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Published on 2023-9-23 20:52 Only look at the author

Unboxing and Review of NUCLEO-F722ZET6: Beginner's Diary Part 3 [Copy link]

<div class='showpostmsg'># Unboxing and Review of NUCLEO-F722ZET6 Novice’s Diary Part 3 Continuing from the previous post, I originally planned to use Arduino to write the project code, but I was not very good at it. I felt that there were too few parameters that could be adjusted for the peripherals, and I was too lazy to write the driver myself, so I turned to Keil5 and CubeMX. ... After tinkering for a while, I finally figured out the driver for the brushless motor. It was so bad. ... # CubeMX configuration 
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<img style="cursor:pointer;" id="aimg_734838" aid="734838" src="/bbs/static/image/common/none.gif" onclick="zoom(this, this.getAttribute('zoomfile'), 0, 0, '0')" zoomfile="//bbs.eeworld.com.cn/data/attachment/forum/202309/23/195648mg0pgdm73ng86qr6.png" file="//bbs.eeworld.com.cn/data/attachment/forum/202309/23/195648mg0pgdm73ng86qr6.png" inpost="1" onmouseover="showMenu({'ctrlid':this.id,'pos':'12'})" />

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<p class="xg1 y">2023-9-23 19:56 上传</p>

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 First configure RCC and adjust it to external crystal oscillator 
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<img style="cursor:pointer;" id="aimg_734839" aid="734839" src="/bbs/static/image/common/none.gif" onclick="zoom(this, this.getAttribute('zoomfile'), 0, 0, '0')" zoomfile="//bbs.eeworld.com.cn/data/attachment/forum/202309/23/195649binyouyctzmuucpc.png" file="//bbs.eeworld.com.cn/data/attachment/forum/202309/23/195649binyouyctzmuucpc.png" inpost="1" onmouseover="showMenu({'ctrlid':this.id,'pos':'12'})" />

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<p class="xg1 y">2023-9-23 19:56 上传</p>

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 Configure Tim2 as PWM output. Here CH3 is selected as the output port, connected to PB10 port 
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 Since the timer is in the original position of 108MHz, ARR is set to 19999, which is 20000, PSC is 99, which is 100, pre-division is 4, automatic pre-reload is turned on, PWM mode is PWM1, Plus is given 0 first, and then adjusted after entering the software. 
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<img style="cursor:pointer;" id="aimg_734837" aid="734837" src="/bbs/static/image/common/none.gif" onclick="zoom(this, this.getAttribute('zoomfile'), 0, 0, '0')" zoomfile="//bbs.eeworld.com.cn/data/attachment/forum/202309/23/195648nrrox9fnmfj5ybnm.png" file="//bbs.eeworld.com.cn/data/attachment/forum/202309/23/195648nrrox9fnmfj5ybnm.png" inpost="1" onmouseover="showMenu({'ctrlid':this.id,'pos':'12'})" />

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<p class="xg1 y">2023-9-23 19:56 上传</p>

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 Open another I2C interface to drive the oled screen. I won’t go into details about the configuration. Just use the default settings. 
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<img style="cursor:pointer;" id="aimg_734835" aid="734835" src="/bbs/static/image/common/none.gif" onclick="zoom(this, this.getAttribute('zoomfile'), 0, 0, '0')" zoomfile="//bbs.eeworld.com.cn/data/attachment/forum/202309/23/195647ejjkqchyfi6djkfh.png" file="//bbs.eeworld.com.cn/data/attachment/forum/202309/23/195647ejjkqchyfi6djkfh.png" inpost="1" onmouseover="showMenu({'ctrlid':this.id,'pos':'12'})" />

