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lr1mac_core.c
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lr1mac_core.c
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/*!
* \file lr1_mac_core.c
*
* \brief LoRaWan core definition
*
* The Clear BSD License
* Copyright Semtech Corporation 2021. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted (subject to the limitations in the disclaimer
* below) provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of the Semtech corporation nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED BY
* THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT
* NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL SEMTECH CORPORATION BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
/*
*-----------------------------------------------------------------------------------
* --- DEPENDENCIES -----------------------------------------------------------------
*/
#include "lr1mac_core.h"
#include "smtc_modem_hal_dbg_trace.h"
#include "lr1mac_utilities.h"
#include "smtc_modem_hal.h"
#include "smtc_real.h"
#include "smtc_real_defs.h"
#include "smtc_real_defs_str.h"
#include "smtc_lbt.h"
#include "smtc_lora_cad_bt.h"
#include "lr1mac_config.h"
/*
* -----------------------------------------------------------------------------
* --- PRIVATE MACROS-----------------------------------------------------------
*/
#define DBG_PRINT_WITH_LINE( ... ) \
do \
{ \
SMTC_MODEM_HAL_TRACE_PRINTF( "\n *************************************\n * " ); \
SMTC_MODEM_HAL_TRACE_PRINTF( __VA_ARGS__ ); \
SMTC_MODEM_HAL_TRACE_PRINTF( "\n *************************************\n" ); \
} while( 0 );
/*
* -----------------------------------------------------------------------------
* --- PRIVATE CONSTANTS -------------------------------------------------------
*/
#define FAILSAFE_DURATION 300U
#if( MODEM_HAL_DBG_TRACE == MODEM_HAL_FEATURE_ON )
static const char* smtc_name_bw[] = { "BW007", "BW010", "BW015", "BW020", "BW031", "BW041", "BW062",
"BW125", "BW200", "BW250", "BW400", "BW500", "BW800", "BW1600" };
static const char* smtc_name_lr_fhss_bw[] = { "BW 39063", "BW 85938", "BW 136719", "BW 183594", "BW 335938",
"BW 386719", "BW 722656", "BW 773438", "BW 1523438", "BW 1574219" };
static const char* smtc_name_lr_fhss_cr[] = { "CR 5/6", "CR 2/3", "CR 1/2", "CR 1/3" };
#endif
#ifndef DISABLE_LORAWAN_RX_WINDOWS
#define DISABLE_LORAWAN_RX_WINDOWS 0
#endif
/*
*-----------------------------------------------------------------------------------
*--- PRIVATE VARIABLES -------------------------------------------------------------
*/
/*
*-----------------------------------------------------------------------------------
*--- PRIVATE FUNCTIONS DECLARATION -------------------------------------------------
*/
static void copy_user_payload( lr1_stack_mac_t* lr1_mac_obj, const uint8_t* data_in, const uint8_t size_in );
static void lr1mac_mac_update( lr1_stack_mac_t* lr1_mac_obj );
/*
*-----------------------------------------------------------------------------------
*--- PUBLIC FUNCTIONS DEFINITIONS --------------------------------------------------
*/
void lr1mac_core_init( lr1_stack_mac_t* lr1_mac_obj, smtc_real_t* real, smtc_lbt_t* lbt_obj,
smtc_lora_cad_bt_t* cad_obj, radio_planner_t* rp, lr1mac_activation_mode_t activation_mode,
void ( *push_callback )( lr1_stack_mac_down_data_t* push_context ), void* stack_id )
{
memset( lr1_mac_obj, 0, sizeof( lr1_stack_mac_t ) );
lr1_mac_obj->stack_id = ( *( uint8_t* ) stack_id );
lr1_mac_obj->lr1mac_state = LWPSTATE_IDLE;
lr1_mac_obj->valid_rx_packet = NO_MORE_VALID_RX_PACKET;
lr1_mac_obj->stack_id4rp = RP_HOOK_ID_LR1MAC_STACK + ( *( uint8_t* ) stack_id );
lr1_mac_obj->real = real;
lr1_mac_obj->lbt_obj = lbt_obj;
lr1_mac_obj->cad_obj = cad_obj;
lr1_mac_obj->send_at_time = false;
lr1_mac_obj->push_callback = push_callback;
lr1_mac_obj->push_context = &( lr1_mac_obj->rx_down_data );
lr1_mac_obj->crystal_error = BSP_CRYSTAL_ERROR;
lr1_mac_obj->device_time_invalid_delay_s = LR1MAC_DEVICE_TIME_DELAY_TO_BE_NO_SYNC;
lr1_mac_obj->no_rx_windows = DISABLE_LORAWAN_RX_WINDOWS;
lr1_mac_obj->rx_down_data.stack_id = lr1_mac_obj->stack_id;
lr1_stack_mac_init( lr1_mac_obj, activation_mode );
status_lorawan_t status = lr1mac_core_context_load( lr1_mac_obj );
