Initial import of support files for all Digistump boards - Digispark, Pro, DigiX - including libraries, examples, tools, and other support files for the Arduino IDE

2025-09-18 01:42:26 -07:00 · 2014-12-19 08:45:50 -08:00
parent 97abdbf157
commit 7e7473a2d6
3567 changed files with 722870 additions and 0 deletions
--- a/hardware/digistump/sam/libraries/RF24/examples/scanner/scanner.pde
+++ b/hardware/digistump/sam/libraries/RF24/examples/scanner/scanner.pde
@@ -0,0 +1,124 @@
+/*
+ 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.
+ */
+
+/**
+ * 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 <SPI.h>
+#include "nRF24L01.h"
+#include "RF24.h"
+#include "printf.h"
+
+//
+// Hardware configuration
+//
+
+// Set up nRF24L01 radio on SPI bus plus pins 9 & 10
+
+RF24 radio(53,52);
+
+//
+// Channel info
+//
+
+const uint8_t num_channels = 128;
+uint8_t values[num_channels];
+
+//
+// Setup
+//
+
+void setup(void)
+{
+  //
+  // Print preamble
+  //
+
+  Serial.begin(57600);
+  printf_begin();
+  printf("\n\rRF24/examples/scanner/\n\r");
+
+  //
+  // Setup and configure rf radio
+  //
+
+  radio.begin();
+  radio.setAutoAck(false);
+
+  // Get into standby mode
+  radio.startListening();
+  radio.stopListening();
+
+  // Print out header, high then low digit
+  int i = 0;
+  while ( i < num_channels )
+  {
+    printf("%x",i>>4);
+    ++i;
+  }
+  printf("\n\r");
+  i = 0;
+  while ( i < num_channels )
+  {
+    printf("%x",i&0xf);
+    ++i;
+  }
+  printf("\n\r");
+}
+
+//
+// Loop
+//
+
+const int num_reps = 100;
+
+void loop(void)
+{
+  // 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
+  int i = 0;
+  while ( i < num_channels )
+  {
+    printf("%x",min(0xf,values[i]&0xf));
+    ++i;
+  }
+  printf("\n\r");
+}
+
+// vim:ai:cin:sts=2 sw=2 ft=cpp