《步进电机》 rust 嵌入式esp23

步进电机是生活中隐形的精密操控者，通过脉冲信号精准控制转动角度，为诸多设备提供核心动力。在数码设备中，佳能相机的 STM 步进电机实现安静平滑的自动对焦，让短片拍摄无干扰；扫描仪依靠它驱动扫描头准确定位，保障图像清晰。智能家居里，28BYJ-48 步进电机推动智能窗帘远程开合，实现毫米级调节。医疗领域更离不开其精准性，输液泵和注射泵通过它控制液体传输速率，确保用药安全。就连微波炉转盘也依赖永磁式步进电机维持稳定转动。从日常家电到精密仪器，步进电机以低成本实现高可靠性，成为自动化生活的隐形基石。

在上一篇 rust 嵌入式esp23 《hello word》的的基础上

实现功能

1. 控制步进电机旋转

熟悉硬件：

步进电机控制板
作用是将esp32电信号转换成电压

步进电机
实现转动效果

接线

1. 将步进电机插入电机控制板
2. 控制板IN1~4接口分别接esp32的G16~19引脚。
3. 电机的-/+分别接电源正极和负极

代码实现

声明四个输出引脚

    let stepper_orange = Output::new(peripherals.GPIO16, Level::High, OutputConfig::default());
    let stepper_yellow = Output::new(peripherals.GPIO17, Level::High, OutputConfig::default());
    let stepper_pink = Output::new(peripherals.GPIO18, Level::High, OutputConfig::default());
    let stepper_blue = Output::new(peripherals.GPIO19, Level::High, OutputConfig::default());

实现轮流电压输出

let delay = Delay::new();
    let mut stepper_arr = [stepper_orange, stepper_yellow, stepper_pink, stepper_blue];
    loop {
        for i in 0..stepper_arr.len() {
            for j in 0..stepper_arr.len() {
                if i == j {
                    continue;
                }
                stepper_arr[j].set_high();
            }
            stepper_arr[i].set_low();
            delay.delay_millis(5);
        }
    }

完整代码

#![no_std]
#![no_main]
#![deny(
    clippy::mem_forget,
    reason = "mem::forget is generally not safe to do with esp_hal types, especially those \
    holding buffers for the duration of a data transfer."
)]

use esp_hal::{
    clock::CpuClock,
    delay::Delay,
    gpio::{Level, Output, OutputConfig},
    main,
};
use esp_println::println;

#[panic_handler]
fn panic(_: &core::panic::PanicInfo) -> ! {
    loop {
        println!("Panic!");
    }
}

pub fn update_method(timestamp: u32) {
    println!("update_method: {}", timestamp);
}
esp_bootloader_esp_idf::esp_app_desc!();
#[main]
fn main() -> ! {
    // generator version: 0.5.0
    let config = esp_hal::Config::default().with_cpu_clock(CpuClock::max());
    let peripherals = esp_hal::init(config);
    let stepper_orange = Output::new(peripherals.GPIO16, Level::High, OutputConfig::default());
    let stepper_yellow = Output::new(peripherals.GPIO17, Level::High, OutputConfig::default());
    let stepper_pink = Output::new(peripherals.GPIO18, Level::High, OutputConfig::default());
    let stepper_blue = Output::new(peripherals.GPIO19, Level::High, OutputConfig::default());
    let delay = Delay::new();
    let mut stepper_arr = [stepper_orange, stepper_yellow, stepper_pink, stepper_blue];
    loop {
        for i in 0..stepper_arr.len() {
            for j in 0..stepper_arr.len() {
                if i == j {
                    continue;
                }
                stepper_arr[j].set_high();
            }
            stepper_arr[i].set_low();
            delay.delay_millis(5);
        }
    }
}

效果展示