Zephyr API Documentation 3.7.99
A Scalable Open Source RTOS
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I3C Address-related Helper Code . More...
Data Structures | |
struct | i3c_addr_slots |
Structure to keep track of addresses on I3C bus. More... | |
Macros | |
#define | I3C_BROADCAST_ADDR 0x7E |
Broadcast Address on I3C bus. | |
#define | I3C_MAX_ADDR 0x7F |
Maximum value of device addresses. | |
Enumerations | |
enum | i3c_addr_slot_status { I3C_ADDR_SLOT_STATUS_FREE = 0U , I3C_ADDR_SLOT_STATUS_RSVD , I3C_ADDR_SLOT_STATUS_I3C_DEV , I3C_ADDR_SLOT_STATUS_I2C_DEV , I3C_ADDR_SLOT_STATUS_MASK = 0x03U } |
Enum to indicate whether an address is reserved, has I2C/I3C device attached, or no device attached. More... | |
Functions | |
int | i3c_addr_slots_init (const struct device *dev) |
Initialize the I3C address slots struct. | |
void | i3c_addr_slots_set (struct i3c_addr_slots *slots, uint8_t dev_addr, enum i3c_addr_slot_status status) |
Set the address status of a device. | |
enum i3c_addr_slot_status | i3c_addr_slots_status (struct i3c_addr_slots *slots, uint8_t dev_addr) |
Get the address status of a device. | |
bool | i3c_addr_slots_is_free (struct i3c_addr_slots *slots, uint8_t dev_addr) |
Check if the address is free. | |
uint8_t | i3c_addr_slots_next_free_find (struct i3c_addr_slots *slots, uint8_t start_addr) |
Find the next free address. | |
static void | i3c_addr_slots_mark_free (struct i3c_addr_slots *addr_slots, uint8_t addr) |
Mark the address as free (not used) in device list. | |
static void | i3c_addr_slots_mark_rsvd (struct i3c_addr_slots *addr_slots, uint8_t addr) |
Mark the address as reserved in device list. | |
static void | i3c_addr_slots_mark_i3c (struct i3c_addr_slots *addr_slots, uint8_t addr) |
Mark the address as I3C device in device list. | |
static void | i3c_addr_slots_mark_i2c (struct i3c_addr_slots *addr_slots, uint8_t addr) |
Mark the address as I2C device in device list. | |
I3C Address-related Helper Code .
#define I3C_BROADCAST_ADDR 0x7E |
#include <zephyr/drivers/i3c/addresses.h>
Broadcast Address on I3C bus.
#define I3C_MAX_ADDR 0x7F |
#include <zephyr/drivers/i3c/addresses.h>
Maximum value of device addresses.
enum i3c_addr_slot_status |
#include <zephyr/drivers/i3c/addresses.h>
Enum to indicate whether an address is reserved, has I2C/I3C device attached, or no device attached.
int i3c_addr_slots_init | ( | const struct device * | dev | ) |
#include <zephyr/drivers/i3c/addresses.h>
Initialize the I3C address slots struct.
This clears out the assigned address bits, and set the reserved address bits according to the I3C specification.
dev | Pointer to controller device driver instance. |
0 | if successful. |
-EINVAL | if duplicate addresses. |
bool i3c_addr_slots_is_free | ( | struct i3c_addr_slots * | slots, |
uint8_t | dev_addr ) |
#include <zephyr/drivers/i3c/addresses.h>
Check if the address is free.
slots | Pointer to the address slots structure. |
dev_addr | Device address. |
true | if address is free. |
false | if address is not free. |
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inlinestatic |
#include <zephyr/drivers/i3c/addresses.h>
Mark the address as free (not used) in device list.
addr_slots | Pointer to the address slots struct. |
addr | Device address. |
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inlinestatic |
#include <zephyr/drivers/i3c/addresses.h>
Mark the address as I2C device in device list.
addr_slots | Pointer to the address slots struct. |
addr | Device address. |
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inlinestatic |
#include <zephyr/drivers/i3c/addresses.h>
Mark the address as I3C device in device list.
addr_slots | Pointer to the address slots struct. |
addr | Device address. |
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inlinestatic |
#include <zephyr/drivers/i3c/addresses.h>
Mark the address as reserved in device list.
addr_slots | Pointer to the address slots struct. |
addr | Device address. |
uint8_t i3c_addr_slots_next_free_find | ( | struct i3c_addr_slots * | slots, |
uint8_t | start_addr ) |
#include <zephyr/drivers/i3c/addresses.h>
Find the next free address.
This can be used to find the next free address that can be assigned to a new device.
slots | Pointer to the address slots structure. |
start_addr | Where to start searching |
void i3c_addr_slots_set | ( | struct i3c_addr_slots * | slots, |
uint8_t | dev_addr, | ||
enum i3c_addr_slot_status | status ) |
#include <zephyr/drivers/i3c/addresses.h>
Set the address status of a device.
slots | Pointer to the address slots structure. |
dev_addr | Device address. |
status | New status for the address dev_addr . |
enum i3c_addr_slot_status i3c_addr_slots_status | ( | struct i3c_addr_slots * | slots, |
uint8_t | dev_addr ) |
#include <zephyr/drivers/i3c/addresses.h>
Get the address status of a device.
slots | Pointer to the address slots structure. |
dev_addr | Device address. |
dev_addr
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