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irmp-main-pic-12F1840.c
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irmp-main-pic-12F1840.c
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/*---------------------------------------------------------------------------------------------------------------------------------------------------
* irmp-main-pic-12F1840.c - example main module for PIC 12f1840
*
* IR decoder using IRMP
*
* (c) 2014 Wolfgang Strobl (news4 at mystrobl.de) 2014-03-12:2014-07-20
*
* This demo module is runnable on a Microchip PIC 12F1840
*
* To be used with IRMP by Frank Meyer (frank(at)fli4l.de)
* <http://www.mikrocontroller.net/articles/IRMP>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*---------------------------------------------------------------------------------------------------------------------------------------------------
*/
/*
Hauptprogramm fuer den nachfolgenden Testaufbau, bestehend aus zwei mal
TSOP1736+ PIC12F1840
| __
1k | Vdd--o| o|o--Vss
___ +--GP5--o| |o--GP0 / ICSPDAT
RS232 out -|___|-------GP4--o| |o--GP1 / ICSPCLK ___ LED
RS232 in -|___|---Vpp/GP3--o|__|o--GP2-----------|___|- ->|---Vss
10k
auf einem Steckbrett. (Genauer gesagt, dies ist die aktuelle Beschaltung
fuer V1.8, V1.0 ist aber bzgl. IRMP-Empfang funktional identisch. Nicht eingezeichnet
ist ein Abblockkondensator von 100nF ueber Vss und Vdd.
Uebersetzt mit Microchip MPLAB XC8 C Compiler (Free Mode) V1.31
im stark gecrippelten "Free Mode".
Memory Summary: (V 1.8)
Program space used C6Fh ( 3183) of 1000h words ( 77.7%)
Data space used 9Bh ( 155) of 100h bytes ( 60.5%)
EEPROM space used 0h ( 0) of 100h bytes ( 0.0%)
Data stack space used 0h ( 0) of 5Eh bytes ( 0.0%)
Configuration bits used 2h ( 2) of 2h words (100.0%)
ID Location space used 0h ( 0) of 4h bytes ( 0.0%)
Testaufbau:
Zwei Steckbretter,
urspruengliche Version des Programms als Empfaenger,
aktuelle Version als Sender, Aufzeichnung mit putty,
angeschlossen jeweils per USB2RS232-Kabel von Conrad
(972543, basierend auf Prolific PL2303). Soft-UART
fuer Input, da 12F1820 keine Kontrolle ueber Input-
Polaritaet erlaubt und ich fuer Testaufbauten eine
Minimalbeschaltung bevorzuge.
Kurze Distanz
(~30 cm) zwischen Sender und Empfaenger), keine genaue Ausrichtung.
Stromversorgung wahlwweise mit 5V via PICkit 2 oder 3x1.2V NiMH-AA.
Zunaechst
CD TAPE TUNER AUX OFF mit Philips FB,
OFF mit VAOVA TV-2900HDD FB
dann Eingabe . und n beim Sender.
Sender:
IRMP PIC 12F1840 1.8 ws
P 7 a=0x0014 c=0x003f f=0x00 (RC5)
P 7 a=0x0014 c=0x003f f=0x01 (RC5)
P 7 a=0x0012 c=0x003f f=0x00 (RC5)
P 7 a=0x0011 c=0x003f f=0x00 (RC5)
P 7 a=0x0015 c=0x003f f=0x00 (RC5)
P 7 a=0x0015 c=0x000c f=0x00 (RC5)
P 2 a=0xbf00 c=0x0059 f=0x00 (NEC)
P 2 a=0xbf00 c=0x0059 f=0x01 (NEC)
. MX115OFF PR2 221
n NEC PR2 209
Empfaenger:
IRMP PIC 12F1840 1.0 ws
P 7 a=0x0014 c=0x003f f=0x00 (RC5)
P 7 a=0x0014 c=0x003f f=0x01 (RC5)
P 7 a=0x0012 c=0x003f f=0x00 (RC5)
P 7 a=0x0011 c=0x003f f=0x00 (RC5)
P 7 a=0x0015 c=0x000c f=0x00 (RC5)
P 2 a=0xbf00 c=0x0059 f=0x00 (NEC)
P 2 a=0xbf00 c=0x0059 f=0x01 (NEC)
P 7 a=0x0015 c=0x000c f=0x00 (RC5)
P 7 a=0x0015 c=0x000c f=0x01 (RC5)
P 7 a=0x0015 c=0x000c f=0x01 (RC5)
P 2 a=0x0055 c=0x00aa f=0x00 (NEC)
Die via DSO an der LED gemessenen Frequenzen sind 36.0 resp. 38.0 kHz
*/
#include <stdio.h>
#include "irmp.h"
#include "irsnd.h"
/******************************************************************************/
// "system.h"
/******************************************************************************/
#define SYS_FREQ 32000000L
#define _XTAL_FREQ 32000000 // for _delay
#define FCY (SYS_FREQ/4)
/******************************************************************************/
// "user.c"
/******************************************************************************/
void InitApp(void)
{
ANSELA=0;
TRISA4=0;
IRCF0=0; // p. 45
IRCF1=1;
IRCF2=1;
IRCF3=1;
SPLLEN=1; // p 46 and 54
}
/******************************************************************************/
// "configuration_bits.c" 12F1848
/******************************************************************************/
// CONFIG1
#pragma config FOSC = INTOSC // Oscillator Selection (INTOSC oscillator: I/O function on CLKIN pin)
#pragma config WDTE = OFF // Watchdog Timer Enable (WDT disabled)
#pragma config PWRTE = ON // Power-up Timer Enable (PWRT enabled)
#pragma config MCLRE = OFF // MCLR Pin Function Select (MCLR/VPP pin function is digital input)
#pragma config CP = OFF // Flash Program Memory Code Protection (Program memory code protection is disabled)
#pragma config CPD = OFF // Data Memory Code Protection (Data memory code protection is disabled)
#pragma config BOREN = ON // Brown-out Reset Enable (Brown-out Reset enabled)
#pragma config CLKOUTEN = OFF // Clock Out Enable (CLKOUT function is disabled. I/O or oscillator function on the CLKOUT pin)
#pragma config IESO = OFF // Internal/External Switchover (Internal/External Switchover mode is disabled)
#pragma config FCMEN = OFF // Fail-Safe Clock Monitor Enable (Fail-Safe Clock Monitor is disabled)
// CONFIG2
#pragma config WRT = OFF // Flash Memory Self-Write Protection (Write protection off)
#pragma config PLLEN = OFF // PLL Enable (4x PLL disabled)
#pragma config STVREN = ON // Stack Overflow/Underflow Reset Enable (Stack Overflow or Underflow will cause a Reset)
#pragma config BORV = LO // Brown-out Reset Voltage Selection (Brown-out Reset Voltage (Vbor), low trip point selected.)
