激光雷达传感器无法正常工作 - 如何在 arduino 上通过 I2C 使用两个激光雷达传感器
Lidar Sensors not working properly - How to work with two lidar Sensors over I2C on arduino
我目前正在与一些朋友一起开展一个项目,该项目是关于基于 ARDUINO 和 GARMIN Lidar v3HP 的激光雷达测量,我们正在从传感器中获得一些有问题的读数。它们似乎有效,但测量结果不正确。
我们的数据和地址都有问题,我们为传感器设置了两个不同的地址 0x42 和 0x43,但其中一个传感器保持默认地址。
#include <Arduino.h>
#include <Wire.h>
#include <stdint.h>
#include <LIDARLite_v3HP.h>
#include <I2CFunctions.h>
#define POWER_ENABLE_S1 12
#define POWER_ENABLE_S2 11
#define DEFAULT_ADDRESS 98
#define FAST_I2C
#define NUMERO_LIDARS 2
LIDARLite_v3HP Sensor1;
LIDARLite_v3HP Sensor2;
int detectedAddreses[NUMERO_LIDARS];
int currentAdd;
int deviceCount = 0;
int i = 0;
void scanI2C()
{
int nDevices = 0;
while (i < NUMERO_LIDARS)
{
for (byte addr = 1; addr < 127; ++addr)
{
Wire.beginTransmission(addr);
byte error = Wire.endTransmission();
if (error == 0)
{
Serial.print("Se encontro un dispositivo en ");
Serial.print(addr);
Serial.println(" !");
++nDevices;
detectedAddreses[i] = addr;
if (addr == DEFAULT_ADDRESS)
{
configSensors(i, 66 + deviceCount, addr);
detectedAddreses[i] = addr;
i++;
}else{
detectedAddreses[i] = addr;
i++;
}
}
else if (error == 4)
{
Serial.print("Error desconocido en ");
Serial.println(addr);
}
}
if (nDevices == 0)
{
Serial.println("No se encontraron dispositivos\n");
}
else
{
Serial.println("Terminado\n");
}
}
}
void configSensors(int sensor, uint8_t new_address, uint8_t old_address)
{
switch (sensor)
{
case 0:
Sensor1.setI2Caddr(new_address, 0, old_address);
digitalWrite(POWER_ENABLE_S1, LOW);
//detectedAddreses[sensor] = new_address;
deviceCount++;
Sensor1.configure(0,new_address);
break;
case 1:
Sensor2.setI2Caddr(new_address, 0, old_address);
digitalWrite(POWER_ENABLE_S2, LOW);
//detectedAddreses[sensor] = new_address;
deviceCount++;
Sensor2.configure(0,new_address);
i = 999;
break;
case 2:
break;
}
}
void setup()
{
Serial.begin(115200);
#ifdef FAST_I2C
#if ARDUINO >= 157
Wire.setClock(400000UL); // Set I2C frequency to 400kHz (for Arduino Due)
#else
TWBR = ((F_CPU / 400000UL) - 16) / 2; // Set I2C frequency to 400kHz
#endif
#endif
pinMode(POWER_ENABLE_S1, OUTPUT);
pinMode(POWER_ENABLE_S2, OUTPUT);
digitalWrite(POWER_ENABLE_S1, HIGH);
digitalWrite(POWER_ENABLE_S2, HIGH);
Wire.begin();
scanI2C();
digitalWrite(POWER_ENABLE_S1,HIGH);
digitalWrite(POWER_ENABLE_S2,HIGH);
Sensor1.configure(3,detectedAddreses[0]);
Sensor2.configure(3,detectedAddreses[1]);
}
void measure(){
float s1;
float s2;
Sensor1.waitForBusy();
Sensor1.takeRange();
Sensor1.waitForBusy();
