Implementation of GNSS Driver. More...

#include "nmea_ubx.h"
#include <stdbool.h>
#include <stdint.h>
#include <string.h>
#include <stdio.h>
#include "no_os_util.h"
#include "no_os_uart.h"
#include "no_os_gpio.h"
#include "no_os_irq.h"
#include "no_os_delay.h"
#include "no_os_alloc.h"
#include "no_os_print_log.h"
#include <stdlib.h>
#include <errno.h>

Include dependency graph for nmea_ubx.c:

Functions
void	gnss_calculate_checksum (uint8_t data, uint16_t length, uint8_t checksumA, uint8_t *checksumB)
	Calculate UBX checksum.

int	gnss_verify_checksum (uint8_t *data, uint16_t length, uint8_t checksumA, uint8_t checksumB)
	Verify UBX checksum.

int	gnss_init (struct gnss_dev **device, struct gnss_init_param init_param)
	Initialize the GNSS device and configure communication.

int	gnss_remove (struct gnss_dev *dev)
	Remove the GNSS device and release allocated resources.

int	gnss_hw_reset (struct gnss_dev *dev)
	Reset the GNSS device using hardware reset pin.

int	gnss_ubx_sw_reset (struct gnss_dev *dev)
	Reset the device using SW reset.

int	gnss_write (struct gnss_dev dev, uint8_t data, uint16_t size)
	Write data to the device.

int	gnss_read (struct gnss_dev dev, uint8_t data, uint16_t size)
	Read data from the device.

int	gnss_ubx_send_packet (struct gnss_dev dev, uint8_t cls, uint8_t id, uint8_t payload, uint16_t length)
	Send UBX binary protocol packet to the GNSS device.

int	gnss_ubx_receive_packet (struct gnss_dev dev, struct gnss_ubx_packet packet)
	UBX packet receive.

int	gnss_ubx_wait_for_ack (struct gnss_dev *dev, uint8_t cls, uint8_t id)
	Wait for ACK/NAK.

int	gnss_ubx_set_val_no_ack (struct gnss_dev *dev, uint32_t key_id, uint64_t value, uint8_t value_size, uint8_t layer)
	Set configuration value by key (no ACK version)

int	gnss_ubx_set_val (struct gnss_dev *dev, uint32_t key_id, uint64_t value, uint8_t value_size, uint8_t layer)
	Set configuration value by key.

int	gnss_ubx_get_val (struct gnss_dev dev, uint32_t key_id, uint64_t value, uint8_t value_size, uint8_t layer)
	Get configuration value by key.

int	gnss_ubx_clr_save_load_config (struct gnss_dev *dev, uint8_t mask)
	Clear save load configuration from flash/BBR.

int	gnss_ubx_set_input_protocol_uart1 (struct gnss_dev *dev, enum gnss_protocol protocol, uint8_t enable, uint8_t layer)
	Configure input protocol on UART1.

int	gnss_ubx_set_output_protocol_uart1 (struct gnss_dev *dev, enum gnss_protocol protocol, uint8_t enable, uint8_t layer)
	Configure output protocol on UART1.

int	gnss_ubx_set_output_protocol_usb (struct gnss_dev *dev, enum gnss_protocol protocol, uint8_t enable, uint8_t layer)
	Configure output protocol USB.

int	gnss_ubx_set_input_protocol_uart2 (struct gnss_dev *dev, enum gnss_protocol protocol, uint8_t enable, uint8_t layer)
	Configure input protocol on UART2.

int	gnss_ubx_set_output_protocol_uart2 (struct gnss_dev *dev, enum gnss_protocol protocol, uint8_t enable, uint8_t layer)
	Configure output protocol on UART2.

int	gnss_ubx_configure_baudrate (struct gnss_dev *dev, uint32_t baudrate)
	Configure UBX device baudrate via UBX commands.