#pragma config LVP = OFF // Low-Voltage Programming Enable (High-voltage on MCLR/VPP must be used for programming)
/******************************************************************************/
/******************************************************************************/
// UART
/******************************************************************************/
#define GPIO3 RA3
#define GPIO4 RA4
#define SOFTUART_RXPIN GPIO3
#define SOFTUART_STDIO 1
#define SOFTUART_DI 1
#define BAUD 19200 // 38200 ginge auch noch
#define SOFTUART_BAUD BAUD
#include "softuart_pic.h"
#define kbhit softuartkbhit
void
RS232init(void)
{
// Transmit
TXCKSEL = 1; // put TX on pin 4 - not 0 -, p 102
SPBRGL = (_XTAL_FREQ/BAUD/64-1);
SPBRGH = 0;
BRGH = 0;
BRG16 = 0;
// p 259 manual
SYNC = 0; // 0 p. 267
SPEN = 1; // 26.1.1.7
SCKP = 1; // invert p 269
TXEN = 1;
}
// EUSART transmit
void
putch(char c)
{
while (!TRMT) _delay(1);
TXREG=c;
}
/******************************************************************************/
// Timer and ISR
/******************************************************************************/
void
timer1_init(void)
{
// p 154
TMR1=0xFC00; // p. 155 wait 1024 cycles for stabilization.
TMR1CS1=0; // Clock source == System Clock
TMR1CS0=1;
TMR1IE=1; // enable TMR1 interrupts
PEIE=1; // enable Pheripheral Interrupts
TMR1IF=0;
TMR1ON=1;
}
/******************************************************************************/
// Interrupt handler
/******************************************************************************/
void interrupt isr(void)
{
TMR1=0xffff-_XTAL_FREQ/F_INTERRUPTS;
TMR1IF=0; // clear timer 1 interrupt
if (!irsnd_ISR())
{
irmp_ISR();
}
}
IRMP_DATA irmp_data;
void RC5(uint16_t addr,uint16_t cmd, uint8_t repetitions)
{
irmp_data.protocol = IRMP_RC5_PROTOCOL;
irmp_data.address = addr;
irmp_data.command = cmd;
irmp_data.flags = repetitions;
irsnd_send_data (&irmp_data, FALSE);
}
void NEC(int addr,int cmd)
{
irmp_data.protocol = IRMP_NEC_PROTOCOL;
irmp_data.address = addr;
irmp_data.command = cmd;
irmp_data.flags = 0;
irsnd_send_data (&irmp_data, FALSE);
}
/******************************************************************************/
// MAIN
/******************************************************************************/
int
main (void)
{
IRMP_DATA irmp_data;
char c;
InitApp();
PWMoff();
RS232init();
__delay_ms(200);
printf("IRMP PIC 12F1840 1.8 ws\r\n");
irmp_init(); // initialize irmp
timer1_init(); // initialize timer1
ei(); // enable interrupts
TMR1ON=1; // start timer
for (;;)
{
if (kbhit())
{
c=getch();
if (c>32 && c<127) putch(c);
putch(' ');
if (c=='.')
{
printf("MX115OFF ");
RC5(0x15,0x0c,2); // Philips MC115 AUX OFF
}
else if (c=='n')
{
printf("NEC ");
NEC(0x55,0xaa);
}
else
{
putch('?');
continue;
}
while (irsnd_is_busy ()) ;
printf("PR2 %d\r\n",PR2);
continue;
}
if (irmp_get_data (&irmp_data))
{
printf("P ");
printf("%d a=0x%04x c=0x%04x f=0x%02x (",irmp_data.protocol, irmp_data.address,irmp_data.command,irmp_data.flags);
#if IRMP_PROTOCOL_NAMES
printf(irmp_protocol_names[irmp_data.protocol]);
#else
switch(irmp_data.protocol)
{
case 1:
printf("Sony");
break;
case 2:
printf("NEC");
break;
case 7:
printf("RC5");
break;
case 0x21:
printf("Ortek");
break;
}
#endif
printf(")\r\n");
}
}
}