if( status == OKLORAWAN )
{
// Check if the region stored in flash is still valid
if( smtc_real_is_supported_region( lr1_mac_obj->real->region_type ) == SMTC_REAL_STATUS_OK )
{
status = OKLORAWAN;
}
else
{
SMTC_MODEM_HAL_TRACE_ERROR( "Region (0x%x) in nvm context not supported\n",
lr1_mac_obj->real->region_type );
status = ERRORLORAWAN;
}
}
if( status != OKLORAWAN )
{
SMTC_MODEM_HAL_TRACE_WARNING( "No valid lr1mac context --> Factory reset\n" );
lr1mac_core_context_factory_reset( lr1_mac_obj );
lr1mac_core_context_load( lr1_mac_obj );
lr1_mac_obj->real->region_type = ( smtc_real_region_types_t ) smtc_real_region_list[0];
lr1mac_core_context_save( lr1_mac_obj );
}
lr1_mac_obj->rp = rp;
lr1_mac_obj->no_rx_packet_reset_threshold = LR1MAC_NO_RX_PACKET_RESET_THRESHOLD;
rp_hook_init( lr1_mac_obj->rp, lr1_mac_obj->stack_id4rp, ( void ( * )( void* ) )( lr1_stack_mac_rp_callback ),
( lr1_mac_obj ) );
SMTC_MODEM_HAL_TRACE_PRINTF_DEBUG( "rp_hook_init done for hook : %d \n", lr1_mac_obj->stack_id4rp );
lr1_stack_mac_region_init( lr1_mac_obj, lr1_mac_obj->real->region_type );
lr1_stack_mac_region_config( lr1_mac_obj );
// Initialize here adr_ack_limit_init and adr_ack_delay_init which are real dependant and must be updated after the
// real is initialized and not reinit after the join accept
lr1_mac_obj->adr_ack_limit_init = smtc_real_get_adr_ack_limit( lr1_mac_obj->real );
lr1_mac_obj->adr_ack_delay_init = smtc_real_get_adr_ack_delay( lr1_mac_obj->real );
SMTC_MODEM_HAL_TRACE_PRINTF( "stack_id %u\n", lr1_mac_obj->stack_id );
SMTC_MODEM_HAL_TRACE_PRINTF( " DevNonce = %d\n", lr1_mac_obj->dev_nonce );
SMTC_MODEM_HAL_TRACE_PRINTF( " JoinNonce = 0x%02x %02x %02x, NetID = 0x%02x %02x %02x\n",
lr1_mac_obj->join_nonce[0], lr1_mac_obj->join_nonce[1], lr1_mac_obj->join_nonce[2],
lr1_mac_obj->join_nonce[3], lr1_mac_obj->join_nonce[4], lr1_mac_obj->join_nonce[5] );
SMTC_MODEM_HAL_TRACE_PRINTF( " Region = %s\n", smtc_real_region_list_str[lr1_mac_obj->real->region_type] );
}
/***********************************************************************************************/
/* LoraWanProcess Method */
/***********************************************************************************************/
lr1mac_states_t lr1mac_core_process( lr1_stack_mac_t* lr1_mac_obj )
{
uint8_t myhook_id;
bool timer_in_past = false;
rp_hook_get_id( lr1_mac_obj->rp, ( void* ) ( ( lr1_mac_obj ) ), &myhook_id );
#if !defined( TEST_BYPASS_JOIN_DUTY_CYCLE )
if( lr1mac_core_certification_get( lr1_mac_obj ) == false )
{
if( ( lr1_mac_obj->join_status == JOINING ) &&
( ( int32_t ) ( lr1_mac_obj->next_time_to_join_seconds - smtc_modem_hal_get_time_in_s( ) ) > 0 ) )
{
SMTC_MODEM_HAL_TRACE_PRINTF( "TOO SOON TO JOIN time is %d time target is : %d\n",
smtc_modem_hal_get_time_in_s( ), lr1_mac_obj->next_time_to_join_seconds );
lr1_mac_obj->lr1mac_state = LWPSTATE_IDLE;
}
}
#endif
if( ( lr1_mac_obj->lr1mac_state != LWPSTATE_IDLE ) &&
( ( int32_t ) ( smtc_modem_hal_get_time_in_s( ) - lr1_mac_obj->timestamp_failsafe - FAILSAFE_DURATION ) > 0 ) )
{
SMTC_MODEM_HAL_PANIC( "FAILSAFE EVENT OCCUR (lr1mac_state:0x%x)\n", lr1_mac_obj->lr1mac_state );
lr1_mac_obj->lr1mac_state = LWPSTATE_ERROR;
}
if( lr1_mac_obj->radio_process_state == RADIOSTATE_ABORTED_BY_RP )
{
lr1mac_mac_update( lr1_mac_obj );
}
switch( lr1_mac_obj->lr1mac_state )
{
//**********************************************************************************
// STATE IDLE
//**********************************************************************************
case LWPSTATE_IDLE:
break;
//**********************************************************************************
// STATE TXwait MAC
//**********************************************************************************
case LWPSTATE_TX_WAIT:
SMTC_MODEM_HAL_TRACE_PRINTF( " ." );
lr1_mac_obj->lr1mac_state = LWPSTATE_SEND; //@note the frame have already been prepare in Update Mac Layer
// Break is missing du to the fact that the send is immediatly enqueued
// Intentional fallthrough
//**********************************************************************************
// STATE TX
//**********************************************************************************
case LWPSTATE_SEND:
switch( lr1_mac_obj->radio_process_state )
