From 8913f64d481a3da19d7e03b619605dc67eaf0591 Mon Sep 17 00:00:00 2001
From: guowenxue <guowenxue@gmail.com>
Date: Wed, 21 Apr 2021 22:22:08 +0800
Subject: [PATCH] update infrared test.c
---
modules/c/infrared.c | 87 ++++++++++++++++++++++++++++++++++++++++++-
1 files changed, 84 insertions(+), 3 deletions(-)
diff --git a/modules/c/infrared.c b/modules/c/infrared.c
index 3ebbb99..868638d 100644
--- a/modules/c/infrared.c
+++ b/modules/c/infrared.c
@@ -5,6 +5,14 @@
* Filename: infrared.c
* Description: This file
*
+ * pi@raspberrypi:~ $ gpio readall #show BCM and wPi pinmap
+ *
+ * PIN #PIN BCM wPi
+ * VCC(left) ---- 2 ---- 5v ---- 5v
+ * I/O(indoor) ---- 16 ---- 23 ---- 4
+ * I/O(hallway) ---- 18 ---- 24 ---- 5
+ * GND(right) ---- 34 ---- 0v ---- 0v
+ *
* Version: 1.0.0(30/01/19)
* Author: Guo Wenxue <guowenxue@gmail.com>
* ChangeLog: 1, Release initial version on "30/01/19 03:37:16"
@@ -13,10 +21,17 @@
#include <stdio.h>
#include <unistd.h>
+#include <errno.h>
+#include <string.h>
+
+//#define CONFIG_USE_WIRINGPI
+
+#ifdef CONFIG_USE_WIRINGPI
+
#include <wiringPi.h>
-/*Monitor RPi I/O Pin connected to PIN#38, and wPi pin number is 28 */
-#define INFRARED_PIN 28
+#define INFRARED_PIN 4
+//#define INFRARED_PIN 5
int main (int argc, char **argv)
{
@@ -29,7 +44,73 @@
sleep(1);
}
-
return 0;
}
+#else
+
+#include <gpiod.h>
+
+#define INFRARED_PIN 23
+//#define INFRARED_PIN 24
+
+int main (int argc, char **argv)
+{
+ struct gpiod_chip* chip;
+ struct gpiod_line* line;
+ int rv = 0;
+ struct gpiod_line_event event;
+
+ chip = gpiod_chip_open_by_name("gpiochip0");
+ if( !chip )
+ {
+ printf("gpiod open chip failure, maybe you need running as root\n");
+ return 1;
+ }
+
+ line = gpiod_chip_get_line(chip, INFRARED_PIN);
+ if( !line )
+ {
+ printf("gpiod get line[%d] failure\n", INFRARED_PIN);
+ rv = 2;
+ goto cleanup;
+ }
+
+
+ //if( gpiod_line_request_rising_edge_events(line, "infrared") < 0 )
+ if( gpiod_line_request_falling_edge_events(line, "infrared") < 0 )
+ {
+ printf("gpiod request rising edge event failure: %s\n", strerror(errno));
+ rv = 3;
+ goto cleanup;
+ }
+
+ while(1)
+ {
+ /* This function will block, must call it to setup */
+ printf("Start gpiod_line_event_wait...\n");
+ if( gpiod_line_event_wait(line, NULL) < 0 )
+ {
+ printf("gpiod line wait event failure!\n");
+ }
+
+ /* This function will block, must read to clear the event */
+ printf("Start gpiod_line_event_read...\n");
+ if (gpiod_line_event_read(line, &event) < 0)
+ {
+ printf("gpiod line wait event failure!\n");
+ }
+
+ if (event.event_type == GPIOD_LINE_EVENT_RISING_EDGE)
+ {
+ printf("Infrared monitor: Someone is closing!\n");
+ }
+ }
+
+cleanup:
+ gpiod_chip_close(chip);
+ return rv;
+}
+
+
+#endif
--
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