i2c_reset_bus
i2c_reset_bus
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Author
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Wouter van Ooijen, Copyright © 1998, 1999 Wouter van Ooijen
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Adapted-by
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Joep Suijs, William Welch
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Compiler
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>=2.4g
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Description
reset / clear the i2c bus, bit-bang approach
Define i2c pins like:
alias i2c_scl is pin_c3
alias i2c_scl_direction is pin_c3_direction
alias i2c_sda is pin_c4
alias i2c_sda_direction is pin_c4_direction
const word _i2c_bus_speed = 1 ; * 100kHz
Dependencies
Private
Private
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_i2c_stop()
_i2c_stop - output a stop condition
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_i2c_wait()
_i2c_wait - wait for a change to settle (for internal use only)
The delay is determined by i2c_bus_speed and is 1/4 of the cycle time.
Given the delay resolution of 1 us and all actions required by
i2c_software routines, the actual bus speed will be lower then the
configured maximum.
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_i2c_start()
_i2c_start - output a start condition
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_i2c_bit_out(bit in x)
_i2c_bit_out- output a single bit (for internal use only)
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_i2c_bit_in(bit out x)
_i2c_bit_in- input a single bit (for internal use only)
Here are the list of samples which use this library: