【米爾MYD-J1028X開發(fā)板試用體驗(yàn)】初體驗(yàn)

本文來源電子發(fā)燒友社區(qū)，作者：李先生， 帖子地址：https://bbs.elecfans.com/jishu_2300787_1_1.html


開箱

開箱過程就略了,直接看板子。板子比較大,酷黑風(fēng)格,一看做工就不錯(cuò),該有的接口防護(hù)設(shè)計(jì)都有,完全按照工業(yè)級(jí)產(chǎn)品標(biāo)準(zhǔn)設(shè)計(jì),大大的散熱器很突出,5個(gè)網(wǎng)口也很有特色。

板載資源

核心板

· 基于NXP LS1028A處理器，雙核 Cortex?-A72，主頻1.5GHz;

· 支持6個(gè)千兆網(wǎng)口，且都支持TSN（開發(fā)板支持5個(gè)千兆工業(yè)網(wǎng)口）；

· 具備PCIe3.0、SATA3.0、USB3.0、CAN-FD等高速總線接口;

· 支持DP顯示，可支持DP1.3和eDP1.4，顯示分辨率高達(dá)4K@60FPS;

· 工業(yè)級(jí)-40℃ - +85℃，金手指314PIN;

底板

串口登錄

USB線接J22: DEBUG UART。

接好電源J1,S1電源開關(guān)打到ON,開發(fā)板上電。

這里串口終端使用SecureCRT。

查看設(shè)備管理器串口號(hào),使用SecureCRT連接串口,115200-8-N-1。

輸入用戶名root

密碼root登錄

NXP LSDK 2012 main

localhost login: root

Password:

Last login: Fri Jan  1 00:00:05 UTC 2066 on tty7

Welcome to NXP LSDK 2012 main (GNU/Linux 5.4.47-g20182b961 aarch64)

* Support:        https://www.nxp.com/lsdk
* Documentation:  https://lsdk.github.io/document
* Licensing:      https://lsdk.github.io/eula

The programs included with the NXP LSDK are free software, the exact distribution

terms of some programs are described in the individual files in /usr/share/doc.

NXP LSDK comes with ABSOLUTELY NO WARRANTY, to the extent permitted by applicable law.

By using this LSDK, you indicate that you accept the terms of the Agreement in

the link above and you acknowledge that you have the authority, for yourself

or on behalf of your company, to bind your company to these terms.

root@localhost:~#

體驗(yàn)

