did I break my SPI ports? - Raspberry Pi Forums
hi all, im connecting ws2801 raspberry pi3 . needed go around 2 corners cut strip , solderen them @ angle. worked fine @ desk. installed them, , worked bit, after correcting positioning of strip few times stopped working. brought desk, , noticed 1 of 5v solder points may have had 1 strand touching spi clk pin.
did destroy spi clk? still see spi devices:
can test if spi still working? tried running spidev_test. output found online seems suggest there should more output. see.
appreciated. else guess buy new rpi3 , test there.
did destroy spi clk? still see spi devices:
connected single ws2801 led wasnt used in project directly rpi 5v instead of external 5v led strip , still no go. led turns on, cant control it.root@pi2:/home/pi/ws# ls -al /dev/spi*
crw-rw---- 1 root spi 153, 0 sep 3 11:07 /dev/spidev0.0
crw-rw---- 1 root spi 153, 1 sep 3 11:07 /dev/spidev0.1
can test if spi still working? tried running spidev_test. output found online seems suggest there should more output. see.
if connect simple normal led spi ports, can control using gpio -g write. led turns on/off if bring pins gpio 9/11 up/down.root@pi2:/home/pi# ./a.out
spi mode: 0x0
bits per word: 8
max speed: 500000 hz (500 khz)
appreciated. else guess buy new rpi3 , test there.
yes! putting 5v (more 4v) on gpio pin cause called latchup, , instantly destroy transistors of gpio in soc, causes them burnout , cause short, not stops gpio not work anymore, overheat chip, cause further damage.
rule 101, pi's gpio's "not 5v tolerant"!
nor heeding cost pi!
sorry....
rule 101, pi's gpio's "not 5v tolerant"!
nor heeding cost pi!
sorry....
raspberrypi
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