s1 = Sensor1.readDistance(detectedAddreses[0]);
Sensor2.waitForBusy();
Sensor2.takeRange();
Sensor2.waitForBusy();
s2 = Sensor2.readDistance(detectedAddreses[1]);
Serial.println("Sensor 1: " + String(s1) + "; Sensor 2: " + String(s2));
}
void loop()
{
/*Serial.println(detectedAddreses[0]);
Serial.println(detectedAddreses[1]);*/
measure();
}
根据您的热门评论,同时配置两个激光雷达可能存在问题。
在出厂默认情况下,它们将两者 响应默认 I2C 地址 0x62。因此,当您尝试一次重新配置 one 时,它们将 both 响应 [并且可能存在竞争条件] 并且 两个都被编程到新的I2C地址。
If[这是一个很大的if]激光雷达可以将配置保存到单元上的非易失性存储器中,您可以连接one 一次 [physically/manually] 并给他们不同的地址。本机保存地址。并且,下一次,将只响应“新”地址。
然后,在重新配置两个单元后,您可以同时连接两个单元,它们将[根据需要]单独响应。
我看了 .pdf
和接线图。您可以将激光雷达的电源引脚 [或启用引脚] 连接到 Arduino GPIO 端口引脚(而不是 +5V)。然后,您可以单独控制每个单元的电源。然后,您可以像上面那样重新配置两者。也就是说,断言一个电源,重新配置它,关闭它 [使用保存的配置]。对另一个单元执行此操作。然后,您可以启动两个单元[此时,它们正在响应不同的 I2C 地址]。
不知道 Garmin 是否立即启动激光器,或者您是否必须给它一个“启动”命令。如果没有没有单独的启动命令,能够单独控制电源可能是一件好事。
我不熟悉 Garmin 的激光雷达,但我写了 S/W 来控制 Velodyne 激光雷达,我们不得不以交错的方式施加电源,因为当它们 启动会使系统“断电”。与 Garmin,YMMV。
如果一切都失败了,您可能必须将每个单元放在 separate/different 物理 I2C 总线上 [因为您无法单独重新配置它们]。
这是工作代码,
传感器连接在同一 I2C 总线上,每个传感器的电源启用引脚和接地连接到 arduino。传感器的电源由 11.1V 电池提供,电源调节器为 5V
#include <Arduino.h>
#include <Wire.h>
#include <stdint.h>
#include <LIDARLite_v3HP.h>
#include <I2CFunctions.h>
#define POWER_ENABLE_S1 12
#define POWER_ENABLE_S2 11
#define DEFAULT_ADDRESS 98
#define FAST_I2C
#define NUMERO_LIDARS 2
LIDARLite_v3HP Sensor1;
LIDARLite_v3HP Sensor2;
int detectedAddreses[NUMERO_LIDARS];
int currentAdd;
int deviceCount = 0;
int i = 0;
void scanI2C()
{
int nDevices = 0;
while (i < NUMERO_LIDARS)
{
for (byte addr = 1; addr < 127; ++addr)
{
Wire.beginTransmission(addr);
byte error = Wire.endTransmission();
if (error == 0)
{
Serial.print("Se encontro un dispositivo en ");
Serial.print(addr);
Serial.println(" !");
++nDevices;
detectedAddreses[i] = addr;
if (addr == DEFAULT_ADDRESS)
{
configSensors(i, 66 + deviceCount, addr);
detectedAddreses[i] = addr;
i++;
}else{
detectedAddreses[i] = addr;
i++;
}
}
else if (error == 4)
{
Serial.print("Error desconocido en ");
Serial.println(addr);
}
}
if (nDevices == 0)
{
Serial.println("No se encontraron dispositivos\n");
}
else
{
Serial.println("Terminado\n");
}
}
}
void configSensors(int sensor, uint8_t new_address, uint8_t old_address)
{
switch (sensor)
{
case 0:
Sensor1.setI2Caddr(new_address, 0, old_address);
digitalWrite(POWER_ENABLE_S1, LOW);
//detectedAddreses[sensor] = new_address;
deviceCount++;
Sensor1.configure(0,new_address);
break;
case 1:
Sensor2.setI2Caddr(new_address, 0, old_address);
