OpenThread

An open source implementation of Thread stack More...

Detailed Description

An open source implementation of Thread stack

See also

https://github.com/openthread/openthread

Thread is a mesh oriented network stack running for IEEE802.15.4 networks.

The RIOT port allows to directly call OpenThread API functions using Event Queue. For example:

#include "ot.h"
#include "openthread/thread.h"
 
static void _panid_handler(event_t *event);
static event_t event_panid = {
    .handler = _panid_handler
};
 
static void _panid_handler(event_t *event)
{
    (void) event;
    uint16_t panid = otLinkGetPanId(openthread_get_instance());
    do_something_with_panid(panid);
}
 
int main(void)
{
    event_post(openthread_get_evq(), &event_panid);
    return 0;
}

See also

https://openthread.io/releases/thread-reference-20180619

Files
file	ot.h

Data Structures
struct	serial_msg_t
	Struct containing a serial message. More...

Functions
void	recv_pkt (otInstance *aInstance, netdev_t *dev)
	Gets packet from driver and tells OpenThread about the reception.
void	send_pkt (otInstance *aInstance, netdev_t *dev, netdev_event_t event)
	Inform OpenThread when tx is finished.
event_queue_t *	openthread_get_evq (void)
	Get OpenThread event queue.
otInstance *	openthread_get_instance (void)
	Get pointer to the OpenThread instance.
void	openthread_bootstrap (void)
	Bootstrap OpenThread.
void	openthread_radio_init (netdev_t *dev, uint8_t *tb, uint8_t *rb)
	Init OpenThread radio.
int	openthread_netdev_init (char *stack, int stacksize, char priority, const char *name, netdev_t *netdev)
	Starts OpenThread thread.
void	ot_random_init (void)
	Init OpenThread random.

Openthread constants
#define	OPENTHREAD_NUMBER_OF_SERIAL_BUFFER   (1U)
	number of serial reception buffer
#define	OPENTHREAD_SIZEOF_LENGTH_AND_FREEBUFF   (4U)
	sizeof in bytes the two first members of she serial structure
#define	OPENTHREAD_SERIAL_BUFFER_SIZE   OPENTHREAD_SIZEOF_LENGTH_AND_FREEBUFF + 100
	sizeof the serial buffer
#define	OPENTHREAD_SERIAL_BUFFER__PAYLOAD_SIZE   OPENTHREAD_SERIAL_BUFFER_SIZE - OPENTHREAD_SIZEOF_LENGTH_AND_FREEBUFF
	sizeof the spinel payload data
#define	OPENTHREAD_ERROR_NO_EMPTY_SERIAL_BUFFER   -1
	error when no more buffer available
#define	OPENTHREAD_SERIAL_BUFFER_STATUS_FREE   (0x0001)
	serial buffer ready to use
#define	OPENTHREAD_SERIAL_BUFFER_STATUS_READY_TO_PROCESS   (0x0002)
	serial buffer ready for processing
#define	OPENTHREAD_SERIAL_BUFFER_STATUS_FULL   (0x0004)
	serial buffer payload full
#define	IEEE802154_MAX_LENGTH   (127U)
	Max length for IEEE802154 frame.
#define	OPENTHREAD_NETDEV_BUFLEN   (IEEE802154_MAX_LENGTH)
	Max length for a netdev buffer

Macro Definition Documentation

IEEE802154_MAX_LENGTH

#define IEEE802154_MAX_LENGTH   (127U)

Max length for IEEE802154 frame.

Definition at line 89 of file ot.h.

OPENTHREAD_ERROR_NO_EMPTY_SERIAL_BUFFER

#define OPENTHREAD_ERROR_NO_EMPTY_SERIAL_BUFFER   -1

error when no more buffer available

Definition at line 81 of file ot.h.

