clear unnecessary files

clock now roughly works (no Timezone support)
also setting led brightness via encoder works (every 2nd step works,
overflow at FF)

code/inc/DS3231.h

@@ -3,7 +3,7 @@
 
 #include <avr/io.h>
 
-uint32_t DS3231_read(void);
+void DS3231_read(uint8_t dest[3]);
 void DS3231_write(uint8_t inbuffer[3]);
 
 #endif

code/inc/adc.h

@@ -1,7 +0,0 @@
-#ifndef _ADC_H
-#define _ADC_H
-
-void adc_setup(void);
-int adc_read(unsigned char adc_pin);
-
-#endif

code/inc/print.h

@@ -1,18 +0,0 @@
-#ifndef _PRINT_H
-#define _PRINT_H
-
-extern const unsigned char character_Font[26];
-extern const unsigned char number_Font[10];
-
-extern unsigned char SR_Buffer[];
-
-void clear_SR_Buffer(void);
-void print_SR_Buffer(void);
-void add_Decimal_Point_to_SR_Buffer(int pos);
-void add_Character_to_SR_Buffer(unsigned char character, int pos);
-void add_Number_to_SR_Buffer(int number, int pos);
-void print_String(char* string);
-void add_ASCII_to_SR_Buffer(unsigned char, int pos);
-
-
-#endif

code/src/DS3231.c

@@ -3,17 +3,18 @@
 #include <avr/io.h>
 #include "i2cmaster.h"
 
-uint32_t DS3231_read(){
+void DS3231_read(uint8_t dest[3]){
+    // set address to 0
     i2c_start_wait(0xD0);
     i2c_write(0x00);
     i2c_stop();
 
+    // read addresses 0, 1 and 2
     i2c_start_wait(0xD1);
-    uint8_t sec = i2c_readAck();
+    dest[0] = i2c_readAck();
-    uint8_t min = i2c_readAck();
+    dest[1] = i2c_readAck();
-    uint8_t std = i2c_readNak();
+    dest[2] = i2c_readNak();
     i2c_stop();
-    return ((uint32_t)std<<16) | ((uint32_t)min<<8) | sec;
 }
 
 void DS3231_write(uint8_t inbuffer[3]){

code/src/adc.c

@@ -1,25 +0,0 @@
-#include "adc.h"
-#include "pinout.h"
-#include <avr/io.h>
-
-void adc_setup(void){
-  ADMUX = (1 << REFS0);     //Versorgungsspannung definieren
-  ADCSRA|= (1 << ADEN)    //enable bit für adc
-		| (1 << ADPS0)   //setze Prescaler für Abtastfrequenz
-		| (1 << ADPS1)   //setze Prescaler für Abtastfrequenz
-		| (0 << ADPS2);   //setze Prescaler für Abtastfrequenz
-}
-
-
-
-int adc_read(unsigned char adc_pin) {
-  ADMUX &= 0b11110000; //Alte Port-Select Flags löschen
-  ADMUX|=adc_pin;	//Neuen Eingang setzen
-  ADCSRA |= (1 << ADSC);          // eine Wandlung "single conversion"
-  while (ADCSRA & (1 << ADSC) ) { // auf Abschluss der Konvertierung warten
-  }
-  int ADCresult = ADCL;
-  ADCresult += (ADCH << 8);
-  return ADCresult;
-}
-

code/src/main.c

@@ -1,44 +1,56 @@
-//#define F_CPU 16000000L
-
 #include <avr/io.h>
 #include <util/delay.h>
 #include <avr/interrupt.h>		//interrupts
 #include <stdlib.h>
 #include <string.h>
 #include "pinout.h"
-#include "print.h"
-#include "adc.h"
 #include "uart.h"
 #include "i2cmaster.h"
 #include "DS3231.h"
 
 #define RX_INPUT_BUFFER_SIZE 92
 
-/*README
-   DIP1 aktiviert Röhren-Schaltregler
-*/
-
-volatile int counter = 0;
-//char text[22] = {'F','R','o','h','e',' ',' ','W','e','i','h','n','a','c','h','t','e', 'n', ' ',' ', ' ', ' '};
-char text[18] = {'1','2','3','4','5','6','7','8','9','t','s','c','a','f','e',' ', ' ', ' '};
-int offset = 0;
-int animationtimer = 0;
-int stringlength = 22;
-int duty = 125;
-
-
 void check_dip_switches(void);
-void check_buttons(void);
 void setup(void);
 void set_PWM_duty(int dutycycle);
 