{
case RADIOSTATE_IDLE: {
lr1_mac_obj->radio_process_state = RADIOSTATE_PENDING;
DBG_PRINT_WITH_LINE( "Send Payload for stack_id = %d", lr1_mac_obj->stack_id );
uint8_t tx_sf;
lr1mac_bandwidth_t tx_bw;
modulation_type_t tx_modulation_type =
smtc_real_get_modulation_type_from_datarate( lr1_mac_obj->real, lr1_mac_obj->tx_data_rate );
if( tx_modulation_type == LORA )
{
smtc_real_lora_dr_to_sf_bw( lr1_mac_obj->real, lr1_mac_obj->tx_data_rate, &tx_sf, &tx_bw );
SMTC_MODEM_HAL_TRACE_PRINTF(
" Tx LoRa at %u ms: freq:%u, SF%u, %s, len %u bytes %d dBm, fcnt_up %d, toa = %d\n",
lr1_mac_obj->rtc_target_timer_ms, lr1_mac_obj->tx_frequency, tx_sf, smtc_name_bw[tx_bw],
lr1_mac_obj->tx_payload_size, lr1_mac_obj->tx_power, lr1_mac_obj->fcnt_up,
lr1_stack_toa_get( lr1_mac_obj ) );
}
else if( tx_modulation_type == FSK )
{
SMTC_MODEM_HAL_TRACE_PRINTF(
" Tx FSK at %u ms: freq:%u, len %u bytes %d dBm, fcnt_up %d, toa = %d\n",
lr1_mac_obj->rtc_target_timer_ms, lr1_mac_obj->tx_frequency, lr1_mac_obj->tx_payload_size,
lr1_mac_obj->tx_power, lr1_mac_obj->fcnt_up, lr1_stack_toa_get( lr1_mac_obj ) );
}
else if( tx_modulation_type == LR_FHSS )
{
lr_fhss_v1_cr_t tx_cr;
lr_fhss_v1_bw_t tx_bw;
smtc_real_lr_fhss_dr_to_cr_bw( lr1_mac_obj->real, lr1_mac_obj->tx_data_rate, &tx_cr, &tx_bw );
SMTC_MODEM_HAL_TRACE_PRINTF(
" Tx LR FHSS at %u ms: freq:%u, DR%u (%s, %s Hz), len %u bytes, %d dBm, fcnt_up %d, toa = %d\n",
lr1_mac_obj->rtc_target_timer_ms, lr1_mac_obj->tx_frequency, lr1_mac_obj->tx_data_rate,
smtc_name_lr_fhss_cr[tx_cr], smtc_name_lr_fhss_bw[tx_bw], lr1_mac_obj->tx_payload_size,
lr1_mac_obj->tx_power, lr1_mac_obj->fcnt_up, lr1_stack_toa_get( lr1_mac_obj ) );
}
#if defined( ADD_CSMA )
if( ( smtc_lora_cad_bt_get_state( lr1_mac_obj->cad_obj ) == true ) && ( tx_modulation_type == LORA ) )
{
smtc_lora_cad_bt_listen_channel(
lr1_mac_obj->cad_obj, lr1_mac_obj->tx_frequency, tx_sf, ( ral_lora_bw_t ) tx_bw,
lr1_mac_obj->send_at_time, lr1_mac_obj->rtc_target_timer_ms,
smtc_real_get_symbol_duration_us( lr1_mac_obj->real, lr1_mac_obj->tx_data_rate ),
lr1_stack_toa_get( lr1_mac_obj ), lr1_mac_obj->nb_available_tx_channel );
}
else
#endif // ADD_CSMA
if( smtc_lbt_get_state( lr1_mac_obj->lbt_obj ) == true )
{
smtc_lbt_listen_channel( ( lr1_mac_obj->lbt_obj ), lr1_mac_obj->tx_frequency,
lr1_mac_obj->send_at_time, lr1_mac_obj->rtc_target_timer_ms,
lr1_stack_toa_get( lr1_mac_obj ) );
}
else
{
lr1_stack_mac_tx_radio_start( lr1_mac_obj );
}
break;
}
case RADIOSTATE_TX_FINISHED: {
DBG_PRINT_WITH_LINE( " TX DONE" );
lr1_mac_obj->lr1mac_state = LWPSTATE_RX1;
lr1_mac_obj->tx_duty_cycle_timestamp_ms = lr1_mac_obj->isr_tx_done_radio_timestamp;
lr1_mac_obj->tx_duty_cycle_time_off_ms =
( lr1_mac_obj->rp->stats.tx_last_toa_ms[myhook_id] << lr1_mac_obj->max_duty_cycle_index ) -
lr1_mac_obj->rp->stats.tx_last_toa_ms[myhook_id];
if( lr1_mac_obj->join_status == JOINING )
{
// save devnonce after the end of TX
lr1mac_core_context_save( lr1_mac_obj );
}
lr1_stack_mac_update_tx_done( lr1_mac_obj );
if( ( lr1_mac_obj->no_rx_windows == 0 ) || ( lr1_mac_obj->join_status != JOINED ) )
{
timer_in_past = lr1_stack_mac_rx_timer_configure( lr1_mac_obj, RX1 );
}
else
{
lr1mac_mac_update( lr1_mac_obj );
}
break;
}
default:
// Do nothing
break;
}
if( timer_in_past == false )
{
break;
}
else
{
timer_in_past = false;
}
// Intentional fallthrough
//**********************************************************************************
// STATE RX1
//**********************************************************************************
case LWPSTATE_RX1:
if( lr1_mac_obj->radio_process_state == RADIOSTATE_RX_FINISHED )
{
if( lr1_mac_obj->rp_planner_status == RP_STATUS_RX_PACKET )
{
lr1_mac_obj->rx_down_data.rx_metadata.rx_window = RECEIVE_ON_RX1;
lr1_mac_obj->valid_rx_packet = lr1_stack_mac_rx_frame_decode( lr1_mac_obj );
if( lr1_mac_obj->valid_rx_packet == NO_MORE_VALID_RX_PACKET )
{
lr1_mac_obj->lr1mac_state = LWPSTATE_RX2;
DBG_PRINT_WITH_LINE( "Receive a bad packet on RX1 for stack_id = %d continue with RX2 ",
lr1_mac_obj->stack_id );
timer_in_past = lr1_stack_mac_rx_timer_configure( lr1_mac_obj, RX2 );
}
else
{
DBG_PRINT_WITH_LINE( "Receive a Valid downlink RX1 for stack_id = %d", lr1_mac_obj->stack_id );
lr1mac_mac_update( lr1_mac_obj );
}
}
else
{
