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calcinai avatar calcinai commented on May 30, 2024

Hi @wf58585858 Apologies for the slow response. I'll take a look at this over the weekend and see if I can fix both issues!

from phpi.

wf58585858 avatar wf58585858 commented on May 30, 2024

Thank you for the response!

Based on my research, I found that the official OS from Raspberry Pi is more compatible with Raspberry Pi, so I switched to using the official OS.

Additionally, I have a few optimization suggestions. Please see if you can consider adopting them, if it's not too much trouble.

  1. PHP has now reached version 8.3. It may be worth compiling various releases of https://github.com/calcinai/php-ext-mmap to make it easier for those in need to use. So far, I haven't found a library that can replace this functionality, so your library might be helpful to many people.

  2. Open a project on packagist.org to provide fread(), fwrite(), fseek(), fclose() for mmap, with OS files directly placed in the PHP source code and imported using the dl function. This approach is only effective in CLI. If users are using php-fpm, give them a prompt to configure it in php.ini. Basically, if there are no bug-related issues, maintenance may not be necessary in the future.

  3. Update https://github.com/calcinai/phpi to adapt to PHP 8 syntax and Raspberry Pi 5. Syntax before PHP 7.4 can be disregarded for compatibility. Import mmap via Composer so that Python-related issues are not a concern. After all, if someone knows Python, they might not need this project.

┌─[root@raspberrypi] - [/sys/class/gpio] - [2024-04-10 03:53:00]
└─[0] <> lla                 
total 0
drwxrwxr-x  2 root gpio    0 2024/04/04 11:19:42 ./
drwxr-xr-x 65 root root    0 1970/01/01 01:00:03 ../
--w--w----  1 root gpio 4.0K 2024/04/04 11:19:42 export
lrwxrwxrwx  1 root gpio    0 2024/04/04 11:19:42 gpiochip512 -> ../../devices/platform/soc/3f200000.gpio/gpio/gpiochip512/
lrwxrwxrwx  1 root gpio    0 2024/04/04 11:19:42 gpiochip566 -> ../../devices/platform/soc/soc:firmware/soc:firmware:expgpio/gpio/gpiochip566/
--w--w----  1 root gpio 4.0K 2024/04/04 11:19:42 unexport

You can see that the base number is 512. Many tutorials suggest using echo 10 > /sys/class/gpio/export to export a pin.
In my case this doesn't work; I have to use echo 522 > /sys/class/gpio/export to export the same pin. So when I operate GPIO, it looks like this:


┌─[root@raspberrypi] - [/sys/class/gpio] - [2024-04-10 03:53:01]
└─[0] <> echo 10 > export       
echo: write error: invalid argument

┌─[root@raspberrypi] - [/sys/class/gpio] - [2024-04-10 03:55:15]
└─[1] <> echo 522 > /sys/class/gpio/export

┌─[root@raspberrypi] - [/sys/class/gpio] - [2024-04-10 03:57:16]
└─[0] <> lla
total 0
drwxrwxr-x  2 root gpio    0 2024/04/10 03:57:16 ./
drwxr-xr-x 65 root root    0 1970/01/01 01:00:03 ../
--w--w----  1 root gpio 4.0K 2024/04/10 03:57:16 export
lrwxrwxrwx  1 root root    0 2024/04/10 03:57:19 gpio522 -> ../../devices/platform/soc/3f200000.gpio/gpiochip0/gpio/gpio522/
lrwxrwxrwx  1 root gpio    0 2024/04/04 11:19:42 gpiochip512 -> ../../devices/platform/soc/3f200000.gpio/gpio/gpiochip512/
lrwxrwxrwx  1 root gpio    0 2024/04/04 11:19:42 gpiochip566 -> ../../devices/platform/soc/soc:firmware/soc:firmware:expgpio/gpio/gpiochip566/
--w--w----  1 root gpio 4.0K 2024/04/04 11:19:42 unexport

┌─[root@raspberrypi] - [/sys/class/gpio] - [2024-04-10 03:57:19]
└─[0] <> echo 1 > gpio522/value    

┌─[root@raspberrypi] - [/sys/class/gpio] - [2024-04-10 03:58:15]
└─[0] <> cat gpio522/value
1

┌─[root@raspberrypi] - [/sys/class/gpio] - [2024-04-10 03:58:28]
└─[0] <>

I've noticed that some Raspberry Pis have this problem while others don't. So I'm not sure if your library can automatically handle this issue.
Do you need to add a setting like setBaseNumber(512) during initialization?

  1. In demo/info.php , the renderHeader function can be replaced with the Table class from symfony/console, which is more elegant!

https://symfony.com/doc/current/components/console/helpers/table.html

like this :

   	use Symfony\Component\Console\Helper\Table;
   	
       $table = new Table($output);
       $table
           ->setHeaders(['ISBN', 'Title', 'Author'])
           ->setRows([
               ['99921-58-10-7', 'Divine Comedy', 'Dante Alighieri'],
               ['9971-5-0210-0', 'A Tale of Two Cities', 'Charles Dickens'],
               ['960-425-059-0', 'The Lord of the Rings', 'J. R. R. Tolkien'],
               ['80-902734-1-6', 'And Then There Were None', 'Agatha Christie'],
           ])
       ;
       $table->render();

from phpi.

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