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pkg/semtech-loramac: persist updated RX2 params

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After a successful OTAA join procedure, the network may change the RX2 channel datarate. It's
required to also persist to be able to correctly receive downlink after a reboot
This commit is contained in:
Alexandre Abadie 2019-05-30 13:33:04 +02:00
parent bcad9ee517
commit ba8e7e5eaf
No known key found for this signature in database
GPG Key ID: 1C919A403CAE1405
1 changed files with 61 additions and 25 deletions
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86
pkg/semtech-loramac/contrib/semtech_loramac.c
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@ -60,6 +60,7 @@ sx127x_t sx127x;
RadioEvents_t semtech_loramac_radio_events;
LoRaMacPrimitives_t semtech_loramac_primitives;
LoRaMacCallback_t semtech_loramac_callbacks;
extern LoRaMacParams_t LoRaMacParams;
typedef struct {
uint8_t *payload;
@ -183,19 +184,33 @@ static void mlme_indication(MlmeIndication_t *indication)
}
#ifdef MODULE_PERIPH_EEPROM
static inline void _set_uplink_counter(semtech_loramac_t *mac, uint8_t *counter)
static size_t _read_uint32(size_t pos, uint32_t *value)
{
uint32_t counter4 = ((uint32_t)counter[0] << 24 |
(uint32_t)counter[1] << 16 |
(uint32_t)counter[2] << 8 |
counter[3]);
uint8_t array[4] = { 0 };
size_t ret = eeprom_read(pos, array, sizeof(uint32_t));
*value = ((uint32_t)array[0] << 24 | (uint32_t)array[1] << 16 |
(uint32_t)array[2] << 8 | array[3]);
return ret;
}
DEBUG("[semtech-loramac] reading uplink counter: %" PRIu32 " \n", counter4);
static size_t _write_uint32(size_t pos, uint32_t value)
{
uint8_t array[4] = { 0 };
array[0] = (uint8_t)(value >> 24);
array[1] = (uint8_t)(value >> 16);
array[2] = (uint8_t)(value >> 8);
array[3] = (uint8_t)(value);
return eeprom_write(pos, array, sizeof(uint32_t));
}
static inline void _set_uplink_counter(semtech_loramac_t *mac, uint32_t counter)
{
DEBUG("[semtech-loramac] reading uplink counter: %" PRIu32 " \n", counter);
mutex_lock(&mac->lock);
MibRequestConfirm_t mibReq;
mibReq.Type = MIB_UPLINK_COUNTER;
mibReq.Param.UpLinkCounter = counter4;
mibReq.Param.UpLinkCounter = counter;
LoRaMacMibSetRequestConfirm(&mibReq);
mutex_unlock(&mac->lock);
}
@ -240,14 +255,26 @@ static inline void _read_loramac_config(semtech_loramac_t *mac)
/* Read and set device address */
uint8_t devaddr[LORAMAC_DEVADDR_LEN];
pos += eeprom_read(pos, devaddr, LORAMAC_DEVADDR_LEN);
semtech_loramac_set_devaddr(mac, devaddr);
/* uplink counter */
uint8_t counter[4] = { 0 };
pos += eeprom_read(pos, counter, 4);
_set_uplink_counter(mac, counter);
/* Read uplink counter */
uint32_t ul_counter;
pos += _read_uint32(pos, &ul_counter);
_set_uplink_counter(mac, ul_counter);
/* Read RX2 freq */
uint32_t rx2_freq;
pos += _read_uint32(pos, &rx2_freq);
DEBUG("[semtech-loramac] reading rx2 freq: %" PRIu32 "\n", rx2_freq);
semtech_loramac_set_rx2_freq(mac, rx2_freq);
/* Read RX2 datarate */
uint8_t dr;
pos += eeprom_read(pos, &dr, 1);
DEBUG("[semtech-loramac] reading rx2 dr: %d\n", dr);
