The%20Serial%20Peripheral%20Interface%20(SPI)

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The Serial Peripheral Interface (SPI)

• Chapter 8

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SPI

• Operation of the SPI
• Keypad Interfacing with 74165 Shift Registers
• 4-Digit Seven-Segment Display Using a MC14499
• The 68HC68T1 Real-Time Clock

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File SPI.WHP
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SPI

• Operation of the SPI
• Keypad Interfacing with 74165 Shift Registers
• 4-Digit Seven-Segment Display Using a MC14499
• The 68HC68T1 Real-Time Clock

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16 x 1 Hex Keypad
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SPI

• Operation of the SPI
• Keypad Interfacing with 74165 Shift Registers
• 4-Digit Seven-Segment Display Using a MC14499
• The 68HC68T1 Real-Time Clock

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Connecting the MC14499 to three common
cathode 7-segment displays
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STRING.WYP see Chapter 12
(U.) ( n -- addr len )
345 (U.)
A 3 on data stack
4 SWAP - \ A 1 FOR \ A 1- 15 OVER C! \ store
F for blank NEXT
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Maxim Serially Interfaced, 8-Digit LED Display
Driver
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max.whp
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Lab 2
Add the word .3leds ( n -- ) that will display a
decimal number n between 0 and 999 with leading
blanks.
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SPI

• Operation of the SPI
• Keypad Interfacing with 74165 Shift Registers
• 4-Digit Seven-Segment Display Using a MC14499
• The 68HC68T1 Real-Time Clock

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T1.WHP
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MC68HC68T1 Example
LOAD T1.WHP HEX SPI.INIT T1.INIT 10 35 42
SET.TIME .TIME
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Summary
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Exercises
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