irmp-main-stm32.c

   1 /*---------------------------------------------------------------------------------------------------------------------------------------------------
   2  * irmp-main-stm32.c - demo main module to test IRMP decoder on STM32
   3  *
   4  * Copyright (c) 2009-2015 Frank Meyer - frank(at)fli4l.de
   5  *
   6  * $Id: irmp-main-stm32.c,v 1.1 2016/01/12 11:55:05 fm Exp $
   7  *
   8  * This demo module is runnable on STM32
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or
  13  * (at your option) any later version.
  14  *---------------------------------------------------------------------------------------------------------------------------------------------------
  15  */
  16
  17 #include "irmp.h"
  18
  19 #ifndef F_CPU
  20 #error F_CPU unknown
  21 #endif
  22
  23 uint32_t
  24 SysCtlClockGet(void)
  25 {
  26     RCC_ClocksTypeDef RCC_ClocksStatus;
  27     RCC_GetClocksFreq(&RCC_ClocksStatus);
  28     return RCC_ClocksStatus.SYSCLK_Frequency;
  29 }
  30
  31 void
  32 timer2_init (void)
  33 {
  34     TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
  35     NVIC_InitTypeDef NVIC_InitStructure;
  36     RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE);
  37
  38     TIM_TimeBaseStructure.TIM_ClockDivision                 = TIM_CKD_DIV1;
  39     TIM_TimeBaseStructure.TIM_CounterMode                   = TIM_CounterMode_Up;
  40     TIM_TimeBaseStructure.TIM_Period                        = 7;
  41     TIM_TimeBaseStructure.TIM_Prescaler                     = ((F_CPU / F_INTERRUPTS)/8) - 1;
  42     TIM_TimeBaseInit(TIM2, &TIM_TimeBaseStructure);
  43
  44     TIM_ITConfig(TIM2, TIM_IT_Update, ENABLE);
  45
  46     NVIC_InitStructure.NVIC_IRQChannel                      = TIM2_IRQn;
  47     NVIC_InitStructure.NVIC_IRQChannelCmd                   = ENABLE;
  48     NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority    = 0x0F;
  49     NVIC_InitStructure.NVIC_IRQChannelSubPriority           = 0x0F;
  50     NVIC_Init(&NVIC_InitStructure);
  51
  52     TIM_Cmd(TIM2, ENABLE);
  53 }
  54
  55 void
  56 TIM2_IRQHandler(void)                                                       // Timer2 Interrupt Handler
  57 {
  58   TIM_ClearITPendingBit(TIM2, TIM_IT_Update);
  59   (void) irmp_ISR();                                                        // call irmp ISR
  60   // call other timer interrupt routines...
  61 }
  62
  63 int
  64 main (void)
  65 {
  66     IRMP_DATA irmp_data;
  67
  68     irmp_init();                                                            // initialize irmp
  69     timer2_init();                                                          // initialize timer2
  70
  71     for (;;)
  72     {
  73         if (irmp_get_data (&irmp_data))
  74         {
  75             // ir signal decoded, do something here...
  76             // irmp_data.protocol is the protocol, see irmp.h
  77             // irmp_data.address is the address/manufacturer code of ir sender
  78             // irmp_data.command is the command code
  79             // irmp_protocol_names[irmp_data.protocol] is the protocol name (if enabled, see irmpconfig.h)
  80         }
  81     }
  82 }