[Armadeus-commitlog] armadeus branch, master, updated. armadeus-5.2-202-gbe50ded
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[Armadeus-commitlog] armadeus branch, master, updated. armadeus-5.2-202-gbe50ded
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From: SebR <se...@us...> - 2013-03-12 16:32:25
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- Log -----------------------------------------------------------------
commit be50ded1e9cb4b9da81a36972761b92f5a8475a3
Merge: cb37546 bbcb713
Author: seb <seb...@ar...>
Date: Tue Mar 12 17:31:59 2013 +0100
Merge branch 'master' of ssh://git.code.sf.net/p/armadeus/code
commit cb375466613a8e68b4b0d85922020549c3cc1014
Author: seb <seb...@ar...>
Date: Tue Mar 12 17:29:56 2013 +0100
[as_devices] add as_led : basic support for leds
-----------------------------------------------------------------------
Summary of changes:
target/packages/as_devices/c/Makefile | 1 +
target/packages/as_devices/c/as_led.c | 171 +++++++++++++++++++++++++++++++++
target/packages/as_devices/c/as_led.h | 105 ++++++++++++++++++++
3 files changed, 277 insertions(+), 0 deletions(-)
create mode 100644 target/packages/as_devices/c/as_led.c
create mode 100644 target/packages/as_devices/c/as_led.h
diff --git a/target/packages/as_devices/c/Makefile b/target/packages/as_devices/c/Makefile
index 2aab51f..41bc090 100644
--- a/target/packages/as_devices/c/Makefile
+++ b/target/packages/as_devices/c/Makefile
@@ -12,6 +12,7 @@ ifeq ($(ARMADEUS_LINUX_VERSION),2.6.29.6)
OBJ += as_gpio_2_6_29.o
else
OBJ += as_gpio.o
+OBJ += as_led.o
endif
OBJ += as_dac.o
OBJ += as_adc.o
diff --git a/target/packages/as_devices/c/as_led.c b/target/packages/as_devices/c/as_led.c
new file mode 100644
index 0000000..85721b9
--- /dev/null
+++ b/target/packages/as_devices/c/as_led.c
@@ -0,0 +1,171 @@
+/*
+ ** C wrapper for GPIOs usage.
+ **
+ ** Copyright (C) 2013 The Armadeus Project - ARMadeus Systems
+ ** Sébastien Royen <seb...@ar...>
+ **
+ ** This library is free software; you can redistribute it and/or
+ ** modify it under the terms of the GNU Lesser General Public
+ ** License as published by the Free Software Foundation; either
+ ** version 2.1 of the License, or (at your option) any later version.
+ **
+ ** This library 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
+ ** Lesser General Public License for more details.
+ **
+ ** You should have received a copy of the GNU Lesser General Public
+ ** License along with this library; if not, write to the Free Software
+ ** Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <fcntl.h>
+#include <unistd.h> /* for close() */
+#include <errno.h>
+
+#include "as_helpers.h"
+#include "as_led.h"
+
+#undef ERROR
+#define ERROR(fmt, ...) printf(fmt, ##__VA_ARGS__)
+
+#define SYS_CLASS_LEDS_PATH "/sys/class/leds"
+
+/*------------------------------------------------------------------------------*/
+
+static int32_t led_echo(struct as_led_device *a_led_dev, char *a_filename,
+ char *a_content, int32_t a_length)
+{
+ char buf[64];
+ int32_t result = -1;
+ int fd;
+
+ snprintf(buf, sizeof(buf), SYS_CLASS_LEDS_PATH"/%s/%s",
+ a_led_dev->led_name, a_filename);
+ fd = open(buf, O_WRONLY);
+ if (fd < 0) {
+ ERROR("Can't open %s\n", buf);
+ } else {
+ if (a_length != write(fd, a_content, a_length)) {
+ ERROR("Error when writing %s to %s\n", a_content, buf);
+ } else {
+ result = 0;
+ }
+ close(fd);
+ }
+ return result;
+}
+
+/*------------------------------------------------------------------------------*/
+
+struct as_led_device *as_led_open(char *a_led_name)
+{
+ struct as_led_device *dev;
+ char buf[64];
+
+ dev = malloc(sizeof(struct as_led_device));
+ if (dev == NULL) {
+ ERROR("Can't allocate as_led_device structure\n");
+ } else {
+ snprintf(dev->led_name, sizeof(dev->led_name), "%s", a_led_name);
+ snprintf(buf, sizeof(buf), SYS_CLASS_LEDS_PATH"/%s/brightness", dev->led_name);
+ dev->file_brightness = open(buf, O_RDWR);
+ if (dev->file_brightness < 0) {
+ ERROR("Can't open %s\n", buf);
+ } else {
+ snprintf(buf, sizeof(buf), SYS_CLASS_LEDS_PATH"/%s/max_brightness", dev->led_name);
+ dev->file_max_brightness = open(buf, O_RDONLY);
+ if (dev->file_max_brightness < 0) {
+ ERROR("Can't open %s\n", buf);
+ } else {
+ return dev;
+ }
+ close(dev->file_brightness);
+ }
+ free(dev);
+ dev = NULL;
+ }
+
+ return NULL;
+}
+
+/*------------------------------------------------------------------------------*/
+
+int32_t as_led_close(struct as_led_device *a_led_dev)
+{
+ if(a_led_dev == NULL){
+ ERROR("device is NULL\n");
+ return -1;
+ }
+ close(a_led_dev->file_max_brightness);
+ close(a_led_dev->file_brightness);
+ free(a_led_dev);
+ return 0;
+}
+
