Blinking Led Example Project LCDK OMAP-L138 doesn't work

Hey Aaron,

Thanks for the help.

The problem was the .cmd file that was automaticly used when I changed the device int the project properties, when I changed it back, it worked.

You are right about the muxing part for the other LED.

Joel

Hi

 

Where is this macro defined:

PINMUX13_GPIO6_13_ENABLE

Where I can similar definition for GPIO2[4]

if can not be found anywhere how to define it.

 

 

Thanks

Attached are the files I modified from the root OMAPL138_StarterWare_1_10_03_03 directory.  I was running the echoApp demo.

Best regards,

Aaron

4300.lcdk_led_echoApp_changes_SW1_10_03_03.zip

Hi Aaron

 

which libraries are used to link the following symbols:

 

PSCModuleControl

GPIOBank6Pin12PinMuxSetup   

GPIODirModeSet

GPIOPinRead

GPIOPinWrite

 

Thanks

 

Hey Hatem,

From the OMAPL138_StarterWare_1_10_03_03 directory you can find "psc.h" and "gpio.h".

Furthermore, to config the pin multiplexing, you can use a small app called: "PinMux" (surprise surprise) 0576.PinMux.zip

and then just change the wanted pinmux registers with the received values, like that:

/* The Local PSC number for GPIO is 3. GPIO belongs to PSC1 module.*/
PSCModuleControl(SOC_PSC_1_REGS, HW_PSC_GPIO, PSC_POWERDOMAIN_ALWAYS_ON,
PSC_MDCTL_NEXT_ENABLE);

// Select GP8[10] (139) and GP8[12] (141) as GPIO's
HWREG(SOC_SYSCFG_0_REGS + SYSCFG0_PINMUX(18)) |= 0x80800000;

Best regards,

Yoel

Hello,

Getting an error "expression must be an modifiable lvalue" at following statement

HWREG(SOC_SYSCFG_0_REGS + SYSCFG0_PINMUX(13)) =  0x00000088;

Thank you in anticipation

Best Regards

Kalyani

Thank you Titus.

Yes you are right. After including "hw_types.h" file the error is resolved but now getting one more error as "unresolved symbol SYSCFG0_PINMUX, first referenced in ./gpioCardDetect.obj". I have imported gpio example from starterware and trying to modify the same code. 

Thanks in advance

Regards

Kalyani

Also you need to include the #include "hw_syscfg0_OMAPL138.h" this file as well.

Similarly after adding "hw_syscfg0_C6748.h" above error is solved. But only one LED is blining. My aim is to blink two LEDs.

Now my program is as follows:


#include "gpio.h"
#include "psc.h"
#include "soc_C6748.h"
#include "lcdkC6748.h"
#include "hw_types.h"
#include "hw_syscfg0_C6748.h"

/****************************************************************************/
/* LOCAL FUNCTION PROTOTYPES */
/****************************************************************************/
static void Delay(volatile unsigned int delay);

/****************************************************************************/
/* GLOBAL VARIABLES */
/****************************************************************************/

/****************************************************************************/
/* LOCAL FUNCTION DEFINITIONS */
/****************************************************************************/
void GPIOBank6Pin13PinMuxSetup(void);

int main(void)
{
/* The Local PSC number for GPIO is 3. GPIO belongs to PSC1 module.*/
PSCModuleControl(SOC_PSC_1_REGS, HW_PSC_GPIO, PSC_POWERDOMAIN_ALWAYS_ON,PSC_MDCTL_NEXT_ENABLE);

GPIOBank6Pin12PinMuxSetup();
GPIOBank6Pin13PinMuxSetup(); // kalyani
GPIODirModeSet(SOC_GPIO_0_REGS, 109, GPIO_DIR_OUTPUT);
GPIODirModeSet(SOC_GPIO_0_REGS, 110, GPIO_DIR_OUTPUT); //kalyani
while(1)
{
GPIOPinWrite(SOC_GPIO_0_REGS, 109, GPIO_PIN_LOW);
GPIOPinWrite(SOC_GPIO_0_REGS, 110, GPIO_PIN_LOW); //kalyani
Delay(1000000);
GPIOPinWrite(SOC_GPIO_0_REGS, 109, GPIO_PIN_HIGH);
GPIOPinWrite(SOC_GPIO_0_REGS, 110, GPIO_PIN_HIGH); //kalyani
Delay(1000000);
}

