irmp-main-pic-12F1840.c

   1 /*---------------------------------------------------------------------------------------------------------------------------------------------------
   2  * main_pic.c - example main module
   3  *
   4  * IR decoder using IRMP
   5  *
   6  * (c) 2014 Wolfgang Strobl (ws at mystrobl.de) 2014-03-12:2014-07-05
   7  *
   8  * This demo module is runnable on a Microchip PIC 12F1840
   9  *
  10  * To be used with IRMP by Frank Meyer (frank(at)fli4l.de)
  11  * <http://www.mikrocontroller.net/articles/IRMP>
  12  *
  13  * This program is free software; you can redistribute it and/or modify
  14  * it under the terms of the GNU General Public License as published by
  15  * the Free Software Foundation; either version 2 of the License, or
  16  * (at your option) any later version.
  17  *---------------------------------------------------------------------------------------------------------------------------------------------------
  18  */
  19
  20
  21 /*
  22                               PIC12F1840
  23        ___                     __
  24  10k -|___|-+           Vdd -o| o|o- Vss
  25        ___  +-RS232in / GP5 -o|  |o- GP0 / ICSPDAT
  26   1k -|___|-- RS232out/ GP4 -o|  |o- GP1 / ICSPCLK
  27                   Vpp / GP3 -o|__|o- GP2 / TS TSOP1736
  28 Example output, using a bunch of different remote controls
  29 IRMP PIC 12F1840 1.1 ws
  30 P 7 a=0x0011 c=0x000c f=0x00 (RC5)
  31 P 6 a=0x0001 c=0x0018 f=0x00 (RECS80)
  32 P 2 a=0xbf00 c=0x0019 f=0x00 (NEC)
  33 P 2 a=0xeb14 c=0x0001 f=0x00 (NEC)
  34 P 7 a=0x001c c=0x0005 f=0x00 (RC5)
  35 P 7 a=0x000a c=0x0057 f=0x00 (RC5)
  36 P 7 a=0x000a c=0x0057 f=0x01 (RC5)
  37 P 2 a=0xfb04 c=0x0008 f=0x00 (NEC)
  38
  39 */
  40
  41 #include <stdio.h>
  42
  43 #include "irmp.h"
  44
  45 /******************************************************************************/
  46 // "system.h"
  47 /******************************************************************************/
  48 #define SYS_FREQ        32000000L
  49 #define _XTAL_FREQ      32000000   // for _delay
  50 #define FCY             (SYS_FREQ/4)
  51
  52 /******************************************************************************/
  53 // "user.c"
  54 /******************************************************************************/
  55 void InitApp(void)
  56 {
  57     ANSELA=0;
  58     TRISA4=0;
  59     IRCF0=0; // p. 45
  60     IRCF1=1;
  61     IRCF2=1;
  62     IRCF3=1;
  63     SPLLEN=1; // p  46 and 54
  64 }
  65
  66 /******************************************************************************/
  67 // "configuration_bits.c" 12F1848
  68 /******************************************************************************/
  69 // CONFIG1
  70 #pragma config FOSC = INTOSC    // Oscillator Selection (INTOSC oscillator: I/O function on CLKIN pin)
  71 #pragma config WDTE = OFF       // Watchdog Timer Enable (WDT disabled)
  72 #pragma config PWRTE = ON       // Power-up Timer Enable (PWRT enabled)
  73 #pragma config MCLRE = OFF      // MCLR Pin Function Select (MCLR/VPP pin function is digital input)
  74 #pragma config CP = OFF         // Flash Program Memory Code Protection (Program memory code protection is disabled)
  75 #pragma config CPD = OFF        // Data Memory Code Protection (Data memory code protection is disabled)
  76 #pragma config BOREN = ON       // Brown-out Reset Enable (Brown-out Reset enabled)
  77 #pragma config CLKOUTEN = OFF   // Clock Out Enable (CLKOUT function is disabled. I/O or oscillator function on the CLKOUT pin)
  78 #pragma config IESO = OFF       // Internal/External Switchover (Internal/External Switchover mode is disabled)
  79 #pragma config FCMEN = OFF      // Fail-Safe Clock Monitor Enable (Fail-Safe Clock Monitor is disabled)
  80
  81 // CONFIG2
  82 #pragma config WRT = OFF        // Flash Memory Self-Write Protection (Write protection off)
  83 #pragma config PLLEN = OFF      // PLL Enable (4x PLL disabled)
  84 #pragma config STVREN = ON      // Stack Overflow/Underflow Reset Enable (Stack Overflow or Underflow will cause a Reset)
  85 #pragma config BORV = LO        // Brown-out Reset Voltage Selection (Brown-out Reset Voltage (Vbor), low trip point selected.)
