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- /*
- * The MySensors Arduino library handles the wireless radio link and protocol
- * between your home built sensors/actuators and HA controller of choice.
- * The sensors forms a self healing radio network with optional repeaters. Each
- * repeater and gateway builds a routing tables in EEPROM which keeps track of the
- * network topology allowing messages to be routed to nodes.
- *
- * Created by Henrik Ekblad <henrik.ekblad@mysensors.org>
- * Copyright (C) 2013-2018 Sensnology AB
- * Full contributor list: https://github.com/mysensors/MySensors/graphs/contributors
- *
- * Documentation: http://www.mysensors.org
- * Support Forum: http://forum.mysensors.org
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * version 2 as published by the Free Software Foundation.
- */
-
- #include "hal/transport/RFM95/driver/RFM95.h"
- #if defined(MY_RFM95_ENABLE_ENCRYPTION)
- #include "drivers/AES/AES.h"
- #endif
-
- #if defined(MY_RFM95_ENABLE_ENCRYPTION)
- AES RFM95_aes;
- uint8_t RFM95_dataenc[32] = {0};
- #endif
-
- #if defined(MY_RFM95_ENABLE_ENCRYPTION)
- #include "drivers/AES/AES.cpp"
- #endif
-
- bool transportInit(void)
- {
- #if defined(MY_RFM95_ENABLE_ENCRYPTION)
- uint8_t RFM95_psk[16];
- #ifdef MY_SIGNING_SIMPLE_PASSWD
- (void)memset((void *)RFM95_psk, 0, 16);
- (void)memcpy((void *)RFM95_psk, MY_SIGNING_SIMPLE_PASSWD, strnlen(MY_SIGNING_SIMPLE_PASSWD, 16));
- #else
- hwReadConfigBlock((void *)RFM95_psk, (void *)EEPROM_RF_ENCRYPTION_AES_KEY_ADDRESS, 16);
- #endif
- //set up AES-key
- RFM95_aes.set_key(RFM95_psk, 16);
- // Make sure it is purged from memory when set
- (void)memset((void *)RFM95_psk, 0, 16);
- #endif
-
- const bool result = RFM95_initialise(MY_RFM95_FREQUENCY);
- #if defined(MY_RFM95_TCXO)
- RFM95_enableTCXO();
- #endif
- #if !defined(MY_GATEWAY_FEATURE) && !defined(MY_RFM95_ATC_MODE_DISABLED)
- // only enable ATC mode in nodes
- RFM95_ATCmode(true, MY_RFM95_ATC_TARGET_RSSI);
- #endif
- return result;
- }
-
- void transportSetAddress(const uint8_t address)
- {
- RFM95_setAddress(address);
- }
-
- uint8_t transportGetAddress(void)
- {
- return RFM95_getAddress();
- }
-
- bool transportSend(const uint8_t to, const void *data, const uint8_t len, const bool noACK)
- {
- #if defined(MY_RFM95_ENABLE_ENCRYPTION)
- // copy input data because it is read-only
- (void)memcpy((void *)RFM95_dataenc, (const void *)data, len);
- // has to be adjusted, WIP!
- RFM95_aes.set_IV(0);
- const uint8_t finalLength = len > 16 ? 32 : 16;
- //encrypt data
- RFM95_aes.cbc_encrypt(RFM95_dataenc, RFM95_dataenc, finalLength / 16);
- if (noACK) {
- (void)RFM95_sendWithRetry(to, RFM95_dataenc, finalLength, 0, 0);
- return true;
- }
- return RFM95_sendWithRetry(to, RFM95_dataenc, finalLength);
- #else
- if (noACK) {
- (void)RFM95_sendWithRetry(to, data, len, 0, 0);
- return true;
- }
- return RFM95_sendWithRetry(to, data, len);
- #endif
- }
-
- bool transportAvailable(void)
- {
- RFM95_handler();
- return RFM95_available();
- }
-
- bool transportSanityCheck(void)
- {
- return RFM95_sanityCheck();
- }
-
- uint8_t transportReceive(void *data)
- {
- uint8_t len = RFM95_receive((uint8_t *)data, MAX_MESSAGE_LENGTH);
- #if defined(MY_RFM95_ENABLE_ENCRYPTION)
- // has to be adjusted, WIP!
- RFM95_aes.set_IV(0);
- // decrypt data
- if (RFM95_aes.cbc_decrypt((uint8_t *)data, (uint8_t *)data, len > 16 ? 2 : 1) != AES_SUCCESS) {
- len = 0;
- }
- #endif
- return len;
- }
-
- void transportSleep(void)
- {
- (void)RFM95_sleep();
- }
-
- void transportStandBy(void)
- {
- (void)RFM95_standBy();
- }
-
- void transportPowerDown(void)
- {
- RFM95_powerDown();
- }
-
- void transportPowerUp(void)
- {
- RFM95_powerUp();
- }
-
- void transportToggleATCmode(const bool OnOff, const int16_t targetRSSI)
- {
- RFM95_ATCmode(OnOff, targetRSSI);
- }
-
- int16_t transportGetSendingRSSI(void)
- {
- return RFM95_getSendingRSSI();
- }
-
- int16_t transportGetReceivingRSSI(void)
- {
- return RFM95_getReceivingRSSI();
- }
-
- int16_t transportGetSendingSNR(void)
- {
- return RFM95_getSendingSNR();
- }
-
- int16_t transportGetReceivingSNR(void)
- {
- return RFM95_getReceivingSNR();
- }
-
- int16_t transportGetTxPowerPercent(void)
- {
- return RFM95_getTxPowerPercent();
- }
-
- int16_t transportGetTxPowerLevel(void)
- {
- return RFM95_getTxPowerLevel();
- }
-
- bool transportSetTxPowerPercent(const uint8_t powerPercent)
- {
- return RFM95_setTxPowerPercent(powerPercent);
- }
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