OPENTHREAD_NETDEV_BUFLEN

#define OPENTHREAD_NETDEV_BUFLEN   (IEEE802154_MAX_LENGTH)

Max length for a netdev buffer

Definition at line 91 of file ot.h.

OPENTHREAD_NUMBER_OF_SERIAL_BUFFER

#define OPENTHREAD_NUMBER_OF_SERIAL_BUFFER   (1U)

number of serial reception buffer

Definition at line 73 of file ot.h.

OPENTHREAD_SERIAL_BUFFER__PAYLOAD_SIZE

#define OPENTHREAD_SERIAL_BUFFER__PAYLOAD_SIZE   OPENTHREAD_SERIAL_BUFFER_SIZE - OPENTHREAD_SIZEOF_LENGTH_AND_FREEBUFF

sizeof the spinel payload data

Definition at line 79 of file ot.h.

OPENTHREAD_SERIAL_BUFFER_SIZE

#define OPENTHREAD_SERIAL_BUFFER_SIZE   OPENTHREAD_SIZEOF_LENGTH_AND_FREEBUFF + 100

sizeof the serial buffer

Definition at line 77 of file ot.h.

OPENTHREAD_SERIAL_BUFFER_STATUS_FREE

#define OPENTHREAD_SERIAL_BUFFER_STATUS_FREE   (0x0001)

serial buffer ready to use

Definition at line 83 of file ot.h.

OPENTHREAD_SERIAL_BUFFER_STATUS_FULL

#define OPENTHREAD_SERIAL_BUFFER_STATUS_FULL   (0x0004)

serial buffer payload full

Definition at line 87 of file ot.h.

OPENTHREAD_SERIAL_BUFFER_STATUS_READY_TO_PROCESS

#define OPENTHREAD_SERIAL_BUFFER_STATUS_READY_TO_PROCESS   (0x0002)

serial buffer ready for processing

Definition at line 85 of file ot.h.

OPENTHREAD_SIZEOF_LENGTH_AND_FREEBUFF

#define OPENTHREAD_SIZEOF_LENGTH_AND_FREEBUFF   (4U)

sizeof in bytes the two first members of she serial structure

Definition at line 75 of file ot.h.

Function Documentation

openthread_get_evq()

event_queue_t * openthread_get_evq

(

void

)

Get OpenThread event queue.

Returns

pointer to the event queue

openthread_get_instance()

otInstance * openthread_get_instance

(

void

)

Get pointer to the OpenThread instance.

Returns

pointer to the OpenThread instance

openthread_netdev_init()

int openthread_netdev_init	(	char *	stack,
		int	stacksize,
		char	priority,
		const char *	name,
		netdev_t *	netdev )

Starts OpenThread thread.

Parameters

[in]	stack	pointer to the stack designed for OpenThread
[in]	stacksize	size of the stack
[in]	priority	priority of the OpenThread stack
[in]	name	name of the OpenThread stack
[in]	netdev	pointer to the netdev interface

Returns

PID of OpenThread thread

-EINVAL if there was an error creating the thread

openthread_radio_init()

void openthread_radio_init	(	netdev_t *	dev,
		uint8_t *	tb,
		uint8_t *	rb )

Init OpenThread radio.

Parameters

[in]	dev	pointer to a netdev interface
[in]	tb	pointer to the TX buffer designed for OpenThread
[in]	rb	pointer to the RX buffer designed for Open_Thread

recv_pkt()

void recv_pkt	(	otInstance *	aInstance,
		netdev_t *	dev )

Gets packet from driver and tells OpenThread about the reception.

Parameters

[in]	aInstance	pointer to an OpenThread instance
[in]	dev	pointer to a netdev instance

send_pkt()

void send_pkt	(	otInstance *	aInstance,
		netdev_t *	dev,
		netdev_event_t	event )

Inform OpenThread when tx is finished.

Parameters

[in]	aInstance	pointer to an OpenThread instance
[in]	dev	pointer to a netdev interface
[in]	event	just occurred netdev event