From 4f80330bae049dec0e69433a0e87c5427553febe Mon Sep 17 00:00:00 2001
From: Sadeep Madurange <sadeep@asciimx.com>
Date: Sat, 17 May 2025 10:57:12 +0800
Subject: Rename files and use -f flag in rm.

---
 lock/fend.c | 160 ------------------------------------------------------------
 1 file changed, 160 deletions(-)
 delete mode 100644 lock/fend.c

(limited to 'lock/fend.c')

diff --git a/lock/fend.c b/lock/fend.c
deleted file mode 100644
index 1d1fe12..0000000
--- a/lock/fend.c
+++ /dev/null
@@ -1,160 +0,0 @@
-/* Lock front, connected to the fingerprint scanner */
-
-#include <stdint.h>
-#include <stdlib.h>
-
-#include <avr/wdt.h>
-#include <avr/sleep.h>
-#include <avr/interrupt.h>
-#include <util/delay.h>
-
-#include "fpm.h"
-#include "nrfm.h"
-#include "util.h"
-
-#define LOCK_PIN      PD2
-#define UNLOCK_PIN    PD3
-
-#define RX_IRQ_PIN    PC1
-#define RX_DDR        DDRC
-#define RX_PIN        PINC
-#define RX_ICR        PCICR 
-#define RX_IE         PCIE1
-#define RX_INT        PCINT9
-#define RX_MSK        PCMSK1
-#define RX_INTVEC     PCINT1_vect
-
-#define VCC_MIN       4000
-
-static volatile uint8_t rxd = 0;
-static volatile uint8_t sync = 0;
-static volatile uint8_t islock = 0;
-static volatile uint8_t isunlock = 0;
-
-static inline void wdt_off(void)
-{
-	cli();
-	wdt_reset();
-	MCUSR &= ~(1 << WDRF);
-	WDTCSR |= (1 << WDCE) | (1 << WDE);
-	WDTCSR = 0x00;
-}
-
-static inline void init_rx(void)
-{
-	RX_DDR &= ~(1 << RX_IRQ_PIN);
-	RX_ICR |= (1 << RX_IE);
-	RX_MSK |= (1 << RX_INT);
-}
-
-static inline void init_btns(void)
-{
-	DDRD &= ~((1 << LOCK_PIN) | (1 << UNLOCK_PIN));
-	PORTD |= ((1 << LOCK_PIN) | (1 << UNLOCK_PIN));
-
-	EICRA = 0b00000000;
-	EIMSK = (1 << INT0) | (1 << INT1);
-}
-
-int main(void)
-{
-	int i, retries;
-	uint8_t rxaddr[ADDRLEN] = { 194, 178, 82 };
-	uint8_t txaddr[ADDRLEN] = { 194, 178, 83 };
-
-	char buf[WDLEN], key[WDLEN];
-
-	wdt_off();
-	led_init();
-	fpm_init();
-
-	init_rx();
-	init_btns();
-
-	radio_init(rxaddr);
-
-	sei();
-	radio_listen();
-
-	for (;;) {
-		if (!sync && (islock || isunlock)) {
-			if (isunlock) {
-				if (!fpm_match()) {
-					isunlock = 0;
-					continue;
-				}
-			}
-
-			xor(KEY, SYN, buf, WDLEN);
-			retries = 0;
-			do {
-				sync = radio_sendto(txaddr, buf, WDLEN);
-				retries++;
-				_delay_ms(50);
-			} while (!sync && retries < 40);
-			
-			if (!sync) {
-				islock = 0;
-				isunlock = 0;
-			}
-		}
-
-		if (rxd) {
-			radio_recv(buf, WDLEN);
-			rxd = 0;
-			if (sync && (islock || isunlock)) {
-				sync = 0;
-				xor(KEY, buf, key, WDLEN);
-				if (islock) {
-					islock = 0;
-					xor(key, LOCK, buf, WDLEN);
-					if (radio_sendto(txaddr, buf, WDLEN))
-						led_locked();
-				} else if (isunlock) {
-					isunlock = 0;
-					xor(key, UNLOCK, buf, WDLEN);
-					if (radio_sendto(txaddr, buf, WDLEN))
-						led_unlocked();
-				}
-			}
-		}
-
-		if (!sync) {
-			if (getvcc() < VCC_MIN) {
-				for (i = 0; i < 5; i++) {
-					led_bat();
-					_delay_ms(100);
-				}
-			}
-
-			radio_pwr_dwn();
-			sleep_bod_disable();
-			set_sleep_mode(SLEEP_MODE_PWR_DOWN);
-			sleep_mode();
-			radio_listen();
-		}
-	}
-	return 0;
-}
-
-ISR(RX_INTVEC)
-{
-	if (!(RX_PIN & (1 << RX_IRQ_PIN)))
-		rxd = 1;
-}
-
-ISR(INT0_vect)
-{
-	if (is_btn_pressed(PIND, LOCK_PIN)) {
-		sync = 0;
-		islock = 1;
-	}
-}
-
-ISR(INT1_vect)
-{
-	if (is_btn_pressed(PIND, UNLOCK_PIN)) {
-		sync = 0;
-		isunlock = 1;
-	}
-}
-- 
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