digitalWrite(POWER_ENABLE_S2, LOW);
//detectedAddreses[sensor] = new_address;
deviceCount++;
Sensor2.configure(0,new_address);
i = 999;
break;
case 2:
break;
}
}
void setup()
{
Serial.begin(115200);
#ifdef FAST_I2C
#if ARDUINO >= 157
Wire.setClock(400000UL); // Set I2C frequency to 400kHz (for Arduino Due)
#else
TWBR = ((F_CPU / 400000UL) - 16) / 2; // Set I2C frequency to 400kHz
#endif
#endif
pinMode(POWER_ENABLE_S1, OUTPUT);
pinMode(POWER_ENABLE_S2, OUTPUT);
digitalWrite(POWER_ENABLE_S1, HIGH);
digitalWrite(POWER_ENABLE_S2, HIGH);
Wire.begin();
scanI2C();
digitalWrite(POWER_ENABLE_S1,HIGH);
digitalWrite(POWER_ENABLE_S2,HIGH);
Sensor1.configure(3,detectedAddreses[0]);
Sensor2.configure(3,detectedAddreses[1]);
}
void measure(){
float s1;
float s2;
digitalWrite(POWER_ENABLE_S1,HIGH);
digitalWrite(POWER_ENABLE_S2,LOW);
delay(25);
Sensor1.waitForBusy();
Sensor1.takeRange();
Sensor1.waitForBusy();
s1 = Sensor1.readDistance(detectedAddreses[0]);
digitalWrite(POWER_ENABLE_S1,LOW);
digitalWrite(POWER_ENABLE_S2,HIGH);
delay(25);
Sensor2.waitForBusy();
Sensor2.takeRange();
Sensor2.waitForBusy();
s2 = Sensor2.readDistance(detectedAddreses[1]);
Serial.println("Sensor 1: " + String(s1) + "; Sensor 2: " + String(s2));
}
void loop()
{
/*Serial.println(detectedAddreses[0]);
Serial.println(detectedAddreses[1]);*/
measure();
}
我目前正在与一些朋友一起开展一个项目,该项目是关于基于 ARDUINO 和 GARMIN Lidar v3HP 的激光雷达测量,我们正在从传感器中获得一些有问题的读数。它们似乎有效,但测量结果不正确。
我们的数据和地址都有问题,我们为传感器设置了两个不同的地址 0x42 和 0x43,但其中一个传感器保持默认地址。
#include <Arduino.h>
#include <Wire.h>
#include <stdint.h>
#include <LIDARLite_v3HP.h>
#include <I2CFunctions.h>
#define POWER_ENABLE_S1 12
#define POWER_ENABLE_S2 11
#define DEFAULT_ADDRESS 98
#define FAST_I2C
#define NUMERO_LIDARS 2
LIDARLite_v3HP Sensor1;
LIDARLite_v3HP Sensor2;
int detectedAddreses[NUMERO_LIDARS];
int currentAdd;
int deviceCount = 0;
int i = 0;
void scanI2C()
{
int nDevices = 0;
while (i < NUMERO_LIDARS)
{
for (byte addr = 1; addr < 127; ++addr)
{
Wire.beginTransmission(addr);
byte error = Wire.endTransmission();
if (error == 0)
{
Serial.print("Se encontro un dispositivo en ");
Serial.print(addr);
Serial.println(" !");
++nDevices;
detectedAddreses[i] = addr;
if (addr == DEFAULT_ADDRESS)
{
configSensors(i, 66 + deviceCount, addr);
detectedAddreses[i] = addr;
i++;
}else{
detectedAddreses[i] = addr;
i++;
}
}
else if (error == 4)
{
Serial.print("Error desconocido en ");
Serial.println(addr);
}
}
if (nDevices == 0)
{
Serial.println("No se encontraron dispositivos\n");
}
else
{
Serial.println("Terminado\n");