int	gnss_ubx_poll_nav_pvt (struct gnss_dev dev, struct gnss_ubx_nav_pvt nav_data)
	Poll navigation data (NAV-PVT)

int	gnss_ubx_poll_nav_timeutc (struct gnss_dev dev, struct gnss_ubx_nav_timeutc time_data)
	Poll time data (NAV-TIMEUTC)

int	gnss_get_nav_data (struct gnss_dev dev, struct gnss_ubx_nav_pvt nav_data)
	Get latest navigation data.

int	gnss_get_time_data (struct gnss_dev dev, struct gnss_ubx_nav_timeutc time_data)
	Get latest time data.

float	gnss_coord_to_degrees (int32_t coord)
	Convert coordinates from 1e-7 degrees to float degrees.

float	gnss_velocity_to_ms (int32_t vel)
	Convert velocity from cm/s to m/s.

float	gnss_time_acc_to_ms (uint32_t acc)
	Convert time accuracy from ns to ms.

float	gnss_pos_acc_to_m (uint32_t acc)
	Convert position accuracy from mm to m.

int32_t	gnss_ubx_get_nanoseconds (struct gnss_dev *dev)
	Get nanosecond fraction of current time from NAV-PVT data.

int	gnss_ubx_get_time_valid (struct gnss_dev dev, bool valid)
	Check if the current time is valid.

int	gnss_ubx_get_time_fully_resolved (struct gnss_dev dev, bool resolved)
	Check if the current time is fully resolved.

uint32_t	gnss_calculate_unix_epoch (uint16_t year, uint8_t month, uint8_t day, uint8_t hour, uint8_t minute, uint8_t second)
	Calculate Unix epoch from date/time components.

int	gnss_ubx_get_unix_epoch_with_micros (struct gnss_dev dev, uint32_t epoch, uint32_t *microseconds)
	Get Unix epoch time with microsecond precision.

int	gnss_ubx_get_precise_time (struct gnss_dev dev, struct gnss_precise_time precise_time)
	Get comprehensive precise time information.

int	gnss_ubx_configure_time_pulse (struct gnss_dev *dev, bool enable)
	Configure time pulse output for PPS (Pulse Per Second)

int	gnss_init_pps (struct gnss_dev *dev, bool enable)
	Configure PPS output with optimal settings for timing sync.

int	gnss_ubx_is_time_pulse_enabled (struct gnss_dev dev, bool enabled)
	Check if time pulse is currently enabled.

int	gnss_configure_baudrate_via_nmea (struct gnss_dev *dev, uint32_t baudrate)
	Configure baudrate via standard NMEA command for NMEA-only devices.

int	gnss_configure_messages_via_nmea (struct gnss_dev *dev, uint8_t rate_hz)
	Enable GPRMC/GNRMC message and disable others for clean timing via NMEA commands.

int	gnss_configure_nmea_device (struct gnss_dev *dev, uint32_t baudrate, uint8_t message_rate_hz)
	Configure NMEA-only device for timing operation.

int	gnss_parse_gprmc_sentence (const char sentence, struct gnss_nmea_time rmc_time)
	Parse GPRMC sentence for time and date information.

int	gnss_get_nmea_timing_data (struct gnss_dev dev, struct gnss_nmea_time rmc_time)
	Get timing data from NMEA-only device via GPRMC parsing.

int	gnss_refresh_timing_data (struct gnss_dev *dev)
	Refresh timing data from device (unified API for both UBX and NMEA devices)

int	gnss_get_unified_timing (struct gnss_dev dev, struct gnss_precise_time precise_time)
	Get comprehensive timing information (unified API for both device types)

int	gnss_is_timing_valid (struct gnss_dev dev, bool valid)
	Check if timing data is valid (unified API for both device types)

int	gnss_get_unix_epoch_unified (struct gnss_dev dev, uint32_t epoch, uint32_t *fractional_seconds)
	Get Unix epoch time with best available precision (unified API)

int	gnss_parse_gpgga_sentence (const char sentence, struct gnss_nmea_position position_data)
	Parse GPGGA sentence for position and fix information.

int	gnss_get_nmea_position_data (struct gnss_dev dev, struct gnss_nmea_position position_data)
	Get GPS fix quality and position data (NMEA-only devices)

Detailed Description

Implementation of GNSS Driver.