-uint8_t parse_nmea_gps(char input_string[RX_INPUT_BUFFER_SIZE], uint8_t output_buffer[3]){
+unsigned char SR_Buffer[6];
+const unsigned char number_Font[10]  = {
+    0b11011110, //0
+    0b00000110, //1
+    0b11101010, //2
+    0b01101110, //3
+    0b00110110, //4
+    0b01111100, //5
+    0b11111100, //6
+    0b00001110, //7
+    0b11111110, //8
+    0b01111110  //9
+};
+
+void clear_SR_Buffer(void) {
+    for (uint8_t i = 0; i < 6; i++) {
+        SR_Buffer[i] = 0;
+    }
+}
+
+void print_SR_Buffer(void) {
+    PORTC &= ~(LATCH_SR);
+
+    for (uint8_t i = 0; i < 6; i++) {
+        SPDR = SR_Buffer[i];
+        while (!(SPSR & (1 << SPIF))); //warten auf transferabschluss
+    }
+    PORTC |= LATCH_SR;
+}
+
+int8_t parse_nmea_gps(char input_string[RX_INPUT_BUFFER_SIZE], uint8_t output_buffer[3]){
     char* token = strsep(&input_string, ",");
     if(!strcmp("$GPRMC", token)){
         char* time = strsep(&input_string, ",");
         if(!strlen(time)){
             // no valid time available
-            return -1;
+            return -2;
         }
 
         // craft bcd values
@@ -53,21 +65,22 @@ uint8_t parse_nmea_gps(char input_string[RX_INPUT_BUFFER_SIZE], uint8_t output_b
 
         return 0;
     }
+    return -1;
 }
 
 int main(void){
     setup();
 
     while(1){
- 	_delay_ms(500);
+        _delay_ms(200);
 
         check_dip_switches();
- 	check_buttons();
 
-    uint32_t clock = DS3231_read();
+        uint8_t clock[3];
-    for(uint8_t i=0; i < 6; i++){
+        DS3231_read(clock);
-        SR_Buffer[5-i] = number_Font[clock & 0x0F];
+        for(uint8_t i=0; i < 3; i++){
-        clock = clock >> 4;
+            SR_Buffer[5-(2*i)] = number_Font[clock[i] & 0x0F];
+            SR_Buffer[5-(2*i)-1] = number_Font[(clock[i] & 0xF0)>>4];
         }
         print_SR_Buffer();
     }
@@ -85,12 +98,6 @@ void check_dip_switches() {
     }
 }
 
-void check_buttons(){
-	if((PINC & BUTTON_A)){
-		 // PORTB &=  ~STATUS_LED_C;
-	}
-};
-
 void setup(){
 
     DDRA =   ENABLE_TUBE_SUPPLY;
@@ -108,7 +115,6 @@ void setup(){
     DDRD =   RESET_SR 
         | TUBE_LED;
 
-
     //--------------------------
     //  		 SPI
     //--------------------------
@@ -127,8 +133,6 @@ void setup(){
     PORTD |= RESET_SR;   //Setzte Reset auf HIGH (active LOW)
     PORTC &= ~(ENABLE_SR); //Aktiviert Shiftregister (active LOW)
 
-    
-    
     //--------------------------
     //    Externe Interrupts
     //--------------------------
@@ -142,13 +146,6 @@ void setup(){
         (1 << ISC11) |
         (1 << ISC00) |        //Interrupt bei jedem Pegelwechsel auf INT0
         (1 << ISC01);
-  //Pin Change Interrupt Control Register
-  PCICR |= (1 << PCIE2);        //Enabled PCINT16-23 als mögliche Signalquelle für Interrupt
-  
-  //Pin Change Mask Register 2
-  //PCMSK2 |= (1 << PCINT18) |    //PCINT18 als Signalquelle wählen
-  //            (1 << PCINT19);      //PCINT19 als Signalquelle wählen
-    
 
     //--------------------------
     //  Timer + Zeitinterrupts
@@ -156,96 +153,41 @@ void setup(){
 
     //PWM-Timer
     //OC2A  set when upcounting, clear when down counting
-  TCCR2A = (1<<COM1A1) 
+    TCCR2A = (1<<COM2A1) 
-		| (0<<COM1A0);
+        |(0<<COM2A0);
 