}
}
}
void configSensors(int sensor, uint8_t new_address, uint8_t old_address)
{
switch (sensor)
{
case 0:
Sensor1.setI2Caddr(new_address, 0, old_address);
digitalWrite(POWER_ENABLE_S1, LOW);
//detectedAddreses[sensor] = new_address;
deviceCount++;
Sensor1.configure(0,new_address);
break;
case 1:
Sensor2.setI2Caddr(new_address, 0, old_address);
digitalWrite(POWER_ENABLE_S2, LOW);
//detectedAddreses[sensor] = new_address;
deviceCount++;
Sensor2.configure(0,new_address);
i = 999;
break;
case 2:
break;
}
}
void setup()
{
Serial.begin(115200);
#ifdef FAST_I2C
#if ARDUINO >= 157
Wire.setClock(400000UL); // Set I2C frequency to 400kHz (for Arduino Due)
#else
TWBR = ((F_CPU / 400000UL) - 16) / 2; // Set I2C frequency to 400kHz
#endif
#endif
pinMode(POWER_ENABLE_S1, OUTPUT);
pinMode(POWER_ENABLE_S2, OUTPUT);
digitalWrite(POWER_ENABLE_S1, HIGH);
digitalWrite(POWER_ENABLE_S2, HIGH);
Wire.begin();
scanI2C();
digitalWrite(POWER_ENABLE_S1,HIGH);
digitalWrite(POWER_ENABLE_S2,HIGH);
Sensor1.configure(3,detectedAddreses[0]);
Sensor2.configure(3,detectedAddreses[1]);
}
void measure(){
float s1;
float s2;
Sensor1.waitForBusy();
Sensor1.takeRange();
Sensor1.waitForBusy();
s1 = Sensor1.readDistance(detectedAddreses[0]);
Sensor2.waitForBusy();
Sensor2.takeRange();
Sensor2.waitForBusy();
s2 = Sensor2.readDistance(detectedAddreses[1]);
Serial.println("Sensor 1: " + String(s1) + "; Sensor 2: " + String(s2));
}
void loop()
{
/*Serial.println(detectedAddreses[0]);
Serial.println(detectedAddreses[1]);*/
measure();
}
根据您的热门评论,同时配置两个激光雷达可能存在问题。
在出厂默认情况下,它们将两者 响应默认 I2C 地址 0x62。因此,当您尝试一次重新配置 one 时,它们将 both 响应 [并且可能存在竞争条件] 并且 两个都被编程到新的I2C地址。
If[这是一个很大的if]激光雷达可以将配置保存到单元上的非易失性存储器中,您可以连接one 一次 [physically/manually] 并给他们不同的地址。本机保存地址。并且,下一次,将只响应“新”地址。
然后,在重新配置两个单元后,您可以同时连接两个单元,它们将[根据需要]单独响应。
我看了 .pdf
和接线图。您可以将激光雷达的电源引脚 [或启用引脚] 连接到 Arduino GPIO 端口引脚(而不是 +5V)。然后,您可以单独控制每个单元的电源。然后,您可以像上面那样重新配置两者。也就是说,断言一个电源,重新配置它,关闭它 [使用保存的配置]。对另一个单元执行此操作。然后,您可以启动两个单元[此时,它们正在响应不同的 I2C 地址]。
不知道 Garmin 是否立即启动激光器,或者您是否必须给它一个“启动”命令。如果没有没有单独的启动命令,能够单独控制电源可能是一件好事。
我不熟悉 Garmin 的激光雷达,但我写了 S/W 来控制 Velodyne 激光雷达,我们不得不以交错的方式施加电源,因为当它们 启动会使系统“断电”。与 Garmin,YMMV。
如果一切都失败了,您可能必须将每个单元放在 separate/different 物理 I2C 总线上 [因为您无法单独重新配置它们]。
这是工作代码,
传感器连接在同一 I2C 总线上,每个传感器的电源启用引脚和接地连接到 arduino。传感器的电源由 11.1V 电池提供,电源调节器为 5V
#include <Arduino.h>
#include <Wire.h>
#include <stdint.h>
#include <LIDARLite_v3HP.h>
#include <I2CFunctions.h>
#define POWER_ENABLE_S1 12
#define POWER_ENABLE_S2 11
#define DEFAULT_ADDRESS 98
#define FAST_I2C
