57 lines
2.7 KiB
C
57 lines
2.7 KiB
C
#ifndef __I2C_ADDRESSES_H__
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#define __I2C_ADDRESSES_H__
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// Includes:
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#include "fsl_gpio.h"
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// Macros:
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// 7-bit I2C addresses - see http://www.i2c-bus.org/addressing/
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// Also see https://learn.adafruit.com/i2c-addresses/the-list
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// In order to minimize the chance of I2C address collisions in the future, an explicit
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// address allocation strategy is utilized. The idea is to spread UHK I2C slaves 8 addresses
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// away from each other. Given that most I2C devices expose at most 3 address pins which
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// equal to a continuous block of 8 addresses, this strategy allows a lot of room when
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// adding further I2C slaves.
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// Reserved for general call address 0x00
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// Reserved for CBUS compatibility 0x01
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// Reserved for different bus formats 0x02
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// Reserved for future purposes 0x03
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// Reserved for high-speed mode master 0x04
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// Reserved for high-speed mode master 0x05
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// Reserved for high-speed mode master 0x06
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// Reserved for high-speed mode master 0x07
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#define I2C_ADDRESS_LEFT_KEYBOARD_HALF_FIRMWARE 0x08
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#define I2C_ADDRESS_LEFT_KEYBOARD_HALF_BOOTLOADER 0x10
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#define I2C_ADDRESS_RIGHT_TOUCHPAD_FIRMWARE 0x15
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#define I2C_ADDRESS_LEFT_ADDON_FIRMWARE 0x18
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#define I2C_ADDRESS_LEFT_ADDON_BOOTLOADER 0x20
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#define I2C_ADDRESS_LEFT_TOUCHPAD_FIRMWARE 0x25
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#define I2C_ADDRESS_RIGHT_ADDON_FIRMWARE 0x28
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#define I2C_ADDRESS_RIGHT_ADDON_BOOTLOADER 0x30
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#define I2C_ADDRESS_RIGHT_TOUCHPAD_BOOTLOADER 0x55
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#define I2C_ADDRESS_LEFT_TOUCHPAD_BOOTLOADER 0x65
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#define I2C_ADDRESS_LED_DRIVER_LEFT 0x74
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// Let's reserve this for another LED driver 0x75
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// Let's reserve this for another LED driver 0x76
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#define I2C_ADDRESS_LED_DRIVER_RIGHT 0x77
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// Reserved for 10-bit addressing 0x78
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// Reserved for 10-bit addressing 0x79
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// Reserved for 10-bit addressing 0x7A
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// Reserved for 10-bit addressing 0x7B
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// Reserved for future purposes 0x7C
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// Reserved for future purposes 0x7D
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// Reserved for future purposes 0x7E
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// Reserved for future purposes 0x7F
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// The EEPROM is featured separately as it's not connected to the main I2C bus.
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#define I2C_ADDRESS_EEPROM 0b1010000
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#define IS_I2C_LED_DRIVER_ADDRESS(address) \
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(I2C_ADDRESS_LED_DRIVER_LEFT <= (address) && (address) <= I2C_ADDRESS_LED_DRIVER_RIGHT)
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#endif
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