-  TCCR2B=(1<<WGM20) //Wave form generartion mode
+    TCCR2A |= (1<<WGM20)   //Wave form generartion mode
-	    |(1<<WGM21) // Wave form generation mode
+        |(0<<WGM21);   // Wave form generation mode
-	    |(1<<COM2A1); //Compare Output Mode  	    
 
-  OCR2A   = duty; // Compare value 125
+    TCCR2B = (1 << CS22)
-	    
+        |(0 << CS21)
-
+        |(0 << CS20);
-
+    OCR2A   = 0; // Compare value 125
-	    
-
-
-  //Timer/Counter control Register A&B
-  //set normal-Mode and waveform
-  TCCR1A = (0 << WGM01) |
-           (0 << WGM00);
-  TCCR1B = (0 << WGM02);
-
-
-  ////Prescaler von 1024
-  //TCCR1B |= (1 << CS02) |
-  //          (0 << CS01) |
-  //          (1 << CS00) ;
-
-
-  //Output compare Regsiter (Setzt Zeit bei der Interrupt auslösen soll)
-  OCR1A = (1 << 7) | //MSB
-          (1 << 6) |
-          (1 << 5) |
-          (1 << 4) |
-          (1 << 3) |
-          (1 << 2) |
-          (1 << 1) |
-          (1 << 0) ; //LSB
-
-  //TIMSK1 |= (1 << OCIE0A); //Interruptvector hinzufügen
-  TIMSK1 |= (1 << ICIE1) |  	//Interrupt Counter Enabled)
-			(1 << TOIE1);  	   //Timer Overflow Enabled
 
     uart_init();
     i2c_init();
 
     sei(); //Enable Interrupts
-	//adc_setup();
-	//i2c_init();
-	//USART_Init(MYUBRR); 
     clear_SR_Buffer();
 
-
-
-}
-
-void set_PWM_duty(int dutycycle){
-	 OCR2A = dutycycle;
- }
-
-
-//Timer 1 Interrupt
-ISR (TIMER1_OVF_vect)    // Timer1 ISR
-{
-	//PORTD ^=TUBE_LED;
-	TCNT1 = 63974; //63974;   // for 1 sec at 16 MHz
-	animationtimer ++;
-	if(animationtimer > 10){
-		animationtimer= 0;
-		offset++;
-		PORTB ^= STATUS_LED_B;
-		if(offset > 15){
-			offset = 0;
-		}
-	}
 }
 
 //Encoder rotate
 ISR(INT0_vect) {
     if (PIND & ENCODER_B) {
-  //  set_PWM_duty(duty--);
+        printf("step-\n\r");
+        OCR2A--;
     } else {
-   // set_PWM_duty(duty++);
+        OCR2A++;
+        printf("step+\n\r");
     }
 }
 
 //Encoder Button
 ISR(INT1_vect) {
-
+    printf("button\n\r");
 }
 
-
 ISR(USART0_RX_vect)
 {
     static char async_input_buffer[RX_INPUT_BUFFER_SIZE];
@@ -259,15 +201,15 @@ ISR(USART0_RX_vect)
     else if(async_buffer_pointer > 0){
         async_input_buffer[async_buffer_pointer] = 0; // Null terminate string
         async_buffer_pointer=0;
-        uint8_t bcd_time[3];
+        uint8_t gps_time[3];
-
+        int8_t err = parse_nmea_gps(async_input_buffer, gps_time);
-        /* write to RTC if time is valid */
+        if(!err){
-        if(!parse_nmea_gps(async_input_buffer, bcd_time)){
-            DS3231_write(bcd_time);
             PORTB |= STATUS_LED_C;
-        } else {
+            //if(rtc_time[0] != gps_time[0] || rtc_time[1] != gps_time[1] || rtc_time[2] != gps_time[2])
-            PORTB &= ~STATUS_LED_C;
+            DS3231_write(gps_time);
         }
+        else if(err == -2)
+            PORTB &= ~STATUS_LED_C;
     }
 }
 

