Having trouble with serial communication?

LaurV · 2017-05-29, 07:18

If you ever do, check the datasheet, check the USART block diagrams, etc., your microcontroller may not be sending out the shifted data as you expect...

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retina · 2017-05-29, 11:35

Multiple CR1 and CR2 registers. No pin for receive or transmit. No output on the receiver clock. No output from the interrupt control. It all looks fine to me.

Oh wait now I see the real problem, the formatting of the SCLK pin is overlapped upon itself. Yeah, that could cause some difficulty.

Spherical Cow · 2017-05-30, 15:33

Quote:

Originally Posted by LaurV

If you ever do, check the datasheet, check the USART block diagrams, etc., your microcontroller may not be sending out the shifted data as you expect...

Attachment 16156

Excellent! I've always suspected such things, but never looked close enough I guess.

Norm

xilman · 2017-05-30, 17:54

Quote:

Originally Posted by Spherical Cow

Excellent! I've always suspected such things, but never looked close enough I guess.

Norm

IOW, RTFM, HTH. HAND.

2017-05-29, 07:18	#1
LaurV Romulan Interpreter Jun 2011 Thailand 7²·197 Posts	Having trouble with serial communication? If you ever do, check the datasheet, check the USART block diagrams, etc., your microcontroller may not be sending out the shifted data as you expect...

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2017-05-29, 11:35	#2
retina Undefined "The unspeakable one" Jun 2006 My evil lair 14120₈ Posts	Multiple CR1 and CR2 registers. No pin for receive or transmit. No output on the receiver clock. No output from the interrupt control. It all looks fine to me. Oh wait now I see the real problem, the formatting of the SCLK pin is overlapped upon itself. Yeah, that could cause some difficulty.