初始化提交

2024-07-20 22:09:06 +08:00
commit c247dd07a6
6876 changed files with 2743096 additions and 0 deletions
--- a/arduino-cli/libraries/RF24/examples_linux/extra/scanner.cpp
+++ b/arduino-cli/libraries/RF24/examples_linux/extra/scanner.cpp
@@ -0,0 +1,137 @@
+/*
+ Copyright (C) 2011 J. Coliz <maniacbug@ymail.com>
+
+ This program is free software; you can redistribute it and/or
+ modify it under the terms of the GNU General Public License
+ version 2 as published by the Free Software Foundation.
+ 
+ 
+ 03/17/2013 : Charles-Henri Hallard (http://hallard.me)
+              Modified to use with Arduipi board http://hallard.me/arduipi
+						  Changed to use modified bcm2835 and RF24 library 
+
+ */
+
+/**
+ * Channel scanner
+ *
+ * Example to detect interference on the various channels available.
+ * This is a good diagnostic tool to check whether you're picking a
+ * good channel for your application.
+ *
+ * Inspired by cpixip.
+ * See http://arduino.cc/forum/index.php/topic,54795.0.html
+ */
+
+#include <cstdlib>
+#include <iostream>
+#include <RF24/RF24.h>
+
+using namespace std;
+
+//
+// Hardware configuration
+//
+
+// CE Pin, CSN Pin, SPI Speed
+
+// Setup for GPIO 22 CE and GPIO 25 CSN with SPI Speed @ 1Mhz
+//RF24 radio(RPI_V2_GPIO_P1_22, RPI_V2_GPIO_P1_18, BCM2835_SPI_SPEED_1MHZ);
+
+// Setup for GPIO 22 CE and CE0 CSN with SPI Speed @ 4Mhz
+//RF24 radio(RPI_V2_GPIO_P1_15, BCM2835_SPI_CS0, BCM2835_SPI_SPEED_4MHZ); 
+
+// Setup for GPIO 22 CE and CE1 CSN with SPI Speed @ 8Mhz
+//RF24 radio(RPI_V2_GPIO_P1_15, RPI_V2_GPIO_P1_24, BCM2835_SPI_SPEED_8MHZ);  
+
+// Generic setup
+RF24 radio(22, 0);
+
+//
+// Channel info
+//
+const uint8_t num_channels = 126;
+uint8_t values[num_channels];
+
+const int num_reps = 100;
+int reset_array = 0;
+
+int main(int argc, char** argv)
+{
+    //
+    // Print preamble
+    //
+
+    //Serial.begin(115200);
+    //printf_begin();
+    printf("RF24/examples/scanner/\n");
+
+    //
+    // Setup and configure rf radio
+    //
+    radio.begin();
+
+    radio.setAutoAck(false);
+
+    // Get into standby mode
+    radio.startListening();
+    radio.stopListening();
+
+    radio.printDetails();
+
+    // Print out header, high then low digit
+    int i = 0;
+
+    while (i < num_channels) {
+        printf("%x", i >> 4);
+        ++i;
+    }
+    printf("\n");
+
+    i = 0;
+    while (i < num_channels) {
+        printf("%x", i & 0xf);
+        ++i;
+    }
+    printf("\n");
+
+    // forever loop
+    while (1) {
+        // Clear measurement values
+        memset(values, 0, sizeof(values));
+
+        // Scan all channels num_reps times
+        int rep_counter = num_reps;
+        while (rep_counter--) {
+
+            int i = num_channels;
+            while (i--) {
+
+                // Select this channel
+                radio.setChannel(i);
+
+                // Listen for a little
+                radio.startListening();
+                delayMicroseconds(128);
+                radio.stopListening();
+
+                // Did we get a carrier?
+                if (radio.testCarrier()) {
+                    ++values[i];
+                }
+            }
+        }
+
+        // Print out channel measurements, clamped to a single hex digit
+        i = 0;
+        while (i < num_channels) {
+            printf("%x", min(0xf, (values[i] & 0xf)));
+            ++i;
+        }
+        printf("\n");
+    }
+
+    return 0;
+}
+
+// vim:ai:cin:sts=2 sw=2 ft=cpp