LED Blink Example

Hello Eli,

To be clear here are you using the TMDS243EVM or the LP-AM243?

Looking through the dev.ti.com example, it looks to be targeted for the LP-AM243. If you are using this with the TMDS243EVM instead, then you would get that result as the LED configuration is not the same I/O between the examples. I verified this with a TMDS243EVM.

Best Regards,

Ralph Jacobi

Hi,

I'm using the TMDS243EVM with the example from Resource explorer of mcu_plus_sdk_am243x_08_06_00_43.

Please guide me to how to configure the exampe_syscfg utility for blinking the LED.

Thanks,

Eli

Hi,

I did several things including your suggestion.

The application runs on the EVM but no LED blinks - all LEDs lit up

Is there an address that controls the LED ?

Please advice.

Thanks,

Eli

Hi,

I would like to add a blinking LED to the "TCP server" example (which works well) - for further development.

Thanks,

Eli

Hello Eli,

I will forward this to another expert on the team as I am out of office currently.

Best Regards,

Ralph Jacobi

Thanks !

Hi Eli,

I tested out the GPIO Led Blink example from the 08.06 SDK, the LED does blink as expected. Can you please confirm you are checking the right LED, i.e LD 26.

Anyways, to add the LED blink to your TCP server example, you can refer the GPIO led blink example code and make the changes accordingly as mentioned.

1. Add the GPIO module in Syscfg.
2. Make sure to build and regenerate the auto-generated files for your application.
3. In the main TCP application, use the GPIO_WriteHigh or GPIO_WriteLow APIs with the required delays.

If you face any issues, feel free to drop them here.

Regards,

Shaunak

Hi Shaunak,

The original code uses GPIO_Pin(GPIO_22) - but LED26 is not lit up.

Here is the configuration I've tried (which also doesn't work)

What should I select in the syscfg ?

Thanks,

Eli 

Hi Eli

Below is the snippet for syscfg configuration for the "GPIO Led Blink example" from MCU_PLUS_SDK 08.06 version.

.

Seems like the GPIO pin selected is incorrect and thus the LED is not blinking.

Can you please try the same configuration (A7 pin), and recheck if the LED (i have highlighted in my previous reply) is blinking? I run the out of box example and it is working for me.

Please let me know if it works or we will debug it further.

Regards,

Shaunak

Hi Shaunak,

These all the options I have - there's no A7

Please advise,

Thanks,

Eli

Hi Eli, 

That's strange, im unable to reproduce it from out of box example in case of 08.06, 09.00 or 09.01. Can you please share the version of Syscfg you are using.

Also I would once recommend you to try the LED blink example on MCU_PLUS_SDK 09.01 latest version, along with the latest version of Sycfg.

MCU_PLUS_SDK 09.01 - www.ti.com/.../MCU-PLUS-SDK-AM243X

Syscfg - https://www.ti.com/tool/SYSCONFIG#downloads

Now we at least know that the issue isn't with Hardware or the example code itself, but the GPIO Pinmux.

Regards,
Shaunak

Hi Shaunak,

A. Using:  

mcu_plus_sdk_am243x_08_06_00_43

sysconfig_1.14.0

ccs1250

tried with led_blink project tried with tcp server project - same result - cannot see A7 as in the picture I've sent.

B.  Using:

mcu_plus_sdk_243x_09_00_00_35

sysconfig_1.17.0

tried with led_blink project tried with tcp server project - same result - cannot see A7 as in the picture I've sent.

I will try with SDK 09.01 - but I would like with the mcu_plus_sdk_am243x_08_06_00_43 - (I've made changes for my application)

Is there a way to bypass the syscfg tool and config the LED26 I/O pin and direction directedly from my code ?

Please write a short example.

Thanks,

Eli 

Hi Eli,

Yes we can try bypassing the syscfg. The syscfg will autogenerate the files based on the configurations you make. 

In file ti_drivers_config.h, ensure that the settings are as follows:

/* GPIO PIN Macros */
#define GPIO_LED_BASE_ADDR (CSL_MCU_GPIO0_BASE)
#define GPIO_LED_PIN (5)
#define GPIO_LED_DIR (GPIO_DIRECTION_OUTPUT)
#define GPIO_LED_TRIG_TYPE (GPIO_TRIG_TYPE_NONE)
#define CONFIG_GPIO_NUM_INSTANCES (1U)

After this, you will have to ensure that the correct MACRO is being used for the GPIO Led Base address and the GPIO Led Pin (as mentioned above), in the main application as well as in "ti_drivers_config.c". 

The application flow for GPIO is as follows:

main() -> System_init() -> GPIO_init(). This GPIO init will take the above LED base address and pin number.

Can you please try it out once at your end. 

Thanks and regards,

Shaunak

Hi Shaunak,

I'm going to try it now.

I have a question - Can I edit ti_drivers_config.c ? or is it auto generated ?

Thanks,

Eli

Hi Eli,

It is auto-generated. But you can disable the re-generation of the file using Syscfg. In Syscfg, you can de-select the file that you don't want to re-generate (You can see a list of files on the right hand side of the tool).

.

But please note that we do want the ti_drivers_config.c to be compiled (we just dont want it to be regenerated), so make sure it gets compiled.

Thanks and regards,

Shaunak

Hi Shaunak,

Ok so I'll disable the auto generation and try

Thanks,

Eli

Hi Shaunak,

It runs but the LED26 is not lit-up.

I have lines like

gpioBaseAddr = (uint32_t) AddrTranslateP_getLocalAddr(0x4201000UL);
pinNum = 5;

Is the 0x4201000UL is correct address?

Is there a more direct I/O write to the LED26 ?

Thanks,

Eli

Hi Eli, 

Can you try running the binary I have attached?

gpio_led_blink.release.out

Regards,

Shaunak

Hi Shaunak,

Can you please explain how to run the gpio_led_blink.release.out ?

If I select debug - it compiles and runs my version.

Thanks,

Eli

Hi Eli,

Sharing the steps below:

1. In your CCS, you might have a target configuration created for the AM243x-EVM. In case you don't have it, you can follow: https://software-dl.ti.com/mcu-plus-sdk/esd/AM243X/latest/exports/docs/api_guide_am243x/CCS_SETUP_PAGE.html#CCS_NEW_TARGET_CONFIG

2. Once you have the target configuration set up, you can Launch your target configuration (incase you want to refer; https://software-dl.ti.com/mcu-plus-sdk/esd/AM243X/latest/exports/docs/api_guide_am243x/CCS_LAUNCH_PAGE.html#CCS_LAUNCH)

3. Connect to your target and Load the program (the binary i sent in my previous reply) (refer: https://software-dl.ti.com/mcu-plus-sdk/esd/AM243X/latest/exports/docs/api_guide_am243x/CCS_LAUNCH_PAGE.html#CCS_LOAD_RUN)

Regards,

Shaunak

Hi Shaunak,

I've tried to use run -> Load Program

Please advice.

Thanks,

Eli 

HI Eli,

I see at the top of the thread that the device mentioned is TMDS243EVM. In your above screenshot I notice that the console reads "am243x-lp"

Can you please confirm once?

Regards,

Shaunak