one doesn't have a version number. It is the one included in the project under third_party/fatfs/port/

0 Amit Ashara over 9 years ago in reply to Jennifer Pinder

TI__Guru**** 244400 points

Hello Jennifer,

The latest version is available here.

http://www.ti.com/tool/sw-tm4c

Regards
Amit

0 Jennifer Pinder over 9 years ago in reply to Amit Ashara

Prodigy 50 points

Thank you. The new version of the file had SSI1 setup correctly and I am able to access the SD Card now.

0 Amit Ashara over 9 years ago in reply to Jennifer Pinder

TI__Guru**** 244400 points

Hello Jennifer,

Thanks for the post though. It was a good feedback on the fact that the version of TivaWare in the source files was not correct and neither was it put up in the document that it had to be TivaWare 2.1.1.71 as base line

Regards,
Amit

0 cb1 over 9 years ago in reply to Amit Ashara

Guru 47900 points

Amit Ashara said:
neither was it put up in the document that it had to be TivaWare 2.1.1.71 as base line

Long ago - @ another giant semi-firm - we found it necessary to have one engineer devote (almost) "Full Time" to managing, testing & updating such documentation.

This delightful task is (both) never-ending AND thankless! (And gains attention when it's wrong - NEVER when (overwhelmingly) right...)

0 Amit Ashara over 9 years ago in reply to cb1

TI__Guru**** 244400 points

Hello cb1,

Since I am the owner of the document, it is my responsibility that I need to take action on mistakes that may cause confusion..

Regards
Amit

0 cb1 over 9 years ago in reply to Amit Ashara

Guru 47900 points

Amit Ashara said:
Since I am the owner of the document, it is my responsibility...

Good that.

Note that my writing was completely "uncritical" - in fact high-lighted the fact that documentation is demanding, never-ending, and rarely given, (deserved) "raves."

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Re: Execute from SDRAM with code storage in NVM for high performance MCU