https://w.electrodragon.com/w/index.php?action=history&feed=atom&title=SPI 2026-07-22T11:32:56Z Revision history for this page on the wiki MediaWiki 1.37.2 https://w.electrodragon.com/w/index.php?title=SPI&diff=31942&oldid=prev 2021-08-03T07:06:21Z

<p></p> <p><b>New page</b></p><div>== Mode ==<br /> <br /> {| class=&quot;wikitable sortable&quot;<br /> |-<br /> ! Mode !! Line !! Header text<br /> |-<br /> | One line half-duplex || PA5, PA7 || - <br /> |-<br /> | Two lines full-duplex || PA5, PA6, PA7 || - <br /> |-<br /> | NSS full-deplex || PA4 - CS, PA5, PA6, PA7 || - <br /> |}<br /> <br /> ==FPS speed for RPI SPI LCD==<br /> Each Pixel is 16 bits (RGB565)<br /> * FPS = 16 000 000(SPI) /480 (px) /320 (px) /32 (SPI FIFO) / 2 (R&amp;W) =1.63 FPS<br /> * FPS<br /> <br /> == Linux ==<br /> Install for MCP2515, for crystal 12Mhz<br /> dtparam=spi=on<br /> dtoverlay=mcp2515-can0,oscillator=12000000,interrupt=25,spimaxfrequency=2000000<br /> <br /> dmesg | grep -i '\(can\|spi\)'<br /> [ 2.079149] systemd[1]: cron.service: Cannot add dependency job, ignoring: Unit cron.service is not loaded properly: Invalid argument.<br /> [ 3.774154] CAN device driver interface<br /> [ 3.794525] mcp251x spi0.0 can0: MCP2515 successfully initialized.<br /> [[category: Interface]]</div>

Chao