Functions
fsp_err_t	R_PTP_Open (ptp_ctrl_t const p_ctrl, ptp_cfg_t const const p_cfg)

fsp_err_t	R_PTP_MacAddrSet (ptp_ctrl_t const p_ctrl, uint8_t const const p_mac_addr)

fsp_err_t	R_PTP_IpAddrSet (ptp_ctrl_t *const p_ctrl, uint32_t ip_addr)

fsp_err_t	R_PTP_LocalClockIdSet (ptp_ctrl_t const p_ctrl, uint8_t const const p_clock_id)

fsp_err_t	R_PTP_MasterClockIdSet (ptp_ctrl_t const p_ctrl, uint8_t const const p_clock_id, uint16_t port_id)

fsp_err_t	R_PTP_MessageFlagsSet (ptp_ctrl_t *const p_ctrl, ptp_message_type_t message_type, ptp_message_flags_t flags)

fsp_err_t	R_PTP_CurrentUtcOffsetSet (ptp_ctrl_t *const p_ctrl, uint16_t offset)

fsp_err_t	R_PTP_PortStateSet (ptp_ctrl_t *const p_ctrl, uint32_t state)

fsp_err_t	R_PTP_MessageSend (ptp_ctrl_t const p_ctrl, ptp_message_t const const p_message, uint8_t const *const p_tlv_data, uint16_t tlv_data_size)

fsp_err_t	R_PTP_LocalClockValueSet (ptp_ctrl_t const p_ctrl, ptp_time_t const const p_time)

fsp_err_t	R_PTP_LocalClockValueGet (ptp_ctrl_t const p_ctrl, ptp_time_t const p_time)

fsp_err_t	R_PTP_PulseTimerCommonConfig (ptp_ctrl_t const p_ctrl, ptp_pulse_timer_common_cfg_t const p_timer_cfg)

fsp_err_t	R_PTP_PulseTimerEnable (ptp_ctrl_t const p_ctrl, uint32_t channel, ptp_pulse_timer_cfg_t const p_timer_cfg)

fsp_err_t	R_PTP_PulseTimerDisable (ptp_ctrl_t *const p_ctrl, uint32_t channel)

fsp_err_t	R_PTP_Close (ptp_ctrl_t *const p_ctrl)

fsp_err_t	R_PTP_BestMasterClock (ptp_message_t const const p_announce1, ptp_message_t const const p_announce2, int8_t *const p_comparison)

Detailed Description

Driver for the PTP peripheral on RA MCUs. This module implements the PTP Interface.

Overview

PTP allows for multiple devices on a network to synchronize their clocks with very high precision. The PTP peripheral generates and processes PTP messages automatically. In slave mode, it also corrects the local time in order to adjust for any offset from the master clock time.

Features

Ordinary clock
- Master mode
- Slave mode
Peer-to-peer
End-to-end
Frame fromats
- Ethernet II frames
- IEEE802.3 + LLC + SNAP frames
- IPv4 + UDP
Clock correction modes
- Mode 1: Add the offsetFromMaster value to the local time whenever it is updated.
- Mode 2: Calculate a clock gradient and continuously adjust the local time in order to minimize the offsetFromMaster value.

Configuration

Build Time Configurations for r_ptp

The following build time configurations are defined in fsp_cfg/r_ptp_cfg.h:

Configuration	Options	Default	Description
Parameter Checking	Default (BSP) Enabled Disabled	Default (BSP)	If selected code for parameter checking is included in the build.

Configurations for Networking > PTP (r_ptp)

This module can be added to the Stacks tab via New Stack > Networking > PTP (r_ptp).

