LoRa Edge LR1110 EVK 接入腾讯云物联网开发平台

# wget https://developer.arm.com/-/media/Files/downloads/gnu-rm/10-2020q4/gcc-arm-none-eabi-10-2020-q4-major-x86_64-linux.tar.bz2
# tar -jxvf gcc-arm-none-eabi-10-2020-q4-major-x86_64-linux.tar.bz2 -C /usr/local

# vim ~/.bashrc

export PATH=$PATH:/usr/local/gcc-arm-none-eabi-10-2020-q4-major/bin/        

# arm-none-eabi-gcc -v

/**
 * @brief LoRaWAN User credentials
 * 
 */
#define USER_LORAWAN_DEVICE_EUI     { 0x20, 0x21, 0x08, 0x24, 0x20, 0x21, 0x08, 0x24 }
#define USER_LORAWAN_JOIN_EUI       { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }
#define USER_LORAWAN_APP_KEY        { 0x20, 0x21, 0x08, 0x24, 0x20, 0x21, 0x08, 0x24, \
                                      0x20, 0x21, 0x08, 0x24, 0x20, 0x21, 0x08, 0x24 }

The version 2.x of LoRa Basic Modem supports two kinds of frequency plan for CN470:
• CN470 RP_1B, supports 96 uplink and 48 downlink;
• Mono channel mode, supports only one channel. It is in fact a subset of CN470 RP_1B. This mode
can be used for the single channel demo gateway released together for demonstration purpose.

make full HYBRID_CHINA=yes

void main_geolocation( void )
{
    ...
#if defined( HYBRID_CN470_MONO_CHANNEL )
    freq_tx_cn470_mono_channel_mhz = 486300000;
    for( uint8_t i = 0; i < 16; i++ )
    {
        custom_datarate[i] = 0x05;  // Force use of SF7
    }
    SMTC_MODEM_HAL_TRACE_INFO( "HYBRID China version will transmit at %d Hz\n", freq_tx_cn470_mono_channel_mhz );
#endif
    ...
}

#if defined( CHINA_RP_1_DEMO )
#define MODEM_EXAMPLE_ASSISTANCE_POSITION_LAT  (31.185)
#define MODEM_EXAMPLE_ASSISTANCE_POSITION_LONG  (121.4238)
#define MODEM_EXAMPLE_ASSISTANCE_POSITION_TEXT  "Shanghai, CHINA"
#else
#define MODEM_EXAMPLE_ASSISTANCE_POSITION_LAT  (45.181454)
#define MODEM_EXAMPLE_ASSISTANCE_POSITION_LONG  (5.720893)
#define MODEM_EXAMPLE_ASSISTANCE_POSITION_TEXT  "Grenoble, FRANCE"
#endif

import base64
import requests

YOUR_TOKEN = 'Type your token, available at https://www.loracloud.com/portal/geolocation/token_management'

url = 'https://gls.loracloud.com/api/v3/almanac/full'
my_header = {'Ocp-Apim-Subscription-Key': YOUR_TOKEN}
res = requests.get(url, headers=my_header)
raw_bytes = bytes(base64.b64decode(res.json()["result"]["almanac_image"]))
my_almanac_in_hex = "static const lr1110_gnss_almanac_full_update_bytestream_t full_almanac = { "
my_almanac_in_hex += ", ".join("0x{:02X}".format(byt) for byt in raw_bytes)
my_almanac_in_hex += " };"
print(my_almanac_in_hex)

$ python --version
Python 3.7.3

$ python lr1110_almanac_manual_update.py

#include "lr1110_gnss.h"

// Almanac loaded from loracloud at 2021-08-24 with python script
static const lr1110_gnss_almanac_full_update_bytestream_t full_almanac = { 0x80, 0x64, 0x03, 
....
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x08 };

//#include "almanac_2021_04_06.h"
#include "almanac_2021_08_24.h"

0 - Cmd link_adr_parser = 51 ff 00 51 
0 - MULTIPLE LINK ADR REQ , channel mask = 0xff , ChMAstCntl = 0x5
ChCtrl = 0x5, ChMask = 0x00ff
unwrapped channel tx mask = 0xff ff ff ff ff ff ff ff ff ff ff 00  
[0;33mWARN : Not acceptable data rate in mobile mode
[0;33mWARN : INVALID CHANNEL MASK in Mobile Mode 

status_lorawan_t smtc_real_is_channel_mask_for_mobile_mode( const lr1_stack_mac_t* lr1_mac )
{
    ...

	return ( OKLORAWAN ); // return early for work around
		
    for( int i = 0; i < const_number_of_tx_channel; i++ )
    {
        if( SMTC_GET_BIT8( unwrapped_channel_mask_ctx, i ) == CHANNEL_ENABLED )
        {
            for( uint8_t dr = const_min_tx_dr; dr < const_max_tx_dr; dr++ )
            {
                if( SMTC_GET_BIT16( &dr_bitfield_tx_channel_ctx[i], dr ) == 1 )
                {
                    if( ( dr >= min_mobile_dr ) && ( dr <= max_mobile_dr ) )
                    {
                        return ( OKLORAWAN );
                    }
                }
            }
        }
    }
    SMTC_MODEM_HAL_TRACE_WARNING( "Not acceptable data rate in mobile mode\n" );
    return ( status );
}

#define LBT_THRESHOLD_DBM_CN_470_RP_1_0            (int16_t)(-50)  // TODO value must be checked

make full HYBRID_CHINA=yes

 DevNonce = 446
 NbOfReset = 188
 Region = CN470_RP_1_0
rp_hook_init done
smtc_real_config done
TX - idx:0, freq: 470300000, dr: 0x3f,
TX - idx:1, freq: 470500000, dr: 0x3f,
TX - idx:2, freq: 470700000, dr: 0x3f,
TX - idx:3, freq: 470900000, dr: 0x3f,

配置接入域名：loragw.things.qcloud.com
接入端口：1700