From be98d13782b05e7659f601980ef695a493d6bee1 Mon Sep 17 00:00:00 2001
From: guowenxue <guowenxue@gmail.com>
Date: Wed, 21 Aug 2024 17:29:28 +0800
Subject: [PATCH] Add infrared source code
---
hal/api/led.h | 8 -
hal/api/infrared.h | 60 ++++++++
hal/api/relay.c | 6
hal/api/relay.h | 7 -
hal/api/infrared.c | 307 +++++++++++++++++++++++++++++++++++++++++++
5 files changed, 371 insertions(+), 17 deletions(-)
diff --git a/hal/api/infrared.c b/hal/api/infrared.c
new file mode 100644
index 0000000..6aa2e36
--- /dev/null
+++ b/hal/api/infrared.c
@@ -0,0 +1,307 @@
+/*********************************************************************************
+ * Copyright: (C) 2024 LingYun IoT System Studio
+ * All rights reserved.
+ *
+ * Filename: infrared.h
+ * Description: This file is HC-SR501 infrared sensor code
+ *
+ * Pin connection:
+ * HC-SR501 Module IGKBoard-IMX6ULL
+ * VCC <-----> 5V
+ * I/O <-----> #Pin22(GPIO3_IO23)
+ * GND <-----> GND
+ *
+ ********************************************************************************/
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <dirent.h>
+#include <string.h>
+#include <time.h>
+#include <errno.h>
+#include <signal.h>
+#include <getopt.h>
+#include <libgen.h>
+
+#include "infrared.h"
+
+int g_stop = 0;
+
+static inline void msleep(unsigned long ms);
+void sig_handler(int signum);
+
+static void program_usage(const char *progname)
+{
+ printf("Usage: %s [OPTION]...\n", progname);
+ printf(" This is infrared detect program. \n");
+
+ printf(" -d[device ] Specify infrared device, such as 0\n");
+ printf(" -h[help ] Display this help information\n");
+
+ printf("\n");
+ printf("%s program Version v1.0.0\n", progname);
+ printf("Copyright (C) 2023 LingYun IoT System Studio.\n");
+
+ return;
+}
+
+int main(int argc, char **argv)
+{
+ char *progname=NULL;
+ int rv;
+ int which = -1;
+
+ struct option long_options[] = {
+ {"device", required_argument, NULL, 'd'},
+ {"help", no_argument, NULL, 'h'},
+ {NULL, 0, NULL, 0}
+ };
+
+ progname = basename(argv[0]);
+
+ /* Parser the command line parameters */
+ while ((rv = getopt_long(argc, argv, "d:h", long_options, NULL)) != -1)
+ {
+ switch (rv)
+ {
+ case 'd': /* Set infrared number, such as 0...max */
+ which = atoi(optarg);
+ break;
+
+
+ case 'h': /* Get help information */
+ program_usage(progname);
+ return 0;
+
+ default:
+ break;
+ }
+ }
+
+ if( (rv=init_infrared()) < 0 )
+ {
+ printf("initial infrared gpio failure, rv=%d\n", rv);
+ return 1;
+ }
+
+ signal(SIGINT, sig_handler);
+ signal(SIGTERM, sig_handler);
+
+ while( !g_stop )
+ {
+ rv = detect_infrared(which);
+ printf("Infrared[%d] monitor: %s\n", which, rv ? "Someone is closing!":"No one nearby!");
+ sleep(1);
+ }
+
+ term_infrared();
+ return 0;
+}
+
+/*+-------------------------------------+
+ *| Infrared API based on libgpiod v2.0 |
+ *+-------------------------------------+*/
+
+static infrared_t ir_info[IR_CNT] =
+{
+ {"IR1", 2, 23, IR_ACTIVE_HIGH, NULL}, /* #Pin22, GPIO3_IO23 on chip2 line 23, active high */
+};
+
+/* infrareds context */
+static infrareds_t infrareds =
+{
+ .infrareds = ir_info,
+ .count = IR_CNT,
+};
+
+int init_infrared(void)
+{
+ infrared_t *infrared;
+ int i, rv = 0;
+ char chip_dev[32];
+ struct gpiod_chip *chip; /* gpio chip */
+ struct gpiod_line_settings *settings; /* gpio direction, bias, active_low, value */
+ struct gpiod_line_config *line_cfg; /* gpio line */
+ struct gpiod_request_config *req_cfg; /* gpio consumer, it can be NULL */
+
+ /* defined in libgpiod-2.0/lib/line-settings.c:
+
+ struct gpiod_line_settings {
+ enum gpiod_line_direction direction;
+ enum gpiod_line_edge edge_detection;
+ enum gpiod_line_drive drive;
+ enum gpiod_line_bias bias;