lr1_mac_obj->lr1mac_state = LWPSTATE_RX2;
DBG_PRINT_WITH_LINE( "RX1 Timeout for stack_id = %d", lr1_mac_obj->stack_id );
timer_in_past = lr1_stack_mac_rx_timer_configure( lr1_mac_obj, RX2 );
}
}
if( timer_in_past == false )
{
break;
}
else
{
timer_in_past = false;
}
// Intentional fallthrough
//**********************************************************************************
// STATE RX2
//**********************************************************************************
case LWPSTATE_RX2:
if( lr1_mac_obj->radio_process_state == RADIOSTATE_RX_FINISHED )
{
if( lr1_mac_obj->rp_planner_status == RP_STATUS_RX_PACKET )
{
lr1_mac_obj->rx_down_data.rx_metadata.rx_window = RECEIVE_ON_RX2;
lr1_mac_obj->valid_rx_packet = lr1_stack_mac_rx_frame_decode( lr1_mac_obj );
if( lr1_mac_obj->valid_rx_packet == NO_MORE_VALID_RX_PACKET )
{
DBG_PRINT_WITH_LINE( "Receive a bad packet on RX2 for stack_id = %d", lr1_mac_obj->stack_id );
}
else
{
DBG_PRINT_WITH_LINE( "Receive a Valid downlink RX2 for stack_id = %d", lr1_mac_obj->stack_id );
}
}
else
{
DBG_PRINT_WITH_LINE( "RX2 Timeout for stack_id = %d", lr1_mac_obj->stack_id );
}
lr1mac_mac_update( lr1_mac_obj );
}
break;
default:
SMTC_MODEM_HAL_PANIC( "Illegal state in lorawan process\n" );
break;
}
return ( lr1_mac_obj->lr1mac_state );
}
/***********************************************************************************************/
/* End Of LoraWanProcess Method */
/***********************************************************************************************/
/**************************************************/
/* LoraWan Join Method */
/**************************************************/
status_lorawan_t lr1mac_core_join( lr1_stack_mac_t* lr1_mac_obj, uint32_t target_time_ms )
{
if( lr1_mac_obj->lr1mac_state != LWPSTATE_IDLE )
{
SMTC_MODEM_HAL_TRACE_ERROR( "LP STATE NOT EQUAL TO IDLE\n" );
return ERRORLORAWAN;
}
if( lr1_mac_obj->activation_mode == ACTIVATION_MODE_ABP )
{
lr1_mac_obj->join_status = JOINED;
return OKLORAWAN;
}
uint32_t current_timestamp = smtc_modem_hal_get_time_in_s( );
lr1_mac_obj->timestamp_failsafe = current_timestamp;
lr1_mac_obj->rtc_target_timer_ms = target_time_ms;
lr1_mac_obj->join_status = JOINING;
lr1_stack_mac_region_config( lr1_mac_obj );
// check adr mode to see if it is already set in join DR and it is the first join try or if adr was set to other
// DR
if( ( lr1_mac_obj->adr_mode_select != JOIN_DR_DISTRIBUTION ) ||
( ( lr1_mac_obj->retry_join_cpt == 0 ) && ( lr1_mac_obj->adr_mode_select == JOIN_DR_DISTRIBUTION ) ) )
{
// if it is the case force dr distribution to join
lr1_mac_obj->adr_mode_select_tmp = lr1_mac_obj->adr_mode_select;
smtc_real_set_dr_distribution( lr1_mac_obj->real, JOIN_DR_DISTRIBUTION, &lr1_mac_obj->nb_trans );
lr1_mac_obj->adr_mode_select = JOIN_DR_DISTRIBUTION;
}
smtc_real_get_next_tx_dr( lr1_mac_obj->real, lr1_mac_obj->join_status, &lr1_mac_obj->adr_mode_select,
&lr1_mac_obj->tx_data_rate, lr1_mac_obj->tx_data_rate_adr, &lr1_mac_obj->adr_enable );
if( smtc_real_get_join_next_channel( lr1_mac_obj->real, &lr1_mac_obj->tx_data_rate, &lr1_mac_obj->tx_frequency,
&lr1_mac_obj->rx1_frequency, &lr1_mac_obj->rx2_frequency,
&lr1_mac_obj->nb_available_tx_channel ) != OKLORAWAN )
{
return ERRORLORAWAN;
}
lr1_stack_mac_join_request_build( lr1_mac_obj );
lr1_mac_obj->rx1_delay_s = smtc_real_get_rx1_join_delay( lr1_mac_obj->real );
lr1_mac_obj->rx2_data_rate = smtc_real_get_rx2_join_dr( lr1_mac_obj->real );
// check if it first join try
if( lr1_mac_obj->retry_join_cpt == 0 )
{
// take the timestamp reference for join duty cycle management
lr1_mac_obj->first_join_timestamp = current_timestamp;
}
lr1_mac_obj->lr1mac_state = LWPSTATE_SEND;
return OKLORAWAN;
}
/**************************************************/
/* LoraWan IsJoined Method */
/**************************************************/
join_status_t lr1_mac_joined_status_get( lr1_stack_mac_t* lr1_mac_obj )
{
return lr1_mac_obj->join_status;
}
/**************************************************/
/* LoraWan ClearJoinStatus Method */
/**************************************************/
void lr1mac_core_join_status_clear( lr1_stack_mac_t* lr1_mac_obj )
{
lr1_mac_obj->join_status = NOT_JOINED;
lr1mac_core_abort( lr1_mac_obj );
smtc_real_init_join_snapshot_channel_mask( lr1_mac_obj->real );
