【米尔MYD-YA15XC-T开发板试用体验】最简练的Linux开发板

MYC-YA15XC 核心板基于 STM32MP1 系列处理器研制工业级开发板，-40~85度工作范围，主频高达650Mhz完美继承了该处理器高性能、低功耗的优点，且拥有良好的软件开发环境，Cortex-A7 内核支持开源操作系统Linux，Cortex-M4 内核完美沿用现有的 STM32 MCU 生态系统，有助于开发者轻松实现各类开发应用。MYC-YA15XC-T 同时具有丰富的接口资源。MYC-YA15XC-T 核心板采用邮票孔封装，标配 STM32MP151 处理器，，外设接口丰富，拥有 USB2.0、Ethernet、UART、CAN、LCD、DCMI、ADC等常用外设接口，便于客户灵活定制。

MYD-YA15XC-T开发板把MYC-YA15XC 核心板全部PIN引出来，麻雀虽小五脏俱全。网口，USB，type-c,接口。

上图：

电源，欧美日接口都有，米尔看来要进军国际化了，YYDS！

核心板：

米尔核心板十年供货保证，只要ST不断种，米尔会持续供货。解决开发者和客户后顾之忧，值得信赖！

【米尔MYD-YA15XC-T开发板试用体验】功能测试

开发板接入5V电源，USB Type C(debug)口连接PC USB。 使用SecureCRT进行调试是一款终端仿真程序，支持SSH（SSH1和SSH2）以及Telnet和rlogin协议。SecureCRT用于连接运行包括Windows、UNIX和VMS在内的远程系统的理想工具。

1，cat /proc/cpuinfo 查看系统cpu信息

root@myir-ya151c-t:~# cat /proc/cpuinfoprocessor : 0model name : ARMv7 Processor rev 5 (v7l)BogoMIPS : 48.00Features : half thumb fastmult vfp edsp thumbee neon vfpv3 tls vfpv4 idiva idivt vfpd32 lpae evtstrmCPU implementer : 0x41CPU architecture: 7CPU variant : 0x0CPU part : 0xc07CPU revision : 5

Hardware : STM32 (Device Tree Support)Revision : 0000Serial : 003500283239510837383434root@myir-ya151c-t:~#

root@myir-ya151c-t:~# lscpuArchitecture: armv7lByte Order: Little EndianCPU(s): 1On-line CPU(s) list: 0Thread(s) per core: 1Core(s) per socket: 1Socket(s): 1Vendor ID: ARMModel: 5Model name: Cortex-A7Stepping: r0p5CPU max MHz: 650.0000CPU min MHz: 650.0000BogoMIPS: 48.00Flags: half thumb fastmult vfp edsp thumbee neon vfpv3 tls vfpv4 idiva idivt vfpd32 lpae evtstrm

测试内存root@myir-ya151c-t:~# lsblkNAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINTmtdblock0 31:0 0 2M 0 diskmtdblock1 31:1 0 2M 0 diskmtdblock2 31:2 0 2M 0 diskmtdblock3 31:3 0 250M 0 diskroot@myir-ya151c-t:~#

查看开机信息：

root@myir-ya151c-t:~# dmesg | grep -i 'cpu'[ 0.000000] Booting Linux on physical CPU 0x0[ 0.000000] CPU: ARMv7 Processor [410fc075] revision 5 (ARMv7), cr=10c5387d[ 0.000000] CPU: div instructions available: patching division code[ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache[ 0.000000] percpu: Embedded 20 pages/cpu s50124 r8192 d23604 u81920[ 0.000000] pcpu-alloc: s50124 r8192 d23604 u81920 alloc=20*4096[ 0.000000] pcpu-alloc: [0] 0[ 0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=1, Nodes=1[ 0.000000] rcu: RCU restricting CPUs from NR_CPUS=2 to nr_cpu_ids=1.[ 0.000000] rcu: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=1[ 0.003406] CPU: Testing write buffer coherency: ok[ 0.003932] /cpus/cpu@0 missing clock-frequency property[ 0.003956] CPU0: thread -1, cpu 0, socket 0, mpidr 80000000[ 0.105575] smp: Bringing up secondary CPUs ...[ 0.105603] smp: Brought up 1 node, 1 CPU[ 0.105625] CPU: All CPU(s) started in SVC mode.[ 1.238051] stm32-cpufreq stm32-cpufreq: FaiLED to get chip info: -517[ 1.244037] ledtrig-cpu: registered to indicate activity on CPUs[ 1.287444] ThumbEE CPU extension supported.[ 1.364948] debugfs: Directory 'cpu0' with parent 'opp' already present![ 1.514124] debugfs: Directory 'cpu0' with parent 'opp' already present!root@myir-ya151c-t:~#