CPU信息

輸入cat /proc/cpuinfo回車查看CPU信息,可以看到雙核信息。

root@localhost:~# cat /proc/cpuinfo

processor       : 0

BogoMIPS        : 50.00

Features        : fp asimd evtstrm crc32 cpuid

CPU implementer : 0x41

CPU architecture: 8

CPU variant     : 0x0

CPU part        : 0xd08

CPU revision    : 3

processor       : 1

BogoMIPS        : 50.00

Features        : fp asimd evtstrm crc32 cpuid

CPU implementer : 0x41

CPU architecture: 8

CPU variant     : 0x0

CPU part        : 0xd08

CPU revision    : 3

CPU使用率

輸入top回車查看CPU使用率

top - 00:39:02 up 39 min,  1 user,  load average: 0.11, 0.13, 0.09

Tasks: 104 total,   1 running,  55 sleeping,   0 stopped,   0 zombie

%Cpu(s):  0.0 us,  0.5 sy,  0.0 ni, 99.0 id,  0.2 wa,  0.3 hi,  0.0 si,  0.0 st

KiB Mem :  1955912 total,  1608636 free,   176168 used,   171108 buff/cache

KiB Swap:        0 total,        0 free,        0 used.  1710876 avail Mem

PID USER      PR  NI    VIRT    RES    SHR S  %CPU %MEM     TIME+ COMMAND

141 root       0 -20       0      0      0 I   0.3  0.0   0:00.16 kworker/1:+

172 root      19  -1   26044   7140   6556 S   0.3  0.4   0:00.26 systemd-jo+

492 root      20   0  779972  34964  17112 S   0.3  1.8   0:05.34 containerd

763 root      20   0       0      0      0 I   0.3  0.0   0:00.05 kworker/1:+

766 root      20   0    6032   2984   2404 R   0.3  0.2   0:00.05 top


1 root      20   0   13384   7848   5724 S   0.0  0.4   0:04.89 systemd

2 root      20   0       0      0      0 S   0.0  0.0   0:00.00 kthreadd

3 root       0 -20       0      0      0 I   0.0  0.0   0:00.00 rcu_gp

4 root       0 -20       0      0      0 I   0.0  0.0   0:00.00 rcu_par_gp

7 root      20   0       0      0      0 I   0.0  0.0   0:00.47 kworker/u4+

8 root       0 -20       0      0      0 I   0.0  0.0   0:00.00 mm_percpu_+

9 root      20   0       0      0      0 S   0.0  0.0   0:00.03 ksoftirqd/0

10 root      20   0       0      0      0 I   0.0  0.0   0:00.05 rcu_preempt

11 root      rt   0       0      0      0 S   0.0  0.0   0:00.00 migration/0

12 root      20   0       0      0      0 S   0.0  0.0   0:00.00 cpuhp/0

13 root      20   0       0      0      0 S   0.0  0.0   0:00.00 cpuhp/1

14 root      rt   0       0      0      0 S   0.0  0.0   0:00.00 migration/1

CPU溫度

輸入cat /sys/class/thermal/thermal_zone0/temp

回車查看CPU溫度

這里看到只有42°，溫度不高。

root@localhost:~# cat /sys/class/thermal/thermal_zone0/temp

42000

CPU壓力測(cè)試

輸入echo "scale=5000; 4*a(1)" | bc -l -q &

回車,后臺(tái)計(jì)算圓周率到小數(shù)點(diǎn)后5000位。

運(yùn)算過程中輸入top回車查看cpu使用率達(dá)到了100%

PID USER      PR  NI    VIRT    RES    SHR S  %CPU %MEM     TIME+ COMMAND

782 root      20   0    2572   1588   1336 R 100.0  0.1   0:07.74 bc

大概45秒運(yùn)算完，這也可以用于定性體現(xiàn)CPU性能。

root@localhost:~# 3.141592653589793238462643383279502884197169399375105820974944592307

81640628620899862803482534211706798214808651328230664709384460955058
22317253594081284811174502841027019385211055596446229489549303819644
28810975665933446128475648233786783165271201909145648566923460348610
45432664821339360726024914127372458700660631558817488152092096282925
40917153643678925903600113305305488204665213841469519415116094330572
70365759591953092186117381932611793105118548074462379962749567351885
75272489122793818301194912983367336244065664308602139494639522473719
07021798609437027705392171762931767523846748184676694051320005681271
45263560827785771342757789609173637178721468440901224953430146549585
37105079227968925892354201995611212902196086403441815981362977477130
99605187072113499999983729780499510597317328160963185950244594553469
08302642522308253344685035261931188171010003137838752886587533208381
42061717766914730359825349042875546873115956286388235378759375195778
18577805321712268066130019278766111959092164201989380952572010654858
63278865936153381827968230301952035301852968995773622599413891249721
......

