Recent Posts
...
So with "loglevel=7" , you get messages for log levels 0 through 6. ...
... According to https://www.kernel.org/doc/html/latest/admin-guide/kernel-parameters.html the highest loglevel is 7. ...Yes, you are correct. The kernel.org documentation states:
Welcome
FAQ
Downloads
Wiki
loglevel= All Kernel Messages with a loglevel smaller than the
console loglevel will be printed to the console. It can
also be changed with klogd or other programs. The
loglevels are defined as follows:
0 (KERN_EMERG) system is unusable
1 (KERN_ALERT) action must be taken immediately
2 (KERN_CRIT) critical conditions
3 (KERN_ERR) error conditions
4 (KERN_WARNING) warning conditions
5 (KERN_NOTICE) normal but significant condition
6 (KERN_INFO) informational
7 (KERN_DEBUG) debug-level messagesAll Kernel Messages with a loglevel smaller than the
console loglevel will be printed to the console.
You can also add this boot code:Code: [Select]loglevel=8
pci_bus 0000:00: resource 4 [io 0x0000-Oxffff]
pcl_bus 0000:00: resource 5 [mem 0x00000000-0xffffffff]
pci_bus 0000:01: resource 0 [ic 0x1000-0x10ff}
pci_bus 0000:01: resource 1 [io 0@x1400-0x14ff]
pcl_bas 0000:01: resource 2 [mem 0x48000000-0x4bffffff pref]
pci_bus 0000:01: researce 3 [mem 0x4c000000-0x4fffffff]
pcl_bus 0000:05: resource 0 [io 0x1800-0x18ff]
pei_bus 0000:05: resource 1 [io 0x1c00-0x1cff]
pci_bus 0000:05: resource 2 (mem 0x54000000-0x57ffffff pref]
pci_bus 0000:05: resource 3 [mem 0x58000000-0x5bffffff]
pci 0000:00:00.0: Fixup for MediaGX/Geode Slave Disconnect Boundary (0x41=0x10)
PCI: CLS 16 bytes, default 32
platform rtc_cmos: registered platform RTC device (no PNP device found)
Trying to unpack rootfs image as initramfs...
apm: BIOS version 1.2 Flags 0x07 (Driver version 1.16ac)
workingset: timestamp_bits=30 max_order=15 bucket_order=0
NFS: Registering the id_resolver key type
Key type id_resolver registered
Key type id_legacy registered
nfs4filelayout_init: NFSv4 File Layout Driver Registering...
nfs4flexfilelayout_init: NPSv4 Flexfile Layout Driver Registering...
fuse: init (API version 7.45)
cryptd: max_cpu_qlen set to 1000
random: crng init done
int start_meter(char * dev)
{ struct termios pts = { 0 }; /* termios settings on port */
int fd;
/* some things we want to set arbitrarily */
pts.c_lflag &= ~ICANON;
pts.c_lflag &= ~(ECHO | ECHOCTL | ECHONL);
pts.c_cflag |= HUPCL;
pts.c_cc[VMIN] = 1;
pts.c_cc[VTIME] = 0;
/* Standard CR/LF handling: this is a dumb terminal.
* Do no translation:
* no NL -> CR/NL mapping on output, and
* no CR -> NL mapping on input.
*/
pts.c_oflag |= ONLCR;
pts.c_iflag &= ~ICRNL;
/* set hardware flow control by default */
pts.c_cflag |= CRTSCTS;
pts.c_iflag &= ~(IXON | IXOFF | IXANY);
/* set 9600 bps speed by default */
// cfsetospeed(&pts, B9600);
// cfsetispeed(&pts, B9600);
cfsetospeed(&pts, B115200);
cfsetispeed(&pts, B115200);
temp.E_night = -1.0;
temp.E_day = -1.0;
temp.E_rnight = -1.0;
temp.E_rday = -1.0;
temp.E_power = -1.0;
temp.E_rpower = -1.0;
temp.E_id = -1.0;
temp.gaz_time_sec = -1.0;
temp.gaz_count = -1.0;
fd = open(dev, O_RDWR);
if (fd>=0)
tcsetattr(fd, TCSANOW, &pts);
return fd;
}... Speed however is not a big thing. ...Agreed. I does not appear like any of those devices would tax the USB ports.
... - the serial port reads my energy meter that spits out a data block of 500 bytes each second. ...You haven't mention the baud rate you are using and whether your