Светодиод бежит по кругу только с заданным максимальным значением, как изменять задержку нажатием кнопки? меняя получается скорость мигания по кругу. полный код прикреплен.
| C |
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| /**
******************************************************************************
* @file main.c
* @author MCD Application Team
* @version V1.0.0
* @date 19-September-2011
* @brief Main program body
******************************************************************************
* @attention
*
* THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
* WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE
* TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY
* DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING
* FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
* CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
*
* <h2><center>© COPYRIGHT 2011 STMicroelectronics</center></h2>
******************************************************************************
*/
/* Includes ------------------------------------------------------------------*/
#include "main.h"
#include "stm32f4xx.h"
//#include "stm324xg_eval.h"
__IO uint32_t TimingDelay;
__IO uint8_t UserButtonPressed = 0x00;
uint8_t boolvinkl = 0;
uint16_t i = 0;
uint8_t j = 0;
/* Private function prototypes -----------------------------------------------*/
static void Demo_Exec(void);
//uint8_t togglecounter = 0x00;
//uint8_t flag = 0x01;
//uint8_t p = 0;
/* Private functions ---------------------------------------------------------*/
/**
* @brief Main program.
* @param None
* @retval None
*/
int main(void)
{
RCC_ClocksTypeDef RCC_Clocks;
/* Initialize LEDs and User_Button on STM32F4-Discovery --------------------*/
STM_EVAL_PBInit(BUTTON_USER, BUTTON_MODE_EXTI);
STM_EVAL_LEDInit(LED3);
STM_EVAL_LEDInit(LED4);
STM_EVAL_LEDInit(LED5);
STM_EVAL_LEDInit(LED6);
/* SysTick end of count event each 10ms */
RCC_GetClocksFreq(&RCC_Clocks);
SysTick_Config(RCC_Clocks.HCLK_Frequency / 100); //прерывание 0,1с
Demo_Exec();
}
/**
* @brief Execute the demo application.
* @param None
* @retval None
*/
void Delay(__IO uint32_t nTime)
{
TimingDelay = nTime;
while(TimingDelay != 0);
}
void TimingDelay_Decrement(void) // вызывается прерывание по системного таймеру
//проверяет если таймер Delay не равно 0. уменьшает SysTick
{
i++;
if(boolvinkl==0 && STM_EVAL_PBGetState(BUTTON_USER) == Bit_SET) // проверяем если boolvinkl==0 подымаем флаг. если boolvinkl = 1. меняется значение массива temp[j]
// и обнуляем.
// проверяем если temp[j] дошло до потолка j=0.
{
boolvinkl = 1;
j++;
i=0;
if(j==4) // градации
j = 0;
}
if (TimingDelay != 0x00)
{
TimingDelay--;
}
}
static void Demo_Exec(void)
{
uint8_t max = 100; // максимальное значение прерывания
uint8_t temp[] = {0, 25, 50, 75}; // градации, отнимаем от максимального значения и получаем меньше задержку
//uint8_t togglecounter == 0;
while(1)
{
for(uint32_t i = 0; i != max; i += temp[j])
{
if(temp[j] !=max)
{
STM_EVAL_LEDOn (LED3);
STM_EVAL_LEDOff(LED5);
STM_EVAL_LEDOff(LED6);
STM_EVAL_LEDOff(LED4);
Delay(max);
}
if(temp[j] !=max)
{
STM_EVAL_LEDOff(LED3);
STM_EVAL_LEDOn (LED5);
STM_EVAL_LEDOff(LED6);
STM_EVAL_LEDOff(LED4);
Delay(max);
}
if(temp[j] !=max)
{
STM_EVAL_LEDOff(LED3);
STM_EVAL_LEDOff (LED5);
STM_EVAL_LEDOn (LED6);
STM_EVAL_LEDOff(LED4);
Delay(max);
}
if(temp[j] !=max)
{
STM_EVAL_LEDOff (LED3);
STM_EVAL_LEDOff(LED5);
STM_EVAL_LEDOff(LED6);
STM_EVAL_LEDOn (LED4);
Delay(max);
}
}
}
/**
* @brief Inserts a delay time.
* @param nTime: specifies the delay time length, in 10 ms.
* @retval None
*/
/**
* @brief Decrements the TimingDelay variable.
* @param None
* @retval None
*/
/**
* @}
*/
/******************* (C) COPYRIGHT 2011 STMicroelectronics *****END OF FILE****/ |
|
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