Syslink protocol handling and functionalities. More...

#include "modules/datalink/bitcraze/syslink_dl.h"
#include "modules/energy/electrical.h"
#include "mcu_periph/uart.h"
#include <string.h>
#include "led.h"
#include "pprz_mutex.h"

Include dependency graph for syslink_dl.c:

Go to the source code of this file.

Functions
	PPRZ_MUTEX (syslink_tx_mtx)
	Protect syslink TX with Mutex when using RTOS. More...

static void	send_message (syslink_message_t *msg)
	Send a syslink message. More...

static void	handle_battery (syslink_message_t *msg)
	Handle battery message. More...

static void	handle_raw_other (syslink_message_t *msg)
	Handle various raw messages. More...

static void	handle_raw (syslink_message_t *msg)
	Handle raw datalink. More...

static void	handle_radio (syslink_message_t *msg)

static void	handle_new_msg (syslink_message_t *msg)
	New RX message. More...

static int	syslink_check_free_space (struct syslink_dl s, long fd UNUSED, uint16_t len)
	Implementation of syslink as generic device. More...

static void	syslink_put_buffer (struct syslink_dl s, long fd UNUSED, const uint8_t data, uint16_t len)

static void	syslink_put_byte (struct syslink_dl *s, long fd, const uint8_t b)

static void	syslink_send_message (struct syslink_dl *s UNUSED, long fd UNUSED)

static uint8_t	syslink_getch (struct syslink_dl *s)

static int	syslink_char_available (struct syslink_dl *s)

void	syslink_dl_init (void)
	Init function. More...

void	syslink_dl_periodic (void)
	Periodic function. More...

void	syslink_dl_event (void)
	Datalink event. More...

Variables
struct syslink_dl	syslink

Detailed Description

Syslink protocol handling and functionalities.

Definition in file syslink_dl.c.

Function Documentation

◆ handle_battery()

static void handle_battery ( syslink_message_t * msg )

static

Handle battery message.

Definition at line 66 of file syslink_dl.c.

References syslink_dl::charging, electrical, msg, syslink_dl::powered, syslink, and Electrical::vsupply.

Referenced by handle_new_msg().

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◆ handle_new_msg()

static void handle_new_msg ( syslink_message_t * msg )

static

New RX message.

Definition at line 258 of file syslink_dl.c.

References handle_battery(), handle_radio(), handle_raw(), msg, SYSLINK_GROUP, SYSLINK_OW, SYSLINK_PM_BATTERY_STATE, SYSLINK_PM_ONOFF_SWITCHOFF, SYSLINK_RADIO, and SYSLINK_RADIO_RAW.

Referenced by syslink_dl_event().

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◆ handle_radio()

static void handle_radio ( syslink_message_t * msg )

static

Definition at line 238 of file syslink_dl.c.

References msg, syslink_dl::rssi, rssi, syslink, SYSLINK_RADIO_ADDRESS, SYSLINK_RADIO_CHANNEL, SYSLINK_RADIO_DATARATE, and SYSLINK_RADIO_RSSI.

Referenced by handle_new_msg().

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◆ handle_raw()

static void handle_raw ( syslink_message_t * msg )

static

Handle raw datalink.

From Bitcraze documentation:

This packet carries the raw radio packet. The NRF51 acts as a radio bridge. Because the NRF51 does not have much memory and the STM32 is capable of bursting a lot of data a flow control rules has been made: The STM32 is allowed to send a RADIO_RAW packet only when one RADIO_RAW packet has been received.

The NRF51 is regularly sending CRTP NULL packet or empty packets to the STM32 to get the communication working both ways.

Note: So far RADIO_RAW is the only syslink packet that has flow control constrain, all other packets can be sent full duplex at any moment.

Definition at line 186 of file syslink_dl.c.

References CRTP_BUF_LEN, CRTP_NULL, CRTP_PORT_COMMANDER, CRTP_PORT_PPRZLINK, crtp_message_t::data, syslink_dl::device, handle_raw_other(), if(), syslink_message_t::length, msg, syslink_dl::msg_tx, PPRZ_MUTEX_LOCK, PPRZ_MUTEX_UNLOCK, syslink_dl::rx_buf, syslink_dl::rx_insert_idx, send_message(), crtp_message_t::size, split(), syslink, SYSLINK_RADIO_RAW, SYSLINK_RX_BUF_LEN, syslink_dl::tx_extract_idx, syslink_dl::tx_insert_idx, and syslink_message_t::type.