+/*------------------------------------------------------------------------------*/
+
+int32_t as_led_get_max_brightness(struct as_led_device *a_led_dev)
+{
+ int32_t result;
+
+ if (0 == as_read_int(a_led_dev->file_max_brightness, &result)) {
+ return result;
+ }
+ return -1;
+}
+
+/*------------------------------------------------------------------------------*/
+
+int32_t as_led_set_brightness(struct as_led_device *a_led_dev, uint32_t a_brightness)
+{
+ return as_write_buffer(a_led_dev->file_brightness, a_brightness);
+}
+
+/*------------------------------------------------------------------------------*/
+
+int32_t as_led_get_brightness(struct as_led_device *a_led_dev)
+{
+ int32_t result;
+
+ if (0 == as_read_int(a_led_dev->file_brightness, &result)) {
+ return result;
+ }
+ return -1;
+}
+
+/*------------------------------------------------------------------------------*/
+
+int32_t as_led_start_blinking(struct as_led_device *a_led_dev,
+ int32_t a_delay_on, int32_t a_delay_off)
+{
+ char buf[64];
+ int32_t length;
+ int32_t result = -1;
+
+ if (led_echo(a_led_dev, "trigger", "timer\n", 6) == 0) {
+ length = snprintf(buf, sizeof(buf), "%d\n", a_delay_on);
+ if (length > 0
+ && led_echo(a_led_dev, "delay_on", buf, length) == 0) {
+ length = snprintf(buf, sizeof(buf), "%d\n", a_delay_off);
+ if (length > 0
+ && led_echo(a_led_dev, "delay_off", buf, length) == 0) {
+ result = 0;
+ }
+ }
+ }
+ return result;
+}
+
+/*------------------------------------------------------------------------------*/
+
+int32_t as_led_stop_blinking(struct as_led_device *a_led_dev)
+{
+ if (led_echo(a_led_dev, "trigger", "none\n", 5) == 0) {
+ return 0;
+ }
+ return -1;
+}
+
diff --git a/target/packages/as_devices/c/as_led.h b/target/packages/as_devices/c/as_led.h
new file mode 100644
index 0000000..b9ae389
--- /dev/null
+++ b/target/packages/as_devices/c/as_led.h
@@ -0,0 +1,105 @@
+/*
+** The ARMadeus Project
+**
+** Copyright (C) 2013 The armadeus systems team
+** Sébastien Royen <seb...@ar...>
+**
+** This library is free software; you can redistribute it and/or
+** modify it under the terms of the GNU Lesser General Public
+** License as published by the Free Software Foundation; either
+** version 2.1 of the License, or (at your option) any later version.
+**
+** This library 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
+** Lesser General Public License for more details.
+**
+** You should have received a copy of the GNU Lesser General Public
+** License along with this library; if not, write to the Free Software
+** Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+*/
+
+#ifndef __ASLED_H__
+#define __ASLED_H__
+
+#include <stdint.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+
+
+/**
+ * Store led parameters
+ */
+struct as_led_device {
+ char led_name[32];
+ int file_brightness;
+ int file_max_brightness;
+};
+
+
+/** @brief Initialize led access
+ *
+ * @param a_led_name char* name of the led
+ *
+ * @return NULL on error
+ */
+struct as_led_device *as_led_open(char *a_led_name);
+
+/** @brief Close led access
+ *
+ * @param a_led_dev as_led_device pointer structure
+ *
+ * @return error if negative
+ */
+int32_t as_led_close(struct as_led_device *a_led_dev);
+
+/** @brief Get max brightness
+ *
+ * @param a_led_dev as_led_device pointer structure
+ *
+ * @return maximum allowed brightness, negative value on error
+ */
+int32_t as_led_get_max_brightness(struct as_led_device *a_led_dev);
+
+/** @brief Set brightness
+ *
+ * @param a_led_dev as_led_device pointer structure
+ * @param a_brightness uint32_t requested value for led brighthness
+ *
+ * @return current brightness, negative value on error
+ */
+int32_t as_led_set_brightness(struct as_led_device *a_led_dev, uint32_t a_brightness);
+
+/** @brief Get brightness
+ *
+ * @param a_led_dev as_led_device pointer structure
+ *
+ * @return current brightness, negative value on error
+ */
+int32_t as_led_get_brightness(struct as_led_device *a_led_dev);
+
+/** @brief Make a led blinking
+ *
+ * @param a_led_dev as_led_device pointer structure
+ * @param a_delay_on uint32_t value for led on time
+ * @param a_delay_off uint32_t value for led off time
+ *
+ * @return negative value on error
+ */
+int32_t as_led_start_blinking(struct as_led_device *a_led_dev, int32_t a_delay_on, int32_t a_delay_off);
+
+/** @brief Led stop blinking
+ *
+ * @param a_led_dev as_led_device pointer structure
+ *
+ * @return negative value on error
+ */
+int32_t as_led_stop_blinking(struct as_led_device *a_led_dev);
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+#endif /* __ASLED_H__ */
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armadeus
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