Author: Radu Etz (radu..nosp@m.etz@.nosp@m.analo.nosp@m.g.co.nosp@m.m)

SPDX-License-Identifier: BSD-3-Clause

Function Documentation

◆ gnss_calculate_checksum()

void gnss_calculate_checksum	(	uint8_t *	data,
		uint16_t	length,
		uint8_t *	checksumA,
		uint8_t *	checksumB )

Calculate UBX checksum.

Parameters

data	- Data buffer
length	- Data length
checksumA	- Checksum A output
checksumB	- Checksum B output

◆ gnss_calculate_unix_epoch()

uint32_t gnss_calculate_unix_epoch	(	uint16_t	year,
		uint8_t	month,
		uint8_t	day,
		uint8_t	hour,
		uint8_t	minute,
		uint8_t	second )

Calculate Unix epoch from date/time components.

Parameters

year	- Year (must be >= 1970)
month	- Month (1-12)
day	- Day of month
hour	- Hour (0-23)
minute	- Minute (0-59)
second	- Second (0-59)

Returns: Unix epoch in seconds, or 0 if year < 1970

◆ gnss_configure_baudrate_via_nmea()

int gnss_configure_baudrate_via_nmea	(	struct gnss_dev *	dev,
		uint32_t	baudrate )

Configure baudrate via standard NMEA command for NMEA-only devices.

Parameters

dev	- The device structure
baudrate	- Desired baudrate

Returns: 0 in case of success, negative error code otherwise

◆ gnss_configure_messages_via_nmea()

int gnss_configure_messages_via_nmea	(	struct gnss_dev *	dev,
		uint8_t	rate_hz )

Enable GPRMC/GNRMC message and disable others for clean timing via NMEA commands.

Parameters

dev	- The device structure
rate_hz	- GPRMC/GNRMC message rate in Hz (typically 1)

Returns: 0 in case of success, negative error code otherwise

◆ gnss_configure_nmea_device()

int gnss_configure_nmea_device	(	struct gnss_dev *	dev,
		uint32_t	baudrate,
		uint8_t	message_rate_hz )

Configure NMEA-only device for timing operation.

Parameters

dev	- The device structure
baudrate	- Desired baudrate
message_rate_hz	- GPRMC message rate

Returns: 0 in case of success, negative error code otherwise

◆ gnss_coord_to_degrees()

float gnss_coord_to_degrees ( int32_t coord )

Convert coordinates from 1e-7 degrees to float degrees.

Parameters

coord - Coordinate in 1e-7 degrees

Returns: Coordinate in degrees

◆ gnss_get_nav_data()

int gnss_get_nav_data	(	struct gnss_dev *	dev,
		struct gnss_ubx_nav_pvt *	nav_data )

Get latest navigation data.

Parameters

dev	- The device structure
nav_data	- Navigation data structure to fill

Returns: 0 in case of success, negative error code otherwise

◆ gnss_get_nmea_position_data()

int gnss_get_nmea_position_data	(	struct gnss_dev *	dev,
		struct gnss_nmea_position *	position_data )

Get GPS fix quality and position data (NMEA-only devices)

Parameters

dev	- The device structure
position_data	- Output structure for position data

Returns: 0 in case of success, negative error code otherwise

◆ gnss_get_nmea_timing_data()

int gnss_get_nmea_timing_data	(	struct gnss_dev *	dev,
		struct gnss_nmea_time *	rmc_time )

Get timing data from NMEA-only device via GPRMC parsing.

Parameters

dev	- The device structure
rmc_time	- Output structure for time data

Returns: 0 in case of success, negative error code otherwise

◆ gnss_get_time_data()

int gnss_get_time_data	(	struct gnss_dev *	dev,
		struct gnss_ubx_nav_timeutc *	time_data )

Get latest time data.

