【单片机】ESP32-S3+多TMC2209控制步进电机系列3 使用TMC2209库实现UART通讯

1.下载TMC2209.h库

在Arudino环境中，有两个不错的库可以驱动TMC2209。

TMC2209库
TMCStepper库
TMC2209库只针对TMC2209驱动器，而TMCStepper库除了能够支持TMC2209驱动器，还能够支持其他TMC的驱动器，如下图。
TMC2209库体积小，不复杂。本文将使用TMC2209库来完成对驱动器的通讯。
打开Arduino的库管理器，搜索TMC2209，点击安装即可。如果无法在线安装，可在其GitHub中下载离线ZIP进行安装，TMC2209库GitHub链接。

2.代码部分

本文对是3个TMC2209驱动器进行通讯，对1个电机进行控制（手里就有一个电机现在。。）为例。

#include <TMC2209.h>//使用串口1对驱动进行通讯
HardwareSerial & serial_stream = Serial1;// 细分步 1.8°的电机一圈所需脉冲微 360/1.8*MICROSTEPPING
#define MICROSTEPPING 64
// 实例化3个 TMC2209驱动器
TMC2209 stepper_driver_0;
const TMC2209::SerialAddress SERIAL_ADDRESS_0 = TMC2209::SERIAL_ADDRESS_0;
TMC2209 stepper_driver_1;
const TMC2209::SerialAddress SERIAL_ADDRESS_1 = TMC2209::SERIAL_ADDRESS_1;
TMC2209 stepper_driver_2;
const TMC2209::SerialAddress SERIAL_ADDRESS_2 = TMC2209::SERIAL_ADDRESS_2;
//串口通讯的波特率
const long SERIAL_BAUD_RATE = 115200;
const int StepperEnaPin = 3; // 驱动器使能引脚
const int RX_PIN = 18;
const int TX_PIN = 17;
//串口输出延迟
const int DELAY = 2000;
//驱动器响应延迟 
const uint8_t REPLY_DELAY = 4;//电机运行电流 0~100%
const uint8_t RUN_CURRENT_PERCENT = 40;
const int32_t VELOCITY = 12800;void setup()
{Serial.begin(SERIAL_BAUD_RATE);stepper_driver_0.setup(serial_stream, SERIAL_BAUD_RATE, SERIAL_ADDRESS_0, RX_PIN, TX_PIN);stepper_driver_0.setReplyDelay(REPLY_DELAY);stepper_driver_1.setup(serial_stream, SERIAL_BAUD_RATE, SERIAL_ADDRESS_1, RX_PIN, TX_PIN);stepper_driver_1.setReplyDelay(REPLY_DELAY);stepper_driver_2.setup(serial_stream, SERIAL_BAUD_RATE, SERIAL_ADDRESS_2, RX_PIN, TX_PIN);stepper_driver_2.setReplyDelay(REPLY_DELAY);// 设置引脚为输出模式pinMode(StepperEnaPin, OUTPUT);// 输出高电平digitalWrite(StepperEnaPin, LOW);delay(DELAY);if (stepper_driver_0.isSetupAndCommunicating()){Serial.println("[Success]:Stepper driver 0 is setup and communicating!");}else {Serial.println("[Fail]:Stepper driver 0 is not setup and communicating!");}if (stepper_driver_1.isSetupAndCommunicating()){Serial.println("[Success]:Stepper driver 1 is setup and communicating!");}else {Serial.println("[Fail]:Stepper driver 1 is not setup and communicating!");}if (stepper_driver_2.isSetupAndCommunicating()){Serial.println("[Success]:Stepper driver 2 is setup and communicating!");}else {Serial.println("[Fail]:Stepper driver 2 is not setup and communicating!");}// 设置微步stepper_driver_0.setMicrostepsPerStep(MICROSTEPPING);stepper_driver_0.setHardwareEnablePin(StepperEnaPin);stepper_driver_0.setRunCurrent(RUN_CURRENT_PERCENT);stepper_driver_0.enableCoolStep();stepper_driver_0.enable();stepper_driver_0.moveAtVelocity(VELOCITY);delay(DELAY);}
void loop()
{if (not stepper_driver_0.isSetupAndCommunicating()){Serial.println("Stepper driver not setup and communicating!");return;}bool hardware_disabled = stepper_driver_0.hardwareDisabled();TMC2209::Settings settings = stepper_driver_0.getSettings();TMC2209::Status status = stepper_driver_0.getStatus();if (hardware_disabled){Serial.println("Stepper driver is hardware disabled!");}else if (not settings.software_enabled){Serial.println("Stepper driver is software disabled!");}else if ((not status.standstill)){Serial.print("Moving at velocity ");Serial.println(VELOCITY);uint32_t interstep_duration = stepper_driver_0.getInterstepDuration();Serial.print("which is equal to an interstep_duration of ");Serial.println(interstep_duration);}else{Serial.println("Not moving, something is wrong!");}Serial.println();delay(DELAY);}