Difference: OledDisplay (30 vs. 31)

Revision 312022-09-26 - PeterSchmid

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OLED and I2C Words

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< oled-emit works like the standard word emit. It blocks the calling thread, as long as the character is not written to the OLED display (less than 300 us for a 6x8 character and 400 kHz I2C). Horizontal (x) position is in pixel (0 to 127), vertical position (y) is in lines, a line consists of 8 pixels. Larger fonts takes more than one line.

>
> oled-emit works like the standard word emit. It blocks the calling thread, as long as the character is not written to the OLED display (less than 300 us for a 6x8 character and 400 kHz I2C). Horizontal (x) position is in pixel (0 to 127), vertical position (y) is in lines, a line consists of 8 pixels. 0, 0 is upper left corner. Larger fonts takes more than one line.

oled-emit    ( Char -- )        Emits a character (writes a character to the OLED display)

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hook-emit? ( -- a-addr )

oledpos! ( x y -- ) Set OLED cursor position,

Changed:

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< x horizontal position, max. 127 y vertical position (a line consists of 8 pixels), max. 3 for 128x32 or 7 for 128x64 displays.

>
> x (column) horizontal position, max. 127 y (row) vertical position (a line consists of 8 pixels), max. 3 for 128x32 or 7 for 128x64 displays.

oledpos@ ( -- x y ) Get the current OLED cursor position oledcmd ( c-addr -- ) Send command to the OLED controller SSD1306. First byte contains the length of the command. oledclr ( -- ) Clears the OLED display, sets the cursor to 0, 0 oledfont ( u -- ) Select the font, u: 0 6x8, 1 8x8, 2 8X16 , 3 12X16

Changed:

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< oledcolumn! ( u -- ) Write a column (8 pixels) to the current position. Increment position

>
> oledcolumn! ( u -- ) Write a column (8 pixels) to the current position. Increment position. Bit 0 on top

oledcolumn@ ( -- u ) Read a column (8 pixels) from the current position

I2Cdev ( u -- ) Sets the 7-bit I2C address

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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

>
>

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

*) part of redirection.fs

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