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/* LED support code for OpenPCD
* (C) 2006 by Harald Welte <hwelte@hmw-consulting.de>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#include <sys/types.h>
#include <errno.h>
#include <lib_AT91SAM7.h>
#include <openpcd.h>
#include "../openpcd.h"
#include <os/usb_handler.h>
#include <os/req_ctx.h>
#include <os/dbgu.h>
static int led2port(int led)
{
if (led == 1)
return OPENPCD_PIO_LED1;
else if (led == 2)
return OPENPCD_PIO_LED2;
else
return 0;
}
void led_switch(int led, int on)
{
int port = led2port(led);
if (port == -1)
return;
if (on)
AT91F_PIO_ClearOutput(AT91C_BASE_PIOA, port);
else
AT91F_PIO_SetOutput(AT91C_BASE_PIOA, port);
}
int led_get(int led)
{
int port = led2port(led);
if (port == -1)
return -1;
return !(AT91F_PIO_GetOutputDataStatus(AT91C_BASE_PIOA) & port);
}
int led_toggle(int led)
{
int on = led_get(led);
if (on == -1)
return -1;
if (on)
led_switch(led, 0);
else
led_switch(led, 1);
return !on;
}
static int led_usb_rx(struct req_ctx *rctx)
{
struct openpcd_hdr *poh = (struct openpcd_hdr *) &rctx->rx.data[0];
int ret = 1;
switch (poh->cmd) {
case OPENPCD_CMD_SET_LED:
DEBUGP("SET LED(%u,%u) ", poh->reg, poh->val);
led_switch(poh->reg, poh->val);
break;
default:
DEBUGP("UNKNOWN ");
ret = -EINVAL;
break;
}
req_ctx_put(rctx);
return 1;
}
void led_init(void)
{
AT91F_PIO_CfgOutput(AT91C_BASE_PIOA, OPENPCD_PIO_LED1);
AT91F_PIO_CfgOutput(AT91C_BASE_PIOA, OPENPCD_PIO_LED2);
led_switch(1, 0);
led_switch(2, 0);
usb_hdlr_register(&led_usb_rx, OPENPCD_CMD_CLS_LED);
}
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