关于使用两个七段灯显示0x00到0xFF的问题 [英] Questions about displaying 0x00 to 0xFF with two seven segment Lights
问题描述
有人可以帮我吗?我一直在研究并尝试使其正常工作，但是我很不幸.我在网上找到的所有代码都无法正常工作...目前的输出为00、11、22、33，... FF，然后退回到00.如何分隔第一位和第二位显示?就像我希望它显示0到255(00、01、02 ... FF)一样?
Can someone please help me with this? I have been researching and trying to get this working, but I'm out of luck. All the codes I found online were not working... The output, for now, is 00, 11, 22, 33, ... FF and lop back to 00. How do I separate the first and second digit displays? Like I want it to display from 0 to 255 (00, 01, 02...FF)?
要求:
电路首次通电时，七段LED将从0x00开始计数.
When the circuit is first energized, the seven-segment LEDs will start counting at 0x00.
决斗段LED的计数最多为0xFF，每次增加1.计数必须是连续的.对数字2的0到F到0进行计数，然后将数字1递增1，这是不可接受的.计数的执行方式应类似于计数器(从0x00到0x0F然后是0x10等).
The duel segment LEDs will count up to 0xFF, increasing by 1 each time. The count MUST BE sequential. It is unacceptable to count 0 to F to 0 on digit 2, then increase digit 1 by 1. The count shall perform like a counter (0x00 to 0x0F then 0x10 etc.).
一旦计数达到0xFF，计数将从0x00开始.
Once the count reaches 0xFF, the count will start over at 0x00.
该代码将在增加计数之间包含足够的延迟，以便可以直观地确认该电路/代码是否按设计工作.
The code will contain sufficient delay between incrementing the count so that the count can be visually confirmed that the circuit/code is operating as designed.
以上内容将无限循环地反复发生，直到设备断电为止.
The above will occur infinitely, another word, in an endless loop until the device is powered down.
源代码:
#include
void PORTA_init(void)
{
PORTA = 0; // All PORTA Pins are low
CMCON0 = 7; // Turn off Comparators
ANSEL = 0; // Turn off ADC
//TRISA = 0b001111; // RA4 and 5 are outputs; RA0,1,2, and 3 are input
return;
}
/******** END OF PORTA_init ****************************/
/********************************************************
* Notes:
*
* Delay was determined through trial and error
*
* Returns: None
* ********************************************************/
/** Function: main *************************************
*
* Notes:
*
* RA4 - Positive LED Connection for D0
* RA5 - Negative LED Connection for D0
*
* Returns: None -- This routine contains an infinite loop
*
*/
// CONFIG --- Configuration Word --- START
#pragma config FOSC = INTOSCIO
#pragma config WDTE = OFF
#pragma config PWRTE = OFF
#pragma config MCLRE = OFF
#pragma config CP = OFF
#pragma config CPD = OFF
#pragma config BOREN = OFF
#pragma config IESO = OFF
#pragma config FCMEN = OFF
// CONFIG --- Configuration Word --- END
int i, j;
int DisplayValue, DisplayLED;
//PLACE LEDDigit ARRAY HERE
const char LEDDigit[] = {
0b0000001, // "0"
0b1001111, // "1"
0b0010010, // "2"
0b0000110, // "3"
0b1001100, // "4"
0b0100100, // "5"
0b0100000, // "6"
0b0001111, // "7"
0b0000000, // "8"
0b0000100, // "9"
0b0001000, // "A"
0b1100000, // "b"
0b0110001, // "C"
0b1000010, // "d"
0b0110000, // "E"
0b0111000}; // "F"
main()
{
PORTA = 0;
PORTC = 0;
CMCON0 = 7; // Turn off Comparators
ANSEL = 0; // Turn off ADC
TRISA = 0b011100;
TRISC = 0b000000;
DisplayValue = 0; // Start Displaying at 0x00
DisplayLED = 0; // Display the 1s first
while(1 == 1) // Loop Forever
{
if (0 == DisplayLED) // True, then display right digit
{
RA5 = LEDDigit[DisplayValue & 0x0F] >> 6;
// Clears display bits 4 - 7 of DisplayValue,
// then selects bit 7 of LEDDigit
PORTC = LEDDigit[DisplayValue & 0x0F] & 0x03F;
// clears display bits 4 - 7 of DisplayValue,
// then selects bits 0 - 6 of LEDDigit
}
else
{
RA5 = LEDDigit[(DisplayValue >> 4) & 0x0F] >> 6;
PORTC = LEDDigit[(DisplayValue >> 4) & 0x0F] & 0x03F;
} //
TRISA = TRISA ^ 0b011111; // Swap Left/Right
PORTA = PORTA & 0b111100; // Make Sure Bits are Low
DisplayLED = DisplayLED ^ 1; // Other Digit Next
NOP(); // Used for 10 ms Timing
for (i = 0; i < 660; i++); // 10 ms Delay Loop
NOP(); // Used for 10 ms Timing
j = j + 1; // Increment the Counter?
if (25 == j) // 1/4 Second Passed?
