Category:Serial
Hardware UART Chip
Hardware: Use with easy microcontroller arduino
- only need to connect
module serial TX pin -> arduino serial RX pin, which is arduino D0 pin also connect the common ground.
Hardware: Use with USB-TTL Debugger: get a USB-TTL debugger here
- recommand CP2102, CH340 or FT232.
- Same connect the target module TX (send) pin to USB-TTL debugger RX (receive) pin. Connect debuger USB to PC, use software SSCOM to read it.
- Recommand software SSCOM51, please find in github.
Software: Use with SSCOM
- Switch to english version, supported
- Please double check baudrate, stop bits, etc. For example, HLW8032 is 4800bps, EL125 is 9600bps
- click "AddCrLF" depends on the target
Monitor Tool
Tools
SSCOM Serial USB-TTL testing tool please find here.
SIM7020E debug settings
Arduino UNO with EY-08 communication, notice no need /r/n
The rest
UART USB-TTL
Check here to see the definition of UART in wikipedia.
| Type | Features | Compatiblity | Link/Datasheet | Driver | Price |
|---|---|---|---|---|---|
| PL2303HX | - | Not compatible WIN7 | x | ||
| PL2303HXD (rev. D) | - | Compatible WIN7 | 7.5-10.5 | ||
| PL2303TA | - | Compatible WIN7-10, autoupdate | 4.5-7.5 | ||
| CP2102 | QFN28 (5x5mm) | - | 6-8.5 | ||
| CP2104 |
|
- | 5-7.5 | ||
| CH340G |
|
Compatible WIN10, online install | 1.5-2.5 | ||
| CH341A | |||||
| FTDI FT232RL | |||||
| Holtek HT42B534 |
|
WIN10, IOS, Linux Driver free | link, Datasheet | File:Ht42B534.zip | 1-2 |
Generate Compare
USB - UART/RS-232/RS-485/RS-422
| Header text | Manufacturer | Interface | Rate | Package |
|---|---|---|---|---|
| PL2303HX / PL2303HXD /PL2303TA | USB <> 1x UART/RS-232 | Example | ||
| CP2102 /CP2104 | SI | USB <> 1x UART/RS-232 | ||
| CP2105 | SI | USB <> 2x UART/RS-232 | ||
| CH330N | WCH | USB <> 1x UART | 2Mbps | SOP8 |
| CH340C / CH340E / CH340G | WCH | USB <> 1x UART/RS-232/RS-485 | ||
| CH9340 | WCH | USB <> 1x UART/RS-232/RS-485 | ||
| CH9342 | WCH | USB <> 2x UART | ||
| CH9344 | WCH | USB <> 1x UART/RS-232 + 3x UART | ||
| CH341A | WCH | USB <> 1x UART / Parallel / SPI / I2C / etc | ||
| FT232RL | FTDI | USB <> 1x UART/RS-232/RS-485/RS-422 | ||
| FT2232RL | FTDI | USB <> 2x UART/RS-232/RS-485/RS-422 | ||
| FT4232RL | FTDI | USB <> 4x UART/RS-232/RS-485/RS-422 | ||
| HT42B534 | Holtek | USB <> 1x UART/RS-232 |
Parallel / Serial SPI - UART/RS-232/RS-485/RS-422
- CH438
- CH432 || WCH || USB <> 2x UART
Serial Voltage level
voltage divider on left side for GSM rx pin
RX pin of SIM900 is 3v3
Schematic
SC161S, I2S to two serial port
Switch RS232 UART
74AHC86 01
74AHC86 02
Linux (Raspberry PI)
- sudo raspi-config -> 选择Interfacing Options -> Serial，关闭shell访问，打开硬件串口
- sudo nano /boot/config.txt
enable_uart=1 #dtoverlay=pi3-miniuart-bt
Software
ISP Serial Auto download Circuits Design
- RTS#：信号输出，初始状态为高电平，表示芯片接收数据已经准备就绪，下载程序时会变成低电平。
- DTR#：信号输出，初始状态为高电平，下载程序时会变成低电平（但是，是在RTS变为低电平之后才为低）。
Working method for STM32 DL
| Header text | Normal | Beginning | Start Writing | Finiash Writing | Normal |
|---|---|---|---|---|---|
| DTR | 1 | 1 | 0 | 0 | 1 |
| RTS | 1 | 0 | 0 | 1 | 1 |
Auto download esp
| DTR | 1 | 1 | 0 | 0 |
| RTS | 1 | 0 | 0 | 1 |
| ESP8266 RST | 1 | 0 | 1 | 1 |
| ESP8266 GPIO0 | 1 | 1 | 1 | 0 |
STM32 ISP Serial auto download
STM32 MCUIPS software control DTR/CTS
ESP8266 programmer esptools use software uart control method
ESP8266 ESP32 ISP Serial auto download, same for Maixpy K210
ESP8266 auto download
ESP8266 auto DL2 (Not testedd)
ESP8266 auto DL3, need external power (not tested)
Pulse to auto reset ciruits DTR
Arduino Serial
Hardware Serial
- Simply flashed a sketch who does not use the hardware serial D0 / D1
- Do not connect external device during upload sketch
- Connect Target TXD to arduino D1, Target RXD to arduino D0
- Open serial monitor to read data
Pages in category "Serial"
The following 5 pages are in this category, out of 5 total.