Difference: AnAdditionalLectureOnCProgramming (2 vs. 3)

Revision 32017-11-03 - uli

Line: 1 to 1

META TOPICPARENT	name="LectureSlides"

Slide 1: An additional Lecture on C Programming

Line: 135 to 135

Solution: arg count

Changed:

<
<

>
>

Argument Check

Line: 167 to 167

Solution: argument check

Changed:

<
<

>
>

Creating the wave form

Line: 255 to 255

Bit handling functions

Changed:

<
<

We need to learn a few bit handling functions before

>
>

We need to learn a few bit handling operators before

being able to prepare the data for the DAC:

Changed:

<
<

| : bitwise or

>
>

| : bitwise or

Changed:

<
<

& : bitwise and

>
>

& : bitwise and

data += 5 <=> data = data + 5

Line: 273 to 273

data << 4 all bits in data are shifted left by 4

Changed:

<
<

>
>

example:

data = 16  00010000
data >> 4  00000001

DAC preparation

Write a function which prepares a byte for the DAC

Line: 316 to 319

Send one short value to the DAC

Changed:

<
<

Now that we know how to strobe it is easy to write

>
>

Now that we know how to strobe, it is easy to write

a 12 bit value to the DAC

We must do it in 3 steps:

Changed:

<
<

and out all the bits in the data word
except the last 4 (first data nibble)

>
>

"and" out all the bits in the data word
except the last 4 (first data nibble)

“or” in the rw and register bits (must be reg 0! )
and send the dataByte to strobe

Changed:

<
<

Shift the data word by for bits and do the same thing
(now the register bits must be 1 of course)

>
>

Shift the data word by for bits and do the same thing
(now the register bits must be 1 of course)

Shift again by 4 bits and repeat

Solution: send one data word

Line: 391 to 394

META FILEATTACHMENT	attachment="sineFunc.png" attr="" comment="" date="1507537960" name="sineFunc.png" path="sineFunc.png" size="68602" user="uli" version="1"
META FILEATTACHMENT	attachment="strobe.png" attr="" comment="" date="1507537960" name="strobe.png" path="strobe.png" size="46229" user="uli" version="1"
META FILEATTACHMENT	attachment="waveGen.odp" attr="" comment="" date="1508157571" name="waveGen.odp" path="waveGen.odp" size="786000" user="uli" version="1"

Added:

>
>

META FILEATTACHMENT	attachment="cmdLineCountv2.png" attr="" comment="" date="1509720249" name="cmdLineCountv2.png" path="cmdLineCountv2.png" size="21507" user="uli" version="1"
META FILEATTACHMENT	attachment="argCheckv2.png" attr="" comment="" date="1509720390" name="argCheckv2.png" path="argCheckv2.png" size="49568" user="uli" version="1"
META FILEATTACHMENT	attachment="genWavev2.png" attr="" comment="" date="1509720806" name="genWavev2.png" path="genWavev2.png" size="59492" user="uli" version="1"

View topic | History: r3 < r2 < r1 | More topic actions...