1. 使用 CubeMx 创建 ADC 工程
打开 CubeMx 软件，选中我们此次使用的单片机型号 STM32G030F6P6 ，点击 StartProject.

. P* I, h5 \" v# ?4 Y. i& u先配置一下串口，用来打印相关信息

+ P' R* K- t4 f1 P2 ]: w
再来配置 ADC
3 |3 E7 u% E" C: H

- _1 P) {. u6 ]4 Y  i/ x) E

, O; W2 R& e0 b) w5 ?0 W
1 C1 ~1 i0 W) F& K3 k配置DMA

- \* S* o' B1 ?0 W
* F  N- B/ D6 _4 Z" m1 F. NPS：DMA　需要要配置成循环模式，否则只填满一次缓存数组后就停止工作，需要重调用启动 DMA 的函数.

2 H6 P( Y+ o9 X3 H配置时钟

ps:本实验使用内部高速时钟，未使用外部晶振，主频设置为最大的64MHZ.
, g8 d: R4 N- U
配置工程相关选项

5 u% F& c4 ~+ x" D2 r

! t; s$ |: _0 m  J. H* U
配置完成后点击右上角 GENERATE CODE完成工程的创建

3 y) A- V0 L6 J4 P( p2 i& e; m2. 编程
2.1 串口相关的代码
6 ?; {/ A* p  e' W- m因打印相关信息需要使用 printf ，需要包含 stdio.h 的头文件，且需要重新设 fputc 的函数
5 N: e' h7 Q" C

1. /* Includes ------------------------------------------------------------------*/
   
2. #include "main.h"
   
3. 
   
4. /* Private includes ----------------------------------------------------------*/
   9 }. F6 |" n- r; h. C9 t, a( i6 W" V
5. /* USER CODE BEGIN Includes */
   . L% o: l5 P8 H& A' _
6. #include "stdio.h"
   * \) B0 C1 N& h- Y1 w, O
7. /* USER CODE END Includes */
   
8. 
   
9. /* Private typedef -----------------------------------------------------------*/
   
10. /* USER CODE BEGIN PTD */
    
11. 
    & A+ j* q- z% G* T$ G' M4 u
12. /* USER CODE END PTD */
    3 G5 f% D" w; z  L' ?0 ?; J
13. 
    
14. /* Private define ------------------------------------------------------------*/
    
15. /* USER CODE BEGIN PD */
    
16. /* USER CODE END PD */
    
17. 
    6 m, g, I* y9 b  J
18. /* Private macro -------------------------------------------------------------*/
    
19. /* USER CODE BEGIN PM */
    1 @3 S+ e! K7 S% c- ~3 b* \  _
20. 
    + K1 P- d9 {! _8 L
21. /* USER CODE END PM */
    ) c" F  O% w( `; X! U  A
22. 
    
23. /* Private variables ---------------------------------------------------------*/
    2 _) K' j0 I' R
24. ADC_HandleTypeDef hadc1;
    
25. DMA_HandleTypeDef hdma_adc1;
    - }5 Z7 _; i7 K1 R; K% z, H
26. 
    
27. UART_HandleTypeDef huart1;
    
28. 
    ) Q7 h, ~+ [9 c& Q
29. /* USER CODE BEGIN PV */
    
30. 
    + r# y1 {9 U& Y4 y: M( o
31. /* USER CODE END PV */
    ( D: ?9 \/ M4 ?
32. 
    
33. /* Private function prototypes -----------------------------------------------*/
    
34. void SystemClock_Config(void);
    ( v) a5 _5 H  @
35. static void MX_GPIO_Init(void);
    
36. static void MX_DMA_Init(void);
    
37. static void MX_ADC1_Init(void);
    
38. static void MX_USART1_UART_Init(void);
    $ ^* e: \6 G) s; I, I
39. /* USER CODE BEGIN PFP */
    ; _5 F5 H/ \+ N0 @2 I( ^* x$ y/ N
40. 
    1 k% ~2 V% p( }, R
41. /* USER CODE END PFP */
    
42. 
    6 N" W- ^2 K9 j3 N& n3 r
43. /* Private user code ---------------------------------------------------------*/
    5 Z: N  }! a$ L/ _# ?9 Q* D. f; I
44. /* USER CODE BEGIN 0 */
    
