July 25, 20233 yr Armbian 23.08.0-trunk Bookworm with Linux 5.10.160-rk35xx root@orangepi5-plus:~# gpio -v gpio version: 2.46 Copyright (c) 2012-2018 Gordon Henderson This is free software with ABSOLUTELY NO WARRANTY. For details type: gpio -warranty * Device tree is enabled. *--> Orange Pi 5 Plus root@orangepi5-plus:~# gpio readall wiringPiSetup: mmap (GPIO) failed: Operation not permitted
July 25, 20233 yr Read OttawaHacker's post of 2 days ago: https://forum.armbian.com/topic/29352-udev-for-i2c-and-gpio/ Edited July 25, 20233 yr by royk Misread
September 6, 20233 yr Hello! I also have this issue! I believe it's a kernel flag to allow read/write of dev/mem Anyway of changing that without compiling a custom kernel? Strace log root@orangepi5-plus:~# strace gpio readall execve("/usr/local/bin/gpio", ["gpio", "readall"], 0xffffd664ff88 /* 21 vars */) = 0 brk(NULL) = 0xaaaac110a000 mmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xffff8f698000 faccessat(AT_FDCWD, "/etc/ld.so.preload", R_OK) = -1 ENOENT (No such file or directory) openat(AT_FDCWD, "/etc/ld.so.cache", O_RDONLY|O_CLOEXEC) = 3 newfstatat(3, "", {st_mode=S_IFREG|0644, st_size=99325, ...}, AT_EMPTY_PATH) = 0 mmap(NULL, 99325, PROT_READ, MAP_PRIVATE, 3, 0) = 0xffff8f64b000 close(3) = 0 openat(AT_FDCWD, "/usr/local/lib/libwiringPi.so", O_RDONLY|O_CLOEXEC) = 3 read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0\267\0\1\0\0\0\0\0\0\0\0\0\0\0"..., 832) = 832 newfstatat(3, "", {st_mode=S_IFREG|0755, st_size=154496, ...}, AT_EMPTY_PATH) = 0 mmap(NULL, 266552, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xffff8f609000 mmap(0xffff8f610000, 201016, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0) = 0xffff8f610000 munmap(0xffff8f609000, 28672) = 0 munmap(0xffff8f642000, 33080) = 0 mprotect(0xffff8f627000, 61440, PROT_NONE) = 0 mmap(0xffff8f636000, 40960, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x16000) = 0xffff8f636000 mmap(0xffff8f640000, 4408, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0xffff8f640000 close(3) = 0 openat(AT_FDCWD, "/usr/local/lib/libwiringPiDev.so", O_RDONLY|O_CLOEXEC) = 3 read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0\267\0\1\0\0\0\0\0\0\0\0\0\0\0"..., 832) = 832 newfstatat(3, "", {st_mode=S_IFREG|0755, st_size=37016, ...}, AT_EMPTY_PATH) = 0 mmap(NULL, 167040, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xffff8f5e7000 mmap(0xffff8f5f0000, 101504, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0) = 0xffff8f5f0000 munmap(0xffff8f5e7000, 36864) = 0 munmap(0xffff8f609000, 27776) = 0 mprotect(0xffff8f5f6000, 61440, PROT_NONE) = 0 mmap(0xffff8f605000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x5000) = 0xffff8f605000 mmap(0xffff8f607000, 7296, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0xffff8f607000 close(3) = 0 openat(AT_FDCWD, "/lib/aarch64-linux-gnu/libc.so.6", O_RDONLY|O_CLOEXEC) = 3 read(3, "\177ELF\2\1\1\3\0\0\0\0\0\0\0\0\3\0\267\0\1\0\0\0\340u\2\0\0\0\0\0"..., 832) = 832 newfstatat(3, "", {st_mode=S_IFREG|0644, st_size=1641496, ...}, AT_EMPTY_PATH) = 0 mmap(NULL, 1810024, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xffff8f436000 mmap(0xffff8f440000, 1744488, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0) = 0xffff8f440000 munmap(0xffff8f436000, 40960) = 0 munmap(0xffff8f5ea000, 24168) = 0 mprotect(0xffff8f5c9000, 61440, PROT_NONE) = 0 mmap(0xffff8f5d8000, 24576, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x188000) = 0xffff8f5d8000 mmap(0xffff8f5de000, 48744, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0xffff8f5de000 close(3) = 0 openat(AT_FDCWD, "/lib/aarch64-linux-gnu/libm.so.6", O_RDONLY|O_CLOEXEC) = 3 read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0\267\0\1\0\0\0\0\0\0\0\0\0\0\0"..., 832) = 832 newfstatat(3, "", {st_mode=S_IFREG|0644, st_size=551064, ...