lr1_mac_obj->retry_join_cpt = 0;
}
/**************************************************/
/* LoraWan SendPayload Method */
/**************************************************/
status_lorawan_t lr1mac_core_send_stack_cid_req( lr1_stack_mac_t* lr1_mac_obj, uint8_t* cid_req_list,
uint8_t cid_req_list_size )
{
uint8_t data_in[242];
uint8_t size_in = 0;
uint32_t target_time_ms =
smtc_modem_hal_get_time_in_ms( ) + ( smtc_modem_hal_get_random_nb_in_range( 1000, 3000 ) );
for( uint8_t i = 0; i < cid_req_list_size; i++ )
{
// If sticky are present add it to the payload only once
if( ( lr1_mac_obj->link_check_user_req != USER_MAC_REQ_REQUESTED ) &&
( lr1_mac_obj->device_time_user_req != USER_MAC_REQ_REQUESTED ) &&
( lr1_mac_obj->ping_slot_info_user_req != USER_MAC_REQ_REQUESTED ) )
{
if( lr1_mac_obj->tx_fopts_current_length > 0 )
{
size_in += lr1_mac_obj->tx_fopts_current_length;
memcpy( data_in, lr1_mac_obj->tx_fopts_current_data, lr1_mac_obj->tx_fopts_current_length );
}
}
switch( cid_req_list[i] )
{
case LINK_CHECK_REQ:
if( lr1_mac_obj->link_check_user_req != USER_MAC_REQ_REQUESTED )
{
lr1_mac_obj->link_check_user_req = USER_MAC_REQ_REQUESTED;
lr1_mac_obj->link_check_margin = 0;
lr1_mac_obj->link_check_gw_cnt = 0;
data_in[size_in++] = cid_req_list[i];
}
break;
case DEVICE_TIME_REQ:
if( lr1_mac_obj->device_time_user_req != USER_MAC_REQ_REQUESTED )
{
lr1_mac_obj->device_time_user_req = USER_MAC_REQ_REQUESTED;
data_in[size_in++] = cid_req_list[i];
}
break;
case PING_SLOT_INFO_REQ:
if( lr1_mac_obj->ping_slot_info_user_req != USER_MAC_REQ_REQUESTED )
{
lr1_mac_obj->ping_slot_info_user_req = USER_MAC_REQ_REQUESTED;
data_in[size_in++] = cid_req_list[i];
data_in[size_in++] = lr1_mac_obj->ping_slot_periodicity_req & 0x7;
lr1_mac_obj->tx_class_b_bit = 0;
}
break;
default:
return ERRORLORAWAN;
break;
}
}
return lr1mac_core_payload_send( lr1_mac_obj, PORTNWK, true, data_in, size_in, UNCONF_DATA_UP, target_time_ms );
}
status_lorawan_t lr1mac_core_payload_send_at_time( lr1_stack_mac_t* lr1_mac_obj, uint8_t fport, bool fport_enabled,
const uint8_t* data_in, uint8_t size_in, uint8_t packet_type,
uint32_t target_time_ms )
{
status_lorawan_t status =
lr1mac_core_payload_send( lr1_mac_obj, fport, fport_enabled, data_in, size_in, packet_type, target_time_ms );
if( status == OKLORAWAN )
{
lr1_mac_obj->send_at_time = true;
lr1_mac_obj->nb_trans_cpt = 1; // Overwrite nb_trans_cpt, when downlink is At Time, repetitions are out dated
}
return status;
}
status_lorawan_t lr1mac_core_payload_send( lr1_stack_mac_t* lr1_mac_obj, uint8_t fport, bool fport_enabled,
const uint8_t* data_in, uint8_t size_in, uint8_t packet_type,
uint32_t target_time_ms )
{
if( fport_enabled == false )
{
size_in = 0;
}
status_lorawan_t status = smtc_real_is_payload_size_valid( lr1_mac_obj->real, lr1_mac_obj->tx_data_rate, size_in,
UP_LINK, lr1_mac_obj->tx_fopts_current_length );
if( status == ERRORLORAWAN )
{
SMTC_MODEM_HAL_TRACE_ERROR( "PAYLOAD SIZE TOO HIGH\n" );
return ERRORLORAWAN;
}
if( ( packet_type != CONF_DATA_UP ) && ( packet_type != UNCONF_DATA_UP ) )
{
SMTC_MODEM_HAL_TRACE_ERROR( "PAYLOAD PACKET TYPE INVALID\n" );
return ERRORLORAWAN;
}
if( lr1_mac_obj->activation_mode == ACTIVATION_MODE_OTAA )
{
if( lr1_mac_obj->join_status != JOINED )
{
SMTC_MODEM_HAL_TRACE_ERROR( "OTAA DEVICE NOT JOINED YET\n" );
return ERRORLORAWAN;
}
}
if( lr1_mac_obj->lr1mac_state != LWPSTATE_IDLE )
{
SMTC_MODEM_HAL_TRACE_ERROR( "LP STATE NOT EQUAL TO IDLE\n" );
return ERRORLORAWAN;
}
// Decrement duty cycle before check the available DTC
if( smtc_real_get_next_channel( lr1_mac_obj->real, lr1_mac_obj->tx_data_rate, &lr1_mac_obj->tx_frequency,
&lr1_mac_obj->rx1_frequency, &lr1_mac_obj->nb_available_tx_channel ) != OKLORAWAN )
{
return ERRORLORAWAN;
}
if( lr1_stack_network_next_free_duty_cycle_ms_get( lr1_mac_obj ) > 0 )
{
SMTC_MODEM_HAL_TRACE_WARNING( "Network Duty Cycle toff\n" );
return ERRORLORAWAN;
}
lr1_mac_obj->timestamp_failsafe = smtc_modem_hal_get_time_in_s( );
lr1_mac_obj->rtc_target_timer_ms = target_time_ms;
lr1_mac_obj->tx_fport = fport;
lr1_mac_obj->tx_fport_present = fport_enabled;
lr1_mac_obj->tx_mtype = packet_type;
// Because Network payload are sent unconfirmed, we have to keep the Rx ACK bit for the App layer