45. __IO uint16_t adcCovValueBuff[30][2] = {0};        //存放ADC的值 2通道  每个通道存放30个值，由DMA循环写入
    
46. uint16_t adcAverageBuff[2] = {0};        //对每个通道30个ADC值取平均值
    $ Z% C) }. B" n# ~  f# k. S' U# [
47. 
    & Y/ k6 v9 W9 |' m6 M- H
48. 
    . s! N1 p+ q/ N. I8 [
49. #ifdef __GNUC_
    / m8 n6 s) S" H8 T! z. A
50. #define PUTCHAR_PROTOTYPE int __io_putchar(int ch)
    ; [6 b) h  O6 j! [
51. #else
    
52. #define PUTCHAR_PROTOTYPE int fputc(int ch, FILE *f)
    
53. #endif
    1 Q  g+ z( c- g) b" Q+ e. p
54. PUTCHAR_PROTOTYPE
    
55. {
    
56.     HAL_UART_Transmit(&huart1, (uint8_t*)&ch, 1, 0xFFFF);
    
57. 
    
58.     return ch;
    * T* j% c8 V8 y  s& T  {5 }& E
59. }
    
60. 
    1 ^, G) N! |9 \! a
61. /* USER CODE END 0 */

复制代码

  i( o1 @9 O1 e5 M+ K! h( W2.2 main 函数
% q) x) I, d  k* I6 a7 S0 U( h: n

1. /**
   $ M- Y5 k; y0 F% L7 l& {( H
2.   * @brief  The application entry point.
   9 N$ r5 E" S- w+ u
3.   * @retval int
   
4.   */
   ) R( o+ M( N; T0 x! q  ^$ y
5. int main(void)
   
6. {
   
7.     /* USER CODE BEGIN 1 */
   1 {& J. R" @" N5 W* m+ o% c) b
8.     float votage = 0;
   ! r8 M* d% b8 ?" F; G! c9 B) |5 I' H# X
9.     uint32_t sum = 0;
   & p1 R1 Q% m' c7 }( x7 G" K
10.     /* USER CODE END 1 */
    0 s% C( z( L& [2 ?
11. 
    
12.     /* MCU Configuration--------------------------------------------------------*/
    ( C$ N$ R' g' p' ~
13. 
    ; r+ D% _3 A* p8 D
14.     /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
    6 c2 Z. h# D7 I/ j* ~2 y# N
15.     HAL_Init();
    
16. 
    
17.     /* USER CODE BEGIN Init */
    
18. 
    6 H; N% w" m* D# v" Q
19.     /* USER CODE END Init */
    4 p- S" a9 T, r0 `$ I
20. 
    
21.     /* Configure the system clock */
    
22.     SystemClock_Config();
    5 O; f8 j8 ]- K7 r
23. 
    8 x" R  }/ A/ _. L/ E
24.     /* USER CODE BEGIN SysInit */
    
25. 
    
26.     /* USER CODE END SysInit */
    
27. 
    
28.     /* Initialize all configured peripherals */
    
29.     MX_GPIO_Init();
    7 p  f1 Z5 D( `6 {( D
30.     MX_DMA_Init();
    
31.     MX_ADC1_Init();
    
32.     MX_USART1_UART_Init();
    & H) V6 D5 P9 T$ j6 t
33.     /* USER CODE BEGIN 2 */
    $ v+ p( X' Z# Q. I+ j& x2 {
34.     printf("stm32g030f6 adc demo...... \n");
    % E' s9 g7 J" t, b% O" m  ]
35.     HAL_ADC_Start_DMA(&hadc1, (uint32_t*)adcCovValueBuff, 60);
    
36.     /* USER CODE END 2 */
    
37. 
    