查看分区情况：

root@myir-ya151c-t:~# fdisk -lDisk /dev/ram0: 64 MiB, 67108864 bytes, 131072 sectorsUnits: sectors of 1 * 512 = 512 bytesSector size (logical/physical): 512 bytes / 4096 bytesI/O size (minimum/optimal): 4096 bytes / 4096 bytes

Disk /dev/ram1: 64 MiB, 67108864 bytes, 131072 sectorsUnits: sectors of 1 * 512 = 512 bytesSector size (logical/physical): 512 bytes / 4096 bytesI/O size (minimum/optimal): 4096 bytes / 4096 bytes

Disk /dev/ram2: 64 MiB, 67108864 bytes, 131072 sectorsUnits: sectors of 1 * 512 = 512 bytesSector size (logical/physical): 512 bytes / 4096 bytesI/O size (minimum/optimal): 4096 bytes / 4096 bytes

Disk /dev/ram3: 64 MiB, 67108864 bytes, 131072 sectorsUnits: sectors of 1 * 512 = 512 bytesSector size (logical/physical): 512 bytes / 4096 bytesI/O size (minimum/optimal): 4096 bytes / 4096 bytes

Disk /dev/ram4: 64 MiB, 67108864 bytes, 131072 sectorsUnits: sectors of 1 * 512 = 512 bytesSector size (logical/physical): 512 bytes / 4096 bytesI/O size (minimum/optimal): 4096 bytes / 4096 bytes

Disk /dev/ram5: 64 MiB, 67108864 bytes, 131072 sectorsUnits: sectors of 1 * 512 = 512 bytesSector size (logical/physical): 512 bytes / 4096 bytesI/O size (minimum/optimal): 4096 bytes / 4096 bytes

Disk /dev/ram6: 64 MiB, 67108864 bytes, 131072 sectorsUnits: sectors of 1 * 512 = 512 bytesSector size (logical/physical): 512 bytes / 4096 bytesI/O size (minimum/optimal): 4096 bytes / 4096 bytes

Disk /dev/ram7: 64 MiB, 67108864 bytes, 131072 sectorsUnits: sectors of 1 * 512 = 512 bytesSector size (logical/physical): 512 bytes / 4096 bytesI/O size (minimum/optimal): 4096 bytes / 4096 bytes

Disk /dev/ram8: 64 MiB, 67108864 bytes, 131072 sectorsUnits: sectors of 1 * 512 = 512 bytesSector size (logical/physical): 512 bytes / 4096 bytesI/O size (minimum/optimal): 4096 bytes / 4096 bytes

Disk /dev/ram9: 64 MiB, 67108864 bytes, 131072 sectorsUnits: sectors of 1 * 512 = 512 bytesSector size (logical/physical): 512 bytes / 4096 bytesI/O size (minimum/optimal): 4096 bytes / 4096 bytes

Disk /dev/ram10: 64 MiB, 67108864 bytes, 131072 sectorsUnits: sectors of 1 * 512 = 512 bytesSector size (logical/physical): 512 bytes / 4096 bytesI/O size (minimum/optimal): 4096 bytes / 4096 bytes

Disk /dev/ram11: 64 MiB, 67108864 bytes, 131072 sectorsUnits: sectors of 1 * 512 = 512 bytesSector size (logical/physical): 512 bytes / 4096 bytesI/O size (minimum/optimal): 4096 bytes / 4096 bytes

Disk /dev/ram12: 64 MiB, 67108864 bytes, 131072 sectorsUnits: sectors of 1 * 512 = 512 bytesSector size (logical/physical): 512 bytes / 4096 bytesI/O size (minimum/optimal): 4096 bytes / 4096 bytes

