RTOS: How to modify the led mode configuration in the EPHYLEDCFG register with tm4c129encpdt chip?

Hi Ralph,

  Thanks a lot! Please take a small look at my post,you will see the last sentance has missed.My quote is :  I also try to change EMACPHYWrite() and EMACPHYRead() to  EMACPHYExtendedRead() and EMACPHYExtendedWrite().Because I have broused some similar posts in the E2E community.Do you have a Evaluation Kit - EK-TM4C129EXL at hand?Please do the test and you will find the error result as I mentioned.More worse, I have suceeded in modifying the EPHYLEDCFG as I set, but the next time when I re-debug the project, the led configuration  I set is not as I set.And the LED1 doesn't take action as the Configuration :0x8L ink OK/Blink on TX/RX Activity.

Hello Nancy,

Are you still setting the configuration for the LED's before the EMAC_init?

Also, does the LED only reset when debugging again, or when you power cycle/reset the board?

If you succeeded in modifying the EPHYLEDCFG register are you still seeking answers about that? If so can you clarify any questions regarding what you have done to configure it?

Hi Ralph,

   I'm still setting the configuration for the LED's before the EMAC_init.And I didn't succeed in  modifying the EPHYLEDCFG register.I still need the proper way to modify the LED's configuration.Could you give me some suggestions?

Tool/software: TI-RTOS

Hi all, 

   In my recent project, I only have one Ethernet PHYLED (LED1) for indicating the Ethernet link status.So I need to set LED1 to Link OK/Blink on TX/RX Activity (0x8) in EPHYLEDCFG register.I add my code before the EMAC_init() in the void EK_TM4C129EXL_initEMAC(void)() function.Here is: 

    GPIOPinConfigure(GPIO_PF4_EN0LED1); /* EK_TM4C129EXL_USR_D4 */

    GPIOPinTypeEthernetLED(GPIO_PORTF_BASE, GPIO_PIN_4); //GPIO_PIN_0 |

    SysCtlPeripheralEnable(SYSCTL_PERIPH_EMAC0);
    SysCtlPeripheralEnable(SYSCTL_PERIPH_EPHY0);
    while (!SysCtlPeripheralReady(SYSCTL_PERIPH_EPHY0) || !SysCtlPeripheralReady(SYSCTL_PERIPH_EMAC0)){}

    EMACPHYExtendedWrite(EMAC0_BASE, 0, EPHY_LEDCFG, 0x0580);  //set LED1 Configuration : Link OK/Blink on TX/RX Activity(0x8)
    value = EMACPHYExtendedRead(EMAC0_BASE, 0, EPHY_LEDCFG);


    /* Once EMAC_init is called, EMAC_config cannot be changed */
    EMAC_init();

   I can read the configuration value from the EMACPHYExtendedRead(EMAC0_BASE, 0, EPHY_LEDCFG)() and the value is 0x0580 just as I set.But the LED1 dosen't act Link OK/Blink on TX/RX Activity (0x8) and it  act as the defalut value (RX/TX Activity (0x1)).Besides, I once used  EMACPHYRead() and  EMACPHYWrite(), I can not change the PHYLED Configuration.I brouse the E2E community, I try to change the functions to EMACPHYExtendedRead() and EMACPHYExtendedWrite().The PHYLED Configuration can be set, so I post the later code above in my post.

Where and how to modify the Ethernet PHYLED Configuration on chip of TM4C1294NCPDT?

 

Hello Nancy,

I merged your new thread with this one... it is an open issue for me and I am looking into it for you, so there is no need for a duplicate thread at this time. I will have more details for you later today. Thank you.

Also I didn't get all my questions answered from before:

"Also, does the LED only reset when debugging again, or when you power cycle/reset the board?"
* Asked specifically due to the line of: "More worse, I have suceeded in modifying the EPHYLEDCFG as I set, but the next time when I re-debug the project, the led configuration I set is not as I set."

Hello Nancy,

I was not able to test the Ethernet LED functionality today, but it's still on my slate.

