Python 为什么Raspberry Pi中带有arduPi库的Arduino代码不起作用?
我正在尝试将我为Python 为什么Raspberry Pi中带有arduPi库的Arduino代码不起作用?,python,c++,arduino,raspberry-pi,Python,C++,Arduino,Raspberry Pi,我正在尝试将我为Arduino Uno编写的代码运行到我的Raspberry Pi 3中,它有一个由。代码是(led.cpp): 根据文档,我已经启用了UART(已编辑了/boot/config.txt和/boot/cmdline.txt)。我以为连接桥坏了。无论如何,为了确保屏蔽正常工作,我根据(led.py)使用适当的pin配置编写了一个python脚本,如下所示: 在本例中,python脚本工作正常,物理(pin)配置没有任何变化(这意味着Arduino上的引脚9相当于Raspberry
Arduino Uno
编写的代码运行到我的Raspberry Pi 3
中,它有一个由。代码是(led.cpp):
根据文档,我已经启用了UART(已编辑了/boot/config.txt
和/boot/cmdline.txt
)。我以为连接桥坏了。无论如何,为了确保屏蔽正常工作,我根据(led.py)使用适当的pin配置编写了一个python脚本,如下所示:
在本例中,python脚本工作正常,物理(pin)配置没有任何变化(这意味着Arduino上的引脚9相当于Raspberry Pi上的引脚22)。我的意思是连接桥也运行良好。那么,当led.py正常时,led.cpp出了什么问题
更新:
我已按照和中的指示激活了pinGPIO 4
(数字pin 3
或BCM 23
),然后使用以下各项进行实际配置:
gpio mode 4 OUT
gpio write 4 1
gpio readall
我得到:
+-----+-----+---------+------+---+---Pi 3B--+---+------+---------+-----+-----+
| BCM | wPi | Name | Mode | V | Physical | V | Mode | Name | wPi | BCM |
+-----+-----+---------+------+---+----++----+---+------+---------+-----+-----+
| | | 3.3v | | | 1 || 2 | | | 5v | | |
| 2 | 8 | SDA.1 | ALT0 | 1 | 3 || 4 | | | 5v | | |
| 3 | 9 | SCL.1 | ALT0 | 1 | 5 || 6 | | | 0v | | |
| 4 | 7 | GPIO. 7 | IN | 1 | 7 || 8 | 1 | ALT5 | TxD | 15 | 14 |
| | | 0v | | | 9 || 10 | 1 | ALT5 | RxD | 16 | 15 |
| 17 | 0 | GPIO. 0 | IN | 0 | 11 || 12 | 0 | IN | GPIO. 1 | 1 | 18 |
| 27 | 2 | GPIO. 2 | IN | 0 | 13 || 14 | | | 0v | | |
| 22 | 3 | GPIO. 3 | IN | 0 | 15 || 16 | 1 | OUT | GPIO. 4 | 4 | 23 |
| | | 3.3v | | | 17 || 18 | 0 | IN | GPIO. 5 | 5 | 24 |
| 10 | 12 | MOSI | ALT0 | 0 | 19 || 20 | | | 0v | | |
| 9 | 13 | MISO | ALT0 | 0 | 21 || 22 | 0 | IN | GPIO. 6 | 6 | 25 |
| 11 | 14 | SCLK | ALT0 | 0 | 23 || 24 | 1 | OUT | CE0 | 10 | 8 |
| | | 0v | | | 25 || 26 | 1 | OUT | CE1 | 11 | 7 |
| 0 | 30 | SDA.0 | IN | 1 | 27 || 28 | 1 | IN | SCL.0 | 31 | 1 |
| 5 | 21 | GPIO.21 | IN | 1 | 29 || 30 | | | 0v | | |
| 6 | 22 | GPIO.22 | IN | 1 | 31 || 32 | 0 | IN | GPIO.26 | 26 | 12 |
| 13 | 23 | GPIO.23 | IN | 0 | 33 || 34 | | | 0v | | |
| 19 | 24 | GPIO.24 | IN | 0 | 35 || 36 | 0 | IN | GPIO.27 | 27 | 16 |
| 26 | 25 | GPIO.25 | IN | 0 | 37 || 38 | 0 | IN | GPIO.28 | 28 | 20 |
| | | 0v | | | 39 || 40 | 0 | IN | GPIO.29 | 29 | 21 |
+-----+-----+---------+------+---+----++----+---+------+---------+-----+-----+
| BCM | wPi | Name | Mode | V | Physical | V | Mode | Name | wPi | BCM |
+-----+-----+---------+------+---+---Pi 3B--+---+------+---------+-----+-----+
为了验证arduPi库,我编写了一个程序来读取数字引脚2-9,它看起来像(pin_reader.cpp):
在上一步中,我在
GPIO 4
(digital pin 3
或BCM 23
)处应用了1(高),并通过GPIO readall
或GPIO read 4
进行验证(如预期的那样给出1
)。但是,我从ardupi获得了0
而不是1
,使用digitalRead
为什么digitalRead给出的值超出预期值?您能运行任何ardupi示例吗?@NathanWride一点也不能。这至少排除了您在代码方面所做的任何事情。您是否能够执行备注中列出的命令?你能运行任何ardupi示例吗?@NathanWride一点也不能。这至少排除了你在代码方面所做的任何事情。您是否能够执行备注中列出的命令?
