lpcware

SPI Problem

Discussion created by lpcware Employee on Jun 15, 2016
Latest reply on Jun 15, 2016 by lpcware
Content originally posted in LPCWare by andersonf on Wed May 11 11:35:47 MST 2011
Hello,

I am programming for the ARM LPC1343 SPI communication and am having problems.
I used the example of NPX for SPI.
By placing the oscilloscope on pin 2.11 (SCLK) voltage is only 350mV.
There is a "clock"very bad .. are sequences of peaks and then stays low ...
happens again this sequence, up to half of these peaks seems that the distance of one and one equals ... but then stays the same.
I tried putting greater 4,8,10 prescaler to reduce the frequency and check if "noise" would diminish .. but to no avail.
Could someone help me solve this problem?

Thanks!

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