lr1_mac_obj->rx_down_data.rx_metadata.rx_ack_bit = false;
// copy payload after the update of the lr1mac object
if( data_in != NULL )
{
lr1_mac_obj->app_payload_size = size_in;
copy_user_payload( lr1_mac_obj, data_in, size_in );
}
else
{
lr1_mac_obj->app_payload_size = 0;
}
lr1_stack_mac_tx_frame_build( lr1_mac_obj );
lr1_stack_mac_tx_frame_encrypt( lr1_mac_obj );
lr1_mac_obj->nb_trans_cpt = lr1_mac_obj->nb_trans;
lr1_mac_obj->lr1mac_state = LWPSTATE_SEND;
return OKLORAWAN;
}
/**************************************************/
/* LoraWan AdrModeSelect Method */
/**************************************************/
status_lorawan_t lr1mac_core_dr_strategy_set( lr1_stack_mac_t* lr1_mac_obj, dr_strategy_t adr_mode_select )
{
status_lorawan_t status;
dr_strategy_t adr_mode_select_cpy = lr1_mac_obj->adr_mode_select;
lr1_mac_obj->adr_mode_select = adr_mode_select;
if( adr_mode_select == STATIC_ADR_MODE )
{
lr1_mac_obj->tx_data_rate_adr = smtc_real_get_min_tx_channel_dr( lr1_mac_obj->real );
}
else
{
lr1_mac_obj->tx_power = smtc_real_get_default_max_eirp( lr1_mac_obj->real );
}
smtc_real_set_dr_distribution( lr1_mac_obj->real, adr_mode_select, &lr1_mac_obj->nb_trans );
status =
smtc_real_get_next_tx_dr( lr1_mac_obj->real, lr1_mac_obj->join_status, &lr1_mac_obj->adr_mode_select,
&lr1_mac_obj->tx_data_rate, lr1_mac_obj->tx_data_rate_adr, &lr1_mac_obj->adr_enable );
if( status == ERRORLORAWAN ) // new adr profile no compatible with channel mask, retrieve old adr profile
{
lr1_mac_obj->adr_mode_select = adr_mode_select_cpy;
smtc_real_set_dr_distribution( lr1_mac_obj->real, adr_mode_select_cpy, &lr1_mac_obj->nb_trans );
smtc_real_get_next_tx_dr( lr1_mac_obj->real, lr1_mac_obj->join_status, &lr1_mac_obj->adr_mode_select,
&lr1_mac_obj->tx_data_rate, lr1_mac_obj->tx_data_rate_adr, &lr1_mac_obj->adr_enable );
}
return ( status );
}
/**************************************************/
/* LoraWan AdrModeSelect Get Method */
/**************************************************/
dr_strategy_t lr1mac_core_dr_strategy_get( lr1_stack_mac_t* lr1_mac_obj )
{
return ( lr1_mac_obj->adr_mode_select );
}
/**************************************************/
/* LoraWan GetDevAddr Method */
/**************************************************/
uint32_t lr1mac_core_devaddr_get( lr1_stack_mac_t* lr1_mac_obj )
{
return ( lr1_mac_obj->dev_addr );
}
status_lorawan_t lr1mac_core_devaddr_set( lr1_stack_mac_t* lr1_mac_obj, uint32_t dev_addr )
{
if( lr1_mac_obj->activation_mode == ACTIVATION_MODE_ABP )
{
lr1_mac_obj->dev_addr = dev_addr;
return OKLORAWAN;
}
return ERRORLORAWAN;
}
/**************************************************/
/* LoraWan GetNextPower Method */
/**************************************************/
uint8_t lr1mac_core_next_power_get( lr1_stack_mac_t* lr1_mac_obj )
{
return ( lr1_mac_obj->tx_power );
}
/**************************************************/
/* LoraWan GetLorawanProcessState Method */
/**************************************************/
lr1mac_states_t lr1mac_core_state_get( lr1_stack_mac_t* lr1_mac_obj )
{
return ( lr1_mac_obj->lr1mac_state );
}
/**************************************************/
/* LoraWan NVM */
/**************************************************/
void lr1mac_core_context_save( lr1_stack_mac_t* lr1_mac_obj )
{
lr1_mac_nvm_context_t ctx = { 0 };
smtc_modem_hal_context_restore( CONTEXT_LORAWAN_STACK, lr1_mac_obj->stack_id * sizeof( ctx ), ( uint8_t* ) &ctx,
sizeof( ctx ) );
if( ( ctx.devnonce != lr1_mac_obj->dev_nonce ) ||
( memcmp( ctx.join_nonce, lr1_mac_obj->join_nonce, sizeof( ctx.join_nonce ) ) != 0 ) ||
( ctx.certification_enabled != lr1_mac_obj->is_lorawan_modem_certification_enabled ) ||
( ctx.region != lr1_mac_obj->real->region_type ) )
{
ctx.ctx_version = LORAWAN_NVM_CTX_VERSION;
ctx.devnonce = lr1_mac_obj->dev_nonce;
memcpy( ctx.join_nonce, lr1_mac_obj->join_nonce, sizeof( ctx.join_nonce ) );
ctx.certification_enabled = lr1_mac_obj->is_lorawan_modem_certification_enabled;
ctx.region = lr1_mac_obj->real->region_type;
ctx.crc = lr1mac_utilities_crc( ( uint8_t* ) &ctx, sizeof( ctx ) - sizeof( ctx.crc ) );
smtc_modem_hal_context_store( CONTEXT_LORAWAN_STACK, lr1_mac_obj->stack_id * sizeof( ctx ), ( uint8_t* ) &ctx,
sizeof( ctx ) );
