From 716ca530e1c4515d8683c9d5be3d56b301758b66 Mon Sep 17 00:00:00 2001 From: James <> Date: Wed, 4 Nov 2015 11:49:21 +0000 Subject: trunk-47381 --- target/linux/at91/image/dfboot/src/led.c | 103 +++++++++++++++++++++++++++++++ 1 file changed, 103 insertions(+) create mode 100644 target/linux/at91/image/dfboot/src/led.c (limited to 'target/linux/at91/image/dfboot/src/led.c') diff --git a/target/linux/at91/image/dfboot/src/led.c b/target/linux/at91/image/dfboot/src/led.c new file mode 100644 index 0000000..40d4911 --- /dev/null +++ b/target/linux/at91/image/dfboot/src/led.c @@ -0,0 +1,103 @@ +/* + * (C) Copyright 2006 + * Atmel Nordic AB + * Ulf Samuelsson + * + * See file CREDITS for list of people who contributed to this + * project. + * + * 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 + +#define GREEN_LED AT91C_PIO_PB0 +#define YELLOW_LED AT91C_PIO_PB1 +#define RED_LED AT91C_PIO_PB2 + +void LED_set(unsigned int led) +{ + AT91PS_PIO PIOB = AT91C_BASE_PIOB; + PIOB->PIO_SODR = (led ^ 0x7) & 0x7; // All 0's => Set PIO high => OFF + PIOB->PIO_CODR = led & 0x7; // All 1's => Set PIO low => ON +} + +void green_LED_on(void) +{ + AT91PS_PIO PIOB = AT91C_BASE_PIOB; +// PIOB->PIO_CODR = GREEN_LED; + PIOB->PIO_CODR = (1 << 0); +} + +void yellow_LED_on(void) +{ + AT91PS_PIO PIOB = AT91C_BASE_PIOB; +// PIOB->PIO_CODR = YELLOW_LED; + PIOB->PIO_CODR = (1 << 1); +} + +void red_LED_on(void) +{ + AT91PS_PIO PIOB = AT91C_BASE_PIOB; +// PIOB->PIO_CODR = RED_LED; + PIOB->PIO_CODR = (1 << 2); +} + +void green_LED_off(void) +{ + AT91PS_PIO PIOB = AT91C_BASE_PIOB; +// PIOB->PIO_SODR = GREEN_LED; + PIOB->PIO_SODR = (1 << 0); +} + +void yellow_LED_off(void) +{ + AT91PS_PIO PIOB = AT91C_BASE_PIOB; +// PIOB->PIO_SODR = YELLOW_LED; + PIOB->PIO_SODR = (1 << 1); +} + +void red_LED_off(void) +{ + AT91PS_PIO PIOB = AT91C_BASE_PIOB; +// PIOB->PIO_SODR = RED_LED; + PIOB->PIO_SODR = (1 << 2); +} + +void LED_blink(unsigned int led) +{ + volatile int i,j; + for(i = 0; i < 5; i++) { + LED_set((1 << led)&0x7); + for(j= 0; j < 200000; j++); + LED_set(0); + for(j= 0; j < 200000; j++); + } +} + + +void LED_init (void) +{ + AT91PS_PIO PIOB = AT91C_BASE_PIOB; + AT91PS_PMC PMC = AT91C_BASE_PMC; + PMC->PMC_PCER = (1 << AT91C_ID_PIOB); // Enable PIOB clock + // Disable peripherals on LEDs + PIOB->PIO_PER = AT91C_PIO_PB2 | AT91C_PIO_PB1 | AT91C_PIO_PB0; + // Enable pins as outputs + PIOB->PIO_OER = AT91C_PIO_PB2 | AT91C_PIO_PB1 | AT91C_PIO_PB0; + // Turn all LEDs OFF + PIOB->PIO_SODR = AT91C_PIO_PB2 | AT91C_PIO_PB1 | AT91C_PIO_PB0; +} -- cgit v1.2.3