Parameters

dev	- The device structure
time_data	- Time data structure to fill

Returns: 0 in case of success, negative error code otherwise

◆ gnss_get_unified_timing()

int gnss_get_unified_timing	(	struct gnss_dev *	dev,
		struct gnss_precise_time *	precise_time )

Get comprehensive timing information (unified API for both device types)

Parameters

dev	- The device structure
precise_time	- Structure to store precise time data

Returns: 0 in case of success, negative error code otherwise

◆ gnss_get_unix_epoch_unified()

int gnss_get_unix_epoch_unified	(	struct gnss_dev *	dev,
		uint32_t *	epoch,
		uint32_t *	fractional_seconds )

Get Unix epoch time with best available precision (unified API)

Parameters

dev	- The device structure
epoch	- Pointer to store Unix epoch time in seconds
fractional_seconds	- Pointer to store fractional seconds (microseconds)

Returns: 0 in case of success, negative error code otherwise

◆ gnss_hw_reset()

int gnss_hw_reset ( struct gnss_dev * dev )

Reset the GNSS device using hardware reset pin.

Parameters

dev	- The device structure.

Returns: 0 in case of success, negative error code otherwise.

◆ gnss_init()

int gnss_init	(	struct gnss_dev **	device,
		struct gnss_init_param	init_param )

Initialize the GNSS device and configure communication.

Parameters

device	- The device structure.
init_param	- The structure that contains the device initial parameters.

Returns: 0 in case of success, negative error code otherwise.

◆ gnss_init_pps()

int gnss_init_pps	(	struct gnss_dev *	dev,
		bool	enable )

Configure PPS output with optimal settings for timing sync.

Parameters

dev	- The device structure
enable	- Enable/disable PPS output

Returns: 0 in case of success, negative error code otherwise

◆ gnss_is_timing_valid()

int gnss_is_timing_valid	(	struct gnss_dev *	dev,
		bool *	valid )

Check if timing data is valid (unified API for both device types)

Parameters

dev	- The device structure
valid	- Pointer to store validity status

Returns: 0 in case of success, negative error code otherwise

◆ gnss_parse_gpgga_sentence()

int gnss_parse_gpgga_sentence	(	const char *	sentence,
		struct gnss_nmea_position *	position_data )

Parse GPGGA sentence for position and fix information.

Parameters

sentence	- Complete GPGGA sentence string
position_data	- Output structure for parsed position data

Returns: 0 in case of success, negative error code otherwise

◆ gnss_parse_gprmc_sentence()

int gnss_parse_gprmc_sentence	(	const char *	sentence,
		struct gnss_nmea_time *	rmc_time )

Parse GPRMC sentence for time and date information.

Parameters

sentence	- Complete GPRMC sentence string
rmc_time	- Output structure for parsed time data

Returns: 0 in case of success, negative error code otherwise

◆ gnss_pos_acc_to_m()

float gnss_pos_acc_to_m ( uint32_t acc )

Convert position accuracy from mm to m.

Parameters

acc	- Position accuracy in mm

Returns: Position accuracy in m

◆ gnss_read()

int gnss_read	(	struct gnss_dev *	dev,
		uint8_t *	data,
		uint16_t	size )

Read data from the device.

Parameters

dev	- The device structure
data	- Data buffer to read into
size	- Number of bytes to read

Returns: number of bytes read in case of succes, negative error code otherwise

◆ gnss_refresh_timing_data()

int gnss_refresh_timing_data ( struct gnss_dev * dev )

Refresh timing data from device (unified API for both UBX and NMEA devices)

Parameters

dev	- The device structure

Returns: 0 in case of success, negative error code otherwise

◆ gnss_remove()

int gnss_remove ( struct gnss_dev * dev )

Remove the GNSS device and release allocated resources.

Parameters

dev	- The device structure.

Returns: 0 in case of success, negative error code otherwise.

◆ gnss_time_acc_to_ms()

float gnss_time_acc_to_ms ( uint32_t acc )

Convert time accuracy from ns to ms.

Parameters

acc	- Time accuracy in ns

Returns: Time accuracy in ms

◆ gnss_ubx_clr_save_load_config()

int gnss_ubx_clr_save_load_config	(	struct gnss_dev *	dev,
		uint8_t	mask )

Clear save load configuration from flash/BBR.

