view target-utils/c139explore/backlight.c @ 926:6a0aa8d36d06

rvinterf backslash escape: introduce libprint The new helper function library named libprint is meant to replace the badly misnamed libg23, and will soon contain functions for printing all of the same kinds of GPF TST packets that are now handled in libg23. However, we are also moving safe_print_trace() from libasync to this new library, and changing it to emit our new backslash escape format.
author Mychaela Falconia <falcon@freecalypso.org>
date Tue, 23 May 2023 03:47:46 +0000
parents 5d9d95530256
children
line wrap: on
line source

#include <sys/types.h>
#include <strings.h>
#include "types.h"
#include "abbdefs.h"

#define	GPIO_OUT_REG		(*(volatile u16 *) 0xfffe4802)
#define	BACKLIGHT_GPIO_MASK	0x0002

#define	AUXLED_KPBL_OFF	0x000
#define	AUXLED_KPBL_ON	0x002

void
cmd_dbl(argbulk)
	char *argbulk;
{
	char *argv[2];

	if (parse_args(argbulk, 1, 1, argv, 0) < 0)
		return;
	if (!strcmp(argv[0], "on"))
		GPIO_OUT_REG |= BACKLIGHT_GPIO_MASK;
	else if (!strcmp(argv[0], "off"))
		GPIO_OUT_REG &= ~BACKLIGHT_GPIO_MASK;
	else
		printf("ERROR: \"on\" or \"off\" argument expected\n");
}

void
cmd_kpbl(argbulk)
	char *argbulk;
{
	char *argv[2];

	if (parse_args(argbulk, 1, 1, argv, 0) < 0)
		return;
	if (!strcmp(argv[0], "on"))
		abb_reg_write(AUXLED, AUXLED_KPBL_ON);
	else if (!strcmp(argv[0], "off"))
		abb_reg_write(AUXLED, AUXLED_KPBL_OFF);
	else
		printf("ERROR: \"on\" or \"off\" argument expected\n");
}