Configuration	Options	Default	Description
Clock Properties
Priority 1	Value must in the range [0,255].	128	Priority1 field advertised in generated announce packets.
Class	Value must in the range [0,255].	248	Class field advertised in generated announce packets.
Accuracy	Value must in the range [0,255].	0xFE	Accuracy field advertised in generated announce packets.
Variance	Value must in the range [0,65535].	0xFFFF	Variance field advertised in generated announce packets.
Priority 2	Value must in the range [0,255].	128	Priority2 field advertised in generated announce packets.
Time Source	Value must in the range [0,255].	160	Time Source field advertised in generated announce packets.
Ethernet
Multicast Filter MAC address	Must be a valid MAC address	01:1B:19:00:00:00	In Multicast Filtered mode, only multicast addresses that match this address are received by the ETHERC EDMAC.
Primary Destination MAC address	Must be a valid MAC address	01:1B:19:00:00:00	The destination MAC address for primary PTP messages.
PDelay Destination MAC address	Must be a valid MAC address	01:80:C2:00:00:0E	The destination MAC address for PDelay messages.
IP
Primary Destination IP address	Must be a valid IP address	224.0.1.129	The destination IPv4 address for primary messages.
PDelay Destination IP address	Must be a valid IP address	224.0.0.107	The destination IPv4 address for PDelay messages.
Event Message TOS	Value must in the range [0,255].	0	The IP packet TOS for event messages.
General Message TOS	Value must in the range [0,255].	0	The IP packet TOS for general messages.
Primary Message TTL	Value must in the range [0,255].	1	The IP packet TTL for primary messages.
PDelay Message TTL	Value must in the range [0,255].	1	The IP packet TTL for p_delay messages.
Event Port	Value must in the range [0,65535].	319	The UDP port for event messages.
General Port	Value must in the range [0,65535].	320	The UDP port for general messages.
Synchronization Detection
Threshold (Nanoseconds)	Value must be greater than 0.	1000000	The minimum offsetFromMaster value required in order to synchronize with the master clock.
Count	Value must in the range [0,15].	5	The number of times the calculated offsetFromMaster value must be less than the threshold in order to synchronize with the master clock.
Synchronization Lost Detection
Threshold (Nanoseconds)	Value must be greater than 0.	10000000	The minimum offsetFromMaster value required in order to lose synchronization with the master clock.
Count	Value must in the range [0,15].	5	The number of times the calculated offsetFromMaster value must be greater than the threshold in order to lose synchronization with the master.
Interrupts
Callback	Name must be a valid C symbol	ptp0_user_callback	Called when a STCA/SYNFP event occurs, a PTP message is received, or if a Pulse Timer event occurs.
MINT Interrupt priority	MCU Specific Options		Select the EPTPC MINT interrupt priority.
Pulse Timer Interrupt priority	MCU Specific Options		Select the EPTPC IPLS priority.
Name	Name must be a valid C symbol	g_ptp0	Module name.
Ethernet PHY Interface Type	MII RMII	RMII	The interface type used to communicate with the Ethernet PHY.
Frame Filter	Extended Promiscuous Mode Unicast and Multicast Unicast and Multicast Filtered Unicast	Unicast	Selects how packets are filtered based on their destination MAC address. Packets that pass the filter are transferred to the ETHERC EDMAC.
Frame Format	Ethernet II Ethernet II \| IPv4 \| UDP IEEE802.3 \| LLC \| SNAP IEEE802.3 \| LLC \| SNAP \| IPv4 \| UDP	Ethernet II	The format of the frames that encapsulate the PTP messages.
Clock Domain	Value must in the range [0,255].	0	The PTP clock will only respond to clocks in its domain.
Clock Domain Filter	Enable Disable	Enable	Filter out PTP messages from other clock domains.
Buffer Size	Value must in the range [64,1536].	1536	The maximum Ethernet packet size that can be transmitted or received by the application from the EDMAC.
Number of transmit buffers	Value must in the range [1,16].	4	The number of transmit buffers in the packet queue.
Number of receive buffers	Value must in the range [1,16].	4	The number of receive buffers in the packet queue.
Announce message interval.	MCU Specific Options		The period of time between generated announce messages.
Sync message interval.	MCU Specific Options		The period of time between generated sync messages.
Delay_req message interval.	MCU Specific Options		The period of time between generated delay_req messages.
Message timeout	Value must be greater than 0.	4000	The time in milliseconds needed to generate timeout events after not receiving a sync or delay_resp message.
Clock Source	PCLKA / 1 PCLKA / 2 PCLKA / 3 PCLKA / 4 PCLKA / 5 PCLKA / 6 REF50CK0	PCLKA / 6	The STCA clock source must be 20Mhz, 25Mhz, 50Mhz, or 100Mhz. When REF50CK0 is selected, the STCA frequency is 25Mhz.
Clock Correction Mode	Clock Correction Mode 1 Clock Correction Mode 2	Clock Correction Mode 1	Clock correction mode 1 corrects the local clock using the current offsetFromMaster value. Clock correction mode 2 calculates a clock gradient in order to continuously correct the local clock.
Gradient Worst10 Interval	Value must in the range [0,255].	32	The number of sync messages to use when calculating the worst10 gradient values (Only applies to clock correction mode 2).

