蓝桥杯嵌入式——第十一届蓝桥杯嵌入式国赛
之前准备省赛的时候用的是旧版的STM32F103，从准备国赛开始就用新版STM32G431平台了，主要是想经过新版的准备学习一下HAL库以及CubeMX的使用。用了几天的新版，感觉新版的还是比较香，单纯从配置各个模块来说，比旧版的省太多时间了，而且速度也比较块，单纯从比赛来说，还是推荐新版，因为配置方便，调试器兼容KEIL5，KEI5比KEIL4好用太多了，也有自动补全，在写代码的时候速度也会比较快一些。不过旧版的资料确实比较多，选择也看大家。所以之后的国赛赛题都是用的新版，当前除了模块的配置外，其他的代码其实都是一样的，没多大区别，所以旧版也是可以参考我的代码。
一、赛题
怎么说呢，其实国赛的难度也不是很大，只是多用到了几个模块而已，十一届的国赛难度就和省赛的差不多，可能还没有前面某几届的省赛的难度高。
这一届的赛题主要考察了ADC、定时器的输入捕获、PWM的输出。 建议一定要掌握定时器的输出翻转模式，学会使用输出翻转模式输出频率和占空比都可变得PWM波， 比赛中都可以用这种方法搞定所有的PWM的考点。
二、CubeMX模块配置
-
ADC的配置
-
输入捕获的配置
3.PWM配置
三、主程序代码
/* USER CODE BEGIN Header */
/**
******************************************************************************
* @file : main.c
* @brief : Main program body
******************************************************************************
* @attention
*
* <h2><center>© Copyright (c) 2021 STMicroelectronics.
* All rights reserved.</center></h2>
*
* This software component is licensed by ST under BSD 3-Clause license,
* the "License"; You may not use this file except in compliance with the
* License. You may obtain a copy of the License at:
* opensource.org/licenses/BSD-3-Clause
*
******************************************************************************
*/
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "main.h"
/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
/* USER CODE END Includes */
/* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN PTD */
/* USER CODE END PTD */
/* Private define ------------------------------------------------------------*/
/* USER CODE BEGIN PD */
#define DATA 0
#define SETTING 1
/* USER CODE END PD */
/* Private macro -------------------------------------------------------------*/
/* USER CODE BEGIN PM */
/* USER CODE END PM */
/* Private variables ---------------------------------------------------------*/
ADC_HandleTypeDef hadc2;
DMA_HandleTypeDef hdma_adc2;
TIM_HandleTypeDef htim2;
TIM_HandleTypeDef htim3;
TIM_HandleTypeDef htim4;
/* USER CODE BEGIN PV */
uint16_t adc_value[2];
uint8_t key_tick = 0;
_Bool interface = DATA;
float v1 = 0.1;
float v2 = 0.2;
uint16_t f1 = 2030;
uint16_t f2 = 300;
uint8_t vd = 0;
uint8_t fd = 1;
uint8_t vd_temp = 1;
uint8_t fd_temp = 2;
uint8_t lcd_str[20];
_Bool select = 0;
__IO uint16_t TIM2_IC3_ReadValue1 = 0, TIM2_IC3_ReadValue2 = 0;
__IO uint16_t TIM2_IC3_CaptureNumber = 0;
__IO uint32_t TIM2_IC3_Capture = 0;
__IO uint32_t TIM2_IC3_Freq = 0;
__IO uint16_t TIM2_IC2_ReadValue1 = 0, TIM2_IC2_ReadValue2 = 0;
__IO uint16_t TIM2_IC2_CaptureNumber = 0;
__IO uint32_t TIM2_IC2_Capture = 0;
__IO uint32_t TIM2_IC2_Freq = 0;
uint16_t CCR3_Val = 1000000 / 3000;
uint16_t pwm_refresh_tick = 0;
_Bool pwm_refresh_flag = 0;
/* USER CODE END PV */
/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
static void MX_GPIO_Init(void);
static void MX_DMA_Init(void);
static void MX_TIM4_Init(void);
static void MX_ADC2_Init(void);
static void MX_TIM2_Init(void);
static void MX_TIM3_Init(void);
/* USER CODE BEGIN PFP */
void led_proc(void);
void lcd_proc(void);
void key_scan(void);
void adc_proc(void);
void pwm_proc(void);
/* USER CODE END PFP */
/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */
/* USER CODE END 0 */
/**
* @brief The application entry point.