  86 #pragma config LVP = OFF        // Low-Voltage Programming Enable (High-voltage on MCLR/VPP must be used for programming)
  87 /******************************************************************************/
  88
  89 /******************************************************************************/
  90 // UART
  91 /******************************************************************************/
  92
  93 // This demo module uses RS232 TX via EUSART, only
  94
  95 #define useEUSART 1
  96 #define BAUD 19200
  97
  98
  99 void
 100 RS232init(void)
 101  {
 102      // Transmit
 103      TXCKSEL = 1;                 //  put TX on pin 4 - not 0 -, p 102
 104      SPBRGL = (_XTAL_FREQ/BAUD/64-1);
 105      SPBRGH = 0;
 106      BRGH = 0;
 107      BRG16 = 0;
 108      // p 259 manual
 109      SYNC = 0;                  // 0 p. 267
 110      SPEN = 1;                  //  26.1.1.7
 111      SCKP = 1;                  // invert p 269
 112      TXEN = 1;
 113  }
 114
 115  // EUSART transmit
 116  void
 117  putch(char c)
 118  {
 119     while (!TRMT) _delay(1);
 120     TXREG=c;
 121  }
 122
 123 /******************************************************************************/
 124 // Timer and ISR
 125 /******************************************************************************/
 126
 127 void
 128 timer1_init(void)
 129 {
 130     // p 154
 131     TMR1=0xFC00; // p. 155 wait 1024 cycles for stabilization.
 132     TMR1CS1=0; // Clock source == System Clock
 133     TMR1CS0=1;
 134     TMR1IE=1; // enable TMR1 interrupts
 135     PEIE=1;   // enable Pheripheral Interrupts
 136
 137 }
 138
 139
 140 /******************************************************************************/
 141 // Interrupt handler
 142 /******************************************************************************/
 143
 144 void interrupt isr(void)
 145 {
 146     irmp_ISR();
 147     TMR1=0xffff-_XTAL_FREQ/F_INTERRUPTS;
 148     TMR1IF=0; // clear timer 1 interrupt
 149 }
 150
 151 /******************************************************************************/
 152 // MAIN
 153 /******************************************************************************/
 154
 155 int
 156 main (void)
 157 {
 158     IRMP_DATA irmp_data;
 159     InitApp(); // später inlinen
 160
 161 #if useEUSART
 162     RS232init();
 163 #endif
 164     __delay_ms(200);
 165     printf("IRMP PIC 12F1840 1.1 ws\r\n");
 166     irmp_init();                                                            // initialize irmp
 167     timer1_init();            // initialize timer1
 168     ei();                     // enable interrupts
 169     TMR1ON=1; // start timer
 170
 171     for (;;)
 172     {
 173         if (irmp_get_data (&irmp_data))
 174         {
 175             printf("P ");
 176             printf("%d a=0x%04x c=0x%04x f=0x%02x (",irmp_data.protocol, irmp_data.address,irmp_data.command,irmp_data.flags);
 177
 178
 179 #if IRMP_PROTOCOL_NAMES
 180             printf(irmp_protocol_names[irmp_data.protocol]);
 181 #else
 182             switch(irmp_data.protocol)
 183             {
 184                 case 1:
 185                     printf("Sony");
 186                     break;
 187                 case 2:
 188                     printf("NEC");
 189                     break;
 190                 case 7:
 191                     printf("RC5");
 192                     break;
 193                 case 0x21:
 194                     printf("Ortek");
 195                     break;
 196             }
 197 #endif
 198             printf(")\r\n");
 199         }
 200     }
 201 }