// dummy context reading to ensure context store is done before exiting the function
lr1_mac_nvm_context_t dummy_context = { 0 };
smtc_modem_hal_context_restore( CONTEXT_LORAWAN_STACK, lr1_mac_obj->stack_id * sizeof( ctx ),
( uint8_t* ) &dummy_context, sizeof( dummy_context ) );
}
}
status_lorawan_t lr1mac_core_context_load( lr1_stack_mac_t* lr1_mac_obj )
{
lr1_mac_nvm_context_t ctx = { 0 };
smtc_modem_hal_context_restore( CONTEXT_LORAWAN_STACK, lr1_mac_obj->stack_id * sizeof( ctx ), ( uint8_t* ) &ctx,
sizeof( ctx ) );
if( lr1mac_utilities_crc( ( uint8_t* ) &ctx, sizeof( ctx ) - sizeof( ctx.crc ) ) == ctx.crc )
{
lr1_mac_obj->dev_nonce = ctx.devnonce;
memcpy( lr1_mac_obj->join_nonce, ctx.join_nonce, sizeof( lr1_mac_obj->join_nonce ) );
lr1_mac_obj->is_lorawan_modem_certification_enabled = ctx.certification_enabled;
lr1_mac_obj->real->region_type = ctx.region;
return OKLORAWAN;
}
else
{ // == factory reset
SMTC_MODEM_HAL_TRACE_WARNING( "No valid DevNonce in NVM, use default (0)\n" );
return ERRORLORAWAN;
}
}
void lr1mac_core_context_factory_reset( lr1_stack_mac_t* lr1_mac_obj )
{
lr1_mac_nvm_context_t ctx = { 0 };
ctx.ctx_version = LORAWAN_NVM_CTX_VERSION;
memset( ctx.join_nonce, 0xFF, sizeof( ctx.join_nonce ) );
ctx.crc = lr1mac_utilities_crc( ( uint8_t* ) &ctx, sizeof( ctx ) - sizeof( ctx.crc ) );
smtc_modem_hal_context_store( CONTEXT_LORAWAN_STACK, lr1_mac_obj->stack_id * sizeof( ctx ), ( uint8_t* ) &ctx,
sizeof( ctx ) );
// dummy context reading to ensure context store is done before exiting the function
lr1_mac_nvm_context_t dummy_context = { 0 };
smtc_modem_hal_context_restore( CONTEXT_LORAWAN_STACK, lr1_mac_obj->stack_id * sizeof( ctx ),
( uint8_t* ) &dummy_context, sizeof( dummy_context ) );
}
/**************************************************/
/* LoraWan lr1mac_core_next_max_payload_length_get Method */
/**************************************************/
uint32_t lr1mac_core_next_max_payload_length_get( lr1_stack_mac_t* lr1_mac_obj )
{
return ( smtc_real_get_max_payload_size( lr1_mac_obj->real, lr1_mac_obj->tx_data_rate, UP_LINK ) -
lr1_mac_obj->tx_fopts_current_length - FHDROFFSET );
}
/**************************************************/
/* LoraWan lr1mac_core_next_dr_get Method */
/**************************************************/
uint8_t lr1mac_core_next_dr_get( lr1_stack_mac_t* lr1_mac_obj )
{ // note return datareate in case of adr
return ( lr1_mac_obj->tx_data_rate );
}
uint32_t lr1mac_core_next_frequency_get( lr1_stack_mac_t* lr1_mac_obj )
{
return ( lr1_mac_obj->tx_frequency );
}
lr1mac_activation_mode_t lr1mac_core_get_activation_mode( lr1_stack_mac_t* lr1_mac_obj )
{
return lr1_mac_obj->activation_mode;
}
void lr1mac_core_set_activation_mode( lr1_stack_mac_t* lr1_mac_obj, lr1mac_activation_mode_t activation_mode )
{
lr1_mac_obj->activation_mode = activation_mode;
}
uint16_t lr1mac_core_devnonce_get( lr1_stack_mac_t* lr1_mac_obj )
{
return lr1_mac_obj->dev_nonce;
}
uint32_t lr1mac_core_fcnt_up_get( lr1_stack_mac_t* lr1_mac_obj )
{
return ( lr1_mac_obj->fcnt_up );
}
uint32_t lr1mac_core_next_join_time_second_get( lr1_stack_mac_t* lr1_mac_obj )
{
return ( lr1_mac_obj->next_time_to_join_seconds );
}
smtc_real_region_types_t lr1mac_core_get_region( lr1_stack_mac_t* lr1_mac_obj )
{
return lr1_mac_obj->real->region_type;
}
status_lorawan_t lr1mac_core_set_region( lr1_stack_mac_t* lr1_mac_obj, smtc_real_region_types_t region_type )
{
if( smtc_real_is_supported_region( region_type ) == SMTC_REAL_STATUS_OK )
{
lr1_stack_mac_region_init( lr1_mac_obj, region_type );
lr1_stack_mac_region_config( lr1_mac_obj );
lr1mac_core_context_save( lr1_mac_obj );
// After a region change a new join should happen, reset join counter
lr1_mac_obj->retry_join_cpt = 0;
return OKLORAWAN;
}
return ERRORLORAWAN;
}
void lr1mac_core_set_no_rx_packet_threshold( lr1_stack_mac_t* lr1_mac_obj, uint16_t no_rx_packet_reset_threshold )
{
lr1_mac_obj->no_rx_packet_reset_threshold = no_rx_packet_reset_threshold;
}
uint16_t lr1mac_core_get_no_rx_packet_threshold( lr1_stack_mac_t* lr1_mac_obj )
{
return lr1_mac_obj->no_rx_packet_reset_threshold;
}
uint16_t lr1mac_core_get_current_adr_ack_cnt( lr1_stack_mac_t* lr1_mac_obj )
{
return lr1_mac_obj->adr_ack_cnt;
}
uint16_t lr1mac_core_get_current_no_rx_packet_in_mobile_mode( lr1_stack_mac_t* lr1_mac_obj )