Clock Configuration

The STCA input clock can be the following clock sources:

PCLKA / 1
PCLKA / 2
PCLKA / 3
PCLKA / 4
PCLKA / 5
PCLKA / 6
REF50CK0

The STCA input clock is restricted to the following frequencies:

20 Mhz
25 Mhz
50 Mhz
100 Mhz

When REF50CK0 is selected, the input clock frequency is 25 Mhz.

Pin Configuration

The PTP module requires the Ethernet (r_ether) instance in order to initialize the Ethernet PHY. This means that the ETHERC pins must be configured.

Usage Notes

PTP Port State

The current PTP port state determines which messages need to be generated and processed by the PTP peripheral. It is the application's responsibility to determine what the current state of the PTP port should be.

The following messages can be generated by the PTP peripheral:

Announce
Sync
Delay_req
Delay_resp
PDelay_req
PDelay_resp

The following messages can be processed by the PTP peripheral:

Sync
Follow_up
Delay_req
Delay_resp
PDelay_req
PDelay_resp
PDelay_resp_follow_up

The application must receive the following messages in order to determine the current state of its PTP port:

Announce
Management
Signaling

The following messages can only be sent manually:

Management
Signaling

The PTP API defines the following states:

State	Generated Messages	Processed Messages	Received Messages
Disabled	N/A	N/A	N/A
Passive	N/A	N/A	Announce, Signaling, Management
E2E/P2P Slave	Delay_req/(PDelay_req, PDelay_resp)	Sync, Follow_up, Delay_resp/(PDelay_req, PDelay_resp)	Announce, Signaling, Management
E2E/P2P Master	Announce, Sync, Delay_resp/(PDelay_req, PDelay_resp)	delay_req/(PDelay_req, PDelay_resp)	Announce, Signaling, Management

Pulse Timers

Pulse Timers are configurable timers used to generate interrupts and ELC events. Each pulse timer has a configurable start time, pulse, and period. At the start of each timer period, a rising edge occurs. After the pulse time has elapsed, a falling edge occurs. ELC events and IRQs can be generated on rising and/or falling edges for each Pulse Timer. There are two types of interrupts generated by each Pulse Timer; MINT and IPLS.

ELC Events

Pulse timers may be configured to generate the following ELC events:

EPTPC_TIMERn_RISE - Generated on the rising edge of pulse timer channel n¹.
EPTPC_TIMERn_FALL - Generated on the falling edge of pulse timer channel n¹.

Note: 1. n = [0,5] corresponds to the channel of the pulse timer.

MINT Interrupts

MINT IRQs are only generated on the rising edge of a Pulse Timer channel. The callback will provide the channel number of the pulse timer that caused the interrupt.

IPLS Interrupts

Each Pulse Timer channel can be configured as a source for generating IPLS IRQs. All of the pulse timers that are selected as IPLS sources are OR'd together and rising and falling edge IRQs can be generated from the resulting signal. Below is an example of a resulting signal from two IPLS sources. Unlike MINT interrupts, IPLS interrupts do not provide any information about which Pulse Timer caused the IRQ because the IRQs from all the Pulse Timers are OR'd together.

IPLS IRQ Generation

Ethernet Frame Filter

The PTP driver can filter Ethernet frames that are received by Ethernet (r_ether). There are four different filtering modes:

Extended Promiscuous - All Ethernet frames are received by Ethernet (r_ether).
Unicast and Multicast - All Unicast frames destined for the PTP and Multicast frames are received by Ethernet (r_ether).
Unicast and Multicast Filtered - All Unicast frames destined for the PTP are received by Ethernet (r_ether). All multicast frames that match ptp_synfp_cfg_t::p_multicast_addr_filter are received by Ethernet (r_ether).
Unicast - Only Unicast frames destined for the PTP are received by Ethernet (r_ether).

Limitations

Developers should be aware of the following limitations when using the PTP:

PTP will not automatically initialize Ethernet (r_ether). This provides flexibility by allowing PTP to be used alongside 3rd party IP stacks (Eg. FreeRTOS+TCP Wrapper to r_ether (rm_freertos_plus_tcp)), however this means the application must execute the Ethernet (r_ether) link process in order to use PTP.
The driver will not detect announce message timeouts. This functionality must be handled by the application.
When IP + UDP frame format is selected, the driver will not automatically join the multicast group. This must be done by the application.
In order to call PTP API functions from ISRs, the MINT and IPLS interrupt priorities must be configured to be lower than BSP_CFG_IRQ_MASK_LEVEL_FOR_CRITICAL_SECTION. This is to guarantee that PTP register accesses are atomic.
When IEEE802.3 | LLC | SNAP | IP | UDP or IEEE802.3 | LLC | SNAP Frame Format is selected, the PTP peripheral sets the OUI field in the SNAP frame to the first 3 bytes of the MAC address configured in the Ethernet (r_ether) module's configuration property. In order for the PID field of SNAP to be interpreted as EtherType, the OUI field should be set to '0'.

