Version 2.3.3: port to Stellaris ARM Cortex M4

[irmp.git] / main.c

/*---------------------------------------------------------------------------------------------------------------------------------------------------\r
 * main.c - demo main module to test irmp decoder\r
 *\r
 * Copyright (c) 2009-2012 Frank Meyer - frank(at)fli4l.de\r
 *\r
 * $Id: main.c,v 1.15 2012/11/18 17:51:26 fm Exp $\r
 *\r
 * ATMEGA88 @ 8 MHz\r
 *\r
 * Fuses: lfuse: 0xE2 hfuse: 0xDC efuse: 0xF9\r
 *\r
 * This program is free software; you can redistribute it and/or modify\r
 * it under the terms of the GNU General Public License as published by\r
 * the Free Software Foundation; either version 2 of the License, or\r
 * (at your option) any later version.\r
 *---------------------------------------------------------------------------------------------------------------------------------------------------\r
 */\r
\r
#include "irmp.h"\r
\r
#ifndef F_CPU\r
#error F_CPU unkown\r
#endif\r
\r
void\r
timer1_init (void)\r
{\r
#if defined (__AVR_ATtiny45__) || defined (__AVR_ATtiny85__)                // ATtiny45 / ATtiny85:\r
\r
#if F_CPU >= 16000000L\r
    OCR1C   =  (F_CPU / F_INTERRUPTS / 8) - 1;                              // compare value: 1/15000 of CPU frequency, presc = 8\r
    TCCR1   = (1 << CTC1) | (1 << CS12);                                    // switch CTC Mode on, set prescaler to 8\r
#else\r
    OCR1C   =  (F_CPU / F_INTERRUPTS / 4) - 1;                              // compare value: 1/15000 of CPU frequency, presc = 4\r
    TCCR1   = (1 << CTC1) | (1 << CS11) | (1 << CS10);                      // switch CTC Mode on, set prescaler to 4\r
#endif\r
\r
#elif defined(STELLARIS_ARM_CORTEX_M4)\r
    SysCtlPeripheralEnable(SYSCTL_PERIPH_TIMER1);\r
    TimerConfigure(TIMER1_BASE, TIMER_CFG_32_BIT_PER);\r
\r
    TimerLoadSet(TIMER1_BASE, TIMER_A, (F_CPU / F_INTERRUPTS) -1);\r
    IntEnable(INT_TIMER1A);\r
    TimerIntEnable(TIMER1_BASE, TIMER_TIMA_TIMEOUT);\r
    TimerEnable(TIMER1_BASE, TIMER_A);\r
    // Important: Timer1IntHandler has to be configured in startup_ccs.c !\r
#else                                                                       // ATmegaXX:\r
    OCR1A   =  (F_CPU / F_INTERRUPTS) - 1;                                  // compare value: 1/15000 of CPU frequency\r
    TCCR1B  = (1 << WGM12) | (1 << CS10);                                   // switch CTC Mode on, set prescaler to 1\r
#endif\r
\r
#if (!defined(STELLARIS_ARM_CORTEX_M4))\r
#  ifdef TIMSK1\r
    TIMSK1  = 1 << OCIE1A;                                                  // OCIE1A: Interrupt by timer compare\r
#  else\r
    TIMSK   = 1 << OCIE1A;                                                  // OCIE1A: Interrupt by timer compare\r
#  endif\r
#endif\r
}\r
\r
/*---------------------------------------------------------------------------------------------------------------------------------------------------\r
 * Timer 1 output compare A interrupt service routine, called every 1/15000 sec\r
 *---------------------------------------------------------------------------------------------------------------------------------------------------\r
 */\r
#ifdef TIM1_COMPA_vect                                                      // ATtiny84\r
ISR(TIM1_COMPA_vect)\r
#elif defined(STELLARIS_ARM_CORTEX_M4)\r
void Timer1IntHandler(void)\r
#else\r
ISR(TIMER1_COMPA_vect)\r
#endif\r
{\r
  (void) irmp_ISR();                                                        // call irmp ISR\r
  // call other timer interrupt routines...\r
}\r
\r
\r
int\r
main (void)\r
{\r
    IRMP_DATA irmp_data;\r
\r
#if defined(STELLARIS_ARM_CORTEX_M4)\r
    ROM_FPUEnable();\r
    ROM_FPUStackingEnable();\r
    ROM_SysCtlClockSet(SYSCTL_SYSDIV_5|SYSCTL_USE_PLL|SYSCTL_XTAL_16MHZ|SYSCTL_OSC_MAIN);\r
#endif\r
\r
    irmp_init();                                                            // initialize irmp\r
    timer1_init();                                                          // initialize timer 1\r
    sei ();                                                                 // enable interrupts\r
\r
    for (;;)\r
    {\r
        if (irmp_get_data (&irmp_data))\r
        {\r
            // ir signal decoded, do something here...\r
            // irmp_data.protocol is the protocol, see irmp.h\r
            // irmp_data.address is the address/manufacturer code of ir sender\r
            // irmp_data.command is the command code\r
            // irmp_protocol_names[irmp_data.protocol] is the protocol name (if enabled, see irmpconfig.h)\r
        }\r
    }\r
}\r