gpio mode 4 OUT
gpio write 4 1
gpio readall
+-----+-----+---------+------+---+---Pi 3B--+---+------+---------+-----+-----+
| BCM | wPi | Name | Mode | V | Physical | V | Mode | Name | wPi | BCM |
+-----+-----+---------+------+---+----++----+---+------+---------+-----+-----+
| | | 3.3v | | | 1 || 2 | | | 5v | | |
| 2 | 8 | SDA.1 | ALT0 | 1 | 3 || 4 | | | 5v | | |
| 3 | 9 | SCL.1 | ALT0 | 1 | 5 || 6 | | | 0v | | |
| 4 | 7 | GPIO. 7 | IN | 1 | 7 || 8 | 1 | ALT5 | TxD | 15 | 14 |
| | | 0v | | | 9 || 10 | 1 | ALT5 | RxD | 16 | 15 |
| 17 | 0 | GPIO. 0 | IN | 0 | 11 || 12 | 0 | IN | GPIO. 1 | 1 | 18 |
| 27 | 2 | GPIO. 2 | IN | 0 | 13 || 14 | | | 0v | | |
| 22 | 3 | GPIO. 3 | IN | 0 | 15 || 16 | 1 | OUT | GPIO. 4 | 4 | 23 |
| | | 3.3v | | | 17 || 18 | 0 | IN | GPIO. 5 | 5 | 24 |
| 10 | 12 | MOSI | ALT0 | 0 | 19 || 20 | | | 0v | | |
| 9 | 13 | MISO | ALT0 | 0 | 21 || 22 | 0 | IN | GPIO. 6 | 6 | 25 |
| 11 | 14 | SCLK | ALT0 | 0 | 23 || 24 | 1 | OUT | CE0 | 10 | 8 |
| | | 0v | | | 25 || 26 | 1 | OUT | CE1 | 11 | 7 |
| 0 | 30 | SDA.0 | IN | 1 | 27 || 28 | 1 | IN | SCL.0 | 31 | 1 |
| 5 | 21 | GPIO.21 | IN | 1 | 29 || 30 | | | 0v | | |
| 6 | 22 | GPIO.22 | IN | 1 | 31 || 32 | 0 | IN | GPIO.26 | 26 | 12 |
| 13 | 23 | GPIO.23 | IN | 0 | 33 || 34 | | | 0v | | |
| 19 | 24 | GPIO.24 | IN | 0 | 35 || 36 | 0 | IN | GPIO.27 | 27 | 16 |
| 26 | 25 | GPIO.25 | IN | 0 | 37 || 38 | 0 | IN | GPIO.28 | 28 | 20 |
| | | 0v | | | 39 || 40 | 0 | IN | GPIO.29 | 29 | 21 |
+-----+-----+---------+------+---+----++----+---+------+---------+-----+-----+
| BCM | wPi | Name | Mode | V | Physical | V | Mode | Name | wPi | BCM |
+-----+-----+---------+------+---+---Pi 3B--+---+------+---------+-----+-----+
#include "arduPi.h"
void setup()
{
printf("Ard\tRPi\tVal\n");
for(int pin = 2; pin <= 9; pin++)
{
printf("%d\t%d\t%d\n", pin, raspberryPinNumber(pin), digitalRead(pin));
delay(1000);
}
exit(0);
}
void loop()
{
//delay(5000);
}
int main (){
setup();
while(1){
loop();
}
return (0);
}
Ard RPi Val
2 18 0
3 23 0
4 24 1
5 25 1
6 4 0
7 17 1
8 27 1
9 22 0