From d0a9532e1425c6052ac7221c45433a48bf43ba50 Mon Sep 17 00:00:00 2001
From: guowenxue <guowenxue@gmail.com>
Date: Sat, 09 Jan 2021 16:17:56 +0800
Subject: [PATCH] update led and infrared source code
---
modules/c/infrared.c | 77 +++++++++++++++++++++++++++++++++++++-
1 files changed, 75 insertions(+), 2 deletions(-)
diff --git a/modules/c/infrared.c b/modules/c/infrared.c
index 6475fc3..25cd18a 100644
--- a/modules/c/infrared.c
+++ b/modules/c/infrared.c
@@ -5,6 +5,13 @@
* 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(mid) ---- 32 ---- 12 ---- 26
+ * 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 +20,13 @@
#include <stdio.h>
#include <unistd.h>
+
+
+#ifdef CONFIG_USE_WIRINGPI
+
#include <wiringPi.h>
-/* I/O Pin connected to PIN#16, BCM code pin number is 23 and wPi pin number is 4 */
-#define INFRARED_PIN 4
+#define INFRARED_PIN 26
int main (int argc, char **argv)
{
@@ -33,3 +43,66 @@
return 0;
}
+#else
+
+#include <gpiod.h>
+
+#define INFRARED_PIN 12
+
+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 )
+ {
+ printf("gpiod request rising edge event failure\n");
+ rv = 3;
+ goto cleanup;
+ }
+
+ while(1)
+ {
+ /* This function will block, must call it to setup */
+ 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 */
+ 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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