Parameters

dev	- The device structure
mask	- Load mask (which layers to load)

Returns: 0 in case of success, negative error code otherwise

◆ gnss_ubx_configure_baudrate()

int gnss_ubx_configure_baudrate	(	struct gnss_dev *	dev,
		uint32_t	baudrate )

Configure UBX device baudrate via UBX commands.

Parameters

dev	- The device structure
baudrate	- Desired baudrate

Returns: 0 in case of success, negative error code otherwise

◆ gnss_ubx_configure_time_pulse()

int gnss_ubx_configure_time_pulse	(	struct gnss_dev *	dev,
		bool	enable )

Configure time pulse output for PPS (Pulse Per Second)

Parameters

dev	- The device structure
enable	- Enable/disable time pulse

Returns: 0 in case of success, negative error code otherwise

◆ gnss_ubx_get_nanoseconds()

int32_t gnss_ubx_get_nanoseconds ( struct gnss_dev * dev )

Get nanosecond fraction of current time from NAV-PVT data.

Parameters

dev	- The device structure

Returns: Nanosecond fraction (can be negative), 0 on error

◆ gnss_ubx_get_precise_time()

int gnss_ubx_get_precise_time	(	struct gnss_dev *	dev,
		struct gnss_precise_time *	precise_time )

Get comprehensive precise time information.

Parameters

dev	- The device structure
precise_time	- Structure to store precise time data

Returns: 0 in case of success, negative error code otherwise

◆ gnss_ubx_get_time_fully_resolved()

int gnss_ubx_get_time_fully_resolved	(	struct gnss_dev *	dev,
		bool *	resolved )

Check if the current time is fully resolved.

Parameters

dev	- The device structure
resolved	- Pointer to store resolved status

Returns: 0 in case of success, negative error code otherwise

◆ gnss_ubx_get_time_valid()

int gnss_ubx_get_time_valid	(	struct gnss_dev *	dev,
		bool *	valid )

Check if the current time is valid.

Parameters

dev	- The device structure
valid	- Pointer to store validity status

Returns: 0 in case of success, negative error code otherwise

◆ gnss_ubx_get_unix_epoch_with_micros()

int gnss_ubx_get_unix_epoch_with_micros	(	struct gnss_dev *	dev,
		uint32_t *	epoch,
		uint32_t *	microseconds )

Get Unix epoch time with microsecond precision.

Parameters

dev	- The device structure
epoch	- Pointer to store Unix epoch time in seconds
microseconds	- Pointer to store microsecond fraction

Returns: 0 in case of success, negative error code otherwise

◆ gnss_ubx_get_val()

int gnss_ubx_get_val	(	struct gnss_dev *	dev,
		uint32_t	key_id,
		uint64_t *	value,
		uint8_t	value_size,
		uint8_t	layer )

Get configuration value by key.

Parameters

dev	- The device structure
key_id	- Configuration key ID
value	- Pointer to store the value
value_size	- Size of value (1, 2, 4, or 8 bytes)
layer	- Configuration layer (RAM, BBR, Flash)

Returns: 0 in case of success, negative error code otherwise

◆ gnss_ubx_is_time_pulse_enabled()

int gnss_ubx_is_time_pulse_enabled	(	struct gnss_dev *	dev,
		bool *	enabled )

Check if time pulse is currently enabled.

Parameters

dev	- The device structure
enabled	- Pointer to store enabled status

Returns: 0 in case of success, negative error code otherwise

◆ gnss_ubx_poll_nav_pvt()

int gnss_ubx_poll_nav_pvt	(	struct gnss_dev *	dev,
		struct gnss_ubx_nav_pvt *	nav_data )

Poll navigation data (NAV-PVT)

Parameters

dev	- The device structure
nav_data	- Navigation data structure to fill

Returns: 0 in case of success, negative error code otherwise

◆ gnss_ubx_poll_nav_timeutc()

int gnss_ubx_poll_nav_timeutc	(	struct gnss_dev *	dev,
		struct gnss_ubx_nav_timeutc *	time_data )

Poll time data (NAV-TIMEUTC)

Parameters

dev	- The device structure
time_data	- Time data structure to fill

Returns: 0 in case of success, negative error code otherwise

◆ gnss_ubx_receive_packet()

int gnss_ubx_receive_packet	(	struct gnss_dev *	dev,
		struct gnss_ubx_packet *	packet )

UBX packet receive.