+ bool active_low;
+ enum gpiod_line_clock event_clock;
+ long debounce_period_us;
+ enum gpiod_line_value output_value;
+ };
+ */
+ settings = gpiod_line_settings_new();
+ if (!settings)
+ {
+ printf("unable to allocate line settings\n");
+ rv = -2;
+ goto cleanup;
+ }
+
+ /* defined in libgpiod-2.0/lib/line-config.c
+
+ struct gpiod_line_config {
+ struct per_line_config line_configs[LINES_MAX];
+ size_t num_configs;
+ enum gpiod_line_value output_values[LINES_MAX];
+ size_t num_output_values;
+ struct settings_node *sref_list;
+ };
+ */
+
+ line_cfg = gpiod_line_config_new();
+ if (!line_cfg)
+ {
+ printf("unable to allocate the line config structure");
+ rv = -2;
+ goto cleanup;
+ }
+
+
+ /* defined in libgpiod-2.0/lib/request-config.c:
+
+ struct gpiod_request_config {
+ char consumer[GPIO_MAX_NAME_SIZE];
+ size_t event_buffer_size;
+ };
+ */
+ req_cfg = gpiod_request_config_new();
+ if (!req_cfg)
+ {
+ printf("unable to allocate the request config structure");
+ rv = -2;
+ goto cleanup;
+ }
+
+ for(i=0; i<infrareds.count; i++)
+ {
+ infrared = &infrareds.infrareds[i];
+
+ snprintf(chip_dev, sizeof(chip_dev), "/dev/gpiochip%d", infrared->chip_num);
+ chip = gpiod_chip_open(chip_dev);
+ if( !chip )
+ {
+ printf("open gpiochip failure, maybe you need running as root\n");
+ rv = -3;
+ goto cleanup;
+ }
+
+ /* Set as input direction */
+ gpiod_line_settings_reset(settings);
+ gpiod_line_settings_set_direction(settings, GPIOD_LINE_DIRECTION_INPUT);
+
+ /* set gpio line */
+ gpiod_line_config_reset(line_cfg);
+ gpiod_line_config_add_line_settings(line_cfg, &infrared->gpio_num, 1, settings);
+
+ /* Can be NULL for default settings. */
+ gpiod_request_config_set_consumer(req_cfg, infrared->name);
+
+ /* Request a set of lines for exclusive usage. */
+ infrared->request = gpiod_chip_request_lines(chip, req_cfg, line_cfg);
+
+ gpiod_chip_close(chip);
+ //printf("request %5s infrared[%d] for gpio output okay\n", infrared->name, infrared->gpio);
+ }
+
+cleanup:
+
+ if( rv< 0 )
+ term_infrared();
+
+ if( line_cfg )
+ gpiod_line_config_free(line_cfg);
+
+ if( req_cfg )
+ gpiod_request_config_free(req_cfg);
+
+ if( settings )
+ gpiod_line_settings_free(settings);
+
+ return rv;
+}
+
+int term_infrared(void)
+{
+ infrared_t *infrared;
+ int i;
+
+ printf("terminate infrared gpios\n");
+
+ for(i=0; i<infrareds.count; i++)
+ {
+ infrared = &infrareds.infrareds[i];
+
+ if( infrared->request )
+ {
+ gpiod_line_request_release(infrared->request);
+ }
+ }
+
+ return 0;
+}
+
+int detect_infrared(int which)
+{
+ int rv = 0;
+ infrared_t *infrared;
+
+ if( which<0 || which>=infrareds.count )
+ {
+ printf("Invalid input arguments\n");
+ return 0;
+ }
+
+ infrared = &infrareds.infrareds[which];
+
+ return gpiod_line_request_get_value(infrared->request, infrared->gpio_num)==infrared->active ? 1 : 0;
+}
+
+/*+-------------------------------+
+ *| Misc functions API |
+ *+-------------------------------+*/
+
+static inline void msleep(unsigned long ms)
+{
+ struct timespec cSleep;
+ unsigned long ulTmp;
+
+ cSleep.tv_sec = ms / 1000;
+ if (cSleep.tv_sec == 0)
+ {
+ ulTmp = ms * 10000;
+ cSleep.tv_nsec = ulTmp * 100;
+ }
+ else
+ {
+ cSleep.tv_nsec = 0;
+ }
+
+ nanosleep(&cSleep, 0);
+
+ return ;
+}
+
+void sig_handler(int signum)
+{
+ switch( signum )
+ {
+ case SIGINT:
+ case SIGTERM:
+ g_stop = 1;
+
+ default:
+ break;
+ }
+
+ return ;
+}
+
diff --git a/hal/api/infrared.h b/hal/api/infrared.h
new file mode 100644
index 0000000..fb57c8e
--- /dev/null
+++ b/hal/api/infrared.h
@@ -0,0 +1,60 @@
+/*********************************************************************************
+ * Copyright: (C) 2024 LingYun IoT System Studio
+ * All rights reserved.
