Hello,
I'm making a scoreboard and I'm using multiplexing 7 segments.
With a remote control I'm controlling the counting of the digits.
I have two big problems with this.
The first is that I can count just 2 times by sending b to the UDR.
After that I have to send something else to count up.
How can I fix that I can count up two 199?
The second problem is that if I'm trying to count up with two 7 segment seperaterly I can count up 1 time, and then I need to count up the other 7 segment.
How to fix this?
Under this is my code:
/********************************************************************************
Includes
********************************************************************************/
#include <avr/io.h>
#include <stdio.h>
#include <util/delay.h>
/********************************************************************************
Defines
********************************************************************************/
#define USART_BAUDRATE 9600
#define BAUD_PRESCALE 51
/********************************************************************************
Functies
********************************************************************************/
/********************************************************************************
usart
********************************************************************************/
uint8_t UART_receive(void) //uart ontvangen
{
while (!(UCSRA | (1<<RXC)));
return UDR;
}
/********************************************************************************
Main
********************************************************************************/
int main (void)
{
UCSRB |= (1 << RXEN) | (1 << TXEN); //zend en ontvang
UCSRC |= (1 << URSEL) | (1 << UCSZ0) | (1 << UCSZ1); // 8 bit
UBRRL = BAUD_PRESCALE; // Load lower 8-bits of the baud rate value into the low byte of the UBRR register
UBRRH = (BAUD_PRESCALE >> 8); // Load upper 8-bits of the baud rate value into the high byte of the UBRR register
int numbers[10]=
{0b01000000, // 0
0b11111001, // 1
0b00100100, //2
0b10110000, // 3
0b00011001, // 4
0b10010010, // 5
// 0b00000011, // 6
0b00000010, // 6
0b11111000, // 7
0b00000000, // 8
// 0b10011000, // 9
0b10010000 };
int i=0;
int j=0;
DDRA=0xFF;
DDRB=0xFF;
DDRC=0xFF; /* Pull-ups enabled */
PORTA=0x00;
PORTB=numbers[0];
PORTC=0x00;
unsigned char data;
char b,a;
while (1)
{
PORTC=(~(0x01));
PORTB=numbers[i];
_delay_ms(1);
PORTC=(~(0x02));
PORTB=numbers[j];
_delay_ms(1);
if (!('b' == UART_receive()))
{
i++;
PORTC=(~(0x01));
PORTB=numbers[i];
_delay_ms(1);
PORTC=(~(0x02));
PORTB=numbers[j];
_delay_ms(1);
while (!('b'== UART_receive()))
{
PORTC=(~(0x01));
PORTB=numbers[i];
_delay_ms(1);
PORTC=(~(0x02));
PORTB=numbers[j];
_delay_ms(1);
}
}
if (!('c' == UART_receive()))
{
j++;
while (!('c' == UART_receive()))
{
PORTC=(~(0x01));
PORTB=numbers[i];
_delay_ms(1);
PORTC=(~(0x02));
PORTB=numbers[j];
_delay_ms(1);
}
}
}
}best regards,
Floris