38.     /* Infinite loop */
    9 y) }7 z" z- d4 Z$ i
39.     /* USER CODE BEGIN WHILE */
    
40.     while(1)
    & L% h* O) _$ d3 q2 U
41.     {
    % V9 @) ]) O7 p, v4 P
42.         for(uint8_t i = 0; i < 2; i++)
    5 _6 ?" E$ L7 ]' _1 c2 N- e
43.         {
    & w4 O# {" C- Y3 Q( z
44.             for(uint8_t count = 0; count < 30; count++)
    
45.             {
    2 K2 F$ |9 k; C7 ~, d
46.                 sum += adcCovValueBuff[count];
    
47.             }
    ! @/ q9 D! f& d0 t
48.             adcAverageBuff = sum / 30;
    & r3 I* }; ?" i$ D
49.             sum = 0;
    
50.         }
    / k$ J* _7 v( D; V+ h! |2 v
51. 
    7 E. a  i' G0 L6 C0 b; U
52.         printf("---------------------------------------- \n");
    ! V) w8 z) A# q, P+ [$ Z0 \. f
53.         printf("ADC Channel01 Value:0x%04X \n", adcAverageBuff[0]);
    
54.         votage = (float) adcAverageBuff[0] / 4096 * (float)3.3;
    
55.         printf("ADC Channel01 Voltage:%f V \n", votage);
    
56.         printf("ADC Channel02 Value:0x%04X \n", adcAverageBuff[1]);
    
57.         votage = (float) adcAverageBuff[1] / 4096 * (float)3.3;
    
58.         printf("ADC Channel02 Voltage:%f V \n", votage);
    
59.         printf("---------------------------------------- \n");
    * F- W" n/ n% I- ~' c7 k: U
60.         HAL_Delay(1000);
    
61.         /* USER CODE END WHILE */
    
62. 
    
63.         /* USER CODE BEGIN 3 */
    
64.     }
    
65.     /* USER CODE END 3 */
    3 x- v5 T, ~3 m2 `* h# h
66. }

复制代码

, _) l' c" `* u1 |. f/ m7 ~3 s2.3 外设的初始化函数
外设的初始化函数都是由 CubeMx 生成的，因为我们只用 DMA 搬运数据，未使用 DMA　的中断功能，故初始化　DMA　时可将中断配置函数注释。

2 f6 _3 `# J" J2 N

1. /**
   * I2 [! u2 U" e5 f7 h  R
2.   * @brief ADC1 Initialization Function
   
3.   * @param None
   ) w5 ?( X& C7 f( Y2 }! `- h9 @
4.   * @retval None
   8 b/ q( s" R! F  z" t
5.   */
   
6. static void MX_ADC1_Init(void)
   7 g4 ]* j; T) a9 w9 p: d
7. {
   $ D+ {9 J5 e' [& j# P6 Y2 {% u
8. 
   ! ]" g' v8 \. y0 A/ |
9.     /* USER CODE BEGIN ADC1_Init 0 */
   
10. 
    
11.     /* USER CODE END ADC1_Init 0 */
    6 P' b6 @) K2 H
12. 
    0 e0 v( K/ D7 i0 C: S" c. w% ?; _
13.     ADC_ChannelConfTypeDef sConfig = {0};
    - p- U4 N3 b4 L6 a$ L" Q4 E3 s
14. 
    
15.     /* USER CODE BEGIN ADC1_Init 1 */
    ) \% d7 k) F/ M6 d5 l! [& o
16. 
    
17.     /* USER CODE END ADC1_Init 1 */
    
18.     /** Configure the global features of the ADC (Clock, Resolution, Data Alignment and number of conversion)
    
19.     */
    
20.     hadc1.Instance = ADC1;
    6 J, s8 c. f/ l. I% D; H
21.     hadc1.Init.ClockPrescaler = ADC_CLOCK_SYNC_PCLK_DIV2;
    & l  U: J- ]% l; ~3 b
22.     hadc1.Init.Resolution = ADC_RESOLUTION_12B;
    
23.     hadc1.Init.DataAlign = ADC_DATAALIGN_RIGHT;
      R; [& s; |0 G5 r# N. h
24.     hadc1.Init.ScanConvMode = ADC_SCAN_ENABLE;
    
25.     hadc1.Init.EOCSelection = ADC_EOC_SINGLE_CONV;
    
26.     hadc1.Init.LowPowerAutoWait = DISABLE;
    
27.     hadc1.Init.LowPowerAutoPowerOff = DISABLE;
    
28.     hadc1.Init.ContinuousConvMode = ENABLE;
    
29.     hadc1.Init.NbrOfConversion = 2;
    
30.     hadc1.Init.DiscontinuousConvMode = DISABLE;
    6 E) J3 g$ I+ }) h: ]" }9 j
31.     hadc1.Init.ExternalTrigConv = ADC_SOFTWARE_START;
    
