seniordesign-firmware Changeset - 9716361162e0

Changeset - 9716361162e0

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ethanzonca@CL-SEC241-08.cedarville.edu - 12 years ago 2012-11-08 15:40:33
ethanzonca@CL-SEC241-08.cedarville.edu

ax25 implementation complete (compiles)

5 files changed with 27 insertions and 6 deletions:

master/master/config.h

master/master/lib/afsk.c

master/master/lib/afsk.h

master/master/lib/ax25.c

master/master/lib/ax25.h

0 comments (0 inline, 0 general)

master/master/config.h

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 /*
  * config.h
+ *
  * Created: 10/25/2012 3:28:22 PM
  *  Author: ethanzonca
  */
 #ifndef CONFIG_H_
 #define CONFIG_H_
 #define F_CPU 11059200
 #define MODULE_ID '1'
 // --------------------------------------------------------------------------
 // AX.25 config (ax25.c)
 // --------------------------------------------------------------------------
 // TX delay in milliseconds
 #define TX_DELAY      300
 // Maximum packet delay
 #define MAX_PACKET_LEN 512  // bytes
 #endif /* CONFIG_H_ */
@@ \ No newline at end of file @@

master/master/lib/afsk.c

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 /*
  * fsk.c
+ *
  * Created: 10/29/2012 7:40:34 PM
  *  Author: ethanzonca
  */
 #define F_CPU 11059200
 #include "../config.h"
 #include <stdint.h>
 #include <stdbool.h>
 #include <avr/io.h>
 #include <avr/interrupt.h>
 #include <util/delay.h>
 #include <avr/pgmspace.h>
 PROGMEM extern const uint8_t afsk_sine_table[512] = {
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master/master/lib/afsk.h

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 /*
  * afsk.h
+ *
  * Created: 10/29/2012 7:43:03 PM
  *  Author: ethanzonca
  */
 #ifndef AFSK_H_
 #define AFSK_H_
 // Private
 void afsk_output_sample(uint8_t s);
 void afsk_timer_stop();
 // Public
 void afsk_setup();
 void afsk_test();
 void afsk_send(const uint8_t *buffer, int len);
 int afsk_busy();
 void afsk_start();
 #endif /* AFSK_H_ */
@@ \ No newline at end of file @@

master/master/lib/ax25.c

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 /*
  * ax25.c
+ *
  * Created: 10/30/2012 12:16:41 PM
  *  Author: ethanzonca
  */
-/*
 #include <inttypes.h>
 #include "../config.h"
 #include "ax25.h"
 #include "afsk.h"
 // Module constants
 #define MAX_PACKET_LEN 512  // bytes
 // Module globals
 static uint16_t crc;
 static uint8_t ones_in_a_row;
 static uint8_t packet[MAX_PACKET_LEN];
 static unsigned int packet_size;
 // Module functions
 void update_crc(uint8_t a_bit)
+{
 	crc ^= a_bit;
 	if (crc & 1)
 	crc = (crc >> 1) ^ 0x8408;  // X-modem CRC poly
 	else
 	crc = crc >> 1;
+}
 void send_byte(uint8_t a_byte)
+{
 	uint8_t i = 0;
 	while (i++ < 8) {
 		uint8_t a_bit = a_byte & 1;
 		a_byte >>= 1;
 		update_crc(a_bit);
 		if (a_bit) {
@@ @@ -113,25 +112,24 @@ void ax25_send_header(const struct s_add @@
 	// Protocol ID: 0xf0 = no layer 3 data
 	send_byte(0xf0);
+}
 void ax25_send_footer()
+{
 	// Save the crc so that it can be treated it atomically
 	uint16_t final_crc = crc;
 	// Send the CRC
 	send_byte(~(final_crc & 0xff));
 	final_crc >>= 8;
 	send_byte(~(final_crc & 0xff));
 	// Signal the end of frame
 	ax25_send_flag();
+}
 void ax25_flush_frame()
+{
 	// Key the transmitter and send the frame
 	afsk_send(packet, packet_size);
 	afsk_start();
+}
 */
@@ \ No newline at end of file @@

master/master/lib/ax25.h

➞

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 /*
  * ax25.h
+ *
  * Created: 10/30/2012 12:14:05 PM
  *  Author: ethanzonca
  */
 #ifndef AX25_H_
 #define AX25_H_
 struct s_address {
 	char callsign[7];
 	unsigned char ssid;
 };
 void ax25_send_byte(uint8_t a_byte);
 void ax25_send_flag();
 void ax25_send_string(const char *string);
 void ax25_send_header(const struct s_address *addresses, int num_addresses);
 void ax25_send_footer();
 void ax25_flush_frame();
 #endif /* AX25_H_ */
@@ \ No newline at end of file @@

0 comments (0 inline, 0 general)