可以將5000改為50000持續(xù)測(cè)試,查看溫度變化

穩(wěn)定在了46°左右

root@localhost:~# cat /sys/class/thermal/thermal_zone0/temp

46000

溫度測(cè)量感覺有點(diǎn)不太準(zhǔn)備,用手觸摸散熱器,感覺明顯升溫有點(diǎn)燙了,應(yīng)該不止46°了。

內(nèi)存信息

輸入cat /proc/meminfo

回車查看內(nèi)存信息

root@localhost:~# cat /proc/meminfo

MemTotal:        1955912 kB

MemFree:         1604108 kB

MemAvailable:    1710244 kB

Buffers:           10164 kB

Cached:           151856 kB

SwapCached:            0 kB

Active:           110576 kB

Inactive:         133768 kB

Active(anon):      82708 kB

Inactive(anon):      164 kB

Active(file):      27868 kB

Inactive(file):   133604 kB

Unevictable:           0 kB

Mlocked:               0 kB

SwapTotal:             0 kB

SwapFree:              0 kB

Dirty:                 0 kB

Writeback:             0 kB

AnonPages:         79628 kB

Mapped:            75472 kB

Shmem:               556 kB

KReclaimable:      13232 kB

Slab:              38300 kB

SReclaimable:      13232 kB

SUnreclaim:        25068 kB

KernelStack:        2336 kB

PageTables:         1396 kB

NFS_Unstable:          0 kB

Bounce:                0 kB

WritebackTmp:          0 kB

CommitLimit:      977956 kB

Committed_AS:     445708 kB

VmallocTotal:   135290159040 kB

VmallocUsed:        8004 kB

VmallocChunk:          0 kB

Percpu:             1688 kB

HardwareCorrupted:     0 kB

AnonHugePages:      8192 kB

ShmemHugePages:        0 kB

ShmemPmdMapped:        0 kB

FileHugePages:         0 kB

FilePmdMapped:         0 kB

CmaTotal:         262144 kB

CmaFree:          211616 kB

HugePages_Total:       0

HugePages_Free:        0

HugePages_Rsvd:        0

HugePages_Surp:        0

Hugepagesize:       2048 kB

Hugetlb:               0 kB

內(nèi)存使用率

輸入#free -m回車查看內(nèi)存使用率

root@localhost:~# free -m


total        used        free      shared  buff/cache   available

Mem:           1910         172        1566           0         171        1669

Swap:             0           0           0

內(nèi)存壓力測(cè)試

輸入 memtester 1024M 1

回車

root@localhost:~# # memtester 1024M 1

root@localhost:~# memtester 1024M 1

memtester version 4.3.0 (64-bit)

Copyright (C) 2001-2012 Charles Cazabon.

Licensed under the GNU General Public License version 2 (only).

pagesize is 4096

pagesizemask is 0xfffffffffffff000

want 1024MB (1073741824 bytes)

got  1024MB (1073741824 bytes), trying mlock ...locked.

Loop 1/1:

Stuck Address       : ok

Random Value        : ok

Compare XOR         : ok

Compare SUB         : ok

Compare MUL         : ok

Compare DIV         : ok

Compare OR          : ok

Compare AND         : ok

Sequential Increment: ok

Solid Bits          : ok

Block Sequential    : ok

Checkerboard        : ok

Bit Spread          : ok

Bit Flip            : ok

Walking Ones        : ok

Walking Zeroes      : ok

8-bit Writes        : ok

16-bit Writes       : ok

Done.

EMMC

輸入fdisk -l回車查看emmc信息

root@localhost:~# fdisk -l

Disk /dev/ram0: 4 MiB, 4194304 bytes, 8192 sectors

Units: sectors of 1 * 512 = 512 bytes

Sector size (logical/physical): 512 bytes / 4096 bytes

I/O size (minimum/optimal): 4096 bytes / 4096 bytes

Disk /dev/ram1: 4 MiB, 4194304 bytes, 8192 sectors

Units: sectors of 1 * 512 = 512 bytes

Sector size (logical/physical): 512 bytes / 4096 bytes

I/O size (minimum/optimal): 4096 bytes / 4096 bytes

......

Disk /dev/mmcblk1: 7.3 GiB, 7818182656 bytes, 15269888 sectors

Units: sectors of 1 * 512 = 512 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I/O size (minimum/optimal): 512 bytes / 512 bytes

Disklabel type: dos

Disk identifier: 0xf0c623ad

Device         Boot   Start      End  Sectors  Size Id Type

/dev/mmcblk1p1       139264   401407   262144  128M 83 Linux

/dev/mmcblk1p2       403456  4597759  4194304    2G 83 Linux

/dev/mmcblk1p3      4599808  4730879   131072   64M 83 Linux

/dev/mmcblk1p4      4732928 15269887 10536960    5G 83 Linux

輸入df -h

回車查看掛載信息

root@localhost:~# df -h

Filesystem      Size  Used Avail Use% Mounted on

/dev/root       4.9G  2.3G  2.4G  50% /

devtmpfs        825M     0  825M   0% /dev

tmpfs           956M     0  956M   0% /dev/shm

tmpfs           956M  556K  955M   1% /run

tmpfs           5.0M     0  5.0M   0% /run/lock

tmpfs           956M     0  956M   0% /sys/fs/cgroup

/dev/mmcblk1p2  2.0G  658M  1.2G  36% /boot

tmpfs           192M     0  192M   0% /run/user/0

輸入time dd if=/dev/zero of=tempfile bs=1M count=100 conv=fdatasync

測(cè)試寫文件速度,大概27.9MB/S

coot@localhost:~# time dd if=/dev/zero of=tempfile bs=1M count=100 conv=fdatasync