32.     hadc1.Init.ExternalTrigConvEdge = ADC_EXTERNALTRIGCONVEDGE_NONE;
    ) o( }* E: a3 B& z
33.     hadc1.Init.DMAContinuousRequests = ENABLE;
    ' e5 T& h5 q4 S% k
34.     hadc1.Init.Overrun = ADC_OVR_DATA_PRESERVED;
    9 G  \1 y  X; C7 R* S
35.     hadc1.Init.SamplingTimeCommon1 = ADC_SAMPLETIME_12CYCLES_5;
    - ~+ q# o; P! P( O3 \
36.     hadc1.Init.SamplingTimeCommon2 = ADC_SAMPLETIME_12CYCLES_5;
    
37.     hadc1.Init.OversamplingMode = DISABLE;
    ( y) A' h% [; x; U
38.     hadc1.Init.TriggerFrequencyMode = ADC_TRIGGER_FREQ_HIGH;
    
39.     if(HAL_ADC_Init(&hadc1) != HAL_OK)
    
40.     {
    
41.         Error_Handler();
    ! h9 ~" }2 A! B) C
42.     }
    
43.     /** Configure Regular Channel
    
44.     */
    5 z8 _& h5 R- o& }
45.     sConfig.Channel = ADC_CHANNEL_7;
    ! Z0 f1 j! [  _
46.     sConfig.Rank = ADC_REGULAR_RANK_1;
    ' U$ n1 n; Q, ^; {7 r
47.     sConfig.SamplingTime = ADC_SAMPLINGTIME_COMMON_1;
    
48.     if(HAL_ADC_ConfigChannel(&hadc1, &sConfig) != HAL_OK)
    ' I, h5 `+ B$ E* [' V8 O- M
49.     {
    " x7 ^' Q' E- G1 \" m4 a5 R% w0 {
50.         Error_Handler();
    
51.     }
      \) S2 o# `" i, a) d
52.     /** Configure Regular Channel
    9 {( P3 D8 _0 ?7 y# `1 \: E
53.     */
    
54.     sConfig.Channel = ADC_CHANNEL_8;
    
55.     sConfig.Rank = ADC_REGULAR_RANK_2;
    - i5 c6 a) @) t# N( Y
56.     sConfig.SamplingTime = ADC_SAMPLINGTIME_COMMON_2;
    
57.     if(HAL_ADC_ConfigChannel(&hadc1, &sConfig) != HAL_OK)
    
58.     {
    
59.         Error_Handler();
    
60.     }
    1 E/ s1 I& o6 j5 D4 I% y& g$ V
61.     /* USER CODE BEGIN ADC1_Init 2 */
    1 ^* N5 v3 G( \: r1 R  Y
62. 
    
63.     /* USER CODE END ADC1_Init 2 */
    
64. 
    $ A, f+ b, @8 j( \: A: \0 x2 x
65. }
    
66. 
    5 ?. c2 S* U# u( R' [
67. /**
    
68.   * @brief USART1 Initialization Function
    
69.   * @param None
    
70.   * @retval None
    
71.   */
    
72. static void MX_USART1_UART_Init(void)
    ( h" m# |4 E) _: I) l" G7 V. _
73. {
    8 u. l1 x! S1 v1 o5 t; Q
74. 
    7 s& _2 M0 f# H" ?: n! ^: q
75.     /* USER CODE BEGIN USART1_Init 0 */
    
76. 
    & E) u& t% G5 o6 A, L$ P, o# T
77.     /* USER CODE END USART1_Init 0 */
    : E: t) x9 a* J" W1 Q
78. 
    
79.     /* USER CODE BEGIN USART1_Init 1 */
    4 ~' f5 R& v# w* b; d  u! w
80. 
    : B" d: _/ z5 t# r8 \! o
81.     /* USER CODE END USART1_Init 1 */
    1 f) o! J1 }, I& ~  e0 v' [
82.     huart1.Instance = USART1;
    
83.     huart1.Init.BaudRate = 115200;
    " V4 ^# _0 v. F$ x# a) U  _
84.     huart1.Init.WordLength = UART_WORDLENGTH_8B;
    & \) |( L0 i' w) B
85.     huart1.Init.StopBits = UART_STOPBITS_1;
    
86.     huart1.Init.Parity = UART_PARITY_NONE;
    : |, e. N! R4 g
87.     huart1.Init.Mode = UART_MODE_TX_RX;
    