Examples

Slave Mode

This is a basic example of minimal use of PTP in slave mode.

volatile bool g_first_announce_message_received = false;
volatile bool g_sync_acquired = false;
void slave_mode_basic_example (void)
{
    /* The PTP Instance must be opened before R_ETHER is opened. */
    fsp_err_t err = R_PTP_Open(&g_ptp_ctrl, &g_ptp_cfg);
    assert(FSP_SUCCESS == err);
    /* Configure the PTP MAC address. */
    err = R_PTP_MacAddrSet(&g_ptp_ctrl, g_ptp_mac_address);
    assert(FSP_SUCCESS == err);
    /* Configure the PTP Local Clock ID (Usually generated from MAC address). */
    err = R_PTP_LocalClockIdSet(&g_ptp_ctrl, g_ptp_clock_id);
    assert(FSP_SUCCESS == err);
    /* Open the r_ether_api instance. */
    err = R_ETHER_Open(&g_ether_ctrl, &g_ether_cfg);
    assert(FSP_SUCCESS == err);
    /* Wait for the link to be established. */
    do
    {
        err = R_ETHER_LinkProcess(&g_ether_ctrl);
    } while (FSP_SUCCESS != err);
    /* Set the PTP instance to passive state and listen for announce message. */
    err = R_PTP_PortStateSet(&g_ptp_ctrl, PTP_PORT_STATE_PASSIVE);
    assert(FSP_SUCCESS == err);
    /* Wait for the first announce message (This will provide the master clock ID). */
    uint32_t timeout = EXAMPLE_TIMEOUT;
    while (!g_first_announce_message_received && --timeout)
    {
        R_BSP_SoftwareDelay(1, BSP_DELAY_UNITS_SECONDS);
    }
    assert(0U != timeout);
    /* When a master clock is found, change to the slave state to start synchronizing
     * the local clock to the master clock. */
    err = R_PTP_PortStateSet(&g_ptp_ctrl, PTP_PORT_STATE_E2E_SLAVE);
    assert(FSP_SUCCESS == err);
    /* Wait for local clock to be synchronized with the master clock. */
    timeout = EXAMPLE_TIMEOUT;
    while (!g_sync_acquired && --timeout)
    {
        R_BSP_SoftwareDelay(1, BSP_DELAY_UNITS_SECONDS);
    }
    assert(0U != timeout);
    /* The local clock is now synchronized with the grand master clock. */
}
/* Callback called whenever a PTP event occurs. */
void g_ptp_slave_callback_example (ptp_callback_args_t * p_args)
{
    switch (p_args->event)
    {
        case PTP_EVENT_SYNC_ACQUIRED:
        {
            /* The offsetFromMaster value is now within the configured threshold to be
             * synchronized with the master clock.
             */
            g_sync_acquired = true;
            break;
        }
        case PTP_EVENT_MESSAGE_RECEIVED:
        {
            static ptp_message_t g_current_master_announce_message;
            switch (p_args->p_message->header.message_type)
            {
                case PTP_MESSAGE_TYPE_ANNOUNCE:
                {
                    int8_t comparison = 0;
                    if (!g_first_announce_message_received)
                    {
                        /* If this is the first announce packet, immediately switch to this master clock. */
                        comparison = 1;
                        g_first_announce_message_received = true;
                    }
                    else
                    {
                        /*
                         * Run the "Best Master Clock Algorithm" to determine if the clock defined in this announce
                         * packet is better than the current master clock.
                         */
                        fsp_err_t err = R_PTP_BestMasterClock(&g_current_master_announce_message,
                                                              p_args->p_message,
                                                              &comparison);
                        assert(FSP_SUCCESS == err);
                    }
                    if (1 == comparison)
                    {
                        /* Save the message as the new master announce message. */
                        g_current_master_announce_message = *p_args->p_message;
                        /* Set the master clock ID and sourcePortID in the PTP instance so that it
                         * synchronizes with the new best master clock.
                         */
                        fsp_err_t err = R_PTP_MasterClockIdSet(&g_ptp_ctrl,
                                                               g_current_master_announce_message.header.clock_id,
                                                               g_current_master_announce_message.header.source_port_id);
                        assert(FSP_SUCCESS == err);
                    }
                    break;
                }
                default:
                {
                    break;
                }
            }
            break;
        }
        default:
        {
            break;
        }
    }
}

Master Mode

This is a basic example of minimal use of PTP in master mode.