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 Open another ADC to collect the value of the knob potentiometer to control the speed of the motor. The above is the configuration in CubeMX, and then generate the code. # Code writing#### I2C code```html #include "i2c.h" I2C_HandleTypeDef hi2c1; /* I2C1 init function */ void MX_I2C1_Init(void) { hi2c1.Instance = I2C1; hi2c1.Init.Timing = 0x20404768; hi2c1.Init.OwnAddress1 = 0; hi2c1.Init.AddressingMode = I2C_ADDRESSINGMODE_7BIT; hi2c1.Init.DualAddressMode = I2C_DUALADDRESS_DISABLE; hi2c1.Init.OwnAddress2 = 0; hi2c1.Init.OwnAddress2Masks = I2C_OA2_NOMASK; hi2c1.Init.GeneralCallMode = I2C_GENERALCALL_DISABLE; hi2c1.Init.NoStretchMode = I2 C_NOSTRETCH_DISABLE; if (HAL_I2C_Init(&hi2c1) != HAL_OK) { Error_Handler(); } /** Configure Analogue filter*/ if (HAL_I2CEx_ConfigAnalogFilter(&hi2c1, I2C_ANALOGFILTER_ENABLE) != HAL_OK) { Error_Handler(); } /** Configure Digital filter*/ if (HAL_I2CEx_ConfigDigitalFilter(&hi2c1, 0) != HAL_OK) { Error_Handler(); } } void HAL_I2C_MspInit(I2C_HandleTypeDef* i2cHandle) { GPIO_InitTypeDef GPIO_InitStruct = {0}; RCC_PeriphCLKInitTypeDef PeriphClkInitStruct = {0}; if(i2cHandle->Instance==I2C1) { /** Initializes the peripherals clock*/ PeriphClkInitStruct.PeriphClockSelection = RCC_PERIPHCLK_I2C1; PeriphClkInitStruct.I2c1ClockSelection = RCC_I2C1CLKSOURCE_PCLK1; if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInitStruct) != HAL_OK) { Error_Handler(); } __HAL_RCC_GPIOB_CLK_ENABLE(); /**I2C1 GPIO Configuration PB8 ------> I2C1_SCL PB9 ------> I2C1_SDA*/ GPIO_InitStruct.Pin = GPIO_PIN_8 |GPIO_PIN_9; GPIO_InitStruct.Mode = GPIO_MODE_AF_OD; GPIO_InitStruct.Pull = GPIO_NOPULL; GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH; GPIO_InitStruct.Alternate = GPIO_AF4_I2C1; HAL_GPIO_Init(GPIOB, &GPIO_InitStruct); /* I2C1 clock enable */ __HAL_RCC_I2C1_CLK_ENABLE(); } } void HAL_I2C_MspDeInit(I2C_HandleTypeDef* i2cHandle) { if(i2cHandle->Instance==I2C1) { /* Peripheral clock disable */ __HAL_RCC_I2C1_CLK_DI SABLE(); /**I2C1 GPIO Configuration PB8 ------> I2C1_SCL PB9 ------> I2C1_SDA*/ HAL_GPIO_DeInit(GPIOB, GPIO_PIN_8); HAL_GPIO_DeInit(GPIOB, GPIO_PIN_9); } } `` #### ADC code``html #include "adc.h" /* USER CODE BEGIN 0 */ #include "stm32f7xx_hal.h"
/* USER CODE END 0 */
ADC_HandleTypeDef hadc1;
/* ADC1 init function */
void MX_ADC1_Init(void)
{
  ADC_ChannelConfTypeDef sConfig = {0};
  /** Configure the global features of the ADC (Clock, Resolution, Data Alignment and number of conversion)*/
  hadc1.Instance = ADC1;
  hadc1.Init.ClockPrescaler = ADC_CLOCK_SYNC_PCLK_DIV4;
  hadc1.Init.Resolution = ADC_RESOLUTION_12B;
  hadc1.Init.ScanConvMode = ADC_SCAN_DISABLE;
  hadc1.Init.ContinuousConvMode = DISABLE;
  hadc1.Init.DiscontinuousConvMode = DISABLE;
  hadc1.Init.ExternalTrigConvEdge = ADC_EXTERNALTRIGCONVEDGE_NONE;
  hadc1.Init.ExternalTrigConv = ADC_SOFTWARE_START;
  hadc1.Init.DataAlign = ADC_DATAALIGN_RIGHT;
  hadc1.Init.NbrOfConversion = 1;
  hadc1.Init.DMAContinuousRequests = DISABLE;
  hadc1.Init.EOCSelection = ADC_EOC_SINGLE_CONV;
  if (HAL_ADC_Init(&hadc1) != HAL_OK)
  {
    Error_Handler();
  }
  /** Configure for the selected ADC regular channel its corresponding rank in the sequencer and its sample time.*/
  sConfig.Channel = ADC_CHANNEL_4;
  sConfig.Rank = ADC_REGULAR_RANK_1;
  sConfig.SamplingTime = ADC_SAMPLETIME_3CYCLES;
  if (HAL_ADC_ConfigChannel(&hadc1, &sConfig) != HAL_OK)
  {
    Error_Handler();
  }
}

