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/*
* The MIT License (MIT)
*
* Copyright (c) 2016 Matthias P. Braendli, Maximilien Cuony
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include "stm32f4xx_conf.h"
#include "leds.h"
// This is a set of guards to make sure the FPU compile configuration
// is correct
#ifndef __FPU_USED
# error "no __FPU_USED"
#endif
#ifndef __FPU_PRESENT
# error "No __FPU_PRESENT"
#endif
#ifndef __GNUC__
# error "No __GNUC__"
#endif
#ifndef __VFP_FP__
# error "No VFP_FP"
#endif
#if defined(__SOFTFP__)
# error "SOFTFP"
#endif
void init(void);
void init()
{
/* Initialise the onboard peripherals
* Four LEDs and one push-button
*/
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA, ENABLE);
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOD, ENABLE);
// Configure PD12, PD13, PD14 and PD15 in output pushpull mode
GPIO_InitTypeDef GPIO_InitStructure;
GPIO_InitStructure.GPIO_Pin =
GPIOD_BOARD_LED_GREEN |
GPIOD_BOARD_LED_ORANGE |
GPIOD_BOARD_LED_RED |
GPIOD_BOARD_LED_BLUE;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_Init(GPIOD, &GPIO_InitStructure);
// Init PushButton
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN;
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL; // TODO is there an external pullup ?
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_Init(GPIOA, &GPIO_InitStructure);
/* Setup Watchdog
* The IWDG runs at 32kHz. With a prescaler of 32 -> 1kHz.
* Counting to 2000 / 1000 = 2 seconds
*/
IWDG_WriteAccessCmd(IWDG_WriteAccess_Enable);
IWDG_SetPrescaler(IWDG_Prescaler_32);
IWDG_SetReload(2000);
IWDG_Enable();
}
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