#define PTP_EXAMPLE_CURRENT_UTC_OFFSET    (37)
void master_mode_basic_example (void)
{
    /* The PTP Instance must be opened before R_ETHER is opened. */
    fsp_err_t err = R_PTP_Open(&g_ptp_ctrl, &g_ptp_cfg);
    assert(FSP_SUCCESS == err);
    /* Configure the PTP MAC address. */
    err = R_PTP_MacAddrSet(&g_ptp_ctrl, g_ptp_mac_address);
    assert(FSP_SUCCESS == err);
    /* Configure the PTP Local Clock ID (Usually generated from MAC address). */
    err = R_PTP_LocalClockIdSet(&g_ptp_ctrl, g_ptp_clock_id);
    assert(FSP_SUCCESS == err);
    /* Get the current time from an external time source (Eg. RTC). */
    ptp_time_t current_time;
    get_current_time_example(&current_time);
    /* Set the PTP local time to the current time. */
    err = R_PTP_LocalClockValueSet(&g_ptp_ctrl, &current_time);
    assert(FSP_SUCCESS == err);
    /* Set the currentUtcOffset field in announce messages. */
    err = R_PTP_CurrentUtcOffsetSet(&g_ptp_ctrl, PTP_EXAMPLE_CURRENT_UTC_OFFSET);
    assert(FSP_SUCCESS == err);
    /* Set message flags in announce messages to indicate that the current UTC offset is valid and that the PTP timescale is used. */
    ptp_message_flags_t flags;
    flags.value = 0;
    flags.value_b.currentUtcOffsetValid = 1;
    flags.value_b.ptpTimescale          = 1;
    err = R_PTP_MessageFlagsSet(&g_ptp_ctrl, PTP_MESSAGE_TYPE_ANNOUNCE, flags);
    assert(FSP_SUCCESS == err);
    /* Open the r_ether_api instance. */
    err = R_ETHER_Open(&g_ether_ctrl, &g_ether_cfg);
    assert(FSP_SUCCESS == err);
    /* Wait for the link to be established. */
    do
    {
        err = R_ETHER_LinkProcess(&g_ether_ctrl);
    } while (FSP_SUCCESS != err);
    /* Set the PTP instance to passive state and listen for announce message. */
    err = R_PTP_PortStateSet(&g_ptp_ctrl, PTP_PORT_STATE_E2E_MASTER);
    assert(FSP_SUCCESS == err);
    /*
     * The master clock is now operational and will automatically generate announce and sync messages
     * as well as respond to delay_req messages.
     */
}

Send PTP Messages

This is a basic example of how to send PTP messages.