code/src/print.c

@@ -1,124 +0,0 @@
-#include "pinout.h"
-#include "print.h"
-#include <stdlib.h>
-#include <avr/io.h>
-#include <util/delay.h>
-
-const unsigned char number_Font[10]  = {  0b11011110, //0
-                                          0b00000110, //1
-                                          0b11101010, //2
-                                          0b01101110, //3
-                                          0b00110110, //4
-                                          0b01111100, //5
-                                          0b11111100, //6
-                                          0b00001110, //7
-                                          0b11111110, //8
-                                          0b01111110  //9
-                                       };
-const unsigned char character_Font[26] = {0b10111110, //A
-                                          0b11110100, //b
-                                          0b11100000, //c
-                                          0b11100110, //d
-                                          0b11111000, //e
-                                          0b10111000, //F
-                                          0b11011100, //G
-                                          0b10110100, //h
-                                          0b00000100, //i
-                                          0b01000110, //J
-                                          0b10111100, //K
-                                          0b11010000, //L
-                                          0b10011110, //M
-                                          0b10100100, //n
-                                          0b11100100, //o
-                                          0b10111010, //P
-                                          0b00111110, //q
-                                          0b10100000, //r
-                                          0b01111100, //S
-                                          0b11110000, //t
-                                          0b11000100, //u
-                                          0b11000100, //v
-                                          0b11010110, //W
-                                          0b10110110, //X
-                                          0b01110110, //Y
-                                          0b11100110 //Z
-                                         };
-const unsigned char blank =           0b00000000; //zeigt nichts an
-const unsigned char minus =           0b00100000; //zeigt '-' an
-const unsigned char dot =             0b00000001; //aktiviert Dezimalpunkt
-unsigned char SR_Buffer[6] = {0b11100110,
-							  0b11100110,
-							  0b11100110,
-							  0b11100110,
-							  0b11100110,
-							  0b11100110};
-
-
-
-void clear_SR_Buffer() {
-  for (uint8_t i = 0; i < 6; i++) {
-    SR_Buffer[i] = blank;
-  }
-}
-
-void add_Decimal_Point_to_SR_Buffer(int pos){
-	SR_Buffer[pos-1] += dot;
-}
-
-void print_SR_Buffer() {
-  PORTC &= ~(LATCH_SR);
-  
-  for (int i = 0; i < 6; i++) {
-    SPDR = SR_Buffer[i];
-    //SPDR = 0b11100110;
-    //_delay_us(100);
-    while (!(SPSR & (1 << SPIF))); //warten auf transferabschluss
-  }
-  PORTC |= LATCH_SR;
-  //_delay_ms(1);
-  //PORTC &= ~(LATCH_SR);
-}
-
-void print_String(char* string){
-	for(int i = 0; i < 6; i++){
-		add_ASCII_to_SR_Buffer(string[i],i);
-	}
-	print_SR_Buffer();
-}
-
-
-void add_ASCII_to_SR_Buffer(unsigned char character, int pos) {
-  int ascii_offset = 0;
-  
-  if((character > 46) && (character < 57)){ //Char ist Zahl
-	ascii_offset = 48;
-	SR_Buffer[pos] = number_Font[character - ascii_offset]; //Zieht ASCII-Offset ab, sodass Zahl mit Font Index übereinstimmen
-  }else if (character > 95 && character < 122) { //Buchstabe ist kleiner Buchstabe
-    ascii_offset = 97;
-    SR_Buffer[pos] = character_Font[character - ascii_offset]; //Zieht ASCII-Offset ab, sodass Buchstaben mit Font Index übereinstimmen
-  } else if (character > 64 && character < 91){   //Buchstabe groß Buchstabe
-    ascii_offset = 65;
-    SR_Buffer[pos] = character_Font[character - ascii_offset]; //Zieht ASCII-Offset ab, sodass Buchstaben mit Font Index übereinstimmen
-  } else if (character == 32){ //Charakter ist Blank ' '
-	SR_Buffer[pos] = blank;
-  } else if (character == 45){ //Charakter ist Minus -
-	SR_Buffer[pos] = minus;  
-  }
-  
-}
-
-void add_Character_to_SR_Buffer(unsigned char character, int pos) {
-  int ascii_offset = 0;
-  
-  if (character > 96 && character < 122) { //Buchstabe ist kleiner Buchstabe
-    ascii_offset = 97;
-    SR_Buffer[pos] = character_Font[character - ascii_offset]; //Zieht ASCII-Offset ab, sodass Buchstaben mit Font Index übereinstimmen
-  } else if (character > 65 && character < 91){   //Buchstabe groß Buchstabe
-    ascii_offset = 65;
-    SR_Buffer[pos] = character_Font[character - ascii_offset]; //Zieht ASCII-Offset ab, sodass Buchstaben mit Font Index übereinstimmen
-  }
-  
-}
-
-void add_Number_to_SR_Buffer(int number, int pos) {
-  SR_Buffer[pos-1] = number_Font[number];
-}