void HAL_ADC_MspInit(ADC_HandleTypeDef* adcHandle)
{
  GPIO_InitTypeDef GPIO_InitStruct = {0};
  if(adcHandle->Instance==ADC1)
  {
    /* ADC1 clock enable */
    __HAL_RCC_ADC1_CLK_ENABLE();
    __HAL_RCC_GPIOA_CLK_ENABLE();
    /**ADC1 GPIO Configuration
    PA4     ------> ADC1_IN4*/
    GPIO_InitStruct.Pin = GPIO_PIN_4;
    GPIO_InitStruct.Mode = GPIO_MODE_ANALOG;
    GPIO_InitStruct.Pull = GPIO_NOPULL;
    HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
  }
}

void HAL_ADC_MspDeInit(ADC_HandleTypeDef* adcHandle)
{
  if(adcHandle->Instance==ADC1)
  {
    /* Peripheral clock disable */
    __HAL_RCC_ADC1_CLK_DISABLE();
    /**ADC1 GPIO Configuration
    PA4     ------> ADC1_IN4*/
    HAL_GPIO_DeInit(GPIOA, GPIO_PIN_4);
  }
}
/* USER CODE BEGIN 1 */
uint16_t ADC_Get_Value(void)
{
	uint16_t temp;
	HAL_ADC_Start(&hadc1);
	temp = HAL_ADC_GetValue(&hadc1);
	return temp;
}
/* USER CODE END 1 */
```
####  TIM2代码
```html
#include "tim.h"

/* USER CODE BEGIN 0 */
#include "stm32f7xx_hal.h"
TIM_OC_InitTypeDef sConfigOC = {0};
/* USER CODE END 0 */

TIM_HandleTypeDef htim2;

