Stellaris general questions

Martin Rodriguez1

hi e2e community, I'm new to the stellaris launchpad and have some questions I haven't been able to answer by digging through the documentation files.

First: When I try to create my own project, and try to debug it I get a:"could not open .out"-type error. I have been able to run all the labs in the workshops, and I notice that in the project explorer I don't see binaries (right above includes) in my project. does anyone know how to create this .out file so I can load the program to the stellaris?

Also, when running the hello world example code on my board I get it to print on the screen, but only in debug mode. If I just hit the reset button on-board I don't see anything in the terminal. I expected that once I hit the reset button the code will run once again printing "hello world" to the screen a second time.

over 12 years ago

0 Joerg Quinten over 12 years ago

Guru 17650 points

Hi Martin,

you can use Project 0 to get you started (http://processors.wiki.ti.com/index.php/Stellaris_LM4F120_LaunchPad_Blink_the_RGB), or start with one of the Launchpad Workshop examples and alter them to your needs.

Which tools (hardware and software) are you using?

aBUGSworstnightmare

0 Martin Rodriguez1 over 12 years ago in reply to Joerg Quinten

Prodigy 30 points

Thank you very much for you reply,

I did just that and everything has worked out fine since. One thing though, I'm using the API you provided for I2C communications (Thanks a lot), and I noticed that there is one line of code that I was missing when I tried to initialized the I2C1 peripheral myself. That is: "GPIOPinTypeI2CSCL(GPIO_PORTA_BASE, GPIO_PIN_6);". Is this the only peripheral that requires this special call?(I2C peripherals in general)

0 Stellaris Dexter over 12 years ago in reply to Martin Rodriguez1

TI__Genius 17225 points

This API call GPIOPinTypeI2CSCL is new to LM4F class devices. The LM3S devices did not require this. It applies to all I2C's on LM4F

0 Martin Rodriguez1 over 12 years ago in reply to Stellaris Dexter

Prodigy 30 points

Thanks for all the answers so far, they have been a lot of help. I've recently run into another problem. Back on the msp430 I was able to go into the different low power modes that would resume operation of the program once exited. On the Stellaris however, particularly the lm4f120H5QR, I only see the option to go into a hibernation mode that would, instead or resume the program, cause a reset once the WAKE pin is asserted or the RTC has reached a certain value. Is there a way to get around this, and have it operate similarly to the LPMs of the msp430?

Thank you,

Martin

0 Stellaris Dexter over 12 years ago in reply to Martin Rodriguez1

TI__Genius 17225 points

See the Sleep and Deep Sleep modes. The datasheet discusses these in the System Control section and StellarisWare provides acces via SysCtl function calls.

Arm-based microcontrollers

Arm-based microcontrollers forum

Stellaris general questions