From a9d16c55e719dc0e80ab2c0a8135549e1a46ca52 Mon Sep 17 00:00:00 2001
From: realraum <realraum@realraum.at>
Date: Mon, 12 Dec 2011 23:31:00 +0000
Subject: [PATCH] ifirst working version of rf433 reciever

---
 rf433rcv/pc/plot.py       |   11 +++++++++++
 rf433rcv/pc/rawhid_test.c |   21 +++++++++++++--------
 rf433rcv/teensy/example.c |   31 +++++++++++++++++++------------
 3 files changed, 43 insertions(+), 20 deletions(-)
 create mode 100755 rf433rcv/pc/plot.py

diff --git a/rf433rcv/pc/plot.py b/rf433rcv/pc/plot.py
new file mode 100755
index 0000000..e8d4cfa
--- /dev/null
+++ b/rf433rcv/pc/plot.py
@@ -0,0 +1,11 @@
+#!/usr/bin/env python
+
+import fileinput
+import numpy
+import pylab
+for datastr in fileinput.input():
+  data = numpy.array(datastr.split(","))
+  pylab.plot(range(len(data)),data)
+
+          
+pylab.show()
diff --git a/rf433rcv/pc/rawhid_test.c b/rf433rcv/pc/rawhid_test.c
index 7bea892..1b1b2c3 100644
--- a/rf433rcv/pc/rawhid_test.c
+++ b/rf433rcv/pc/rawhid_test.c
@@ -30,7 +30,7 @@ int main()
 			return -1;
 		}
 	}
-	printf("found rawhid device\n");
+//	printf("found rawhid device\n");
 
 	while (1) {
 		// check if any Raw HID packet has arrived
@@ -40,13 +40,18 @@ int main()
 			rawhid_close(0);
 			return 0;
 		}
-		if (num > 0) {
-			printf("\nrecv %d bytes:\n", num);
-			for (i=0; i<num; i++) {
-				printf("%02X ", buf[i] & 255);
-				if (i % 16 == 15 && i < num-1) printf("\n");
-			}
-			printf("\n");
+		if (num == 64) {
+		//	printf("\nrecv %d bytes:\n", num);
+			  for (i=0; i<64*8; i++) {
+          if (buf[i/8] & 0x80)
+          {
+            printf("1");
+          } else {
+            printf("0");
+          }
+          printf(",");
+          buf[i/8]<<=1;
+        }
 		}
 		// check if any input on stdin
 		while ((c = get_keystroke()) >= 32) {
diff --git a/rf433rcv/teensy/example.c b/rf433rcv/teensy/example.c
index 649b207..ab7026c 100644
--- a/rf433rcv/teensy/example.c
+++ b/rf433rcv/teensy/example.c
@@ -29,16 +29,14 @@
 
 #define CPU_PRESCALE(n)	(CLKPR = 0x80, CLKPR = (n))
 
-volatile uint8_t do_output=0;
+volatile uint16_t output_count=0;
+volatile uint8_t active_buffer=0;
+volatile uint8_t send_buffer=0;
 uint8_t read_buffer[64];
-uint8_t write_buffer[64];
+uint8_t write_buffer[2][64];
 
 int main(void)
 {
-  int8_t r;
-  uint8_t i;
-  uint16_t val, count=0;
-
   // set for 16 MHz clock
   CPU_PRESCALE(0);
   DDRF|=3;
@@ -61,10 +59,13 @@ int main(void)
   _delay_ms(1000);
   while (1) {
     // if received data, do something with it
-    r = usb_rawhid_recv(read_buffer, 0);
-    if (r>0)
-      usb_rawhid_send(read_buffer, 50);
-
+    //r = usb_rawhid_recv(read_buffer, 0);
+    //if (r>0)
+    if (send_buffer)
+    {
+      send_buffer=0;
+      usb_rawhid_send(write_buffer[active_buffer?0:1], 45);
+    }
   }
 }
 
@@ -72,8 +73,14 @@ int main(void)
 ISR(TIMER0_COMPA_vect)
 {
   PORTF^=2;
-
+  write_buffer[active_buffer][output_count/8]<<=1;
+  write_buffer[active_buffer][output_count++/8]|=PINB&1;
+  if (output_count>=64*8)
+  {
+    output_count=0;
+    active_buffer=active_buffer?0:1;
+    send_buffer=1;
+  }
 }
 
 
-
-- 
1.7.10.4