* @retval int
*/
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();
MX_DMA_Init();
MX_TIM4_Init();
MX_ADC2_Init();
MX_TIM2_Init();
MX_TIM3_Init();
/* USER CODE BEGIN 2 */
HAL_TIM_Base_Start_IT(&htim4);
HAL_TIM_IC_Start_IT(&htim2,TIM_CHANNEL_2);
HAL_TIM_IC_Start_IT(&htim2,TIM_CHANNEL_3);
HAL_TIM_OC_Start_IT(&htim3,TIM_CHANNEL_2);
HAL_ADCEx_Calibration_Start(&hadc2,ADC_SINGLE_ENDED);
HAL_ADC_Start_DMA(&hadc2,(uint32_t*)adc_value,2);
led_init();
LCD_Init();
/* USER CODE END 2 */
/* Infinite loop */
/* USER CODE BEGIN WHILE */
LCD_Clear(Black);
LCD_SetBackColor(Black);
LCD_SetTextColor(White);
LCD_DisplayStringLine(Line0, (uint8_t *)" ");
while (1)
{
/* USER CODE END WHILE */
/* USER CODE BEGIN 3 */
led_proc();
lcd_proc();
adc_proc();
pwm_proc();
}
/* USER CODE END 3 */
}
/**
* @brief System Clock Configuration
* @retval None
*/
void SystemClock_Config(void)
{
RCC_OscInitTypeDef RCC_OscInitStruct = {
0};
RCC_ClkInitTypeDef RCC_ClkInitStruct = {
0};
RCC_PeriphCLKInitTypeDef PeriphClkInit = {
0};
/** Configure the main internal regulator output voltage
*/
HAL_PWREx_ControlVoltageScaling(PWR_REGULATOR_VOLTAGE_SCALE1);
/** Initializes the CPU, AHB and APB busses clocks
*/
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
RCC_OscInitStruct.HSEState = RCC_HSE_ON;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
RCC_OscInitStruct.PLL.PLLM = RCC_PLLM_DIV3;
RCC_OscInitStruct.PLL.PLLN = 20;
RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
RCC_OscInitStruct.PLL.PLLQ = RCC_PLLQ_DIV2;
RCC_OscInitStruct.PLL.PLLR = RCC_PLLR_DIV2;
if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
{
Error_Handler();
}
/** Initializes the CPU, AHB and APB busses clocks
*/
RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
|RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_3) != HAL_OK)
{
Error_Handler();
}
/** Initializes the peripherals clocks
*/
PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_ADC12;
PeriphClkInit.Adc12ClockSelection = RCC_ADC12CLKSOURCE_SYSCLK;
if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit) != HAL_OK)
{
Error_Handler();
}
}
/**
* @brief ADC2 Initialization Function
* @param None
* @retval None
*/
static void MX_ADC2_Init(void)
{
/* USER CODE BEGIN ADC2_Init 0 */
/* USER CODE END ADC2_Init 0 */
ADC_ChannelConfTypeDef sConfig = {
0};
/* USER CODE BEGIN ADC2_Init 1 */
/* USER CODE END ADC2_Init 1 */
/** Common config
*/
hadc2.Instance = ADC2;
hadc2.Init.ClockPrescaler = ADC_CLOCK_ASYNC_DIV1;
hadc2.Init.Resolution = ADC_RESOLUTION_12B;
hadc2.Init.DataAlign = ADC_DATAALIGN_RIGHT;
hadc2.Init.GainCompensation = 0;
hadc2.Init.ScanConvMode = ADC_SCAN_ENABLE;
hadc2.Init.EOCSelection = ADC_EOC_SINGLE_CONV;
hadc2.Init.LowPowerAutoWait = DISABLE;
hadc2.Init.ContinuousConvMode = ENABLE;
hadc2.Init.NbrOfConversion = 2;
hadc2.Init.DiscontinuousConvMode = DISABLE;
hadc2.Init.ExternalTrigConv = ADC_SOFTWARE_START;
hadc2.Init.ExternalTrigConvEdge = ADC_EXTERNALTRIGCONVEDGE_NONE;
hadc2.Init.DMAContinuousRequests = ENABLE;