#define PTP_MANAGEMENT_ACTION_GET                  (0U)
#define PTP_TLV_TYPE_MANAGEMENT                    (1U)
#define PTP_TLV_MANAGEMENT_ID_CLOCK_DESCRIPTION    (1U)
static uint32_t g_transmit_complete = 0U;
void send_message_example (void)
{
    static ptp_message_t message;
    static uint8_t       p_tlv_data[6];
    memset(&message, 0, sizeof(ptp_message_t));
    /* Fill in the required fields for the message header (Note that appropriate fields will be endian swapped). */
    message.header.message_type = PTP_MESSAGE_TYPE_MANAGEMENT;
    message.header.version      = 2;
    /* The message length is the total number of bytes in the PTP message (Including the message header). */
    message.header.message_length = (uint16_t) (sizeof(ptp_message_header_t) +
                                                sizeof(ptp_message_management_t) +
                                                sizeof(p_tlv_data));
    memcpy(message.header.clock_id, g_ptp_clock_id, sizeof(g_ptp_clock_id));
    message.header.control_field = PTP_CTRL_FIELD_MANAGEMENT;
    /* Fill in the required fields for the management message. */
    memcpy(message.management.target_clock_id, g_target_clock_id, sizeof(g_target_clock_id));
    message.management.target_port_id         = 1;
    message.management.starting_boundary_hops = 1;
    message.management.boundary_hops          = 1;
    message.management.action                 = PTP_MANAGEMENT_ACTION_GET;
    /*
     * Fill in TLV data (Note that TLV data is big endian).
     *
     * Type (Management)
     */
    p_tlv_data[0] = 0;
    p_tlv_data[1] = PTP_TLV_TYPE_MANAGEMENT;
    /* Length */
    p_tlv_data[2] = 0;
    p_tlv_data[3] = 2;
    /* Management ID (Clock Description) */
    p_tlv_data[4] = 0;
    p_tlv_data[5] = PTP_TLV_MANAGEMENT_ID_CLOCK_DESCRIPTION;
    /* Send the message. */
    fsp_err_t err = R_PTP_MessageSend(&g_ptp_ctrl, &message, p_tlv_data, sizeof(p_tlv_data));
    assert(FSP_SUCCESS == err);
    uint32_t timeout = EXAMPLE_TIMEOUT;
    while (0U == g_transmit_complete && --timeout)
    {
        R_BSP_SoftwareDelay(1U, BSP_DELAY_UNITS_MICROSECONDS);
    }
}
/* Callback called whenever a PTP event occurs. */
void g_ptp_send_message_callback_example (ptp_callback_args_t * p_args)
{
    switch (p_args->event)
    {
        case PTP_EVENT_MESSAGE_TRANSMIT_COMPLETE:
        {
            g_transmit_complete = 1U;
            break;
        }
        case PTP_EVENT_MESSAGE_RECEIVED:
        {
            switch (p_args->p_message->header.message_type)
            {
                case PTP_MESSAGE_TYPE_MANAGEMENT:
                {
                    /* Handle the response message. */
                    break;
                }
                default:
                {
                    break;
                }
            }
        }
        default:
        {
            break;
        }
    }
}

Data Structures
struct	ptp_instance_ctrl_t

Data Structure Documentation

◆ ptp_instance_ctrl_t

struct ptp_instance_ctrl_t

PTP instance control block.

Data Fields
uint32_t	open	Marks if the instance has been opened.
uint32_t	tx_buffer_write_index	Index into the descriptor list to write the next packet.
uint32_t	tx_buffer_complete_index	Index into the descriptor list of the last transmitted packet.
uint32_t	rx_buffer_index	Index into the descriptor of the last received packet.
uint32_t	tslatr	Keep track of whether tslatr was set.
ptp_cfg_t const *	p_cfg	Pointer to the configuration structure.

Function Documentation

◆ R_PTP_Open()

fsp_err_t R_PTP_Open	(	ptp_ctrl_t *const	p_ctrl,
		ptp_cfg_t const *const	p_cfg
	)

This function initializes PTP. Implements ptp_api_t::open.

This function performs the following tasks:

Performs parameter checking and processes error conditions.
Configures the peripheral registers acording to the configuration.
Initialize the control structure for use in other PTP Interface functions.

Return values

FSP_SUCCESS	The instance has been successfully configured.
FSP_ERR_ALREADY_OPEN	Instance was already initialized.
FSP_ERR_NOT_OPEN	The EDMAC instance was not opened correctly.
FSP_ERR_ASSERTION	An invalid argument was given in the configuration structure.

◆ R_PTP_MacAddrSet()

fsp_err_t R_PTP_MacAddrSet	(	ptp_ctrl_t *const	p_ctrl,
		uint8_t const *const	p_mac_addr
	)

This function sets the MAC address for the PTP instance. Implements ptp_api_t::macAddrSet.

Note: This function may only be called while the PTP instance is in ptp_port_state_t::PTP_PORT_STATE_DISABLE.

Return values

FSP_SUCCESS	The MAC address has been set.
FSP_ERR_NOT_OPEN	The instance has not been opened.
FSP_ERR_ASSERTION	An argument was NULL
FSP_ERR_INVALID_MODE	The instance is not in the correct state.

◆ R_PTP_IpAddrSet()

fsp_err_t R_PTP_IpAddrSet	(	ptp_ctrl_t *const	p_ctrl,
		uint32_t	ip_addr
	)

This function sets the IP address for the PTP instance. Implements ptp_api_t::ipAddrSet.

Note: This function may only be called while the PTP instance is in ptp_port_state_t::PTP_PORT_STATE_DISABLE.

