# HG changeset patch
# User Malte Bayer <mbayer@neo-soft.org>
# Date 1387673459 -3600
# Node ID 1c3425af9aa09d8b62a3751429875f66b8d5a729
# Parent  08cb88614d69132799cc29862699b2cdaefee356
car firmware suspended, avr chip not responding after fuse error (note to self, never program an avr when powered via the SCK line :-)

diff -r 08cb88614d69 -r 1c3425af9aa0 car004f/Makefile
--- a/car004f/Makefile	Sun Dec 22 00:08:46 2013 +0100
+++ b/car004f/Makefile	Sun Dec 22 01:50:59 2013 +0100
@@ -92,7 +92,7 @@
 	$(AVRDUDE) -P $(PORT) -c stk500v2 -b $(ISP_BAUD) -i 1 -p $(MCU) -V -U flash:r:$(PRG)_backup.hex:i
 
 fuse:
-	$(AVRDUDE) -c stk500 -p $(MCU) -V $(FUSES)
+	$(AVRDUDE) $(PROGRAMMER) -p $(MCU) -V $(FUSES)
 
 clean:
 	rm -rf *.o *.elf *.elf.src *.s *.i
diff -r 08cb88614d69 -r 1c3425af9aa0 car004f/main.c
--- a/car004f/main.c	Sun Dec 22 00:08:46 2013 +0100
+++ b/car004f/main.c	Sun Dec 22 01:50:59 2013 +0100
@@ -19,9 +19,11 @@
 typedef struct  {
     uint8_t slot;
     uint8_t light;
-    unsigned program:1; // programming mode active
+    uint8_t program; // 0xff = inactive ; programming mode active on slot X
+    uint8_t initialized;
 } config_t;
-
+config_t EEMEM eeconfig = {0,0,0xff,0};
+config_t config;
 
 volatile uint16_t data = 0;
 volatile uint8_t data_len = 0;
@@ -36,7 +38,6 @@
 
 uint8_t my_switch;
 uint8_t my_speed;
-config_t config;
 
 ISR ( INT0_vect ) {
     GICR &= ~_BV(INT0) ; // Disable INT0
@@ -120,18 +121,21 @@
 #define BRAKE_PORT      PORTB
 #define BRAKE           0
 
-#define LIGHT_MODES     1       // anzahl der lichtmodi (ohne den modus "aus")
+#define LIGHT_MODES             1       // anzahl der lichtmodi (ohne den modus "aus")
+#define BRAKE_OFF_TIMEOUT       60      // value * 10ms
 
+#define CAR_DEBUG       1
+#define EE_CONFIG_ADDR  64
 
 void config_save(void) {
-    eeprom_write_block( (void*)&config, 0, sizeof(config) );
+    eeprom_write_block( &config, &eeconfig, sizeof(config_t) );
 }
 
 
 void brake_on(void) {
     LIGHT_PORT |= _BV(LIGHT_BRAKE); // brake light on
     BRAKE_PORT |= _BV(BRAKE); // brake on
-    brake_timeout = 50;
+    brake_timeout = BRAKE_OFF_TIMEOUT;
 }
 
 void brake_off(void) {
@@ -140,8 +144,46 @@
     brake_timeout = 0;
 }
 
+uint8_t scan_id(void) {
+    uint8_t temp;
+    timeout = 1;
+        // scan for any key press and assign to that controller
+        while (car_speed[config.slot] == 0) {
+            for (uint8_t i=0; i<6; i++) {
+                if (car_switch[i] == 1) {
+                    // wait for second key press within timeout period to assign successfully
+                    brake_timeout = 0xff;
+                    temp = car_switch[i];
+                    while (brake_timeout > 1) {
+                        if (temp != car_switch[i]) {
+                            temp = car_switch[i];
+                            if (temp == 1) {
+                                config.slot = i;
+                                return 1;
+                            }
+                        }
+                        // toggle lights if timeout
+                        if (timeout == 1) {
+                            LIGHT_PORT ^= _BV(LIGHT_FRONT);
+                            timeout = 5;
+                        }
+                    }
+                    return 0;
+                }
+            }
+            // toggle lights if timeout
+            if (timeout == 1) {
+                LIGHT_PORT ^= _BV(LIGHT_FRONT);
+                timeout = 10;
+            }
+        }
+    return 0;
+}
+
 int main(void)
 {
+    uint8_t temp;
+
     // setup data bit timer2
     TCCR2 = (1<<CS21) | (1<<WGM21); //divide by 8, set compare match
     OCR2 = TIMER2_50US;
@@ -156,10 +198,6 @@
     DDR(LIGHT_PORT) |= _BV(LIGHT_FRONT) | _BV(LIGHT_BRAKE);
     DDR(BRAKE_PORT) |= _BV(BRAKE);
 
