i2c 1.0.1

A collection of i2c related words



I2C

Matthias Trute mtrute@web.de Version 1.0.1 - 2016-10-19

This package provides some more or less generic I2C related words. They are generic in a sense that they depend on a low level hardware driver, that provides some very basic routines to access the I2C interface. They are still specific to amforth, visit http://amforth.sourceforge.net/TG/recipes/I2C-Generic.html

They are tested with amforth on an Atmega with it's hardware I2C module called TWI.

i2c.frt

above the specific driver words some generic but still low level words.

i2c.begin         -- starts a I2C bus cycle
i2c.end           -- ends a I2C bus cycle
i2c.n>            -- send n bytes to device   (n> means from data stack)
i2c.>n            -- read n bytes from device (>n means to data stack)

i2c-detect

This command scans the bus and prints a small overview over the addresses that respond to the ping.

(ATmega1280)> i2c.detect 
      0  1  2  3  4  5  6  7  8  9  A  B  C  D  E  F
 0:                       -- -- -- -- -- -- -- -- --
10:  -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
20:  -- -- -- -- -- -- -- 27 -- -- -- -- -- -- -- --
30:  -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
40:  -- -- 42 -- -- -- -- -- -- -- -- -- -- -- -- --
50:  50 -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
60:  -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
70:  -- -- -- -- -- -- -- --                        
 ok

The tool and the output is designed to mimic a linux tool of the same name.

i2c-eeprom*

The 24Cxx chips using 2 byte addresses are supported. The interface uses the block wordset API. The API transfers the standard block size to a fixed block buffer defined outside of this package.

by mtrute

avatar of mtrute

Versions

1.0.3, 1.0.2, 1.0.1, 1.0.0

Download 1.0.1 as zip

Tags

i2chardware, i2c, hardware, mcu

Dependencies

None

Dependents

None