/*
*
* USBSTK5505_GPIO_setDirection( number, direction )
*
* Uint16 number <- GPIO number
* Uint16 direction <- 0 : Set GPIO as Input
* 1 : Set GPIO as Output
*
* Description
* Configure the GPIO "number" to input or output.
*
*/
Int16 USBSTK5505_GPIO_setDirection( Uint16 number, Uint16 direction )
{
CSL_Status status;
CSL_GpioPinConfig config;
/* Configure GPIO direction */
config.pinNum = number;
config.direction = direction;
config.trigger = CSL_GPIO_TRIG_CLEAR_EDGE;
/* Set configuration */
status = GPIO_configBit(hGpio,&config);
return status;
}
/**
* \brief Function to test the functionality of GPIO as output pin
*
* This function configures GPIO pin 0 as output pin and writes a value.
* Written value is verified and result is returned to the main function
*
* \param none
*
* \return Test result
*/
int gpio_output_pin_test(void)
{
CSL_Status status;
CSL_GpioPinConfig config;
Uint16 writeVal;
Uint16 readVal;
writeVal = 0;
/* Pin Muxing gor GPIO Pins -
* Make Serial port 0 and 1, parallel port's 8 pin and
* A15 to A20 pin as GPIO
*/
CSL_FINST(CSL_SYSCTRL_REGS->EBSR, SYS_EBSR_SP0MODE, MODE2);
/* Open GPIO module */
hGpio = GPIO_open(&gpioObj, &status);
if((NULL == hGpio) || (CSL_SOK != status))
{
printf("GPIO_open failed\n");
return(CSL_TEST_FAILED);
}
else
{
printf("GPIO_open Successful\n");
}
/* Reset all the pins */
GPIO_reset(hGpio);
/* Configure GPIO pin 0 as output pin */
config.pinNum = CSL_GPIO_PIN0;
config.direction = CSL_GPIO_DIR_OUTPUT;
config.trigger = CSL_GPIO_TRIG_CLEAR_EDGE;
status = GPIO_configBit(hGpio, &config);
if(CSL_SOK != status)
{
printf("GPIO_configBit failed\n");
return(CSL_TEST_FAILED);
}
/* Write 1 to output pin */
status = GPIO_write(hGpio, CSL_GPIO_PIN0, writeVal);
if(CSL_SOK != status)
{
printf("GPIO_write Failed\n");
return(CSL_TEST_FAILED);
}
else
{
printf("GPIO_write Successful\n");
}
/* Read pin No 0 - to check data written is equal to data read */
status = GPIO_read(hGpio, CSL_GPIO_PIN0, &readVal);
if(CSL_SOK != status)
{
printf("GPIO_read failed\n");
return(CSL_TEST_FAILED);
}
else
{
printf("GPIO_read Successful\n");
}
/* Compare the value read and value written */
if(writeVal == readVal)
{
printf("Data read is same as data written\n");
}
else
{
printf("Data read is not same as data written \n");
return(CSL_TEST_FAILED);
}
/* Close the GPIO module */
status = GPIO_close(hGpio);
if(CSL_SOK != status)
{
printf("GPIO_close failed\n");
return(CSL_TEST_FAILED);
}
return(CSL_TEST_PASSED);
}
