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[[bc10]] -Contents #Contents *Summary [#afc81daa] > The serial console of bc10 can be connected to the 30-pin Unified Connector. Communicating with a PC,~ The serial console of bc10 can be connected to the 30-pin connector. Communicating with a PC,~ the serial console is useful. However, to utilize the serial console, an interface adapter is required.~ This section introduces two examples of how to make a serial interface.~ *Serial Interface [#p786cc72] ** Example 1 [#p336d749] *** List of Parts [#df3502ad] > |Name|Quantity|URL|Others| |iPod Dock connector 30pin (Male)|CENTER:1|http://www.sengoku.co.jp/mod/sgk_cart/search.php?toku=%25A4%25B3%25A4%25CD%25A4%25AF%25A4%25BFiPod&cond8=and&dai=&chu=&syo=&k3=2&pflg=n&list=4|| |EIA-574 connector (Female)|CENTER:1|http://akizukidenshi.com/catalog/g/gC-00645/|9pin D-Sub connector| |MAX3232|CENTER:1|http://akizukidenshi.com/catalog/g/gI-00469/|Serial level converter| |Ceramic Capacitor 0.1uF|CENTER:5||| -Wires (Recommend 0.26mm diameter single wires for connections)~ -Protoboard~ *** Connectors [#q304a2ea] > - J1 iPod Dock connector 30pin (Male) -- Connect to bc10 - J2 EIA-574 connector (Female) --Connected by straight cable (Null modem) - J3 PIN HEADER(10pin) -- BeagleBoard (IBM PC mother board) equivalent. The converter for PC is usable, but if do not use it,~ do not need to put this PIN HEADER on the universal board. *** Circuit Schematic [#tab45e51] > - Circuit schematic &ref("bc10-interface_board1.pdf"); *** How to Assemble [#g7c838a9] > + At J1 connector, a GND (#1, #2, #11, #15, 16, #29, or #30 pin), 3.3V (#18 pin), Tx (#12 pin), and~ Rx (#13 pin) are soldered to the wires + According to the circuit schematic, put MAX3232, ceramic capacitors, and J2 on the protoboard + Connect J1 to the universal board > - Test the functionality of serial interface -- EIA-574 is Null modem, so it can be connected to a RS-232C (straight and 9 pins) -- To communicate the device, the settings of terminal software at the host PC are shown below~ ---Speed:115200bps~ Data length:8bit~ Parity:None~ Hardware Flow:None~ *** Exterior [#j05b2157] > &ref(DSCF3091.JPG,,25%); ** Example 2 [#eefd1ce9] *** List of Parts [#vb42d39c] > |Name|Quantity|Specs|URL|Others| |RS232C Interface IC|CENTER:1|RSR 232C Interface IC ADM3202AN (DIP)|http://akizukidenshi.com/catalog/g/gI-00469/|Including ceramic capacitor 0.1uF 5qt.and DIP 16pin socket| |Protoboard|CENTER:1|DSub-9 board set (Small)|http://akizukidenshi.com/catalog/g/gP-01335/|Including DSub Connectors| |ipod Interface board|CENTER:1|iPod Interface board[IFB-iPod]|http://www.aitendo.co.jp/product/1435|| |PIN HEADER|CENTER:1|Pin Header (Male) 2x40 (80P)|http://akizukidenshi.com/catalog/g/gC-00082/|| |Connector|CENTER:2|Header socket 30P(MIL Standard)|http://www.sengoku.co.jp/mod/sgk_cart/search.php?toku=%25E3%2581%2593%25E3%2581%25AD%25E3%2581%258F%25E3%2581%259F+BOX&cond8=and&dai=%25E3%2581%2591-%25E3%2581%25B6%25E3%2582%258B%25E3%2582%2581%25E3%2581%2599&chu=&syo=30&k3=0&list=2|| |Ribbon|CENTER:1|30-way 1.27mm Pitch||Approximately 30~50cm| *** How to Assemble [#g48841db] > - Break a set of PIN HEADER (1 set for 40-pin x 2 lines) into 2 sets of 15-pin x 2 line. - Solder the resized PIN HEADER into iPod interface board. Make sure the direction that the iPod interface~ board is attached to bc10, and be careful with the soldering side of the iPod board. - According to the circuit schematic, place RS232C on the universal board. -- iPod 30pin (J1) is replaced with the 2 lines of the resized 15-PIN HEADER. --- Since the iPod interface board is connected to ribbon cable later, do not confuse the pin numbers~ on the iPod interface board. -- PIN HEADER 10p (J2) is only used when bc10 is communicated by the serial communication cable for~ BeagleBoar. Otherwise, it is not necessary. -- J3 primarily uses the female side. Its cable is Null modem and the connection is cross. To use straight cable,~ it can be connected to a PC serial port. --- When the male side of J3 is used, the 2nd and 3rd pins are exchangeable. As it is connect to PC, use cross~ cable. - 30pin connectors are crimped with both edges of the 30-way ribbon cable. Pay attention to pin numbers and the~ directions of the connectors. - iPod interface board and the protoboard, which is equipped with RS232C interface, is connected. This is the~ end of the assembly process. - 30pin connector works well as it is connected only 4 required lines, and other connections can be skipped. GND~ is needed to only one connection out of seven GND connections. The selection is arbitrary. * Others [#hebe3726] > -Several chip makers produce clones of MAX3232, and the clones work fine and can replace the original here.~ -EIA-574 connector can be used for not only board-type but also cable-type. Depending on PC environment, freely~ set up the connector.~ -EIA-574 is the standardized name for DSub-9pin type of serial communication.
