hardware

问题 I am building a self driving RC car. I have 100s of images taken from pi camera and each one of them are named as direction.jpg . How do I convert these images into single .npz file so that I can train a Neural net. The code below is a simple python script that enables my car to move on key press and snaps photos every second. #!/usr/bin/env python """Interactive control for the car""" import time import io import pygame import pygame.font import picamera import configuration import helpers

问题 I'd like to ask why the BLT instruction is not a part of MIPS ISA. Instead they actually make it a pseudo-instruction for assembly programmers. I just couldn't recognize the difference between BLT and BLTZ (which is a part of MIPS ISA) from hardware implementation point of view. By the way the book "Computer Organization and Design" says : Heeding von Neumann's warning about the simplicity of the "equipment" the MIPS architecture doesn't include branch on less than because it's too

问题 I'd like to ask why the BLT instruction is not a part of MIPS ISA. Instead they actually make it a pseudo-instruction for assembly programmers. I just couldn't recognize the difference between BLT and BLTZ (which is a part of MIPS ISA) from hardware implementation point of view. By the way the book "Computer Organization and Design" says : Heeding von Neumann's warning about the simplicity of the "equipment" the MIPS architecture doesn't include branch on less than because it's too

问题 how can i get android device hardware info like CPU arch, speed, neon, GPU , name, manufacturer, RAM size. i hope there is a way to do that natively using ndk , but if it is possible only by java code than how to do that. 回答1: You need to user Build class for your requirement. The Build class will provide you information like Android Version, Display, Manufacture etc. Build.BOARD Build.BRAND Build.CPU_ABI Build.DEVICE Build.DISPLAY Build.HOST Build.ID Build.MANUFACTURER Build.MODEL Build

问题 Our application includes a screen capture capability. Some applications use overlay surfaces to display video so we included an option to disable hardware acceleration in order to force those applications into software rendering mode so that we can screen cap them. This worked fine under Windows XP. However, under Windows 7 it appears, from my research, that very few display drivers support the ability to disable hardware acceleration since the DWM uses DirectX9 rendering. On those sysetms

问题 I'm modifying ConnectBot to take advantage of hardware keyboards and I need to capture all Ctrl-? presses. I've disabled all of the alphabetic menu shortcuts (such as Ctrl-C for copy) but the key presses still don't seem to be being received by the onKey event. I'm fairly new to Android development (literally started today to fix ConnectBot to handle hardware keyboards) and quick Google searching doesn't seem to turn up anything about capturing Ctrl-? key presses. How do I tell Android to

问题 I am trying to receive SMS messages with a Huawei Mobile Connect, Model: E170 device through hyper terminal but can't. I used the below commands to initialize the modem: AT+CMGF=1 AT+CNMI=2,2,0,0,0 (But this gives me this error: +CMS ERROR: 303) This same commands working on my nokia N70, 6630 and many other nokia models i can't remember. I know the modem can receive and send SMS messages, but how do i do it? 回答1: Below worked for me in Huawe E153. at+cmgf=1 //Set text format at+csmp=49,167 /

问题 When I run "cat /proc/interrupts", I can get the following: CPU0 CPU1 0: 253 1878 IO-APIC-edge timer 1: 3 0 IO-APIC-edge i8042 7: 1 0 IO-APIC-edge parport0 8: 0 1 IO-APIC-edge rtc0 9: 0 0 IO-APIC-fasteoi acpi 12: 1 3 IO-APIC-edge i8042 16: 681584 60 IO-APIC-fasteoi uhci_hcd:usb3, nvidia 17: 0 0 IO-APIC-fasteoi uhci_hcd:usb4, uhci_hcd:usb7 18: 0 0 IO-APIC-fasteoi uhci_hcd:usb8 22: 2 1 IO-APIC-fasteoi ehci_hcd:usb1, uhci_hcd:usb5 23: 17 17 IO-APIC-fasteoi ehci_hcd:usb2, uhci_hcd:usb6 44: 146232

问题 Under the total store order(TSO) memory consistency model, a x86 cpu will have a write buffer to buffer write requests and can serve reordered read requests from the write buffer. And it says that the write requests in the write buffer will exit and be issued toward cache hierarchy in FIFO order, which is the same as program order. I am curious about: To serve the write requests issued from the write buffer, does L1 cache controller handle the write requests, finish the cache coherence of the

问题 I have an android application which kind of like a home screen of the build-in screen on android phone. I can list all the available applications and run them. One thing I don't know how to do is when user run an application from my apps, my application can trigger the hardware menu button to show the current application menus. Is this possible ? If not, what about doing it if the device was rooted. 回答1: In activity use override onKeyDown like this : @Override public boolean onKeyDown(int