Parameters

dev	- The device structure
packet	- Packet structure to fill

Returns: 0 in case of success, negative error code otherwise

◆ gnss_ubx_send_packet()

int gnss_ubx_send_packet	(	struct gnss_dev *	dev,
		uint8_t	cls,
		uint8_t	id,
		uint8_t *	payload,
		uint16_t	length )

Send UBX binary protocol packet to the GNSS device.

Parameters

dev	- The device structure.
cls	- UBX message class.
id	- UBX message ID.
payload	- Pointer to payload data buffer.
length	- Payload length in bytes.

Returns: ret 0 in case of success, negative error code otherwise.

◆ gnss_ubx_set_input_protocol_uart1()

int gnss_ubx_set_input_protocol_uart1	(	struct gnss_dev *	dev,
		enum gnss_protocol	protocol,
		uint8_t	enable,
		uint8_t	layer )

Configure input protocol on UART1.

Parameters

dev	- The device structure
protocol	- Protocol type
enable	- Enable/disable
layer	- Configuration layer

Returns: 0 in case of success, negative error code otherwise

◆ gnss_ubx_set_input_protocol_uart2()

int gnss_ubx_set_input_protocol_uart2	(	struct gnss_dev *	dev,
		enum gnss_protocol	protocol,
		uint8_t	enable,
		uint8_t	layer )

Configure input protocol on UART2.

Parameters

dev	- The device structure
protocol	- Protocol type
enable	- Enable/disable
layer	- Configuration layer

Returns: 0 in case of success, negative error code otherwise

◆ gnss_ubx_set_output_protocol_uart1()

int gnss_ubx_set_output_protocol_uart1	(	struct gnss_dev *	dev,
		enum gnss_protocol	protocol,
		uint8_t	enable,
		uint8_t	layer )

Configure output protocol on UART1.

Parameters

dev	- The device structure
protocol	- Protocol type
enable	- Enable/disable
layer	- Configuration layer

Returns: 0 in case of success, negative error code otherwise

◆ gnss_ubx_set_output_protocol_uart2()

int gnss_ubx_set_output_protocol_uart2	(	struct gnss_dev *	dev,
		enum gnss_protocol	protocol,
		uint8_t	enable,
		uint8_t	layer )

Configure output protocol on UART2.

Parameters

dev	- The device structure
protocol	- Protocol type
enable	- Enable/disable
layer	- Configuration layer

Returns: 0 in case of success, negative error code otherwise

◆ gnss_ubx_set_output_protocol_usb()

int gnss_ubx_set_output_protocol_usb	(	struct gnss_dev *	dev,
		enum gnss_protocol	protocol,
		uint8_t	enable,
		uint8_t	layer )

Configure output protocol USB.

Parameters

dev	- The device structure
protocol	- Protocol type
enable	- Enable/disable
layer	- Configuration layer

Returns: 0 in case of success, negative error code otherwise

◆ gnss_ubx_set_val()

int gnss_ubx_set_val	(	struct gnss_dev *	dev,
		uint32_t	key_id,
		uint64_t	value,
		uint8_t	value_size,
		uint8_t	layer )

Set configuration value by key.

Parameters

dev	- The device structure
key_id	- Configuration key ID
value	- Value to set
value_size	- Size of value (1, 2, 4, or 8 bytes)
layer	- Configuration layer (RAM, BBR, Flash)

Returns: 0 in case of success, negative error code otherwise

◆ gnss_ubx_set_val_no_ack()

int gnss_ubx_set_val_no_ack	(	struct gnss_dev *	dev,
		uint32_t	key_id,
		uint64_t	value,
		uint8_t	value_size,
		uint8_t	layer )

Set configuration value by key (no ACK version)

Parameters

dev	- The device structure
key_id	- Configuration key ID
value	- Value to set
value_size	- Size of value (1, 2, 4, or 8 bytes)
layer	- Configuration layer (RAM, BBR, Flash)

Returns: 0 in case of success, negative error code otherwise

◆ gnss_ubx_sw_reset()

int gnss_ubx_sw_reset ( struct gnss_dev * dev )

Reset the device using SW reset.

