MQ-135空气质量传感器驱动

bigfanofloT

一、MQ-135空气质量传感器介绍
参考此帖http://club.gizwits.com/thread-6484-1-1.html
二、硬件连线
根据Nucleo-F767ZI原理图，我们选择arduino UNO接口的A1，即STM32F767ZIT6的PC0，ADC1通道10

三、完整源码
头文件如下：

1. /**
   
2.   ***********************************
   
3.   * @file    ADC/ADC_RegularConversion_Polling/Inc/main.h
   
4.   * @author  MCD Application Team
   
5.   * @version V1.0.2
   
6.   * @date    30-December-2016
   
7.   * @brief   Header for main.c module
   
8.   ***********************************
   
9.   * @attention
   
10.   *
    
11.   * <h2><center>© COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
    
12.   *
    
13.   * Redistribution and use in source and binary forms, with or without modification,
    
14.   * are permitted provided that the following conditions are met:
    
15.   *   1. Redistributions of source code must retain the above copyright notice,
    
16.   *      this list of conditions and the following disclaimer.
    
17.   *   2. Redistributions in binary form must reproduce the above copyright notice,
    
18.   *      this list of conditions and the following disclaimer in the documentation
    
19.   *      and/or other materials provided with the distribution.
    
20.   *   3. Neither the name of STMicroelectronics nor the names of its contributors
    
21.   *      may be used to endorse or promote products derived from this software
    
22.   *      without specific prior written permission.
    
23.   *
    
24.   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
    
25.   * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
    
26.   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
    
27.   * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
    
28.   * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
    
29.   * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
    
30.   * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
    
31.   * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
    
32.   * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
    
33.   * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
    
34.   *
    
35.   ***********************************
    
36.   */
    
37. 
    
38. /* Define to prevent recursive inclusion -------------------------------------*/
    
39. #ifndef __MAIN_H
    
40. #define __MAIN_H
    
41. 
    
42. /* Includes ------------------------------------------------------------------*/
    
43. #include "stm32f7xx_hal.h"
    
44. #include "STM32F7xx_hal_adc.h"
    
45. 
    
46. /* Exported types ------------------------------------------------------------*/
    
47. /* Exported constants --------------------------------------------------------*/
    
48. /* User can use this section to tailor ADCx instance used and associated
    
49.    resources */
    
50.    
    
51. /* Definition for ADCx clock resources */
    
52. #define ADCx                            ADC1
    
53. #define ADCx_CLK_ENABLE()               __HAL_RCC_ADC1_CLK_ENABLE()
    
54. #define ADCx_CHANNEL_GPIO_CLK_ENABLE()  __HAL_RCC_GPIOC_CLK_ENABLE()
    
55. 
    
56. #define ADCx_FORCE_RESET()              __HAL_RCC_ADC_FORCE_RESET()
    
57. #define ADCx_RELEASE_RESET()            __HAL_RCC_ADC_RELEASE_RESET()
    
58. 
    
59. /* Definition for ADCx Channel Pin */
    
60. #define ADCx_CHANNEL_PIN                GPIO_PIN_0//对应板卡A1
    
61. #define ADCx_CHANNEL_GPIO_PORT          GPIOC
    
62. 
    
63. /* Definition for ADCx's Channel */
    
64. #define ADCx_CHANNEL                    ADC_CHANNEL_10
    
65. #define SAMPLINGTIME                    ADC_SAMPLETIME_3CYCLES
    
66. 
    
67. /* Exported macro ------------------------------------------------------------*/
    
68. 
    
69. /* Exported functions ------------------------------------------------------- */
    
70. void MQ135_Init(void);
    
71. int MQ135_GetValue(void);
    
72. 
    
73. #endif /* __MAIN_H */
    
74. 
    
75. /*********** (C) COPYRIGHT STMicroelectronics ***END OF FILE**/
    

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源文件如下：

1. /**
   
2.   ***********************************
   
3.   * @file    ADC/ADC_RegularConversion_Polling/Src/main.c
   
4.   * @author  MCD Application Team
   
5.   * @version V1.0.2
   
6.   * @date    30-December-2016
   
7.   * @brief   This example describes how to use Polling mode to convert data.
   
8.   ***********************************
   
9.   * @attention
   
10.   *
    
11.   * <h2><center>© COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
    
12.   *
    
13.   * Redistribution and use in source and binary forms, with or without modification,
    
14.   * are permitted provided that the following conditions are met:
    
15.   *   1. Redistributions of source code must retain the above copyright notice,
    
16.   *      this list of conditions and the following disclaimer.
    
17.   *   2. Redistributions in binary form must reproduce the above copyright notice,
    
18.   *      this list of conditions and the following disclaimer in the documentation
    
19.   *      and/or other materials provided with the distribution.
    
20.   *   3. Neither the name of STMicroelectronics nor the names of its contributors
    
21.   *      may be used to endorse or promote products derived from this software
    
22.   *      without specific prior written permission.
    
23.   *
    
24.   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
    
25.   * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
    
26.   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
    
27.   * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
    
28.   * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
    
29.   * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
    
30.   * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
    
31.   * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
    
32.   * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
    
33.   * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
    
34.   *
    
35.   ***********************************
    
36.   */
    
37. 
    
38. /* Includes ------------------------------------------------------------------*/
    
39. #include "hal_mq135.h"
    
40. 
    
