i know any gate can convert to NAND or NOR, asked many time why people always use NAND instead of NOR, no one can answer, but i found the answer now. NAND need voltage, NOR need current. 2023/07/19

Buy from here. Offical website. Steps to make it work in arduino: 3. Burn these examples To try the wifi example 2. Change the wifi ID and password, case sensitive 3. Run it and see the result in serial monitor, set the baudrate to 115200. It grab the html from outside, see the code then […] 2023/07/17

This little board is nearly the same size as nano but embedded with a NRF24L01, and also very cheap $4 USD. To make it works: The “RF24 > Scanner” will works like below 100% compatible with Arduino nano 2023/07/17

altera and xilinx probably copying each other 2023/07/16

3. Change the no of hart to 1 Result : Step over fully work 2023/07/15

STK500 is better than MKII since it supports high voltage programming, it can reset fuses from any status. Step 1: Install the driver. Must be version from date 7th Oct Plug in the USB, if it detected wrong driver, update it by select specific folder’. Need reboot the computer to take effect. Step 2: connect […] 2023/07/12

I got MKII ISP from here. To program Arduino Nano via Microchip studio, nothing special, remember have to select the chip. And Nano D8 pin is B0. Nano bootloader can be found in here. 2023/07/12

Did it one more time and 2023/07/07

Simplest steps To make the RGB led work, put on these three jumpers 2023/07/05

Arduino To make it work in Arduino, don’t use adafruit SSD1306, you have to use SSH110X library. Run the example, no need to modify anycode. 2023/06/27

This video works https://www.youtube.com/watch?v=Mt6U30Yxrr8&t=311s , sample code is in here. 2023/06/21

this youtube works. Oled 0.91 and 0.96 inch both work. Oled can buy in here. The adafruit example is 128×32, need to change to 128×64 for 0.96 inch oled. One thing becareful, 0.96 oled 128×64, the address is still 0x3c, not 0x3d In Arduino IDE, change the address to “3C”, otherwise won’t work 2023/06/17

2023/06/11

Teaching always sharpen my knowledge, fill up all the missing gap of my skill 2023/06/07

I found something: 2023/06/07

https://www.ee-diary.com/2021/06/how-to-program-atmega328p-using-atmel.html 2023/05/25

bought from here 2023/05/08

Bought from here. user manual：           https://github.com/wuxx/icesugar-nano/blob/main/README.mdwin 7 serial driver：   https://github.com/wuxx/icesugar-nano/blob/main/doc/usbser.infsource and semantics：     https://github.com/wuxx/icesugar-nano Follow https://projectf.io/posts/building-ice40-fpga-toolchain/ . If you got this error: fatal error: ‘ftdi.h’ file not found, then modify config.mk in /Users/peter/workspace/icestorm: Edit /Users/peter/workspace/icestorm/iceprog/Makefile All examples in https://github.com/wuxx/icesugar-nano , just drag the demo program from demo folder or build it […] 2023/05/01

This code can check I2C address from multiple devices 2023/04/27

One LCD need to set the jump at back to have another I2C address 2023/04/27

Got this board from Taobao. Follow https://randomnerdtutorials.com/installing-the-esp32-board-in-arduino-ide-windows-instructions. schematic：https://pan.baidu.com/s/1sNCK3Z4ZXfziKoF-ZYDMiw  Code：pxc4doc：https://pan.baidu.com/s/1SJFlgyIenaM4-TfmT1eLtQ  Code：NICE  or download here If you failed to run the code for this. Hold “Boot” button while uploading the code If you meet “the port doesn’t exist”, do: 2023/04/27

STM32FEBKC6T6 2023/04/21

MyFunction.c Control Code 2023/04/20

Buy from here. Example is in here 2023/04/18

We are developing our own risc-v so we need to have to ability to modify openocd. Here is the quickest guide for you to start when you type “set $s1=0xaabb”, it will jump to here 2023/04/12

Buy from here https://item.taobao.com/item.htm?spm=a1z09.2.0.0.67002e8deFDqTo&id=630403001847&_u=bbuhab0778e , model is STM32F103C8T6 2023/04/11

Tutorial: Create the project Step 1: Open STM32IDE, create the project, choose the right MCU Step 2: Type in project name Step 3: This is project structure Step 4: LED is assign to PC13, set it to GPIO output Then it will generate the setup code Step 5: Blink the led in main, there is […] 2023/04/08

This graph generated by graphviz, helping students easier understand Professor Jim Huang’s SEMU RISC-V emulator 2023/02/27

講得好step by step 2023/02/10

After hacking the qemu risc-v source code, here is the PLIC call map 2023/02/06

Created the library to export our data structure into logisim, https://gitlab.com/quantr/eda/logisim-library , part of our EDA tool 2023/02/04

The first step of logic synthesis is call “HDL synthesis”, converting verilog into raw netlist. http://ebook.pldworld.com/_eBook/FPGA%EF%BC%8FHDL/-Eng-/Verilog%20HDL%20Synthesis.%20A%20Practical%20Primet%20%28Bhasker%29.pdf 2023/02/01

These two papers are referenced by above book about HDL translator 2023/01/29

https://downloadly.net/2020/19/7490/03/cadence-ic/23/?#/7490-cadence-212315010314.htmlhttps://downloadly.net/2020/19/7490/03/cadence-ic/23/?#/7490-cadence-212315010314.html 2023/01/19

If you unable to mount your icesugar board in ubuntu and saying this error “Not authorized to perform operation”, this link resolve it https://benjaminnl.pixnet.net/blog/post/4894925-ubuntu-%E8%A7%A3%E6%B1%BA%E9%9A%A8%E8%BA%AB%E7%A2%9F%E7%84%A1%E6%B3%95%E9%96%8B%E5%95%9F%EF%BC%9Anot-authorized-to-perfo The below board https://item.taobao.com/item.htm?_u=fbuhab0c863&id=631164799875 only work with the extension board on right hand side, the left hand side one dont. I found out the chip in the middle is different, rhs […] 2022/12/15

After testing, the minimal memory of xv6-riscv needed is 3MB 2022/10/30

https://item.taobao.com/item.htm?spm=a1z09.2.0.0.15412e8duBDI2J&id=645704746945&_u=mbuhab0da05 2022/08/22

https://item.taobao.com/item.htm?spm=a1z09.2.0.0.67002e8ddznHy0&id=630403001847&_u=gbuhab04cbb STM32F103C8T6 2022/08/16

Remark: https://aijishu.com/a/1060000000330400 brew install iconv or apt-get install lcov 2022/08/06

作者用第一身Manager嘅身份教你點謀劃一個ASIC項目 2022/07/17