Olimex: no battery found

[markus2330]

When running battop v0.2.4 with battery v0.7.4 on ARM Linux A20-OLinuXino-LIME2 I get following error:

2023-02-19T14:43:20+01:00 - ERROR - Unable to find any batteries in system, exiting
Error: NoBatteries

but there is a battery:

$ ls /sys/class/power_supply/axp20x-battery/
capacity  constant_charge_current  constant_charge_current_max  current_now  device  health  online  power  present  status  subsystem  type  uevent  voltage_max_design  voltage_min_design  voltage_now  wakeup5
$ cat /sys/class/power_supply/axp20x-battery/status
Not charging
$ cat /sys/class/power_supply/axp20x-battery/health 
Good
$ cat /sys/class/power_supply/axp20x-battery/capacity
99
$ cat /sys/class/power_supply/axp20x-battery/online 
1
$ cat /sys/class/power_supply/axp20x-battery/present
1
$ cat /sys/class/power_supply/axp20x-battery/type
Battery

the strace (shortened):

openat(AT_FDCWD, "/sys/class/power_supply", O_RDONLY|O_NONBLOCK|O_LARGEFILE|O_CLOEXEC|O_DIRECTORY) = 3
fstat64(3, {st_mode=S_IFDIR|0755, st_size=0, ...}) = 0
getdents64(3, 0xa109cd8 /* 4 entries */, 32768) = 120
openat(AT_FDCWD, "/sys/class/power_supply/axp20x-ac/type", O_RDONLY|O_LARGEFILE|O_CLOEXEC) = 4
statx(0, NULL, AT_STATX_SYNC_AS_STAT, STATX_ALL, NULL) = -1 EFAULT (Ungültige Adresse)
statx(4, "", AT_STATX_SYNC_AS_STAT|AT_EMPTY_PATH, STATX_ALL, {stx_mask=STATX_BASIC_STATS|STATX_MNT_ID, stx_attributes=0, stx_mode=S_IFREG|0444, stx_size=4096, ...}) = 0
read(4, "Mains\n", 4097)                = 6
read(4, "", 4091)                       = 0
close(4)                                = 0
openat(AT_FDCWD, "/sys/class/power_supply/axp20x-battery/type", O_RDONLY|O_LARGEFILE|O_CLOEXEC) = 4
statx(4, "", AT_STATX_SYNC_AS_STAT|AT_EMPTY_PATH, STATX_ALL, {stx_mask=STATX_BASIC_STATS|STATX_MNT_ID, stx_attributes=0, stx_mode=S_IFREG|0444, stx_size=4096, ...}) = 0
read(4, "Battery\n", 4097)              = 8
read(4, "", 4089)                       = 0
close(4)                                = 0
openat(AT_FDCWD, "/sys/class/power_supply/axp20x-battery/scope", O_RDONLY|O_LARGEFILE|O_CLOEXEC) = -1 ENOENT (Datei oder Verzeichnis nicht gefunden)
openat(AT_FDCWD, "/sys/class/power_supply/axp20x-battery/manufacturer", O_RDONLY|O_LARGEFILE|O_CLOEXEC) = -1 ENOENT (Datei oder Verzeichnis nicht gefunden)
openat(AT_FDCWD, "/sys/class/power_supply/axp20x-battery/model_name", O_RDONLY|O_LARGEFILE|O_CLOEXEC) = -1 ENOENT (Datei oder Verzeichnis nicht gefunden)
openat(AT_FDCWD, "/sys/class/power_supply/axp20x-battery/serial_number", O_RDONLY|O_LARGEFILE|O_CLOEXEC) = -1 ENOENT (Datei oder Verzeichnis nicht gefunden)
openat(AT_FDCWD, "/sys/class/power_supply/axp20x-battery/technology", O_RDONLY|O_LARGEFILE|O_CLOEXEC) = -1 ENOENT (Datei oder Verzeichnis nicht gefunden)
openat(AT_FDCWD, "/sys/class/power_supply/axp20x-battery/capacity", O_RDONLY|O_LARGEFILE|O_CLOEXEC) = 4
statx(4, "", AT_STATX_SYNC_AS_STAT|AT_EMPTY_PATH, STATX_ALL, {stx_mask=STATX_BASIC_STATS|STATX_MNT_ID, stx_attributes=0, stx_mode=S_IFREG|0444, stx_size=4096, ...}) = 0
read(4, "99\n", 4097)                  = 4
read(4, "", 4093)                       = 0
close(4)                                = 0
openat(AT_FDCWD, "/sys/class/power_supply/axp20x-battery/energy_full", O_RDONLY|O_LARGEFILE|O_CLOEXEC) = -1 ENOENT (Datei oder Verzeichnis nicht gefunden)
openat(AT_FDCWD, "/sys/class/power_supply/axp20x-battery/charge_full", O_RDONLY|O_LARGEFILE|O_CLOEXEC) = -1 ENOENT (Datei oder Verzeichnis nicht gefunden)
openat(AT_FDCWD, "/sys/class/power_supply/axp20x-battery/energy_full_design", O_RDONLY|O_LARGEFILE|O_CLOEXEC) = -1 ENOENT (Datei oder Verzeichnis nicht gefunden)
openat(AT_FDCWD, "/sys/class/power_supply/axp20x-battery/charge_full_design", O_RDONLY|O_LARGEFILE|O_CLOEXEC) = -1 ENOENT (Datei oder Verzeichnis nicht gefunden)
getdents64(3, 0xa109cd8 /* 0 entries */, 32768) = 0
close(3)                                = 0
write(2, "\33[0m", 4)                   = 4
write(2, "\33[31m", 5)                  = 5
openat(AT_FDCWD, "/etc/localtime", O_RDONLY|O_CLOEXEC) = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=2228, ...}) = 0
fstat64(3, {st_mode=S_IFREG|0644, st_size=2228, ...}) = 0
read(3, "TZif2\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\7\0\0\0\7\0\0\0\0"..., 4096) = 2228
_llseek(3, -1410, [818], SEEK_CUR)      = 0
read(3, "TZif2\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\7\0\0\0\7\0\0\0\0"..., 4096) = 1410
close(3)                                = 0
write(2, "2023-02-19T14:56:03+01:00 - ERRO"..., 842023-02-19T14:56:03+01:00 - ERROR - Unable to find any batteries in system, exiting
) = 84
write(2, "\33[0m", 4)                   = 4
write(2, "Error: ", 7Error: )                  = 7
write(2, "NoBatteries", 11NoBatteries)             = 11
write(2, "\n", 1
)                       = 1