/* TIM2 init function */
void MX_TIM2_Init(void)
{
  TIM_ClockConfigTypeDef sClockSourceConfig = {0};
  TIM_MasterConfigTypeDef sMasterConfig = {0};
  TIM_OC_InitTypeDef sConfigOC = {0};
  htim2.Instance = TIM2;
  htim2.Init.Prescaler = 99;
  htim2.Init.CounterMode = TIM_COUNTERMODE_UP;
  htim2.Init.Period = 19999;
  htim2.Init.ClockDivision = TIM_CLOCKDIVISION_DIV4;
  htim2.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_ENABLE;
  if (HAL_TIM_Base_Init(&htim2) != HAL_OK)
  {
    Error_Handler();
  }
  sClockSourceConfig.ClockSource = TIM_CLOCKSOURCE_INTERNAL;
  if (HAL_TIM_ConfigClockSource(&htim2, &sClockSourceConfig) != HAL_OK)
  {
    Error_Handler();
  }
  if (HAL_TIM_PWM_Init(&htim2) != HAL_OK)
  {
    Error_Handler();
  }
  sMasterConfig.MasterOutputTrigger = TIM_TRGO_RESET;
  sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE;
  if (HAL_TIMEx_MasterConfigSynchronization(&htim2, &sMasterConfig) != HAL_OK)
  {
    Error_Handler();
  }
  sConfigOC.OCMode = TIM_OCMODE_PWM1;
  sConfigOC.Pulse = 0;
  sConfigOC.OCPolarity = TIM_OCPOLARITY_HIGH;
  sConfigOC.OCFastMode = TIM_OCFAST_ENABLE;
  if (HAL_TIM_PWM_ConfigChannel(&htim2, &sConfigOC, TIM_CHANNEL_3) != HAL_OK)
  {
    Error_Handler();
  }
  /* USER CODE BEGIN TIM2_Init 2 */
  HAL_TIM_GetActiveChannel(&htim2);
  /* USER CODE END TIM2_Init 2 */
  HAL_TIM_MspPostInit(&htim2);
}
void HAL_TIM_Base_MspInit(TIM_HandleTypeDef* tim_baseHandle)
{
  if(tim_baseHandle->Instance==TIM2)
  {
   /* TIM2 clock enable */
   __HAL_RCC_TIM2_CLK_ENABLE();
  }
}
void HAL_TIM_MspPostInit(TIM_HandleTypeDef* timHandle)
{
  GPIO_InitTypeDef GPIO_InitStruct = {0};
  if(timHandle->Instance==TIM2)
  {
    __HAL_RCC_GPIOB_CLK_ENABLE();
    /**TIM2 GPIO Configuration
    PB10     ------> TIM2_CH3*/
    GPIO_InitStruct.Pin = GPIO_PIN_10;
    GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
    GPIO_InitStruct.Pull = GPIO_PULLDOWN;
    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
    GPIO_InitStruct.Alternate = GPIO_AF1_TIM2;
    HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
  }
}
void HAL_TIM_Base_MspDeInit(TIM_HandleTypeDef* tim_baseHandle)
{
  if(tim_baseHandle->Instance==TIM2)
  {
   /* Peripheral clock disable */
   __HAL_RCC_TIM2_CLK_DISABLE();
  }
}
/* USER CODE BEGIN 1 */
void Pwm_Start(void)
{
	HAL_TIM_PWM_Start(&htim2,TIM_CHANNEL_3);
}
void Pwm_Set_CCR(uint16_t ccr)
{
	htim2.Instance->CCR3 = ccr;
}
/* USER CODE END 1 */
```
####  Main.c代码
```html
#include "main.h"
#include "adc.h"
#include "i2c.h"
#include "tim.h"
#include "gpio.h"
/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
#include "stm32f7xx_hal_adc.h"
#include "OLED.h"
/* USER CODE END Includes */

/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);

/* Private user code ---------------------------------------------------------*/

int main(void)
{
  /* Reset of all peripherals, Initializes the Flash interface and the Systick.*/
  HAL_Init();

/* Configure the system clock */
  SystemClock_Config();

/* USER CODE BEGIN SysInit */
	uint16_t speed;
	uint16_t value;
  /* USER CODE END SysInit */

/* Initialize all configured peripherals */
  MX_GPIO_Init();
  MX_TIM2_Init();
  MX_ADC1_Init();
  MX_I2C1_Init();
  /* USER CODE BEGIN 2 */
	OLED_Init();
	HAL_ADC_MspInit(&hadc1);
	MX_ADC1_Init();
	Pwm_Start();
	Pwm_Set_CCR(3000);
	OLED_Clear();
  /* USER CODE END 2 */

/* Infinite loop */
  /* USER CODE BEGIN WHILE */
  while (1)
  {
	value = ADC_Get_Value();
	OLED_ShowNum(1,1,value,5);
	speed = (uint16_t)((float)value / 4096 * 800);
	Pwm_Set_CCR(speed+1000);
    /* USER CODE END WHILE */
  }
}
```
# 效果展示
<div id="player_578a31d928a6afcaa5a630b9f3ebd94c0" class="localvideo-box"></div><div class="localvideo-title">f4111f906e5820c88ed9f28e06cc100c</div><br/></div><script>					var loginstr = '<div class="locked">To view all the contents of the post, please <a href="/bbs/member.php?mod=logging&action=login"   style="color:#e60000" class="loginf">log in</a> or <a href="/bbs/member.php?mod=register_eeworld.php&action=wechat" style="color:#e60000" target="_blank">register</a></div>';
					
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I learned a lot, thanks for sharing~~~ Details Published on 2023-9-25 18:50

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Published on 2023-9-24 20:40 来自手机 Only look at the author

Very good, learned a lot, thanks for sharing~~~

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