Return values

FSP_SUCCESS	The IP address has been set.
FSP_ERR_NOT_OPEN	The instance has not been opened.
FSP_ERR_ASSERTION	An argument was NULL.
FSP_ERR_INVALID_MODE	The configured ptp_synfp_cfg_t::frame_format is not configured to use IP packets, or the instance is not in the correct state.

◆ R_PTP_LocalClockIdSet()

fsp_err_t R_PTP_LocalClockIdSet	(	ptp_ctrl_t *const	p_ctrl,
		uint8_t const *const	p_clock_id
	)

This function sets the local clock ID for the PTP instance. Implements ptp_api_t::localClockIdSet.

Note: This function may only be called while the PTP instance is in ptp_port_state_t::PTP_PORT_STATE_DISABLE.; Typically the clock ID is derived from the MAC address (E.g. {b1,b2,b3,0xFF,0xFE,b4,b5,b6}).

Return values

FSP_SUCCESS	The local clock ID has been set.
FSP_ERR_NOT_OPEN	The instance has not been opened.
FSP_ERR_ASSERTION	An argument was NULL
FSP_ERR_INVALID_MODE	The instance is not in the correct state.

◆ R_PTP_MasterClockIdSet()

fsp_err_t R_PTP_MasterClockIdSet	(	ptp_ctrl_t *const	p_ctrl,
		uint8_t const *const	p_clock_id,
		uint16_t	port_id
	)

This function sets the master clock ID and port ID that the local clock will synchronize with. Implements ptp_api_t::masterClockIdSet.

Return values

FSP_SUCCESS	The master clock ID and port ID have been set.
FSP_ERR_NOT_OPEN	The instance has not been opened.
FSP_ERR_ASSERTION	An argument was NULL

◆ R_PTP_MessageFlagsSet()

fsp_err_t R_PTP_MessageFlagsSet	(	ptp_ctrl_t *const	p_ctrl,
		ptp_message_type_t	message_type,
		ptp_message_flags_t	flags
	)

This function sets the flags field for the given message type. Implements ptp_api_t::messageFlagsSet.

Return values

FSP_SUCCESS	The master clock ID and port ID have been set.
FSP_ERR_NOT_OPEN	The instance has not been opened.
FSP_ERR_ASSERTION	An argument was NULL or invalid.

◆ R_PTP_CurrentUtcOffsetSet()

fsp_err_t R_PTP_CurrentUtcOffsetSet	(	ptp_ctrl_t *const	p_ctrl,
		uint16_t	offset
	)

This function sets the currentUtcOffset value in announce messages. ptp_api_t::currentUtcOffsetSet.

Return values

FSP_SUCCESS	The currentUtcOffset has been updated.
FSP_ERR_NOT_OPEN	The instance has not been opened.
FSP_ERR_ASSERTION	An argument was NULL or invalid.

◆ R_PTP_PortStateSet()

fsp_err_t R_PTP_PortStateSet	(	ptp_ctrl_t *const	p_ctrl,
		uint32_t	state
	)

This function changes the current state of the PTP instance. Implements ptp_api_t::portStateSet.

Return values

FSP_SUCCESS	The instance will transition to the new state.
FSP_ERR_NOT_OPEN	The instance has not been opened.
FSP_ERR_ASSERTION	An argument was NULL

◆ R_PTP_MessageSend()

fsp_err_t R_PTP_MessageSend	(	ptp_ctrl_t *const	p_ctrl,
		ptp_message_t const *const	p_message,
		uint8_t const *const	p_tlv_data,
		uint16_t	tlv_data_size
	)

This function sends a PTP message. ptp_api_t::messageSend.

Return values

FSP_SUCCESS	The packet has been written to the transmit descriptor.
FSP_ERR_NOT_OPEN	The instance has not been opened.
FSP_ERR_ASSERTION	An argument was NULL or invalid.
FSP_ERR_ETHER_ERROR_TRANSMIT_BUFFER_FULL	There is no space for the packet in the transmit queue.

◆ R_PTP_LocalClockValueSet()

fsp_err_t R_PTP_LocalClockValueSet	(	ptp_ctrl_t *const	p_ctrl,
		ptp_time_t const *const	p_time
	)

This function sets the local clock value. Implements ptp_api_t::localClockValueSet.

Return values

FSP_SUCCESS	The local clock value has been set.
FSP_ERR_NOT_OPEN	The instance has not been opened.
FSP_ERR_ASSERTION	An argument was NULL or invalid.

