/****************************************************************************
* configs/z8encore000zco/src/z8_leds.c
*
* Copyright (C) 2008-2009 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
/* The z16f2800100zcog board has four LEDs:
*
* - Green LED D1 which illuminates in the presence of Vcc
* - Red LED D2 connected to chip port PA0_T0IN
* - Yellow LED D3 connected to chip port PA1_T0OUT
* - Green LED D4 connected to chip port PA2_DE0
*/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <stdint.h>
#include <arch/board/board.h>
#include "up_internal.h"
/****************************************************************************
* Definitions
****************************************************************************/
/* Port G: Anode Bit Assignments (1 enables) */
#define Z8_PORTG_ANODE_MASK 0x7f
#define Z8_PORTG_ANODE_ROW0 0x01
#define Z8_PORTG_ANODE_ROW1 0x02
#define Z8_PORTG_ANODE_ROW2 0x04
#define Z8_PORTG_ANODE_ROW3 0x08
#define Z8_PORTG_ANODE_ROW4 0x10
#define Z8_PORTG_ANODE_ROW5 0x20
#define Z8_PORTG_ANODE_ROW6 0x40
/* Port E: Cathode Bit Assignements (0 enables) */
#define Z8_PORTE_CATHODE_MASK 0x1f
#define Z8_PORTE_CATHODE_COLUMN0 0x01
#define Z8_PORTE_CATHODE_COLUMN1 0x02
#define Z8_PORTE_CATHODE_COLUMN2 0x04
#define Z8_PORTE_CATHODE_COLUMN3 0x08
#define Z8_PORTE_CATHODE_COLUMN4 0x10
/* Port E: LED Addressing */
#define Z8_PORTE_LED_MASK 0xe0
#define Z8_PORTE_LED_D3 0x20
#define Z8_PORTE_LED_D4 0x40
#define Z8_PORTE_LED_D1 0x80
/* Port G: LED Addressing */
#define Z8_PORTG_LED_MASK 0x80
#define Z8_PORTG_LED_D2 0x80
/* Special values for display */
#define LED_ALLON { Z8_PORTG_ANODE_MASK, 0x00 }
#define LED_ALLOFF { 0x00, Z8_PORTE_CATHODE_MASK }
#define LED_LEVEL1 { 0x10, 0x00 }
#define LED_LEVEL2 { 0x08, 0x00 }
#define LED_LEVEL3 { 0x04, 0x00 }
#define LED_LEVEL4 { 0x02, 0x00 }
#define LED_LEVEL1I { 0x14, 0x00 }
#define LED_LEVEL2I { 0x0c, 0x00 }
#define LED_LEVEL3I { 0x04, 0x00 }
#define LED_LEVEL4I { 0x06, 0x00 }
#define LED_LEVEL1S { 0x11, 0x00 }
#define LED_LEVEL2S { 0x09, 0x00 }
#define LED_LEVEL3S { 0x05, 0x00 }
#define LED_LEVEL4S { 0x03, 0x00 }
#define LED_LEVEL1A { 0x10, 0x11 }
#define LED_LEVEL2A { 0x08, 0x11 }
#define LED_LEVEL3A { 0x04, 0x11 }
#define LED_LEVEL4A { 0x02, 0x11 }
#define LED_SNAKEEYES { 0x06, 0x11 }
/****************************************************************************
* Private Types
****************************************************************************/
struct z8_ledbits_s
{
uint8_t anode;
uint8_t cathode;
};
/****************************************************************************
* Private Data
****************************************************************************/
static const struct z8_ledbits_s g_ledarray[10][4] =
{
{ LED_ALLON, LED_ALLON, LED_ALLON, LED_ALLON },
{ LED_ALLOFF, LED_ALLOFF, LED_ALLOFF, LED_ALLOFF },
{ LED_LEVEL1, LED_ALLOFF, LED_ALLOFF, LED_ALLOFF },
{ LED_LEVEL1, LED_LEVEL2, LED_ALLOFF, LED_ALLOFF },
{ LED_LEVEL1, LED_LEVEL2, LED_LEVEL3, LED_ALLOFF },
{ LED_LEVEL1, LED_LEVEL2, LED_LEVEL3, LED_LEVEL4 },
{ LED_LEVEL1I, LED_LEVEL2I, LED_LEVEL3I, LED_LEVEL4I },
{ LED_LEVEL1S, LED_LEVEL2S, LED_LEVEL3S, LED_LEVEL4S },
{ LED_LEVEL1A, LED_LEVEL2A, LED_LEVEL3A, LED_LEVEL4A },
{ LED_SNAKEEYES, LED_SNAKEEYES, LED_SNAKEEYES, LED_SNAKEEYES }
};
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Name: z8_putled134
****************************************************************************/
#ifdef CONFIG_ARCH_LEDS
static void z8_putled134(FAR const struct z8_ledbits_s *bits, uint8_t addr)
{
uint8_t porte;
porte = bits->cathode;
putreg8(porte, PEOD); /* Load porte data */
putreg8(bits->anode, PGOD); /* Load portg data */
porte |= addr;
putreg8(porte, PEOD); /* Latch data */
}
#endif
/****************************************************************************
* Name: z8_lputed2
****************************************************************************/
#ifdef CONFIG_ARCH_LEDS
static void z8_putled2(FAR const struct z8_ledbits_s *bits, uint8_t addr)
{
uint8_t portg;
putreg8(bits->cathode, PEOD); /* Load porte data */
portg = bits->anode;
putreg8(porte, PGOD); /* Load portg data */
portg |= addr;
putreg8(portg, PGOD); /* Latch data */
}
#endif
/****************************************************************************
* Name: z8_putarray
****************************************************************************/
#ifdef CONFIG_ARCH_LEDS
static void z8_putarray(FAR const struct z8_ledarray_s *array)
{
z8_putled134(&array->led[0], Z8_PORTE_LED_D1);
z8_putled2(&array->led[1], Z8_PORTG_LED_D2);
z8_putled134(&array->led[2], Z8_PORTE_LED_D3);
z8_putled134(&array->led[3], Z8_PORTE_LED_D4);
}
#endif
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: up_ledinit
****************************************************************************/
#ifdef CONFIG_ARCH_LEDS
void up_ledinit(void)
{
putreg8(0x00, PEAF); /* PE Alt func = Port */
putreg8(0x00, PGAF); /* PG Alt func = Port */
putreg8(0x00, PEOC); /* PE Out Ctrl = push-pull */
putreg8(0x00, PGOC); /* PG Out Ctrl = push-pull */
/*putreg8(0x00, PEDD); * PA Data Dir = output */
putreg8(0x01, PEADDR); /* PA Data Dir = output */
putreg8(0x00, PECTL); /* OUTPUT */
/*putreg8(0x00, PGDD); * PA Data Dir = output */
putreg8(0x01, PGADDR); /* PA Data Dir = output */
putreg8(0x00, PGCTL); /* OUTPUT */
z8_putarray(&g_ledarray[0][0]);
}
/****************************************************************************
* Name: up_ledon
****************************************************************************/
void up_ledon(int led)
{
if ((unsigned)led <= 8)
{
z8_putarray(&g_ledarray[led+1][0]);
}
}
/****************************************************************************
* Name: up_ledoff
****************************************************************************/
void up_ledoff(int led)
{
if (led >= 1)
{
up_ledon(led-1);
}
}
#endif /* CONFIG_ARCH_LEDS */
