Posiłkowałem się tym przykładem, który dostosowałem do potrzeb mojej płytki:
http://www.muhittinkaplan.com/?p=287
Tak kod wygląda u mnie:
[syntax=c]* File Name : main.c
* Description : Main program body
******************************************************************************
** This notice applies to any and all portions of this file
* that are not between comment pairs USER CODE BEGIN and
* USER CODE END. Other portions of this file, whether
* inserted by the user or by software development tools
* are owned by their respective copyright owners.
*
* COPYRIGHT(c) 2018 STMicroelectronics
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. Neither the name of STMicroelectronics nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
******************************************************************************
*/
/* Includes ------------------------------------------------------------------*/
#include "main.h"
#include "stm32f4xx_hal.h"
/* USER CODE BEGIN Includes */
#include "dwt_stm32_delay.h"
/* USER CODE END Includes */
/* Private variables ---------------------------------------------------------*/
/* USER CODE BEGIN PV */
/* Private variables ---------------------------------------------------------*/
uint16_t Rh,RhDec,Temp,TempDec,ChkSum;
/* USER CODE END PV */
/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
static void MX_GPIO_Init(void);
/* USER CODE BEGIN PFP */
/* Private function prototypes -----------------------------------------------*/
GPIO_InitTypeDef GPIO_InitStruct;
void TermometrPinOut(void)
{
__HAL_RCC_GPIOE_CLK_ENABLE();
GPIO_InitStruct.Pin = DHT11_Pin;
GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
HAL_GPIO_Init(DHT11_GPIO_Port, &GPIO_InitStruct);
}
void TermometrPinIn(void)
{
__HAL_RCC_GPIOE_CLK_ENABLE();
GPIO_InitStruct.Pin = DHT11_Pin;
GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
GPIO_InitStruct.Pull = GPIO_NOPULL;
HAL_GPIO_Init(DHT11_GPIO_Port, &GPIO_InitStruct);
}
void DHT11Read (uint16_t *Rh, uint16_t *RhDec, uint16_t *Temp, uint16_t *TempDec, uint16_t *ChkSum)
{
uint16_t temp;
uint8_t i,j;
uint16_t Wartosc[5]={0x00, 0x00, 0x00, 0x00, 0x00};
TermometrPinOut();
HAL_GPIO_WritePin(DHT11_GPIO_Port,DHT11_Pin,GPIO_PIN_RESET);
DWT_Delay_us(18000);
HAL_GPIO_WritePin(DHT11_GPIO_Port,DHT11_Pin,GPIO_PIN_SET);
DWT_Delay_us(40);
TermometrPinIn();
while(!HAL_GPIO_ReadPin(DHT11_GPIO_Port, DHT11_Pin));
while(HAL_GPIO_ReadPin(DHT11_GPIO_Port, DHT11_Pin));
for (j = 0; j<5; j++){
for (i = 0; i<5; i++){
while(!HAL_GPIO_ReadPin(DHT11_GPIO_Port, DHT11_Pin));
DWT->CYCCNT = 0;
while(HAL_GPIO_ReadPin(DHT11_GPIO_Port, DHT11_Pin));
temp=(DWT -> CYCCNT)/100;
if (temp<30){
Wartosc[j]=Wartosc[j]<<1;
}
else {
Wartosc[j]=Wartosc[j]<<1;
Wartosc[j]=Wartosc[j]+1;
}
}
}
*Rh = Wartosc[0];
*RhDec = Wartosc[1];
*Temp=Wartosc[2];
*TempDec=Wartosc[3];
*ChkSum=Wartosc[4];
}
/* USER CODE END PFP */
/* USER CODE BEGIN 0 */
/* USER CODE END 0 */
int main(void)
{
/* USER CODE BEGIN 1 */
/* USER CODE END 1 */
/* MCU Configuration----------------------------------------------------------*/
/* Reset of all peripherals, Initializes the Flash interface and the Systick. */
HAL_Init();
/* USER CODE BEGIN Init */
/* USER CODE END Init */
/* Configure the system clock */
SystemClock_Config();
/* USER CODE BEGIN SysInit */
/* USER CODE END SysInit */
/* Initialize all configured peripherals */
MX_GPIO_Init();
/* USER CODE BEGIN 2 */
DWT_Delay_Init();
/* USER CODE END 2 */
/* Infinite loop */
/* USER CODE BEGIN WHILE */
while (1)
{
DHT11Read(&Rh,&RhDec,&Temp,&TempDec,&ChkSum);
HAL_Delay(1000);
/* USER CODE END WHILE */
/* USER CODE BEGIN 3 */
}
/* USER CODE END 3 */
}[/syntax]
No i nie wiem co jest, wyrzuca mi wyniki, które są błędne, w ogole się nie zmieniają. Nie wiem za bardzo co poprawić. Ma ktoś może jakiś pomysł?Statystyki: Napisane przez coolwilk — 6 sty 2018, o 22:12
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