编写基于freertos的stm32f103c8t6和l298n模块和编码器电机的代码,详细阐述接线与接口
时间: 2024-06-08 08:07:57 浏览: 144
带bluepill的FreeRTOS(stm32f103c8t6)_C_Assembly_源码_下载.zip
下面是基于FreeRTOS的STM32F103C8T6和L298N模块以及编码器电机的代码,同时也会详细阐述接线和接口。
首先,我们需要了解一下L298N模块和编码器电机的接口和接线方式。
L298N模块的接线方式如下:
1. 将电源正极连接到VCC,负极连接到GND。
2. 将两个直流电机的正极分别连接到OUT1和OUT2,负极分别连接到OUT3和OUT4。
3. 连接控制信号,将控制信号IN1和IN2连接到STM32F103C8T6的PB0和PB1口,IN3和IN4连接到PB10和PB11口。
编码器电机的接线方式如下:
1. 将编码器的VCC和GND分别连接到STM32F103C8T6的5V和GND口。
2. 将编码器的A相和B相分别连接到STM32F103C8T6的PA6和PA7口。
在接线完成后,我们需要编写代码进行控制。以下是基于FreeRTOS的STM32F103C8T6和L298N模块以及编码器电机的代码:
```
#include "main.h"
#include "FreeRTOS.h"
#include "task.h"
TIM_HandleTypeDef htim2;
void SystemClock_Config(void);
static void MX_GPIO_Init(void);
static void MX_TIM2_Init(void);
TaskHandle_t MotorTaskHandle;
int main(void)
{
HAL_Init();
SystemClock_Config();
MX_GPIO_Init();
MX_TIM2_Init();
xTaskCreate(MotorTask, "MotorTask", configMINIMAL_STACK_SIZE, NULL, 1, &MotorTaskHandle);
vTaskStartScheduler();
while (1)
{
}
}
void MotorTask(void *pvParameters)
{
uint8_t motor_speed = 100;
uint8_t motor_direction = 1;
uint32_t encoder_count = 0;
uint32_t previous_encoder_count = 0;
while (1)
{
if (motor_direction == 1)
{
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_0, GPIO_PIN_SET);
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_1, GPIO_PIN_RESET);
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_10, GPIO_PIN_SET);
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_11, GPIO_PIN_RESET);
}
else
{
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_0, GPIO_PIN_RESET);
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_1, GPIO_PIN_SET);
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_10, GPIO_PIN_RESET);
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_11, GPIO_PIN_SET);
}
__HAL_TIM_SET_COMPARE(&htim2, TIM_CHANNEL_1, motor_speed);
__HAL_TIM_SET_COMPARE(&htim2, TIM_CHANNEL_2, motor_speed);
encoder_count = __HAL_TIM_GET_COUNTER(&htim2);
if (encoder_count != previous_encoder_count)
{
// Motor has moved
// Do something with encoder count
}
previous_encoder_count = encoder_count;
vTaskDelay(100 / portTICK_PERIOD_MS);
}
}
void SystemClock_Config(void)
{
RCC_OscInitTypeDef RCC_OscInitStruct = {0};
RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
/** Initializes the RCC Oscillators according to the specified parameters
* in the RCC_OscInitTypeDef structure.
*/
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
RCC_OscInitStruct.HSEState = RCC_HSE_ON;
RCC_OscInitStruct.HSEPredivValue = RCC_HSE_PREDIV_DIV1;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL9;
if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
{
Error_Handler();
}
/** Initializes the CPU, AHB and APB buses 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_DIV2;
RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2) != HAL_OK)
{
Error_Handler();
}
}
static void MX_TIM2_Init(void)
{
TIM_ClockConfigTypeDef sClockSourceConfig = {0};
TIM_MasterConfigTypeDef sMasterConfig = {0};
TIM_OC_InitTypeDef sConfigOC = {0};
TIM_Encoder_InitTypeDef sConfigEncoder = {0};
htim2.Instance = TIM2;
htim2.Init.Prescaler = 0;
htim2.Init.CounterMode = TIM_COUNTERMODE_UP;
htim2.Init.Period = 65535;
htim2.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
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_Encoder_Init(&htim2, &sConfigEncoder) != 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_1) != HAL_OK)
{
Error_Handler();
}
if (HAL_TIM_PWM_ConfigChannel(&htim2, &sConfigOC, TIM_CHANNEL_2) != HAL_OK)
{
Error_Handler();
}
HAL_TIM_MspPostInit(&htim2);
HAL_TIM_Encoder_Start(&htim2, TIM_CHANNEL_ALL);
}
static void MX_GPIO_Init(void)
{
GPIO_InitTypeDef GPIO_InitStruct = {0};
/* GPIO Ports Clock Enable */
__HAL_RCC_GPIOC_CLK_ENABLE();
__HAL_RCC_GPIOA_CLK_ENABLE();
__HAL_RCC_GPIOB_CLK_ENABLE();
/*Configure GPIO pin Output Level */
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_0|GPIO_PIN_1|GPIO_PIN_10|GPIO_PIN_11, GPIO_PIN_RESET);
/*Configure GPIO pins : PB0 PB1 PB10 PB11 */
GPIO_InitStruct.Pin = GPIO_PIN_0|GPIO_PIN_1|GPIO_PIN_10|GPIO_PIN_11;
GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
/*Configure GPIO pin : PA6 */
GPIO_InitStruct.Pin = GPIO_PIN_6;
GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
GPIO_InitStruct.Pull = GPIO_NOPULL;
HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
/*Configure GPIO pin : PA7 */
GPIO_InitStruct.Pin = GPIO_PIN_7;
GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
GPIO_InitStruct.Pull = GPIO_NOPULL;
HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
}
void Error_Handler(void)
{
__disable_irq();
while (1)
{
}
}
```
在这个例子中,我们使用了一个任务来控制电机的转动。任务中包含了一些变量,包括电机速度、电机方向、编码器计数器等。任务中的代码会不断检测电机方向和速度,控制电机的转动。同时,也会检测编码器的计数器,以便更好地了解电机的状态。
在这个例子中,我们使用了FreeRTOS的函数xTaskCreate()来创建任务,并使用vTaskStartScheduler()启动调度器。
希望这个例子能够对您有所帮助,并且能够理解L298N模块和编码器电机的接口和接线方式。
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