◆ R_PTP_LocalClockValueGet()

fsp_err_t R_PTP_LocalClockValueGet	(	ptp_ctrl_t *const	p_ctrl,
		ptp_time_t *const	p_time
	)

This function gets the local clock value. Implements ptp_api_t::localClockValueGet.

Return values

FSP_SUCCESS	The local clock value has been written in p_time.
FSP_ERR_NOT_OPEN	The instance has not been opened.
FSP_ERR_ASSERTION	An argument was NULL

◆ R_PTP_PulseTimerCommonConfig()

fsp_err_t R_PTP_PulseTimerCommonConfig	(	ptp_ctrl_t *const	p_ctrl,
		ptp_pulse_timer_common_cfg_t *const	p_timer_cfg
	)

This function configures IPLS IRQ settings that are common to all pulse timer channels. Implements ptp_api_t::pulseTimerCommonConfig.

Return values

FSP_SUCCESS	The pulse timer has been enabled.
FSP_ERR_NOT_OPEN	The instance has not been opened.
FSP_ERR_ASSERTION	An argument was NULL or invalid.

◆ R_PTP_PulseTimerEnable()

fsp_err_t R_PTP_PulseTimerEnable	(	ptp_ctrl_t *const	p_ctrl,
		uint32_t	channel,
		ptp_pulse_timer_cfg_t *const	p_timer_cfg
	)

This function enables a pulse timer channel. Implements ptp_api_t::pulseTimerEnable.

Return values

FSP_SUCCESS	The pulse timer has been enabled.
FSP_ERR_NOT_OPEN	The instance has not been opened.
FSP_ERR_ASSERTION	An argument was NULL or invalid.
FSP_ERR_INVALID_ARGUMENT	The start time must be set to a value that is later than current time.

◆ R_PTP_PulseTimerDisable()

fsp_err_t R_PTP_PulseTimerDisable	(	ptp_ctrl_t *const	p_ctrl,
		uint32_t	channel
	)

This function disables a pulse timer channel. Implements ptp_api_t::pulseTimerDisable.

Return values

FSP_SUCCESS	The pulse timer has been disabled.
FSP_ERR_NOT_OPEN	The instance has not been opened.
FSP_ERR_ASSERTION	An argument was NULL or invalid.

◆ R_PTP_Close()

fsp_err_t R_PTP_Close ( ptp_ctrl_t *const p_ctrl )

Disable the PTP instance. Implements ptp_api_t::close.

Return values

FSP_SUCCESS	The pulse timer has been disabled.
FSP_ERR_NOT_OPEN	The instance has not been opened.
FSP_ERR_ASSERTION	An argument was NULL or invalid.

◆ R_PTP_BestMasterClock()

fsp_err_t R_PTP_BestMasterClock	(	ptp_message_t const *const	p_announce1,
		ptp_message_t const *const	p_announce2,
		int8_t *const	p_comparison
	)

This function compares two clocks to determine which one is the better master clock.

p_comparison:

Set to -1 if p_announce1 defines the best master clock.
Set to 1 if p_announce2 defines the best master clock.
Set to 0 if p_announce1 and p_announce2 define the same clock.

Return values

FSP_SUCCESS	The valid result has been written to p_use_announce_clock.
FSP_ERR_ASSERTION	An argument was NULL.

Functions

Detailed Description

Overview

Features

Configuration

Build Time Configurations for r_ptp

Configurations for Networking > PTP (r_ptp)

Clock Configuration

Pin Configuration

Usage Notes

PTP Port State

Pulse Timers

ELC Events

MINT Interrupts

IPLS Interrupts

Ethernet Frame Filter

Limitations

Examples

Slave Mode

Master Mode

Send PTP Messages

Data Structures

Data Structure Documentation

◆ ptp_instance_ctrl_t

Function Documentation

◆ R_PTP_Open()

◆ R_PTP_MacAddrSet()

◆ R_PTP_IpAddrSet()

◆ R_PTP_LocalClockIdSet()

◆ R_PTP_MasterClockIdSet()

◆ R_PTP_MessageFlagsSet()

◆ R_PTP_CurrentUtcOffsetSet()

◆ R_PTP_PortStateSet()

◆ R_PTP_MessageSend()

◆ R_PTP_LocalClockValueSet()

◆ R_PTP_LocalClockValueGet()

◆ R_PTP_PulseTimerCommonConfig()

◆ R_PTP_PulseTimerEnable()

◆ R_PTP_PulseTimerDisable()

◆ R_PTP_Close()

◆ R_PTP_BestMasterClock()