-    // config (from eeprom!)
-    eeprom_read_block( (void*)&config, (const void*)0, sizeof(config) );
-
-
     TCCR1A = (1<<WGM10)|(1<<COM1A1)   // Set up the two Control registers of Timer1.
             |(1<<COM1B1);             // Wave Form Generation is Fast PWM 8 Bit,
 
@@ -171,6 +209,7 @@
     //OCR1B = 127;                      // Dutycycle of OC1B = 50%
     OCR1A = 0;
     OCR1B = 0;
+    DDRB &= ~_BV(2);                  // PB2 PWM Output disable
 
     // configure TIMER0 to overflow every 10ms at 4 MHz
     TIMSK = _BV(TOIE0);         // Timer0 Overflow INT erlauben
@@ -179,16 +218,56 @@
 
     sei();
 
+    // config (from eeprom!)
+    eeprom_read_block( &config, &eeconfig, sizeof(config_t) );
 
-config.slot = 1;
+
+#ifdef CAR_DEBUG
+    if (config.initialized == 0) {
+    LIGHT_PORT &= ~_BV(LIGHT_FRONT);
+    for (temp = 0; temp <= config.slot; temp++) {
+        LIGHT_PORT ^= _BV(LIGHT_FRONT);
+        _delay_ms(250);
+        LIGHT_PORT ^= _BV(LIGHT_FRONT);
+        _delay_ms(250);
+    }
+    }
+#endif
+
+
+
+    if (config.initialized != 0) {
+        config.slot = 0;
+        config.light = 0;
+        config.program = 0;
+        config.initialized = 0;
+        config_save();
+    }
+
+    if ((config.program != 0xff) || (config.slot > 5 )) {
+        temp = scan_id();
+        config.program = 0xff;
+        config_save();
+        if (temp == 1) {
+            // acknowledge with the engine
+            OCR1B = 25;
+            DDRB &= ~_BV(2);                  // PB2 PWM Output disable
+            for (temp = 0xff; temp > 0; temp--) {
+                DDRB ^= _BV(2);                   // PB2 PWM Output toggle
+                _delay_ms(5); // 50 hz
+                DDRB ^= _BV(2);                   // PB2 PWM Output toggle
+                _delay_ms(15); // 50 hz
+            }
+
+        }
+        timeout = 0;
+    }
+
 
     while (1) {
         // main loop
 
-        if (brake_timeout == 1) { 
-            DDRB &= ~_BV(2);                  // PB2 PWM Output disable
-            brake_off();
-        }
+        if (brake_timeout == 1) brake_off();
 
         if (my_speed != car_speed[config.slot]) {
             my_speed = car_speed[config.slot];
@@ -209,6 +288,14 @@
                 if (my_switch != 0) {
                     // cycle light
                     if (config.light == LIGHT_MODES) config.light = 0; else config.light++;
+                    if (timeout > 1) {
+                        // zweiter Tastendruck, Program Mode im EEPROM setzen
+                        config.program = 1; // TODO: hier muss der slot rein welcher doppelclicked wurde (natuerlich dann auch nicht in der Lichtschaltelogik abfragen!)
+                    } else {
+                        // erster Tastendruck, timeout setzen
+                        timeout = 80;
+                    }
+                    config_save();
                 }
             }
         }
@@ -223,13 +310,8 @@
         }
 
 
-        /*
-        _delay_ms(100);
-        _delay_ms(100);
-        */
-
-
-
+        // timeout reset
+        timeout = 0;
     } // main loop end
 };