Editing SPI
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[[SimpleMotion library]] communicates to [[VSD-E and VSD-XE]] drives via SPI bus. The phyiscal transfer link between PC and VSD drive is [http://www.ftdichip.com/Support/Documents/DataSheets/Cables/DS_TTL-232R_CABLES.pdf FTDI TTL232R USB serial adapter]. | [[SimpleMotion library]] communicates to [[VSD-E and VSD-XE]] drives via SPI bus. The phyiscal transfer link between PC and VSD drive is [http://www.ftdichip.com/Support/Documents/DataSheets/Cables/DS_TTL-232R_CABLES.pdf FTDI TTL232R USB serial adapter]. | ||
===From low level hardware=== | ===From low level hardware=== | ||
− | SPI bus on VSD drives | + | SPI bus on VSD drives require 3 data wires and ground: |
* SCLK - clock signal | * SCLK - clock signal | ||
* MISO - master in, slave out | * MISO - master in, slave out | ||
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SPI signals are relatively easy to generate with any programmable device with digital I/O's such as microcontrollers. [[SimpleMotion]] source code can be ported on many platforms including MCU's. | SPI signals are relatively easy to generate with any programmable device with digital I/O's such as microcontrollers. [[SimpleMotion]] source code can be ported on many platforms including MCU's. | ||
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==See also== | ==See also== | ||
*[[Wikipedia:Serial Peripheral Interface Bus]] | *[[Wikipedia:Serial Peripheral Interface Bus]] | ||
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