semtech_loramac_set_rx2_dr(mac, dr);
/* Read join state */
uint8_t joined = eeprom_read_byte(pos);
_set_join_state(mac, (bool)joined);
}
@ -260,19 +287,15 @@ static inline size_t _save_uplink_counter(semtech_loramac_t *mac)
LORAMAC_APPKEY_LEN + LORAMAC_APPSKEY_LEN +
LORAMAC_NWKSKEY_LEN + LORAMAC_DEVADDR_LEN;
uint8_t counter[LORAMAC_DEVADDR_LEN];
uint32_t ul_counter;
mutex_lock(&mac->lock);
MibRequestConfirm_t mibReq;
mibReq.Type = MIB_UPLINK_COUNTER;
LoRaMacMibGetRequestConfirm(&mibReq);
DEBUG("[semtech-loramac] saving uplink counter: %" PRIu32 " \n",
mibReq.Param.UpLinkCounter);
counter[0] = (uint8_t)(mibReq.Param.UpLinkCounter >> 24);
counter[1] = (uint8_t)(mibReq.Param.UpLinkCounter >> 16);
counter[2] = (uint8_t)(mibReq.Param.UpLinkCounter >> 8);
counter[3] = (uint8_t)(mibReq.Param.UpLinkCounter);
ul_counter = mibReq.Param.UpLinkCounter;
mutex_unlock(&mac->lock);
return eeprom_write(pos, counter, LORAMAC_DEVADDR_LEN);
DEBUG("[semtech-loramac] saving uplink counter: %" PRIu32 " \n", ul_counter);
return _write_uint32(pos, ul_counter);
}
void semtech_loramac_save_config(semtech_loramac_t *mac)
@ -302,6 +325,16 @@ void semtech_loramac_save_config(semtech_loramac_t *mac)
/* save uplink counter, mainly used for ABP activation */
pos += _save_uplink_counter(mac);
/* save RX2 freq */
uint32_t rx2_freq = semtech_loramac_get_rx2_freq(mac);
DEBUG("[semtech-loramac] saving rx2 freq: %" PRIu32 "\n", rx2_freq);
pos += _write_uint32(pos, rx2_freq);
/* save RX2 dr */
uint8_t dr = semtech_loramac_get_rx2_dr(mac);
DEBUG("[semtech-loramac] saving rx2 dr: %d\n", dr);
pos += eeprom_write(pos, &dr, 1);
/* save join state */
uint8_t joined = (uint8_t)semtech_loramac_is_mac_joined(mac);
eeprom_write_byte(pos, joined);
@ -319,15 +352,17 @@ void semtech_loramac_erase_config(void)
return;
}
MibRequestConfirm_t mibReq;
size_t uplink_counter_len = sizeof(mibReq.Param.UpLinkCounter);
size_t joined_state_len = sizeof(mibReq.Param.IsNetworkJoined);
size_t uplink_counter_len = sizeof(uint32_t);
size_t rx2_freq_len = sizeof(uint32_t);
size_t rx2_dr_len = sizeof(uint8_t);
size_t joined_state_len = sizeof(uint8_t);
size_t end = (pos + SEMTECH_LORAMAC_EEPROM_MAGIC_LEN +
LORAMAC_DEVEUI_LEN + LORAMAC_APPEUI_LEN +
LORAMAC_APPKEY_LEN + LORAMAC_APPSKEY_LEN +
LORAMAC_NWKSKEY_LEN + LORAMAC_DEVADDR_LEN +
uplink_counter_len + joined_state_len);
uplink_counter_len + rx2_freq_len + rx2_dr_len +
joined_state_len);
for (size_t p = pos; p < end; p++) {
eeprom_write_byte(p, 0);
}
@ -362,7 +397,6 @@ void _init_loramac(semtech_loramac_t *mac,
#ifdef MODULE_PERIPH_EEPROM
_read_loramac_config(mac);
#endif
}
static void _join_otaa(semtech_loramac_t *mac)
@ -623,6 +657,8 @@ void *_semtech_loramac_event_loop(void *arg)
/* Status is OK, node has joined the network */
DEBUG("[semtech-loramac] join succeeded\n");
msg_ret.content.value = SEMTECH_LORAMAC_JOIN_SUCCEEDED;
/* Set RX2 DR parameters in the MIB from MAC params */
semtech_loramac_set_rx2_dr(mac, LoRaMacParams.Rx2Channel.Datarate);
}
else {
DEBUG("[semtech-loramac] join not successful\n");