88.     huart1.Init.HwFlowCtl = UART_HWCONTROL_NONE;
    $ X$ ^" o. e5 n6 J
89.     huart1.Init.OverSampling = UART_OVERSAMPLING_16;
    
90.     huart1.Init.OneBitSampling = UART_ONE_BIT_SAMPLE_DISABLE;
      }1 H$ X) S/ v9 ^6 B5 `  S8 \6 m* M1 Z
91.     huart1.Init.ClockPrescaler = UART_PRESCALER_DIV1;
    ( x5 }7 Y0 S& R2 v, q  ~# I4 F. I: r
92.     huart1.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_NO_INIT;
    
93.     if(HAL_UART_Init(&huart1) != HAL_OK)
    
94.     {
    + ]0 i" _3 L1 H5 l! Q
95.         Error_Handler();
    
96.     }
    8 I6 g; d9 W/ I/ z& w5 V0 }
97.     if(HAL_UARTEx_SetTxFifoThreshold(&huart1, UART_TXFIFO_THRESHOLD_1_8) != HAL_OK)
    
98.     {
    ( q- W  P8 ^! h: I+ J5 h
99.         Error_Handler();
    
100.     }
     
101.     if(HAL_UARTEx_SetRxFifoThreshold(&huart1, UART_RXFIFO_THRESHOLD_1_8) != HAL_OK)
     
102.     {
     * \- a4 V) s0 M5 N" `- H
103.         Error_Handler();
     8 I' e1 w& K  c+ f
104.     }
     
105.     if(HAL_UARTEx_DisableFifoMode(&huart1) != HAL_OK)
     
106.     {
     
107.         Error_Handler();
     
108.     }
     
109.     /* USER CODE BEGIN USART1_Init 2 */
     
110. 
     
111.     /* USER CODE END USART1_Init 2 */
     7 l8 v2 B2 s2 R7 |
112. 
       \; f! L. A/ a2 Q5 q3 [
113. }
     1 d% T/ t/ Z: e5 w
114. 
     5 C4 B9 ]* z3 \- v
115. /**
     
116.   * Enable DMA controller clock
     6 f( g8 T5 f% _2 R: c
117.   */
     . C" m) ?; n& k/ j; ?: p8 h! u
118. static void MX_DMA_Init(void)
     5 e4 l5 |, E! q9 S& f' b6 Y7 W
119. {
     
120. 
     3 l' O* D: A, ?* m& l  h
121.     /* DMA controller clock enable */
     $ L$ l' H/ F, j2 p. E3 b( {
122.     __HAL_RCC_DMA1_CLK_ENABLE();
     2 n9 C7 e2 ^- E$ s1 @
123. 
     
124.     /* DMA interrupt init */
     ' d+ t& \& A+ F
125.     /* DMA1_Channel1_IRQn interrupt configuration */
     
126. 
     5 Z% V# _4 M* H; k. t
127.     //HAL_NVIC_SetPriority(DMA1_Channel1_IRQn, 0, 0);　//未使用中断功能，故注释　
     
128.     //HAL_NVIC_EnableIRQ(DMA1_Channel1_IRQn);
     
129. 
     ( {* _' @3 r0 m" ~
130. }
     
131. 
     
132. /**
     
133.   * @brief GPIO Initialization Function
     
134.   * @param None
     $ s5 Z9 m2 D& @: l/ \
135.   * @retval None
     
136.   */
     
137. static void MX_GPIO_Init(void)
     
138. {
     - A  L. R, H& k
139. 
     
140.     /* GPIO Ports Clock Enable */
     
141.     __HAL_RCC_GPIOB_CLK_ENABLE();
     
142.     __HAL_RCC_GPIOA_CLK_ENABLE();
     7 h7 l- e$ A# ~7 x* N9 \3 K9 b
143. 
     . J$ R) v+ C* _9 A, o
144. }

复制代码

: s& T; t9 ?- i. i& m
3. 实验现象
编译并将程序下载到开发板中,连接串口助手并打开；
$ t# @/ l# L0 K1 w4 E实验现象：每秒打印一次当前两个通道的　ADC　值及换算后的电压.
3 _. @8 f( |8 w
6 e! L  g3 ]- ^$ Q" q
$ \: D# j, R  b8 K' l( G