Resources

Tools to Solve Complex Engineering Problem

Clean Code / Gaphics
Mob Programming
Git / Github
Modulization / Standard Connector

Software Engineering 🌐 🎬 💾 📚 📑

Mob Programming

mob

Mob Programming woodyzuill.com.

Mob Programming Example Youtube Video.

Agile Firmware and Hardware Design

Youtube Video

Embedded System

Design circuit boards with code

Design circuit boards with code! 
✨ Get software-like design reuse 🚀, 
validation, version control and 
collaboration in hardware; 
starting with electronics ⚡️

Design circuit boards with code!

No RTOS

ANTIRTOS

Yes RTOS

FreeRTOS
Zephyr
RT-Thread

Raspberry Pi Documentation

Bead Usage

errite-beads-common-applications-and-considerations

Fast Serial IO Serdes-LVDS

Fast Serial IO

High Speed PCB Design

Some C Stuff

.h file

pin.h : store pin name define and hardware related constant

constant.h : store constant related to software

data.h : store software related general data structure

error.h : error code and error message

global.h : place to define global access variable

log.h : Macros about log

c naming convention

Variable start with Lowercase

Function, Enum, Class, Class start with Uppercases

Parameters start with underscore

Macro start with all uppercase with underscore between words

c others stuff

comment closing curly braces

variable suppose to have min and max

c function error handling

1st parameter is alwasy *error

int my_function(Error *err, int a, int b)
{
    if a < 0 {
        *err = ERROR::LESSTHENZERO;
        return 0;
    }
}

setjmp longjmp 用法

#include <stdio.h>
#include <setjmp.h>

jmp_buf buf;

void nested_function() {
    printf("在深層函數中，發生錯誤...\n");
    longjmp(buf, 1); // 跳回到 setjmp 處，並傳回 1
    printf("這行不會被執行\n");
}

int main() {
    // 1. 設定跳轉點
    if (setjmp(buf) == 0) {
        printf("準備呼叫深層函數\n");
        nested_function();
    } else {
        // 2. 當從 longjmp 跳回時
        printf("已從錯誤中恢復\n");
    }

    return 0;
}

C Header File Example

// 1. Include Guards (Essential to prevent multiple inclusions)
#ifndef MY_HEADER_H
#define MY_HEADER_H

// 2. Includes (Only necessary ones, like standard types)
#include <stdint.h>

// 3. Macros and Constants
#define MAX_BUFFER 1024

// 4. Data Type Definitions (Structures, Enums, Typedefs)
typedef struct {
    int id;
    char name[20];
} User;

// 5. Function Prototypes (Public interface)
void ProcessUser(User* u);
int GetStatus(void);

// 6. External Global Variables (If shared)
extern int globalConfig;

#endif // MY_HEADER_H

FPGA 🌐 🎬 💾 📚 📑

FPGA DFX

📚Dynamic Function eXchange Licensing

FPGA Tandem

📚UltraScale+ Devices Integrated Block for PCI Express Product Guide (PG213)

Generates Makefiles for FPGA EDA

Manta: A Configurable and Approachable Tool for FPGA Debugging and Rapid Prototyping

https://fischermoseley.github.io/manta/

DDR3 Memory

7 Series Compare

Valid Ready Handshake use Verilog

Valid-Ready Handshake

Verilog Signal Naming Guide

Type of Signal	Suffix Prefix (optional)	Example
Clock signals	clk or _ck	sys_clk, clk
Reset signals	_rst or _reset	cpu_reset, rst
Active-low signals	_n or _x	reset_n, enable_x
Enable signals	_en	write_en
Input ports	i or _in i or in_	data_in, i_valid
Output ports	o or _out o or out_	data_out, o_ready
Registered signals	_reg o _r	count_reg, state_r
Next state signals	n_	n_state

USB3 DAQ

USB3 FIFO Interface for DAQ use FT60X and Cypress FX3

USB3 FIFO Interface for DAQ

Korean Blog about FT601

USB3.2 Interface for DAQ Cypress FX20

ONIX

Open Ephys: Onix

Onix Breakout Board Github

Github Source Code

DAQ

Intan

RHX Impedence Measure

Use hdmi video capture as data input

HDMI Output as Data to PC

A 2 GHz oscilloscope for everyone

https://www.crowdsupply.com/andy-haas/haasoscope-pro

https://github.com/drandyhaas/HaasoscopePro

DAQ Sync

data-acquisition-synchronisation

Sync Expander and Sync Hub

Harp on Pico

Harp Core Pico Github Source

Wireless Headstages

Wireless Headstage

AD5940 Collections

AD5940.md

RJ45 has No Ground without Transformer Coupling

Design Review

PCB Review

supply voltage
logic level
gpio fn
pull up , pull down
protection ckt
power budget
battery low condition
race condition
connectors 
unused pin check
termination
tx rx check
reset

Mistakes People Make When Designing Prototype PCBs

Designing for Production: • Design the first PCB expecting it to fail, focusing on functionality testing. • Size and shape considerations can come later; prioritize testing various features.
No Test Points: • Lack of test points hinders debugging and fixing mistakes. • Test pads for common functionalities reduce the risk of blocking progress.
No Power or Diagnostic LEDs: • Diagnostic lights for voltage levels and operations save time in identifying simple mistakes.
Overcrowding Components: • Avoid packing components tightly during prototyping; leave space for adjustments. • Keep passives relatively large for easier removal during testing.
Underutilizing Silk Screen: • Clearly label components on the silk screen for easy assembly and orientation. • Ensure markings are readable on the smallest boards.
Not Using Isolation Jumpers: • Incorporate zero-ohm resistors or cutable jumpers for easy isolation during testing. • Facilitates methodical bring-ups and simplifies troubleshooting.
Not Breaking Out Unused GPIOs: • Break out additional GPIOs for testing and fixing mistakes without ordering a new PCB. • Adds flexibility for rewiring components or integrating external modules.
UART Mixups: • Ensure correct pairing of transmit and receive pins in UART components. • Use jumpers or specific designs to easily correct mistakes.
Locking Into I2C Addresses: • Provide options to change I2C addresses using resistors for flexibility. • Prevents the need for a new PCB revision due to address conflicts.
Separate Power PCB: • Consider splitting the design into multiple boards, especially separating power. • Enables testing power solutions independently without scrapping the entire PCB.
Choosing Labeled Surface Mount Resistors: • Opt for labeled surface mount resistors for easier visual inspection and testing.
Verify Footprints: • Check dimensions on the data sheet against PCB footprints in your design software. • Prevents ordering the wrong footprint for components.
Check Parts Availability: • Consider part availability before designing the circuit. • Speculatively order critical parts before PCB production to mitigate shortages.

Digilent Analog Discovery 2 Schematics

Math

Probabilistic numerics

https://www.probabilistic-numerics.org/

JP Books Site

https://gihyo.jp/dp

https://honto.jp/

https://cc.cqpub.co.jp/lib/