}

static void Delay(volatile unsigned int delay)
{
while(delay--);
}


void GPIOBank6Pin13PinMuxSetup(void)
{
HWREG(SOC_SYSCFG_0_REGS + SYSCFG0_PINMUX(13)) = 0x00008800;
}

Please help me.

Thank you
Regards
Kalyani

Thank you very much,
Error is solved now. But only one LED is blinking whereas my aim is to blink two LEDs.
Program is as follows:
#include "gpio.h"
#include "psc.h"
#include "soc_C6748.h"
#include "lcdkC6748.h"
#include "hw_types.h"
#include "hw_syscfg0_C6748.h"

/****************************************************************************/
/* LOCAL FUNCTION PROTOTYPES */
/****************************************************************************/
static void Delay(volatile unsigned int delay);

/****************************************************************************/
/* GLOBAL VARIABLES */
/****************************************************************************/

/****************************************************************************/
/* LOCAL FUNCTION DEFINITIONS */
/****************************************************************************/
void GPIOBank6Pin13PinMuxSetup(void);

int main(void)
{
/* The Local PSC number for GPIO is 3. GPIO belongs to PSC1 module.*/
PSCModuleControl(SOC_PSC_1_REGS, HW_PSC_GPIO, PSC_POWERDOMAIN_ALWAYS_ON,PSC_MDCTL_NEXT_ENABLE);

GPIOBank6Pin12PinMuxSetup();
GPIOBank6Pin13PinMuxSetup(); // kalyani
GPIODirModeSet(SOC_GPIO_0_REGS, 109, GPIO_DIR_OUTPUT);
GPIODirModeSet(SOC_GPIO_0_REGS, 110, GPIO_DIR_OUTPUT); //kalyani
while(1)
{
GPIOPinWrite(SOC_GPIO_0_REGS, 109, GPIO_PIN_LOW);
GPIOPinWrite(SOC_GPIO_0_REGS, 110, GPIO_PIN_LOW); //kalyani
Delay(1000000);
GPIOPinWrite(SOC_GPIO_0_REGS, 109, GPIO_PIN_HIGH);
GPIOPinWrite(SOC_GPIO_0_REGS, 110, GPIO_PIN_HIGH); //kalyani
Delay(1000000);
}

}

static void Delay(volatile unsigned int delay)
{
while(delay--);
}


void GPIOBank6Pin13PinMuxSetup(void)
{
HWREG(SOC_SYSCFG_0_REGS + SYSCFG0_PINMUX(13)) = 0x00008800;
}

Only GP6[12] LED is blinking.


Thanks in advance.
Regards
Kalyani

Please make sure that you have done pinmux correctly for that GPIO which is not blinking.
You can check the value of PINMUX register using CCS register window.

Thank you Titus,

I have checked the value of PINMUX register using CCS window. Both GPIOs are enabled. Here is the snapshot.

Regards

Kalyani

Dear Titus,

I have modified the program just to "ON" the LED's. As you see in the above fig. In the registers section GP6P12 AND GP6P13  OUT VALUE is SET TO 1, but on the board led is not "ON".

Thanks

Kalyani

Have you tried the example which I given in the last post ?

Yes,

Program is executed properly but it is also not working on board. 

Thanks  

Kalyani 

Have you changed the DIP switch on LCDK board to blink the LEDs ?
If still its not working, better to probe at LED pins and make sure that LED is in good condition.

That code was tested on both C6748 and OMAPL138 LCDK boards.

Hi,

I am trying to make a small program  to blink a led using an OMAP l-138 LCDK board that is running linux kernel 3.3.0.

Could you please me explain me how can i make such a program?

Thanks,