hadc2.Init.Overrun = ADC_OVR_DATA_PRESERVED;
hadc2.Init.OversamplingMode = DISABLE;
if (HAL_ADC_Init(&hadc2) != HAL_OK)
{
Error_Handler();
}
/** Configure Regular Channel
*/
sConfig.Channel = ADC_CHANNEL_17;
sConfig.Rank = ADC_REGULAR_RANK_1;
sConfig.SamplingTime = ADC_SAMPLETIME_2CYCLES_5;
sConfig.SingleDiff = ADC_SINGLE_ENDED;
sConfig.OffsetNumber = ADC_OFFSET_NONE;
sConfig.Offset = 0;
if (HAL_ADC_ConfigChannel(&hadc2, &sConfig) != HAL_OK)
{
Error_Handler();
}
/** Configure Regular Channel
*/
sConfig.Channel = ADC_CHANNEL_13;
sConfig.Rank = ADC_REGULAR_RANK_2;
if (HAL_ADC_ConfigChannel(&hadc2, &sConfig) != HAL_OK)
{
Error_Handler();
}
/* USER CODE BEGIN ADC2_Init 2 */
/* USER CODE END ADC2_Init 2 */
}
/**
* @brief TIM2 Initialization Function
* @param None
* @retval None
*/
static void MX_TIM2_Init(void)
{
/* USER CODE BEGIN TIM2_Init 0 */
/* USER CODE END TIM2_Init 0 */
TIM_ClockConfigTypeDef sClockSourceConfig = {
0};
TIM_MasterConfigTypeDef sMasterConfig = {
0};
TIM_IC_InitTypeDef sConfigIC = {
0};
/* USER CODE BEGIN TIM2_Init 1 */
/* USER CODE END TIM2_Init 1 */
htim2.Instance = TIM2;
htim2.Init.Prescaler = 80 - 1;
htim2.Init.CounterMode = TIM_COUNTERMODE_UP;
htim2.Init.Period = 4.294967295E9;
htim2.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
htim2.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_DISABLE;
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_IC_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();
}
sConfigIC.ICPolarity = TIM_INPUTCHANNELPOLARITY_RISING;
sConfigIC.ICSelection = TIM_ICSELECTION_DIRECTTI;
sConfigIC.ICPrescaler = TIM_ICPSC_DIV1;
sConfigIC.ICFilter = 0;
if (HAL_TIM_IC_ConfigChannel(&htim2, &sConfigIC, TIM_CHANNEL_2) != HAL_OK)
{
Error_Handler();
}
if (HAL_TIM_IC_ConfigChannel(&htim2, &sConfigIC, TIM_CHANNEL_3) != HAL_OK)
{
Error_Handler();
}
/* USER CODE BEGIN TIM2_Init 2 */
/* USER CODE END TIM2_Init 2 */
}
/**
* @brief TIM3 Initialization Function
* @param None
* @retval None
*/
static void MX_TIM3_Init(void)
{
/* USER CODE BEGIN TIM3_Init 0 */
/* USER CODE END TIM3_Init 0 */
TIM_ClockConfigTypeDef sClockSourceConfig = {
0};
TIM_MasterConfigTypeDef sMasterConfig = {
0};
TIM_OC_InitTypeDef sConfigOC = {
0};
/* USER CODE BEGIN TIM3_Init 1 */
/* USER CODE END TIM3_Init 1 */
htim3.Instance = TIM3;
htim3.Init.Prescaler = 80 - 1;
htim3.Init.CounterMode = TIM_COUNTERMODE_UP;
htim3.Init.Period = 65535;
htim3.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
htim3.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_ENABLE;
if (HAL_TIM_Base_Init(&htim3) != HAL_OK)
{
Error_Handler();
}
sClockSourceConfig.ClockSource = TIM_CLOCKSOURCE_INTERNAL;
if (HAL_TIM_ConfigClockSource(&htim3, &sClockSourceConfig) != HAL_OK)
{
Error_Handler();
}
if (HAL_TIM_OC_Init(&htim3) != HAL_OK)
{
Error_Handler();
}
sMasterConfig.MasterOutputTrigger = TIM_TRGO_RESET;
sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE;
if (HAL_TIMEx_MasterConfigSynchronization(&htim3, &sMasterConfig) != HAL_OK)