Disk /dev/ram13: 64 MiB, 67108864 bytes, 131072 sectorsUnits: sectors of 1 * 512 = 512 bytesSector size (logical/physical): 512 bytes / 4096 bytesI/O size (minimum/optimal): 4096 bytes / 4096 bytes

Disk /dev/ram14: 64 MiB, 67108864 bytes, 131072 sectorsUnits: sectors of 1 * 512 = 512 bytesSector size (logical/physical): 512 bytes / 4096 bytesI/O size (minimum/optimal): 4096 bytes / 4096 bytes

Disk /dev/ram15: 64 MiB, 67108864 bytes, 131072 sectorsUnits: sectors of 1 * 512 = 512 bytesSector size (logical/physical): 512 bytes / 4096 bytesI/O size (minimum/optimal): 4096 bytes / 4096 bytes

Disk /dev/mtdblock0: 2 MiB, 2097152 bytes, 4096 sectorsUnits: sectors of 1 * 512 = 512 bytesSector size (logical/physical): 512 bytes / 512 bytesI/O size (minimum/optimal): 512 bytes / 512 bytes

Disk /dev/mtdblock1: 2 MiB, 2097152 bytes, 4096 sectorsUnits: sectors of 1 * 512 = 512 bytesSector size (logical/physical): 512 bytes / 512 bytesI/O size (minimum/optimal): 512 bytes / 512 bytes

Disk /dev/mtdblock2: 2 MiB, 2097152 bytes, 4096 sectorsUnits: sectors of 1 * 512 = 512 bytesSector size (logical/physical): 512 bytes / 512 bytesI/O size (minimum/optimal): 512 bytes / 512 bytes

Disk /dev/mtdblock3: 250 MiB, 262144000 bytes, 512000 sectorsUnits: sectors of 1 * 512 = 512 bytesSector size (logical/physical): 512 bytes / 512 bytesI/O size (minimum/optimal): 512 bytes / 512 bytesroot@myir-ya151c-t:~#

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root@myir-ya151c-t:~# df -hFilesystem Size Used Avail Use% Mounted onubi0:rootfs 201M 177M 25M 89% /devtmpfs 54M 0 54M 0% /devtmpfs 118M 64K 118M 1% /dev/shmtmpfs 118M 8.8M 110M 8% /runtmpfs 118M 0 118M 0% /sys/fs/cgrouptmpfs 118M 0 118M 0% /tmp/dev/ubi0_2 15M 11M 3.4M 77% /boottmpfs 118M 136K 118M 1% /var/volatiletmpfs 24M 0 24M 0% /run/user/0root@myir-ya151c-t:~#

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内存信息;

root@myir-ya151c-t:~# cat /proc/meminfoMemTotal: 241392 kBMemFree: 127468 kBMemAvailable: 170768 kBBuffers: 0 kBCached: 46952 kBSwapCached: 0 kBActive: 37340 kBInactive: 38644 kBActive(anon): 29648 kBInactive(anon): 8500 kBActive(file): 7692 kBInactive(file): 30144 kBUnevictable: 0 kBMlocked: 0 kBHighTotal: 0 kBHighFree: 0 kBLowTotal: 241392 kBLowFree: 127468 kBSwapTotal: 0 kBSwapFree: 0 kBDirty: 0 kBWriteback: 0 kBAnonPages: 29044 kBMapped: 13112 kBShmem: 9116 kBKReclaimable: 11248 kBSlab: 26792 kBSReclaimable: 11248 kBSUnreclaim: 15544 kBKernelStack: 936 kBPageTables: 988 kBNFS_Unstable: 0 kBBounce: 0 kBWritebackTmp: 0 kBCommitLimit: 120696 kBCommitted_AS: 309880 kBVmallocTotal: 770048 kBVmallocUsed: 4820 kBVmallocChunk: 0 kBPercpu: 188 kBCmaTotal: 131072 kBCmaFree: 115800 kBroot@myir-ya151c-t:~#

查看各设备的中断请求(IRQ):

查看所有启动时检测到的硬件信息：