41. /** @addtogroup STM32F7xx_HAL_Examples
    
42.   * @{
    
43.   */
    
44. 
    
45. /** @addtogroup ADC_RegularConversion_Polling
    
46.   * @{
    
47.   */
    
48. 
    
49. /* Private typedef -----------------------------------------------------------*/
    
50. /* Private define ------------------------------------------------------------*/
    
51. /* Private macro -------------------------------------------------------------*/
    
52. /* Private variables ---------------------------------------------------------*/
    
53. /* ADC handler declaration */
    
54. ADC_HandleTypeDef    AdcHandle;
    
55. 
    
56. 
    
57. 
    
58. void MQ135_Init(void)
    
59. {
    
60.   ADC_ChannelConfTypeDef sConfig;
    
61.         
    
62.   GPIO_InitTypeDef          GPIO_InitStruct;
    
63.   /*##-1- Enable peripherals and GPIO Clocks #################################*/
    
64.   /* ADC Periph clock enable */
    
65.   ADCx_CLK_ENABLE();
    
66.   /* Enable GPIO clock ******************/
    
67.   ADCx_CHANNEL_GPIO_CLK_ENABLE();
    
68.   /*##-2- Configure peripheral GPIO ##########################################*/
    
69.   /* ADC Channel GPIO pin configuration */
    
70.   GPIO_InitStruct.Pin = ADCx_CHANNEL_PIN;
    
71.   GPIO_InitStruct.Mode = GPIO_MODE_ANALOG;
    
72.   GPIO_InitStruct.Pull = GPIO_NOPULL;
    
73.   HAL_GPIO_Init(ADCx_CHANNEL_GPIO_PORT, &GPIO_InitStruct);
    
74.         
    
75. 
    
76.   /*##-1- Configure the ADC peripheral #######################################*/
    
77.   AdcHandle.Instance          = ADCx;
    
78.   
    
79.   ADCx_CLK_ENABLE() ;
    
80.         ADCx_CHANNEL_GPIO_CLK_ENABLE();
    
81.   AdcHandle.Init.ClockPrescaler        = ADC_CLOCKPRESCALER_PCLK_DIV4;
    
82.   AdcHandle.Init.Resolution            = ADC_RESOLUTION_12B;
    
83.   AdcHandle.Init.ScanConvMode          = DISABLE;                       /* Sequencer disabled (ADC conversion on only 1 channel: channel set on rank 1) */
    
84.   AdcHandle.Init.ContinuousConvMode    = DISABLE;                       /* Continuous mode disabled to have only 1 conversion at each conversion trig */
    
85.   AdcHandle.Init.DiscontinuousConvMode = DISABLE;                       /* Parameter discarded because sequencer is disabled */
    
86.   AdcHandle.Init.NbrOfDiscConversion   = 0;
    
87.   AdcHandle.Init.ExternalTrigConvEdge  = ADC_EXTERNALTRIGCONVEDGE_NONE;        /* Conversion start trigged at each external event */
    
88.   AdcHandle.Init.ExternalTrigConv      = ADC_EXTERNALTRIGCONV_T1_CC1;
    
89.   AdcHandle.Init.DataAlign             = ADC_DATAALIGN_RIGHT;
    
90.   AdcHandle.Init.NbrOfConversion       = 1;
    
91.   AdcHandle.Init.DMAContinuousRequests = DISABLE;
    
92.   AdcHandle.Init.EOCSelection          = DISABLE;
    
93. 
    
94.   if (HAL_ADC_Init(&AdcHandle) != HAL_OK)
    
95.   {
    
96.     /* ADC initialization Error */
    
97. 
    
98.   }
    
99. 
    
100.   /*##-2- Configure ADC regular channel ######################################*/
     
101. 
     
102.   sConfig.Channel      = ADCx_CHANNEL;                /* Sampled channel number */
     
103.   sConfig.Rank         = 1;          /* Rank of sampled channel number ADCx_CHANNEL */
     
104.   sConfig.SamplingTime = ADC_SAMPLETIME_56CYCLES;    /* Sampling time (number of clock cycles unit) */
     
105.   sConfig.Offset = 0;                                 /* Parameter discarded because offset correction is disabled */
     
106. 
     
107.   if (HAL_ADC_ConfigChannel(&AdcHandle, &sConfig) != HAL_OK)
     
108.   {
     
109.     /* Channel Configuration Error */
     
110. 
     
111.   }
     
112. 
     
113.   if (HAL_ADC_Start(&AdcHandle) != HAL_OK)
     
114.   {
     
115.     /* Start Conversation Error */
     
116. 
     
117.   }
     
118. 
     
119.   
     
120. }
     
121. //just return adc raw value.
     
122. int MQ135_GetValue(void)
     
123. {
     
124.         if (HAL_ADC_Start(&AdcHandle) != HAL_OK)
     
125.   {
     
126. 
     
127.   }
     
128.     return HAL_ADC_GetValue(&AdcHandle);
     
129. }
     
130.         
     
131. 
     
132. 
     
133. /**
     
134.   * @}
     
135.   */
     
136. 
     
137. /**
     
138.   * @}
     
139.   */
     
140. 
     
141. /*********** (C) COPYRIGHT STMicroelectronics ***END OF FILE**/
     

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本系列帖子目录：
http://club.gizwits.com/thread-6544-1-1.html

brad

请问一下这个芯片如果是STM32F103C8的，驱动里面的串口是不是直接对应改一改还有hal库换一下就能直接用？