100+0 records in

100+0 records out

104857600 bytes (105 MB, 100 MiB) copied, 3.75256 s, 27.9 MB/s

real    0m3.755s

user    0m0.001s

sys     0m0.300s

輸入

time dd if=tempfile of=/dev/null bs=1M count=100 iflag=direct,nonblock

回車測(cè)試讀速度193MB/S

nonblockalhost:~# time dd if=tempfile of=/dev/null bs=1M count=100 iflag=direct,n

100+0 records in

100+0 records out

104857600 bytes (105 MB, 100 MiB) copied, 0.542257 s, 193 MB/s

real    0m0.544s

user    0m0.000s

sys     0m0.014s

RTC

輸入ls -l /dev/rtc* 回車查看設(shè)備

輸入cat /sys/class/rtc/rtc0/name回車查看名字

root@localhost:~# ls -l /dev/rtc*

lrwxrwxrwx 1 root root      4 Jan  1 00:00 /dev/rtc -> rtc0

crw------- 1 root root 251, 0 Jan  1 00:00 /dev/rtc0

crw------- 1 root root 251, 1 Jan  1 00:00 /dev/rtc1

root@localhost:~# cat /sys/class/rtc/rtc0/name

rtc-rx8025t 1-0032

輸入date查看當(dāng)前時(shí)間

輸入date -s "2022-8-19 22:53:30"設(shè)置時(shí)間

輸入date查看設(shè)置后的時(shí)間

輸入hwclock -w將時(shí)間寫入rtc

輸入hwclock -r加載rtc的時(shí)間

不斷電按住RST按鍵一段時(shí)間,再放開重啟,看保持復(fù)位這段時(shí)間時(shí)間是否在繼續(xù)走。

看到時(shí)間是保持走動(dòng)的。

root@localhost:~# date

Fri Aug 19 23:00:53 UTC 2022

root@localhost:~# date -s "2022-9-19 22:53:30"

Mon Sep 19 22:53:30 UTC 2022

root@localhost:~# date

Mon Sep 19 22:53:31 UTC 2022

root@localhost:~# hwclock -w

root@localhost:~# hwclock -r

2022-09-19 22:53:39.978946+0000

......

保持復(fù)位一段時(shí)間,

重啟

......

root@localhost:~# date

Mon Sep 19 22:55:01 UTC 2022

hwclock -s

可以讓RTC和系統(tǒng)時(shí)間保持同步。

看門狗

輸入cat /sys/class/watchdog/watchdog0/device/uevent查看看門狗信息

root@localhost:~# cat /sys/class/watchdog/watchdog0/device/uevent

DRIVER=sp805-wdt

OF_NAME=watchdog

OF_FULLNAME=/soc/watchdog@c000000

OF_COMPATIBLE_0=arm,sp805

OF_COMPATIBLE_1=arm,primecell

OF_COMPATIBLE_N=2

AMBA_ID=00141805

MODALIAS=amba:d00141805

echo V > /dev/watchdog關(guān)閉看門狗

總結(jié)

板子的性能非常強(qiáng)悍,資源接口也非常豐富,做工也一如既往的優(yōu)秀,不僅僅是一個(gè)開發(fā)板,而且就是一個(gè)工業(yè)及標(biāo)準(zhǔn)的產(chǎn)品,該有的防護(hù)設(shè)計(jì)都有,可以直接用于二次開發(fā)。資料比較詳細(xì),簡單體驗(yàn)了下相關(guān)的測(cè)試都非常nice,后面再針對(duì)性的對(duì)各模塊進(jìn)行測(cè)試。

資源非常豐富,且開源,一如既往的好評(píng),先把所有資料下載,下一次開始搭建開發(fā)環(huán)境測(cè)試。

資料下載

http://down.myir-tech.com/MYD-J1028X/