{
Error_Handler();
}
sConfigOC.OCMode = TIM_OCMODE_TOGGLE;
sConfigOC.Pulse = 500;
sConfigOC.OCPolarity = TIM_OCPOLARITY_HIGH;
sConfigOC.OCFastMode = TIM_OCFAST_DISABLE;
if (HAL_TIM_OC_ConfigChannel(&htim3, &sConfigOC, TIM_CHANNEL_2) != HAL_OK)
{
Error_Handler();
}
/* USER CODE BEGIN TIM3_Init 2 */
/* USER CODE END TIM3_Init 2 */
HAL_TIM_MspPostInit(&htim3);
}
/**
* @brief TIM4 Initialization Function
* @param None
* @retval None
*/
static void MX_TIM4_Init(void)
{
/* USER CODE BEGIN TIM4_Init 0 */
/* USER CODE END TIM4_Init 0 */
TIM_ClockConfigTypeDef sClockSourceConfig = {
0};
TIM_MasterConfigTypeDef sMasterConfig = {
0};
/* USER CODE BEGIN TIM4_Init 1 */
/* USER CODE END TIM4_Init 1 */
htim4.Instance = TIM4;
htim4.Init.Prescaler = 80 - 1;
htim4.Init.CounterMode = TIM_COUNTERMODE_UP;
htim4.Init.Period = 999;
htim4.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
htim4.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_DISABLE;
if (HAL_TIM_Base_Init(&htim4) != HAL_OK)
{
Error_Handler();
}
sClockSourceConfig.ClockSource = TIM_CLOCKSOURCE_INTERNAL;
if (HAL_TIM_ConfigClockSource(&htim4, &sClockSourceConfig) != HAL_OK)
{
Error_Handler();
}
sMasterConfig.MasterOutputTrigger = TIM_TRGO_RESET;
sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE;
if (HAL_TIMEx_MasterConfigSynchronization(&htim4, &sMasterConfig) != HAL_OK)
{
Error_Handler();
}
/* USER CODE BEGIN TIM4_Init 2 */
/* USER CODE END TIM4_Init 2 */
}
/**
* Enable DMA controller clock
*/
static void MX_DMA_Init(void)
{
/* DMA controller clock enable */
__HAL_RCC_DMAMUX1_CLK_ENABLE();
__HAL_RCC_DMA1_CLK_ENABLE();
}
/**
* @brief GPIO Initialization Function
* @param None
* @retval None
*/
static void MX_GPIO_Init(void)
{
GPIO_InitTypeDef GPIO_InitStruct = {
0};
/* GPIO Ports Clock Enable */
__HAL_RCC_GPIOC_CLK_ENABLE();
__HAL_RCC_GPIOF_CLK_ENABLE();
__HAL_RCC_GPIOA_CLK_ENABLE();
__HAL_RCC_GPIOB_CLK_ENABLE();
__HAL_RCC_GPIOD_CLK_ENABLE();
/*Configure GPIO pin Output Level */
HAL_GPIO_WritePin(GPIOC, GPIO_PIN_13|GPIO_PIN_14|GPIO_PIN_15|GPIO_PIN_0
|GPIO_PIN_1|GPIO_PIN_2|GPIO_PIN_3|GPIO_PIN_4
|GPIO_PIN_5|GPIO_PIN_6|GPIO_PIN_7|GPIO_PIN_8
|GPIO_PIN_9|GPIO_PIN_10|GPIO_PIN_11|GPIO_PIN_12, GPIO_PIN_RESET);
/*Configure GPIO pin Output Level */
HAL_GPIO_WritePin(GPIOA, GPIO_PIN_8, GPIO_PIN_RESET);
/*Configure GPIO pin Output Level */
HAL_GPIO_WritePin(GPIOD, GPIO_PIN_2, GPIO_PIN_RESET);
/*Configure GPIO pin Output Level */
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_5|GPIO_PIN_8|GPIO_PIN_9, GPIO_PIN_RESET);
/*Configure GPIO pins : PC13 PC14 PC15 PC0
PC1 PC2 PC3 PC4
PC5 PC6 PC7 PC8
PC9 PC10 PC11 PC12 */
GPIO_InitStruct.Pin = GPIO_PIN_13|GPIO_PIN_14|GPIO_PIN_15|GPIO_PIN_0
|GPIO_PIN_1|GPIO_PIN_2|GPIO_PIN_3|GPIO_PIN_4
|GPIO_PIN_5|GPIO_PIN_6|GPIO_PIN_7|GPIO_PIN_8
|GPIO_PIN_9|GPIO_PIN_10|GPIO_PIN_11|GPIO_PIN_12;
GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
HAL_GPIO_Init(GPIOC, &GPIO_InitStruct);
/*Configure GPIO pin : PA0 */
GPIO_InitStruct.Pin = GPIO_PIN_0;
GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
GPIO_InitStruct.Pull = GPIO_NOPULL;
HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
/*Configure GPIO pins : PB0 PB1 PB2 */
GPIO_InitStruct.Pin = GPIO_PIN_0|GPIO_PIN_1|GPIO_PIN_2;
GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
GPIO_InitStruct.Pull = GPIO_NOPULL;
HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
/*Configure GPIO pin : PA8 */
GPIO_InitStruct.Pin = GPIO_PIN_8;
GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
/*Configure GPIO pin : PD2 */
GPIO_InitStruct.Pin = GPIO_PIN_2;
GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
HAL_GPIO_Init(GPIOD, &GPIO_InitStruct);
/*Configure GPIO pins : PB5 PB8 PB9 */
GPIO_InitStruct.Pin = GPIO_PIN_5|GPIO_PIN_8|GPIO_PIN_9;
GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
}
/* USER CODE BEGIN 4 */
void led_proc(void)
{
if(interface == DATA)
{
if(v1 > v2)
led_ctrl(0x0100 << vd,1);
else
led_ctrl(0x0100 << vd,0);
if(f1 > f2)
led_ctrl(0x0100 << fd,1);
else
led_ctrl(0x0100 << fd,0);
}
}
void lcd_proc(void)
{
if(interface == DATA)
{
memset(lcd_str,0,sizeof(lcd_str));
snprintf((char*)lcd_str,20," DATA ");
LCD_DisplayStringLine(Line1,lcd_str);
memset(lcd_str,0,sizeof(lcd_str));
snprintf((char*)lcd_str,20," V1:%.1f ",v1);
LCD_DisplayStringLine(Line3,lcd_str);
memset(lcd_str,0,sizeof(lcd_str));
snprintf((char*)lcd_str,20," V2:%.1f ",v2);
LCD_DisplayStringLine(Line4,lcd_str);
memset(lcd_str,0,sizeof(lcd_str));
snprintf((char*)lcd_str,20," F1:%dHz ",f1);
LCD_DisplayStringLine(Line5,lcd_str);
memset(lcd_str,0,sizeof(lcd_str));
snprintf((char*)lcd_str,20," F2:%dHz ",f2);
LCD_DisplayStringLine(Line6,lcd_str);
}
else
{
memset(lcd_str,0,sizeof(lcd_str));
snprintf((char*)lcd_str,20," PARA ");
LCD_DisplayStringLine(Line1,lcd_str);
memset(lcd_str,0,sizeof(lcd_str));
snprintf((char*)lcd_str,20," VD:LD%d ",vd_temp + 1);
LCD_DisplayStringLine(Line3,lcd_str);
memset(lcd_str,0,sizeof(lcd_str));
snprintf((char*)lcd_str,20," FD:LD%d ",fd_temp + 1);
LCD_DisplayStringLine(Line4,lcd_str);
LCD_DisplayStringLine(Line5,(uint8_t *)" ");
LCD_DisplayStringLine(Line6,(uint8_t *)" ");
}
}
void adc_proc(void)
{
v1 = adc_value[0] / 4095.0 * 3.3;
v2 = adc_value[1] / 4095.0 * 3.3;
// Á¬Ðøת»»ÐèÒªÅäÖÃcontinuousΪenable
// endofsingleºÍendofsequence¶¼¿ÉÒÔ
//HAL_ADC_Start_DMA(&hadc2,(uint32_t*)adc_value,2);
}
void pwm_proc(void)
{
if(pwm_refresh_flag)
{
pwm_refresh_flag = 0;
if(select == 0)
{
CCR3_Val = 1000000 / f1 / 2;
}
else
{
CCR3_Val = 1000000 / f2 / 2;
}
}
}
void key_scan(void)
{
key_refresh();
if(key_falling == B1)
{
led_init();
if(interface == DATA)
{
interface = SETTING;
select = 0;
}
else
{
interface = DATA;
vd = vd_temp;
fd = fd_temp;
}
}
else if(key_falling == B2 && interface == SETTING)
{
vd_temp = (vd_temp + 1) % 8;
if(vd_temp == fd_temp)
vd_temp = (vd_temp + 1) % 8;
}
else if(key_falling == B3 && interface == SETTING)
{
fd_temp = (fd_temp + 1) % 8;
if(fd_temp == vd_temp)
fd_temp = (fd_temp + 1) % 8;
}
else if(key_falling == B4)
