Difference: OledDisplay (20 vs. 21)

Revision 212021-05-31 - PeterSchmid

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I2Cget ( c-addr u -- ) c-addr buffer address for the message to receive I2Cputget ( a1 u1 a2 u2 -- ) a1 buffer address for the message to send, a2 buffer address for the message to receive

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>oled ( -- addr1 addr2 ) redirect to oled
>term ( addr1 addr2 -- ) terminate redirection

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Usage

It is easy to redirect the terminal output to the OLED display, to use the string formatting words.

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;

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or even simpler

: oled-hallo (  -- )
  >oled         \ redirect terminal to oled-emit
  ." Hallo Velo! " cr
  ." ciao"
  >term         \ terminate redirection
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or on a command line

>oled .( Hallo Velo!) >term

show date and time on OLED (see CmsisRtos#How_to_use_Tasks for a background task).

: clock (  -- )
  oledclr

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begin wait-alarm \ wait a second 0 0 oledpos!

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hook-emit @ \ save emit hook ['] oled-emit hook-emit ! \ redirect terminal to oled-emit .time hook-emit ! \ restore old hook

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>oled .time >term

key? until key drop ;

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