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nowkas-iv-9-uhr
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clear unnecessary files

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clock now roughly works (no Timezone support)
also setting led brightness via encoder works (every 2nd step works,
overflow at FF)
master
Eggert Jung 6 years ago
parent 63fe6ab10a
commit 041cd5e422
7 changed files with 130 additions and 361 deletions
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2
code/inc/DS3231.h
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@ -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

7
code/inc/adc.h
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#ifndef _ADC_H
#define _ADC_H
void adc_setup(void);
int adc_read(unsigned char adc_pin);
#endif

18
code/inc/print.h
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#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

11
code/src/DS3231.c
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@ -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();
uint8_t min = i2c_readAck();
uint8_t std = i2c_readNak();
dest[0] = i2c_readAck();
dest[1] = i2c_readAck();
dest[2] = i2c_readNak();
i2c_stop();
return ((uint32_t)std<<16) | ((uint32_t)min<<8) | sec;
}
void DS3231_write(uint8_t inbuffer[3]){

25
code/src/adc.c
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#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;
}

176
code/src/main.c
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@ -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();
for(uint8_t i=0; i < 6; i++){
SR_Buffer[5-i] = number_Font[clock & 0x0F];
clock = clock >> 4;
uint8_t clock[3];
DS3231_read(clock);
for(uint8_t i=0; i < 3; i++){
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)
| (0<<COM1A0);
TCCR2A = (1<<COM2A1)
|(0<<COM2A0);
TCCR2B=(1<<WGM20) //Wave form generartion mode
|(1<<WGM21) // Wave form generation mode
|(1<<COM2A1); //Compare Output Mode
TCCR2A |= (1<<WGM20) //Wave form generartion mode
|(0<<WGM21); // Wave form generation mode
OCR2A = duty; // 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
TCCR2B = (1 << CS22)
|(0 << CS21)
|(0 << CS20);
OCR2A = 0; // Compare value 125
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];
/* write to RTC if time is valid */
if(!parse_nmea_gps(async_input_buffer, bcd_time)){
DS3231_write(bcd_time);
uint8_t gps_time[3];
int8_t err = parse_nmea_gps(async_input_buffer, gps_time);
if(!err){
PORTB |= STATUS_LED_C;
} else {
PORTB &= ~STATUS_LED_C;
//if(rtc_time[0] != gps_time[0] || rtc_time[1] != gps_time[1] || rtc_time[2] != gps_time[2])
DS3231_write(gps_time);
}
else if(err == -2)
PORTB &= ~STATUS_LED_C;
}
}

124
code/src/print.c
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#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];
}
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