{
select = !select;
}
}
void HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef *htim)
{
if(htim->Instance == TIM4)
{
if(++key_tick == 10)
{
key_tick = 0;
key_scan();
}
if(++pwm_refresh_tick == 500)
{
pwm_refresh_tick = 0;
pwm_refresh_flag = 1;
f1 = TIM2_IC2_Freq;
f2 = TIM2_IC3_Freq;
}
}
}
void HAL_TIM_IC_CaptureCallback(TIM_HandleTypeDef *htim)
{
if(htim->Instance == TIM2)
{
if(htim->Channel == HAL_TIM_ACTIVE_CHANNEL_2)
{
if(TIM2_IC2_CaptureNumber == 0)
{
/* Get the Input Capture value */
TIM2_IC2_ReadValue1 = TIM2->CCR2;
TIM2_IC2_CaptureNumber = 1;
}
else if(TIM2_IC2_CaptureNumber == 1)
{
/* Get the Input Capture value */
TIM2_IC2_ReadValue2 = TIM2->CCR2;
/* Capture computation */
if (TIM2_IC2_ReadValue2 > TIM2_IC2_ReadValue1)
{
TIM2_IC2_Capture = (TIM2_IC2_ReadValue2 - TIM2_IC2_ReadValue1);
}
else
{
TIM2_IC2_Capture = ((0xFFFFFFFF - TIM2_IC2_ReadValue1) + TIM2_IC2_ReadValue2);
}
/* Frequency computation */
TIM2_IC2_Freq = (uint32_t) 1000000 / TIM2_IC2_Capture;
TIM2_IC2_CaptureNumber = 0;
}
}
if(htim->Channel == HAL_TIM_ACTIVE_CHANNEL_3)
{
if(TIM2_IC3_CaptureNumber == 0)
{
/* Get the Input Capture value */
TIM2_IC3_ReadValue1 = TIM2->CCR3;
TIM2_IC3_CaptureNumber = 1;
}
else if(TIM2_IC3_CaptureNumber == 1)
{
/* Get the Input Capture value */
TIM2_IC3_ReadValue2 = TIM2->CCR3;
/* Capture computation */
if (TIM2_IC3_ReadValue2 > TIM2_IC3_ReadValue1)
{
TIM2_IC3_Capture = (TIM2_IC3_ReadValue2 - TIM2_IC3_ReadValue1);
}
else
{
TIM2_IC3_Capture = ((0xFFFFFFFF - TIM2_IC3_ReadValue1) + TIM2_IC3_ReadValue2);
}
/* Frequency computation */
TIM2_IC3_Freq = (uint32_t) 1000000 / TIM2_IC3_Capture;
TIM2_IC3_CaptureNumber = 0;
}
}
}
}
void HAL_TIM_OC_DelayElapsedCallback(TIM_HandleTypeDef *htim)
{
uint16_t capture = 0;
if(htim->Instance == TIM3)
{
if(htim->Channel == HAL_TIM_ACTIVE_CHANNEL_2)
{
capture = TIM3->CCR2;
TIM3->CCR2 = capture + CCR3_Val;
}
}
}
/* USER CODE END 4 */
/**
* @brief This function is executed in case of error occurrence.
* @retval None
*/
void Error_Handler(void)
{
/* USER CODE BEGIN Error_Handler_Debug */
/* User can add his own implementation to report the HAL error return state */
/* USER CODE END Error_Handler_Debug */
}
#ifdef USE_FULL_ASSERT
/**
* @brief Reports the name of the source file and the source line number
* where the assert_param error has occurred.
* @param file: pointer to the source file name
* @param line: assert_param error line source number
* @retval None
*/
void assert_failed(uint8_t *file, uint32_t line)
{
/* USER CODE BEGIN 6 */
/* User can add his own implementation to report the file name and line number,
tex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
/* USER CODE END 6 */
}
#endif /* USE_FULL_ASSERT */
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
四、细节说明
这一届的赛题很有可能会忽略一个小问题导致出现一个小bug，就是LED。题目要求只有相应的两个LED点亮，其他的LED都处于熄灭的状态，所以我们每一次进入LED设置界面的时候，就应该将所有的LED先关闭，避免设置完成了，上一次设置的LED灯还是亮着的情况。
五、完整代码下载
转载：https://blog.csdn.net/qq_43715171/article/details/117024045
查看评论