X-Git-Url: https://git.realraum.at/?a=blobdiff_plain;f=rf433rcv%2Fteensy%2Fexample.c;h=649b207b7a84a85004c5af0e3ab31076e7cf1197;hb=1d25e73e3d6d789b52433afee4ab3a1f70019912;hp=635b16f613bc97f797305e92f0207f7c655b1aac;hpb=deb2b278d460a716e0e2d8be370b1ee8f8963e34;p=svn42.git

diff --git a/rf433rcv/teensy/example.c b/rf433rcv/teensy/example.c
index 635b16f..649b207 100644
--- a/rf433rcv/teensy/example.c
+++ b/rf433rcv/teensy/example.c
@@ -26,83 +26,53 @@
 #include <avr/interrupt.h>
 #include <util/delay.h>
 #include "usb_rawhid.h"
-#include "analog.h"
 
 #define CPU_PRESCALE(n)	(CLKPR = 0x80, CLKPR = (n))
 
 volatile uint8_t do_output=0;
-uint8_t buffer[64];
+uint8_t read_buffer[64];
+uint8_t write_buffer[64];
 
 int main(void)
 {
-	int8_t r;
-	uint8_t i;
-	uint16_t val, count=0;
+  int8_t r;
+  uint8_t i;
+  uint16_t val, count=0;
 
-	// set for 16 MHz clock
-	CPU_PRESCALE(0);
+  // set for 16 MHz clock
+  CPU_PRESCALE(0);
+  DDRF|=3;
+  PORTF&=~1;
+  // Configure timer 0 to generate a timer overflow interrupt every
+  // 200*8 clock cycles, 100us
+  TCCR0A = 1<<WGM01;
+  TCCR0B = 1<<CS01;
+  OCR0A = 199;
+  TCNT0 = 0;
+  TIMSK0 = (1<<OCIE0A);
 
-	// Initialize the USB, and then wait for the host to set configuration.
-	// If the Teensy is powered without a PC connected to the USB port,
-	// this will wait forever.
-	usb_init();
-	while (!usb_configured()) /* wait */ ;
+  // Initialize the USB, and then wait for the host to set configuration.
+  // If the Teensy is powered without a PC connected to the USB port,
+  // this will wait forever.
+  usb_init();
+  while (!usb_configured()) /* wait */ ;
+  // Wait an extra second for the PC's operating system to load drivers
+  // and do whatever it does to actually be ready for input
+  _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);
 
-	// Wait an extra second for the PC's operating system to load drivers
-	// and do whatever it does to actually be ready for input
-	_delay_ms(1000);
-
-        // Configure timer 0 to generate a timer overflow interrupt every
-        // 256*1024 clock cycles, or approx 61 Hz when using 16 MHz clock
-        TCCR0A = 0x00;
-        TCCR0B = 0x05;
-        TIMSK0 = (1<<TOIE0);
-
-	while (1) {
-		// if received data, do something with it
-		r = usb_rawhid_recv(buffer, 0);
-		if (r > 0) {
-			// output 4 bits to D0, D1, D2, D3 pins
-			DDRD = 0x0F;
-			PORTD = (PORTD & 0xF0) | (buffer[0] & 0x0F);
-			// ignore the other 63.5 bytes....
-		}
-		// if time to send output, transmit something interesting
-		if (do_output) {
-			do_output = 0;
-			// send a packet, first 2 bytes 0xABCD
-			buffer[0] = 0xAB;
-			buffer[1] = 0xCD;
- 			// put A/D measurements into next 24 bytes
-			for (i=0; i<12; i++) {
-				val = analogRead(i);
-				buffer[i * 2 + 2] = val >> 8;
-				buffer[i * 2 + 3] = val & 255;
-			}
-			// most of the packet filled with zero
-			for (i=26; i<62; i++) {
-				buffer[i] = 0;
-			}
-			// put a count in the last 2 bytes
-			buffer[62] = count >> 8;
-			buffer[63] = count & 255;
-			// send the packet
-			usb_rawhid_send(buffer, 50);
-			count++;
-		}
-	}
+  }
 }
 
 // This interrupt routine is run approx 61 times per second.
-ISR(TIMER0_OVF_vect)
+ISR(TIMER0_COMPA_vect)
 {
-	static uint8_t count=0;
+  PORTF^=2;
 
-	// set the do_output variable every 2 seconds
-	if (++count > 122) {
-		count = 0;
-		do_output = 1;
-	}
 }