Parameters

dev	- The device structure

Returns: 0 in case of success, negative error code otherwise

◆ gnss_ubx_wait_for_ack()

int gnss_ubx_wait_for_ack	(	struct gnss_dev *	dev,
		uint8_t	cls,
		uint8_t	id )

Wait for ACK/NAK.

Parameters

dev	- The device structure
cls	- Expected class
id	- Expected message ID

Returns: 0 in case of success, negative error code otherwise

◆ gnss_velocity_to_ms()

float gnss_velocity_to_ms ( int32_t vel )

Convert velocity from cm/s to m/s.

Parameters

vel	- Velocity in cm/s

Returns: Velocity in m/s

◆ gnss_verify_checksum()

int gnss_verify_checksum	(	uint8_t *	data,
		uint16_t	length,
		uint8_t	checksumA,
		uint8_t	checksumB )

Verify UBX checksum.

Parameters

data	- Data buffer
length	- Data length
checksumA	- Expected checksum A
checksumB	- Expected checksum B

Returns: 0 in case of success, negative error code otherwise

◆ gnss_write()

int gnss_write	(	struct gnss_dev *	dev,
		uint8_t *	data,
		uint16_t	size )

Write data to the device.

Parameters

dev	- The device structure
data	- Data buffer to write
size	- Number of bytes to write

Returns: 0 in case of success, negative error code otherwise

Functions

Detailed Description

Function Documentation

◆ gnss_calculate_checksum()

◆ gnss_calculate_unix_epoch()

◆ gnss_configure_baudrate_via_nmea()

◆ gnss_configure_messages_via_nmea()

◆ gnss_configure_nmea_device()

◆ gnss_coord_to_degrees()

◆ gnss_get_nav_data()

◆ gnss_get_nmea_position_data()

◆ gnss_get_nmea_timing_data()

◆ gnss_get_time_data()

◆ gnss_get_unified_timing()

◆ gnss_get_unix_epoch_unified()

◆ gnss_hw_reset()

◆ gnss_init()

◆ gnss_init_pps()

◆ gnss_is_timing_valid()

◆ gnss_parse_gpgga_sentence()

◆ gnss_parse_gprmc_sentence()

◆ gnss_pos_acc_to_m()

◆ gnss_read()

◆ gnss_refresh_timing_data()

◆ gnss_remove()

◆ gnss_time_acc_to_ms()

◆ gnss_ubx_clr_save_load_config()

◆ gnss_ubx_configure_baudrate()

◆ gnss_ubx_configure_time_pulse()

◆ gnss_ubx_get_nanoseconds()

◆ gnss_ubx_get_precise_time()

◆ gnss_ubx_get_time_fully_resolved()

◆ gnss_ubx_get_time_valid()

◆ gnss_ubx_get_unix_epoch_with_micros()

◆ gnss_ubx_get_val()

◆ gnss_ubx_is_time_pulse_enabled()

◆ gnss_ubx_poll_nav_pvt()

◆ gnss_ubx_poll_nav_timeutc()

◆ gnss_ubx_receive_packet()

◆ gnss_ubx_send_packet()

◆ gnss_ubx_set_input_protocol_uart1()

◆ gnss_ubx_set_input_protocol_uart2()

◆ gnss_ubx_set_output_protocol_uart1()

◆ gnss_ubx_set_output_protocol_uart2()

◆ gnss_ubx_set_output_protocol_usb()

◆ gnss_ubx_set_val()

◆ gnss_ubx_set_val_no_ack()

◆ gnss_ubx_sw_reset()

◆ gnss_ubx_wait_for_ack()

◆ gnss_velocity_to_ms()

◆ gnss_verify_checksum()

◆ gnss_write()