{
DisplayValue++; // Increment the Counter
j = 0; // Reset for another 1/4 Second
} //
} //
} //
推荐答案
这可能是您的家庭作业的答案:
This is a possible answer to your homework assignment:
/*
* File: main.c
* Author: dan1138
* Target: PIC16F688
* Compiler: XC8 v2.00
*
* PIC16F688
* +------------:_:------------+
* GND -> 1 : VDD VSS : 14 <- 5v0
* SEG_An <> 2 : RA5/T1CKI PGD/AN0/RA0 : 13 <> PGD DIGIT_1n
* <> 3 : RA4/AN3 PGC/AN1/RA1 : 12 <> PGC DIGIT_2n
* VPP -> 4 : RA3/VPP AN2/RA2 : 11 <>
* SEG_Bn <> 5 : RC5/RXD AN4/RC0 : 10 <> SEG_Gn
* SEG_Cn <> 6 : RC4/TXD AN5/RC1 : 9 <> SEG_Fn
* SEG_Dn <> 7 : RC3/AN7 AN6 RC2 : 8 <> SEG_En
* +---------------------------:
* DIP-14
*
* Created on July 7, 2019, 6:56 PM
*/
#pragma config FOSC = INTOSCIO
#pragma config WDTE = OFF
#pragma config PWRTE = OFF
#pragma config MCLRE = OFF
#pragma config CP = OFF
#pragma config CPD = OFF
#pragma config BOREN = OFF
#pragma config IESO = OFF
#pragma config FCMEN = OFF
#include <xc.h>
#include <stdint.h>
#define _XTAL_FREQ (8000000ul)
const char LEDDigit[] =
{
/* abcdefg _ */
0b00000001, /* | | */
/* |_| */
/* */
0b01001111, /* | */
/* | */
/* _ */
0b00010010, /* _| */
/* |_ */
/* _ */
0b00000110, /* _| */
/* _| */
/* */
0b01001100, /* |_| */
/* | */
/* _ */
0b00100100, /* |_ */
/* _| */
/* _ */
0b00100000, /* |_ */
/* |_| */
/* _ */
0b00001111, /* | */
/* | */
/* _ */
0b00000000, /* |_| */
/* |_| */
/* _ */
0b00001100, /* |_| */
/* | */
/* _ */
0b00001000, /* |_| */
/* | | */
/* */
0b01100000, /* |_ */
/* |_| */
/* _ */
0b00110001, /* | */
/* |_ */
/* */
0b01000010, /* _| */
/* |_| */
/* _ */
0b00110000, /* |_ */
/* |_ */
/* _ */
0b00111000, /* |_ */
/* | */
/* */
0b01111111, /* blank */
/* */
};
volatile uint8_t Digit1Segments;
volatile uint8_t Digit2Segments;
volatile uint8_t Timer0Ticks;
void __interrupt() ISR_handler(void)
{
if (TMR0IE && TMR0IF) { /* TIMER0 asserts and interrupt every 1.024 milliseconds */
TMR0IF=0;
Timer0Ticks++;
if ((Timer0Ticks & 0x0F) == 0) { /* every 16.384 drive a new digit */
if ((TRISA & 3) == 2) {
TRISA |= 3; /* Turn off all digit drivers */
PORTA = 0;
if ((Digit2Segments & (1<<6)) != 0 ) {
PORTA = (1<<5);
}
PORTC = Digit2Segments;
/* Drive digit 2 segments */
TRISA &= ~2;
}
else {
TRISA |= 3;
PORTA = 0;
if ((Digit1Segments & (1<<6)) != 0 ) {
PORTA = (1<<5);
}
PORTC = Digit1Segments;
/* Drive digit 1 segments */
TRISA &= ~1;
}
}
}
}
void main(void) {
uint8_t HexCount;
/*
* Initialize this PIC
*/
INTCON = 0;
OSCCON = 0x70; /* Select 8MHz system oscillator */
__delay_ms(500); /* Give ICSP device programming tool a chance to get the PICs attention */
Digit1Segments = 0b01111111;
Digit2Segments = 0b01111111;
TRISA = 0xDF; /* PORTA bit 5 needs to be an output */
TRISC = 0x00;
ANSEL = 0;
OPTION_REG = 0b11000010; /* TIMER0 clock = FOSC/4, prescale 1:8 */
PORTA = 0;
PORTC = 0;
CMCON0 = 7;
TMR0 = 0;
TMR0IF = 0;
TMR0IE = 1;
GIE = 1;
/*
* This is the application loop.
*
* It counts up one count about every second.
*/
HexCount = 0;
while(1)
{
Digit1Segments = LEDDigit[HexCount & 0x0F];
Digit2Segments = LEDDigit[(HexCount>>4) & 0x0F];
__delay_ms(1000);
HexCount++;
}
}
仅使用MPLABX模拟器进行检查，因此它可能无法在实际硬件或Proteus模拟器中工作.
Only checked using the MPLABX simulator so it may not work in real hardware or in a Proteus simulator.
警告:我使用的概念可能没有涵盖，因此，如果此代码有效，并且您将其交给老师，就会知道您是从互联网上获得的.
Warning: I have used concepts that may not have been covered, so if this code works and you hand it in your instructor will know you got it from the internet.
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