Contiki-NG
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Files | |
file | frame802154.h |
802.15.4 frame creation and parsing functions | |
Data Structures | |
struct | frame802154_fcf_t |
The IEEE 802.15.4 frame has a number of constant/fixed fields that can be counted to make frame construction and max payload calculations easier. More... | |
struct | frame802154_scf_t |
802.15.4 security control bitfield. More... | |
struct | frame802154_aux_hdr_t |
802.15.4 Aux security header More... | |
struct | frame802154_t |
Parameters used by the frame802154_create() function. More... | |
Variables | |
static uint16_t | mac_pan_id = IEEE802154_PANID |
The 16-bit identifier of the PAN on which the device is operating. | |
FCF element values definitions | |
These are some definitions of values used in the FCF. See the 802.15.4 spec for details. | |
int | frame802154_hdrlen (frame802154_t *p) |
Calculates the length of the frame header. | |
int | frame802154_create (frame802154_t *p, uint8_t *buf) |
Creates a frame for transmission over the air. | |
int | frame802154_parse (uint8_t *data, int len, frame802154_t *pf) |
Parses an input frame. | |
#define | FRAME802154_NOADDR (0x00) |
Only valid for ACK or Beacon frames. | |
int frame802154_create | ( | frame802154_t * | p, |
uint8_t * | buf ) |
Creates a frame for transmission over the air.
This function is meant to be called by a higher level function, that interfaces to a MAC.
p | Pointer to frame802154_t struct, which specifies the frame to send. |
buf | Pointer to the buffer to use for the frame. |
Definition at line 387 of file frame802154.c.
References frame802154_t::aux_hdr, frame802154_t::dest_addr, frame802154_t::dest_pid, frame802154_t::fcf, frame802154_aux_hdr_t::frame_counter, frame802154_scf_t::frame_counter_size, frame802154_scf_t::frame_counter_suppression, frame802154_scf_t::key_id_mode, frame802154_aux_hdr_t::key_index, frame802154_aux_hdr_t::key_source, frame802154_aux_hdr_t::security_control, frame802154_scf_t::security_level, frame802154_t::seq, frame802154_t::src_addr, and frame802154_t::src_pid.
Referenced by tsch_packet_create_eack().
int frame802154_hdrlen | ( | frame802154_t * | p | ) |
Calculates the length of the frame header.
This function is meant to be called by a higher level function, that interfaces to a MAC.
p | Pointer to frame802154_t_t struct, which specifies the frame to send. |
Definition at line 353 of file frame802154.c.
Referenced by tsch_packet_create_eack().
int frame802154_parse | ( | uint8_t * | data, |
int | len, | ||
frame802154_t * | pf ) |
Parses an input frame.
Scans the input frame to find each section, and stores the information of each section in a frame802154_t structure.
data | The input data from the radio chip. |
len | The size of the input data |
pf | The frame802154_t struct to store the parsed frame information. |
Definition at line 494 of file frame802154.c.
References frame802154_t::aux_hdr, frame802154_t::dest_addr, frame802154_fcf_t::dest_addr_mode, frame802154_t::dest_pid, frame802154_t::fcf, frame802154_aux_hdr_t::frame_counter, frame802154_scf_t::frame_counter_size, frame802154_scf_t::frame_counter_suppression, frame802154_scf_t::key_id_mode, frame802154_aux_hdr_t::key_index, frame802154_aux_hdr_t::key_source, linkaddr_copy(), linkaddr_null, frame802154_t::payload, frame802154_t::payload_len, frame802154_aux_hdr_t::security_control, frame802154_fcf_t::security_enabled, frame802154_scf_t::security_level, frame802154_t::seq, frame802154_fcf_t::sequence_number_suppression, frame802154_t::src_addr, frame802154_fcf_t::src_addr_mode, and frame802154_t::src_pid.
Referenced by sixtop_input(), tsch_packet_parse_eack(), tsch_packet_parse_eb(), and tsch_security_secure_frame().
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The 16-bit identifier of the PAN on which the device is operating.
If this value is 0xffff, the device is not associated.
Definition at line 76 of file frame802154.c.