{
return lr1_mac_obj->no_rx_packet_count_in_mobile_mode;
}
void lr1mac_core_reset_no_rx_packet_in_mobile_mode_cnt( lr1_stack_mac_t* lr1_mac_obj )
{
lr1_mac_obj->no_rx_packet_count_in_mobile_mode = 0;
}
uint16_t lr1mac_core_get_current_no_rx_packet_cnt( lr1_stack_mac_t* lr1_mac_obj )
{
return lr1_mac_obj->no_rx_packet_count;
}
bool lr1mac_core_available_link_adr_get( lr1_stack_mac_t* lr1_mac_obj )
{
if( lr1_mac_obj->available_link_adr == true )
{
lr1_mac_obj->available_link_adr = false; // reset the internal flag when the function is called by upper layer
return ( true );
}
return false;
}
void lr1mac_core_certification_set( lr1_stack_mac_t* lr1_mac_obj, uint8_t enable )
{
lr1_mac_obj->is_lorawan_modem_certification_enabled = enable;
lr1mac_core_context_save( lr1_mac_obj );
}
uint8_t lr1mac_core_certification_get( lr1_stack_mac_t* lr1_mac_obj )
{
return lr1_mac_obj->is_lorawan_modem_certification_enabled;
}
lr1mac_version_t lr1mac_core_get_lorawan_version( lr1_stack_mac_t* lr1_mac_obj )
{
lr1mac_version_t version = { .major = LORAWAN_VERSION_MAJOR,
.minor = LORAWAN_VERSION_MINOR,
.patch = LORAWAN_VERSION_PATCH,
.revision = LORAWAN_VERSION_REVISION };
return version;
}
bool lr1mac_core_convert_rtc_to_gps_epoch_time( lr1_stack_mac_t* lr1_mac_obj, uint32_t rtc_ms,
uint32_t* seconds_since_epoch, uint32_t* fractional_second )
{
uint32_t tmp_seconds_since_epoch;
uint32_t tmp_fractional_second;
uint32_t delta_tx_rx_ms = rtc_ms - lr1_mac_obj->timestamp_tx_done_device_time_req_ms;
tmp_fractional_second = lr1_mac_obj->fractional_second + delta_tx_rx_ms;
uint32_t tmp_s = tmp_fractional_second / 1000; // number of seconds without ms
tmp_fractional_second = tmp_fractional_second - ( tmp_s * 1000 );
tmp_seconds_since_epoch = lr1_mac_obj->seconds_since_epoch + tmp_s;
SMTC_MODEM_HAL_TRACE_PRINTF_DEBUG( "tx: %u, rx:%u, diff:%u\n", lr1_mac->timestamp_tx_done_device_time_req_ms,
lr1_mac->timestamp_last_device_time_ans_s, delta_tx_rx_ms );
SMTC_MODEM_HAL_TRACE_PRINTF_DEBUG( "DeviceTime GPS : %u.%u s\n", tmp_seconds_since_epoch, tmp_fractional_second );
*seconds_since_epoch = tmp_seconds_since_epoch;
*fractional_second = tmp_fractional_second;
return lr1mac_core_is_time_valid( lr1_mac_obj );
}
bool lr1mac_core_is_time_valid( lr1_stack_mac_t* lr1_mac_obj )
{
uint32_t rtc_s = smtc_modem_hal_get_time_in_s( );
if( ( lr1_mac_obj->timestamp_last_device_time_ans_s != 0 ) &&
( ( int32_t ) ( rtc_s - lr1_mac_obj->timestamp_last_device_time_ans_s -
lr1_mac_obj->device_time_invalid_delay_s ) < 0 ) )
{
return true;
}
return false;
}
uint32_t lr1mac_core_get_timestamp_last_device_time_ans_s( lr1_stack_mac_t* lr1_mac_obj )
{
return lr1_mac_obj->timestamp_last_device_time_ans_s;
}
uint32_t lr1mac_core_get_time_left_connection_lost( lr1_stack_mac_t* lr1_mac_obj )
{
uint32_t rtc_s = smtc_modem_hal_get_time_in_s( );
uint32_t time_since_last_correction_s = 0;
uint32_t time_left_connection_lost = lr1_mac_obj->device_time_invalid_delay_s;
if( lr1_mac_obj->timestamp_last_device_time_ans_s > 0 )
{
time_since_last_correction_s = rtc_s - lr1_mac_obj->timestamp_last_device_time_ans_s;
if( time_since_last_correction_s <= lr1_mac_obj->device_time_invalid_delay_s )
{
time_left_connection_lost = lr1_mac_obj->device_time_invalid_delay_s - time_since_last_correction_s;
// manage the wrapping case shouldn't occur if it occur launch a sync in 1h
if( time_left_connection_lost > lr1_mac_obj->device_time_invalid_delay_s )
{
time_left_connection_lost = 3600; // todo
}
}
}
return ( time_left_connection_lost );
}
status_lorawan_t lr1_mac_core_set_device_time_invalid_delay_s( lr1_stack_mac_t* lr1_mac_obj, uint32_t delay_s )
{
if( delay_s > LR1MAC_DEVICE_TIME_DELAY_TO_BE_NO_SYNC )
{
return ERRORLORAWAN;
}
lr1_mac_obj->device_time_invalid_delay_s = delay_s;
return OKLORAWAN;
}
uint32_t lr1_mac_core_get_device_time_invalid_delay_s( lr1_stack_mac_t* lr1_mac_obj )
{
return lr1_mac_obj->device_time_invalid_delay_s;
}
status_lorawan_t lr1mac_core_set_ping_slot_periodicity( lr1_stack_mac_t* lr1_mac_obj, uint8_t ping_slot_periodicity )
{
if( ping_slot_periodicity > SMTC_REAL_PING_SLOT_PERIODICITY_DEFAULT )
{
return ERRORLORAWAN;
}
// The periodicity must not be modified when the MAC command is currently requested