Difference between revisions of "RS232 RS485 USB Converter Board"
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*rs232 to rs485 side | *rs232 to rs485 side | ||
**Tested max. baudrate is 115200(i assume more high baudrate can be accepted, but i have not tested) | **Tested max. baudrate is 115200(i assume more high baudrate can be accepted, but i have not tested) | ||
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==Technical== | ==Technical== | ||
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===RS232=== | ===RS232=== | ||
*[http://www.realhamradio.com/tac32-interface.htm RS232 Circuit examples] | *[http://www.realhamradio.com/tac32-interface.htm RS232 Circuit examples] | ||
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===USB=== | ===USB=== | ||
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*chips | *chips | ||
**[http://chungyan5.no-ip.org/WebServerDocs/open_data/KnowledgeDb/ComputerSysDevelopment/apps/comm/converter/ds2232c_15.pdf ds2232c] | **[http://chungyan5.no-ip.org/WebServerDocs/open_data/KnowledgeDb/ComputerSysDevelopment/apps/comm/converter/ds2232c_15.pdf ds2232c] | ||
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==ToDo== | ==ToDo== | ||
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*linux driver | *linux driver | ||
**driver in linux : http://ftdi-usb-sio.sourceforge.net/ | **driver in linux : http://ftdi-usb-sio.sourceforge.net/ | ||
| + | **USB and [http://www.usconverters.com/index.php?main_page=index&cPath=65 RS232 to RS485 converter] designs for Linux and Windows 7 64-bit | ||
**usb in linux guide : http://www.linux-usb.org/USB-guide/book1.html | **usb in linux guide : http://www.linux-usb.org/USB-guide/book1.html | ||
| − | ** | + | *get a USB to RS-232/RS-485 converter driver ,PCI/PCI-Express TO RS-232/RS-485/RS-422 Driver |
| + | *re-design all PCB boards dimension following a mechanical box | ||
| + | *merge RS232 board and RS232_dspic_prog board together | ||
| + | **using 5 pins as TTL level connection, adding one more for RS485 ctrl, and pin layouts as "signal power signal power ..." | ||
| + | *In the market, it has so many these kind of converter and very cheap price(<HK100) and they are including a small mechanical box(electronic does not complex, but mechanial box is complex), which is better than what we do by ourself. | ||
| + | [[Category:Projects]][[category:Serial Communications]] | ||
Latest revision as of 07:00, 14 January 2012
Contents
Features[edit]
- for low traffic and low speed application
- mcu, RS232, RS485/RS422, slave usb all can be interchangeable.
- usb side
- support platform in linux with usb driver
- simulated uart programming in application level
- rs232 to rs485 side
- Tested max. baudrate is 115200(i assume more high baudrate can be accepted, but i have not tested)
Technical[edit]
RS232[edit]
USB[edit]
- Host Computer Setting for usb connection
- chips
ToDo[edit]
- get a usb chips to uart, which with linux driver
- MCT P87C52UBAA(http://pfranc.com/usb/usb.mhtml)
- cypress, PSoC with USB
- linux driver
- driver in linux : http://ftdi-usb-sio.sourceforge.net/
- USB and RS232 to RS485 converter designs for Linux and Windows 7 64-bit
- usb in linux guide : http://www.linux-usb.org/USB-guide/book1.html
- get a USB to RS-232/RS-485 converter driver ,PCI/PCI-Express TO RS-232/RS-485/RS-422 Driver
- re-design all PCB boards dimension following a mechanical box
- merge RS232 board and RS232_dspic_prog board together
- using 5 pins as TTL level connection, adding one more for RS485 ctrl, and pin layouts as "signal power signal power ..."
- In the market, it has so many these kind of converter and very cheap price(<HK100) and they are including a small mechanical box(electronic does not complex, but mechanial box is complex), which is better than what we do by ourself.