#define NUMERO_LIDARS 2
LIDARLite_v3HP Sensor1;
LIDARLite_v3HP Sensor2;
int detectedAddreses[NUMERO_LIDARS];
int currentAdd;
int deviceCount = 0;
int i = 0;
void scanI2C()
{
int nDevices = 0;
while (i < NUMERO_LIDARS)
{
for (byte addr = 1; addr < 127; ++addr)
{
Wire.beginTransmission(addr);
byte error = Wire.endTransmission();
if (error == 0)
{
Serial.print("Se encontro un dispositivo en ");
Serial.print(addr);
Serial.println(" !");
++nDevices;
detectedAddreses[i] = addr;
if (addr == DEFAULT_ADDRESS)
{
configSensors(i, 66 + deviceCount, addr);
detectedAddreses[i] = addr;
i++;
}else{
detectedAddreses[i] = addr;
i++;
}
}
else if (error == 4)
{
Serial.print("Error desconocido en ");
Serial.println(addr);
}
}
if (nDevices == 0)
{
Serial.println("No se encontraron dispositivos\n");
}
else
{
Serial.println("Terminado\n");
}
}
}
void configSensors(int sensor, uint8_t new_address, uint8_t old_address)
{
switch (sensor)
{
case 0:
Sensor1.setI2Caddr(new_address, 0, old_address);
digitalWrite(POWER_ENABLE_S1, LOW);
//detectedAddreses[sensor] = new_address;
deviceCount++;
Sensor1.configure(0,new_address);
break;
case 1:
Sensor2.setI2Caddr(new_address, 0, old_address);
digitalWrite(POWER_ENABLE_S2, LOW);
//detectedAddreses[sensor] = new_address;
deviceCount++;
Sensor2.configure(0,new_address);
i = 999;
break;
case 2:
break;
}
}
void setup()
{
Serial.begin(115200);
#ifdef FAST_I2C
#if ARDUINO >= 157
Wire.setClock(400000UL); // Set I2C frequency to 400kHz (for Arduino Due)
#else
TWBR = ((F_CPU / 400000UL) - 16) / 2; // Set I2C frequency to 400kHz
#endif
#endif
pinMode(POWER_ENABLE_S1, OUTPUT);
pinMode(POWER_ENABLE_S2, OUTPUT);
digitalWrite(POWER_ENABLE_S1, HIGH);
digitalWrite(POWER_ENABLE_S2, HIGH);
Wire.begin();
scanI2C();
digitalWrite(POWER_ENABLE_S1,HIGH);
digitalWrite(POWER_ENABLE_S2,HIGH);
Sensor1.configure(3,detectedAddreses[0]);
Sensor2.configure(3,detectedAddreses[1]);
}
void measure(){
float s1;
float s2;
digitalWrite(POWER_ENABLE_S1,HIGH);
digitalWrite(POWER_ENABLE_S2,LOW);
delay(25);
Sensor1.waitForBusy();
Sensor1.takeRange();
Sensor1.waitForBusy();
s1 = Sensor1.readDistance(detectedAddreses[0]);
digitalWrite(POWER_ENABLE_S1,LOW);
digitalWrite(POWER_ENABLE_S2,HIGH);
delay(25);
Sensor2.waitForBusy();
Sensor2.takeRange();
Sensor2.waitForBusy();
s2 = Sensor2.readDistance(detectedAddreses[1]);
Serial.println("Sensor 1: " + String(s1) + "; Sensor 2: " + String(s2));
}
void loop()
{
/*Serial.println(detectedAddreses[0]);
Serial.println(detectedAddreses[1]);*/
measure();
}