FAQ

Q1: cmdq 问题

log如下：

MDrvCmdqWriteCommandMaskMulti cmdq buffer isn't available(0)
MDrvCmdqWriteCommandMaskMulti cmdq buffer isn't available(0)
[CMDQ]cmdq(1) ERR: WAIT_TRIG_TIMEOUT (0x00000400)
[CMDQ]Cmd data = 0x0000 : 0x0000 : 0x0000 : 0x0000 
[CMDQ]Cmd:NULL, dbg:0, adr:000000, dat:0000, mask:0000 
[CMDQ]Unknown command
[CMDQ] Parsing from Debug Log
[CMDQ]Wait command timeout. Trigger_Bus Bit [0] Event [ISP_TRIG]
[CMDQ]dram(s, e, w, r)=(0x2ef20000, 0x2ef2fff0, 0x2ef24338, 0x2ef24340) sram(w,r)=(052,008)
SensorFrameDoneISR, line:4126 error!
SensorFrameDoneISR, line:4126 error!

解决方案：系统运行后，输入命令：

echo encmdq 1 0 0 > /proc/vpe/vpe_debug

然后运行应用。

Q2: 命令设置 sensor mirror flip

echo setmirrorflip 0 0 0 > /proc/mi_modules/mi_sensor/mi_sensor0

Q3: 1路Amic 8000采样率录音功能

./prog_audio_all_test_case -I -t 15 -o /tmp -d 0 -m 0 -c 1 -v 16 -s 8000

具体参数说明参考audio_all_test_case 下的README.txt。

Q4: dump disp input

echo dumpframe layerid portid path > /proc/mi_modules/mi_disp/mi_disp0

例如：

echo dumpframe 0 0 /data > /proc/mi_modules/mi_disp/mi_disp0

Q5: dump fb

dd if=/dev/fb0 of=/data/test

Q6: vif不支持格式修改，只能按照sensor的格式设置vif pixel

如st_main_uvc.cpp中的 ePixFormat = (MI_SYS_PixelFormat_e)RGB_BAYER_PIXEL(stSnrPlane0Info.ePixPrecision, stSnrPlane0Info.eBayerId);

Q7: vpe dump

echo dumptaskfile [chnid, Passid, Cnt, /path/, bOnlyDumpResChange, bdumpport] > /proc/mi_modules/mi_vpe/mi_vpe0

bOnlyDumpResChange 和 bdumpport非必须项
chnid ,passid 在proc信息下均可查看

例如 echo dumptaskfile 0 0 5 0 0 /mnt > /proc/mi_modules/mi_vpe/mi_vpe0 表示 channel=0 port 0 passid =0 cnt = 5

Q8: 查看MI内存信息

sys启动后，cat /proc/mi_modules/mi_sys_mma/mma_heap_name0 可以查看

Q9: param:dump_out $channel_num $frame_num $dump_path

举例：

h264/h265:echo dump_out 0 100 /mnt > /proc/mi_modules/mi_venc/mi_venc0

Q10: 获取带宽占用情况

echo all > /sys/devices/system/miu/miu0/monitor_client_enable cat /sys/devices/system/miu/miu0/measure_all

Q11: dump divp

echo dumpframe channel path > /proc/mi_modules/mi_divp/mi_divp0

如dump divp channel 2到/customer目录下：

echo dumpframe 2 /customer > /proc/mi_modules/mi_divp/mi_divp0

Q12: dump vif信息

echo dump 0 0 /mnt > /proc/mi_modules/mi_vif/mi_vif0

Q13: reset isp

cat /sys/class/mstar/isp0/isp_reset

1: ISP All reset

2: ISP channel 1 reset

4: ISP 3DNR reset

8: ISP ROT reset

Q14: dump音频

export MI_AI_DUMP_PCM_ENABLE=1 export MI_AI_DUMP_PATH=xxx //xxx自己填路径

export MI_AI_DUMP_PATH=xxx export MI_AO_DUMP_PATH=xxx //设置Dump路径

export MI_AI_DUMP_AEC_ENABLE=1 export MI_AI_DUMP_VQE_ENABLE=1 export MI_AO_DUMP_VQE_ENABLE=1

Q15: 停止和恢复更新disp buffer的数据

disp drop frame不更新buffer，只去读取同一张，不更新disp buffer

echo stopgetbuff [layerid] [portid] on > /proc/mi_modules/mi_disp/mi_disp0

比如echo stopgetbuff 0 0 on > /proc/mi_modules/mi_disp/mi_disp0

恢复echo stopgetbuff 0 0 off > /proc/mi_modules/mi_disp/mi_disp0

Q16: mi中的kmsg log打开

比如echo debug 1 > /proc/mi_modules/mi_disp/mi_disp0