i2c_mapping.c File Reference

#include "i2c.h"
#include "i2c_mapping.h"
#include "port.h"

Include dependency graph for i2c_mapping.c:

Functions
bool	i2c_set_mux_bus (uint8_t bus_id, i2c_mux_state_t *i2c_mux, int8_t new_state)
	Change I2C bus mux state.
uint8_t	i2c_get_mux_bus (uint8_t bus_id, i2c_mux_state_t *i2c_mux)
	Read I2C bus mux state.

Variables
i2c_mux_state_t	i2c_mux [I2C_MUX_CNT]
i2c_bus_mapping_t	i2c_bus_map [I2C_BUS_CNT]
i2c_chip_mapping_t	i2c_chip_map [I2C_CHIP_CNT]

Function Documentation

i2c_get_mux_bus()

uint8_t i2c_get_mux_bus	(	uint8_t	bus_id,
		i2c_mux_state_t *	i2c_mux )

Read I2C bus mux state.

Parameters

bus_id	Target bus ID
i2c_mux	Pointer to bus mux structure

Returns

Bus current state

i2c_set_mux_bus()

bool i2c_set_mux_bus	(	uint8_t	bus_id,
		i2c_mux_state_t *	i2c_mux,
		int8_t	new_state )

Change I2C bus mux state.

Parameters

bus_id	Target bus ID
i2c_mux	Pointer to bus mux structure
new_state	New bus mux state

Return values

true	Bus was successfuly changed to the desired mux setting
false	Bus could not be changed to the desired mux setting

Variable Documentation

i2c_bus_map

i2c_bus_mapping_t i2c_bus_map[I2C_BUS_CNT]

Initial value:

= {
    [I2C_BUS_UNKNOWN_ID] = { I2C1, -1, 0 },
    [I2C_BUS_FMC1_ID]    = { I2C2,  0, 1 },
    [I2C_BUS_FMC2_ID]    = { I2C2,  1, 1 },
    [I2C_BUS_CPU_ID]     = { I2C1, -1, 1 },
    [I2C_BUS_RTM_ID]     = { I2C2,  3, 1 },
    [I2C_BUS_CLOCK_ID]   = { I2C2,  2, 1 },
    [I2C_BUS_FPGA_ID]    = { I2C2, -1, 1 },
}

i2c_chip_map

i2c_chip_mapping_t i2c_chip_map[I2C_CHIP_CNT]

i2c_mux

i2c_mux_state_t i2c_mux[I2C_MUX_CNT]

Initial value:

= {
    { I2C1, -1, 0 },
    { I2C2, -1, 0 }
}