Found this on OEMs site:
Can anyone help me interpret this? In other words how would I do this in VB or Windows?
Thanks
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Mini-How-to 3rd LED Programming
courtesy of Mark Albrecht, Intel
The 3rd LED on GCT-Allwell's STB is designed for general-purpose use. You can change the state by accessing PC97317 GPIO10 for indication of LAN access (GPIO11(input) will change state if LAN access) or indicate ERROR(server not found)
NOTE: Note that some of the following code came from the Linux kernel, so this is covered under and its use is subject to the GNU GPL. Any program that uses this code must run as root.
#include <sys/perm.h>
#include <sys/io.h>
//
// Refer to the National Semiconductor Datasheet for the 97317
// for register programming information.
// Request 97317 Datasheet
#define SIO_GPIO_START 0x0fc0 file://GPIO Register IO space
#define SIO_PM_START 0x0fc8 file://PM Registers next to GPIO
#define SIO_INDEX 0x2e file://io address of the SIO index register
#define SIO_DATA 0x2f file://io address of the SIO data register
#define SIO_DEV_SEL 0x7
#define SIO_DEV_ENB 0x30
#define SIO_DEV_MSB 0x60
#define SIO_DEV_LSB 0x61
#define SIO_GP_DEV 0x7
#define SIO_PM_DEV 0x8
#define SIO_PM_BASE SIO_PM_START
#define SIO_PM_MSB (SIO_PM_BASE>>8)
#define SIO_PM_LSB (SIO_PM_BASE&0xff)
#define SIO_PM_INDEX (SIO_PM_BASE+0)
#define SIO_PM_DATA (SIO_PM_BASE+1)
#define SIO_PM_FER2 0x1
#define SIO_PM_GP_EN 0x80
#define SIO_GP_BASE SIO_GPIO_START
#define SIO_GP_MSB (SIO_GP_BASE>>8)
#define SIO_GP_LSB (SIO_GP_BASE&0xff)
// GPIO Register Bank 0
#define SIO_GP_DATA1 (SIO_GP_BASE)
#define SIO_GP_DIR1 (SIO_GP_BASE+1)
#define SIO_GP_OT1 (SIO_GP_BASE+2)
#define SIO_GP_PUC1 (SIO_GP_BASE+3)
// GPIO Register Bank 1
#define SIO_GP_LOCK1 (SIO_GP_BASE)
#define SIO_GP_I2O1 (SIO_GP_BASE+2)
#define GPIO10_MASK 1
#define GPIO_BANK_0 0 // mask of GPIO register bank 0 select bit in SIOC2
#define GPIO_BANK_1 0x80 // mask of GPIO register bank 1 select bit in SIOC2
#define OFF 1 // means a low on the GPIO which draws current
// through the LED, thus lighting it
#define ON 0
iopl(3);
/*
*
* First, we have to initialize the 317 part to allow us access
* to the GPIO registers.
*/
outb_p(SIO_DEV_SEL, SIO_INDEX);
outb_p(SIO_GP_DEV, SIO_DATA); /* Talk to GPIO regs. */
outb_p(SIO_DEV_MSB, SIO_INDEX);
outb_p(SIO_GP_MSB, SIO_DATA); /* MSB of GPIO base address */
outb_p(SIO_DEV_LSB, SIO_INDEX);
outb_p(SIO_GP_LSB, SIO_DATA); /* LSB of GPIO base address */
outb_p(SIO_DEV_ENB, SIO_INDEX);
outb_p(1, SIO_DATA); /* Enable GPIO registers. */
/*
* Now, we have to map the power management section to write
* a bit which enables access to the GPIO registers.
*/
outb(SIO_DEV_SEL, SIO_INDEX);
outb(SIO_PM_DEV, SIO_DATA); /* Talk to GPIO regs. */
outb(SIO_DEV_MSB, SIO_INDEX);
outb(SIO_PM_MSB, SIO_DATA); /* MSB of PM base address */
outb(SIO_DEV_LSB, SIO_INDEX);
outb(SIO_PM_LSB, SIO_DATA); /* LSB of PM base address */
outb(SIO_DEV_ENB, SIO_INDEX);
outb(1, SIO_DATA); /* Enable PM registers. */
/*
* Now, write the PM register which enables the GPIO registers.
*/
outb(SIO_PM_FER2, SIO_PM_INDEX);
outb(SIO_PM_GP_EN, SIO_PM_DATA);
outb(GPIO10_MASK,SIO_GP_DIR1); // set GPIO10 direction to output
outb(OFF,SIO_GP_DATA1); // initially turn the light OFF
--------------------------------------
To Blink:
outb(ON,SIO_GP_DATA1);
usleep(20000);
outb(OFF,SIO_GP_DATA1);
usleep(20000);
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