One thing I have noticed on a prior thread is that someone mentioned needing to configure the LED's after the configuration is done (which I believe includes the EMAC_init function). Also looking at the lwiplib.c from the enet_io example, the EMACConfigSet function is called after EMACInit so I am not sure of the validity of the comment "Once EMAC_init is called, EMAC_config cannot be changed"

As mentioned, I didn't have a chance to test both doing the LED config before and after, but trying to use the LED configuration after the EMAC Init and Configurations would be a step I recommend you take to see if that provides positive results.

Hi Ralph,

    Thanks a lot!

    I post another topic because I think I didn't articulate my question.I use Ti-RTOS for my project.I  emphasized it in Tool/software and the code I stuck is the function void EK_TM4C129EXL_initEMAC(void)() in classic Ti-RTOS ethernet examples,like tcpEcho_EK_TM4C129EXL_TI_TivaTM4C129ENCPDT and so on.You use the enet_io example which is the Tivaware example which is different from my example and there is no doubt that you think my result is not as you tested.My result : the LEDs Configuration can be changed to the value I set in the register EPHYLEDCFG,but the Leds act as the default value 0x510.I test in the Ti Evaluation Kit - EK-TM4C129EXL.

   Also,I used the EMACPHYExtendedWrite() and EMACPHYExtendedRead() becuase when I have any question about ti-chips I will brouse the E2E community to search any possible or relative posts beforing mmy own posts.You can also reply my another copy-post.  

Hi Nancy,

I tried to make similar changes with the TI-RTOS example but had no luck either. I will see about pulling in an RTOS expert to help from here now that what DriverLib API's are needed are clear. I'm not sure how to integrate them into the RTOS example myself. My attempts to do so rendered the program inoperable.

I am going to post a code snippet from the TivaWare example which I got working properly below so the RTOS team has that as a point of reference for what works:

    //
    // Configure for use with whichever PHY the user requires.
    //
    EMACPHYConfigSet(EMAC0_BASE, EMAC_PHY_CONFIG);

    //
    // Initialize the MAC and set the DMA mode.
    //
    MAP_EMACInit(EMAC0_BASE, ui32SysClkHz,
                 EMAC_BCONFIG_MIXED_BURST | EMAC_BCONFIG_PRIORITY_FIXED,
                 4, 4, 0);

    //
    // Set MAC configuration options.
    //
    MAP_EMACConfigSet(EMAC0_BASE, (EMAC_CONFIG_FULL_DUPLEX |
                                   EMAC_CONFIG_CHECKSUM_OFFLOAD |
                                   EMAC_CONFIG_7BYTE_PREAMBLE |
                                   EMAC_CONFIG_IF_GAP_96BITS |
                                   EMAC_CONFIG_USE_MACADDR0 |
                                   EMAC_CONFIG_SA_FROM_DESCRIPTOR |
                                   EMAC_CONFIG_BO_LIMIT_1024),
                      (EMAC_MODE_RX_STORE_FORWARD |
                       EMAC_MODE_TX_STORE_FORWARD |
                       EMAC_MODE_TX_THRESHOLD_64_BYTES |
                       EMAC_MODE_RX_THRESHOLD_64_BYTES), 0);

    //
    // Program the hardware with its MAC address (for filtering).
    //
    MAP_EMACAddrSet(EMAC0_BASE, 0, (uint8_t *)pui8MAC);

    EMACPHYExtendedWrite(EMAC0_BASE, 0, EPHY_LEDCFG, 0x0588);  //set LED1 Configuration : Link OK/Blink on TX/RX Activity(0x8)

Nancy,

I added the C:\ti\tirtos_tivac_2_16_01_14\products\tidrivers_tivac_2_16_01_13\packages\ti\drivers\emac\EMACSnow.c file into the TCP Echo project and then added the bolded line into EMACSnow_NIMUInit().

   EMACAddrSet(EMAC0_BASE, 0, (uint8_t *)device->mac_address);

   EMACPHYExtendedWrite(EMAC0_BASE, 0, EPHY_LEDCFG, 0x0588);

   /* Initialize the DMA descriptors. */

   EMACSnow_InitDMADescriptors();

I built and ran the example. I know see both green D3 and D4 LEDs flashing to denote activity on the EK-TM4C1294XL LaunchPad. Is this what you wanted to do?

Todd