}, AT_EMPTY_PATH) = 0 mmap(NULL, 680048, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xffff8f399000 mmap(0xffff8f3a0000, 614512, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0) = 0xffff8f3a0000 munmap(0xffff8f399000, 28672) = 0 munmap(0xffff8f437000, 32880) = 0 mprotect(0xffff8f426000, 61440, PROT_NONE) = 0 mmap(0xffff8f435000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x85000) = 0xffff8f435000 close(3) = 0 openat(AT_FDCWD, "/lib/aarch64-linux-gnu/libcrypt.so.1", O_RDONLY|O_CLOEXEC) = 3 read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0\267\0\1\0\0\0\20\25\0\0\0\0\0\0"..., 832) = 832 newfstatat(3, "", {st_mode=S_IFREG|0644, st_size=186296, ...}, AT_EMPTY_PATH) = 0 mmap(NULL, 348512, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xffff8f34a000 mmap(0xffff8f350000, 282976, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0) = 0xffff8f350000 munmap(0xffff8f34a000, 24576) = 0 munmap(0xffff8f396000, 37216) = 0 mprotect(0xffff8f37d000, 61440, PROT_NONE) = 0 mmap(0xffff8f38c000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x2c000) = 0xffff8f38c000 mmap(0xffff8f38e000, 29024, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0xffff8f38e000 close(3) = 0 mmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xffff8f696000 set_tid_address(0xffff8f696b10) = 11233 set_robust_list(0xffff8f696b20, 24) = 0 rseq(0xffff8f6971e0, 0x20, 0, 0xd428bc00) = 0 mprotect(0xffff8f5d8000, 16384, PROT_READ) = 0 mprotect(0xffff8f38c000, 4096, PROT_READ) = 0 mprotect(0xffff8f435000, 4096, PROT_READ) = 0 mprotect(0xffff8f605000, 4096, PROT_READ) = 0 mprotect(0xffff8f636000, 4096, PROT_READ) = 0 mprotect(0xaaaaab06d000, 4096, PROT_READ) = 0 mprotect(0xffff8f69d000, 8192, PROT_READ) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 munmap(0xffff8f64b000, 99325) = 0 geteuid() = 0 getrandom("\x97\x05\x6a\x79\xe5\x03\x78\xac", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0xaaaac110a000 brk(0xaaaac112b000) = 0xaaaac112b000 openat(AT_FDCWD, "/etc/orangepi-release", O_RDONLY) = -1 ENOENT (No such file or directory) openat(AT_FDCWD, "/etc/armbian-release", O_RDONLY) = 3 newfstatat(3, "", {st_mode=S_IFREG|0644, st_size=464, ...}, AT_EMPTY_PATH) = 0 read(3, "# PLEASE DO NOT EDIT THIS FILE\nB"..., 4096) = 464 close(3) = 0 openat(AT_FDCWD, "/dev/mem", O_RDWR|O_SYNC|O_CLOEXEC) = 3 #ERROS HERE -dan mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_SHARED, 3, 0x300b000) = -1 EPERM (Operation not permitted) write(2, "wiringPiSetup: mmap (GPIO) faile"..., 59wiringPiSetup: mmap (GPIO) failed: Operation not permitted ) = 59 exit_group(1) = ? +++ exited with 1 +++
September 8, 20233 yr I've just compiled a new kernel with almost the default config, the things I've changed have nothing to do with access to the GPIO pins and I've never seen these errors. What have you tried? Did you install the right branch of Wiringpi? git clone https://github.com/orangepi-xunlong/wiringOP.git --branch next cd wiringOP ./build clean ./build Then just run "GPIO read all" Works here without root, perhaps the default user groups have been changed? But first see if this works.
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