+ *
+ * Filename: infrared.h
+ * Description: This file is HC-SR501 infrared sensor code
+ *
+ * Pin connection:
+ * HC-SR501 Module IGKBoard-IMX6ULL
+ * VCC <-----> 5V
+ * I/O <-----> #Pin37(GPIO5_IO09)
+ * GND <-----> GND
+ *
+ ********************************************************************************/
+
+#ifndef _INFRARED_H_
+#define _INFRARED_H_
+
+#include "gpiod.h"
+
+/* infrared number */
+enum
+{
+ IR1 = 0,
+ IR_CNT,
+};
+
+enum
+{
+ IR_ACTIVE_LOW, /* Low level active */
+ IR_ACTIVE_HIGH, /* High level active */
+};
+
+/* infrared hardware information */
+typedef struct infrared_s
+{
+ const char *name; /* infrared name */
+ int chip_num; /* infrared connect chip */
+ int gpio_num; /* infrared connect line */
+ int active; /* infrared active level */
+ struct gpiod_line_request *request; /* libgpiod gpio request handler */
+} infrared_t;
+
+/* infrared structure */
+typedef struct infrareds_s
+{
+ infrared_t *infrareds;/* infrared pointer to infrareds_info */
+ int count; /* infrared count */
+} infrareds_t;
+
+/* initial infrareds */
+int init_infrared(void);
+
+/* terminate infrareds */
+int term_infrared(void);
+
+/* detect infrareds */
+int detect_infrared(int which);
+
+#endif
diff --git a/hal/api/led.h b/hal/api/led.h
index 4f2937c..f2105ad 100644
--- a/hal/api/led.h
+++ b/hal/api/led.h
@@ -5,14 +5,6 @@
* Filename: led.h
* Description: This file is used to control RGB 3-colors LED
*
- *
- * Pin connection:
- * RGB Led Module IGKBoard-IMX6ULL
- * R <-----> #Pin36 (GPIO1_IO11)
- * G <-----> #Pin38 (GPIO1_IO10)
- * B <-----> #Pin40 (GPIO5_IO09)
- * GND <-----> GND
- *
********************************************************************************/
#ifndef _LED_H_
diff --git a/hal/api/relay.c b/hal/api/relay.c
index 4d14ae2..b7bb24d 100644
--- a/hal/api/relay.c
+++ b/hal/api/relay.c
@@ -9,7 +9,7 @@
* Pin connection:
* Relay Module IGKBoard-IMX6ULL
* VCC <-----> 5V
- * I <-----> #Pin22 (GPIO3_IO23)
+ * I <-----> #Pin37 (GPIO5_IO08)
* GND <-----> GND
*
********************************************************************************/
@@ -92,6 +92,8 @@
turn_relay(which, status);
+ term_relay();
+
return 0;
}
@@ -102,7 +104,7 @@
static relay_t relays_info[RELAY_CNT] =
{
- {"relay1", 2, 23, ACTIVE_HIGH, 0, NULL}, /* #Pin22, GPIO3_IO23 on chip2 line 23, active high */
+ {"relay1", 4, 8, ACTIVE_HIGH, 0, NULL}, /* #Pin37, GPIO5_IO08 on chip4 line 8, active high */
};
/* relays context */
diff --git a/hal/api/relay.h b/hal/api/relay.h
index c03cd9f..bf678b2 100644
--- a/hal/api/relay.h
+++ b/hal/api/relay.h
@@ -5,13 +5,6 @@
* Filename: relay.h
* Description: This file is used to control relay
*
- *
- * Pin connection:
- * Relay Module IGKBoard-IMX6ULL
- * VCC <-----> 5V
- * I <-----> #Pin22 (GPIO3_IO23)
- * GND <-----> GND
- *
********************************************************************************/
#ifndef _RELAY_H_
--
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