esp32_ethernet_milight_hub/lib/MiLight/PacketSender.cpp
2021-01-15 22:49:01 +01:00

125 lines
No EOL
3.6 KiB
C++

#include <PacketSender.h>
#include <MiLightRadioConfig.h>
PacketSender::PacketSender(
RadioSwitchboard& radioSwitchboard,
Settings& settings,
PacketSentHandler packetSentHandler
) : radioSwitchboard(radioSwitchboard)
, settings(settings)
, currentPacket(nullptr)
, packetRepeatsRemaining(0)
, packetSentHandler(packetSentHandler)
, lastSend(0)
, currentResendCount(settings.packetRepeats)
, throttleMultiplier(
std::ceil(
(settings.packetRepeatThrottleSensitivity / 1000.0) * settings.packetRepeats
)
)
{ }
void PacketSender::enqueue(uint8_t* packet, const MiLightRemoteConfig* remoteConfig, const size_t repeatsOverride) {
#ifdef DEBUG_PRINTF
Serial.println("Enqueuing packet");
#endif
size_t repeats = repeatsOverride == DEFAULT_PACKET_SENDS_VALUE
? this->currentResendCount
: repeatsOverride;
queue.push(packet, remoteConfig, repeats);
}
void PacketSender::loop() {
// Switch to the next packet if we're done with the current one
if (packetRepeatsRemaining == 0 && !queue.isEmpty()) {
nextPacket();
}
// If there's a packet we're handling, deal with it
if (currentPacket != nullptr && packetRepeatsRemaining > 0) {
handleCurrentPacket();
}
}
bool PacketSender::isSending() {
return packetRepeatsRemaining > 0 || !queue.isEmpty();
}
void PacketSender::nextPacket() {
#ifdef DEBUG_PRINTF
Serial.printf("Switching to next packet, %d packets in queue\n", queue.size());
#endif
currentPacket = queue.pop();
if (currentPacket->repeatsOverride > 0) {
packetRepeatsRemaining = currentPacket->repeatsOverride;
} else {
packetRepeatsRemaining = settings.packetRepeats;
}
// Adjust resend count according to throttling rules
updateResendCount();
}
void PacketSender::handleCurrentPacket() {
// Always switch radio. could've been listening in another context
radioSwitchboard.switchRadio(currentPacket->remoteConfig);
size_t numToSend = std::min(packetRepeatsRemaining, settings.packetRepeatsPerLoop);
sendRepeats(numToSend);
packetRepeatsRemaining -= numToSend;
// If we're done sending this packet, fire the sent packet callback
if (packetRepeatsRemaining == 0 && packetSentHandler != nullptr) {
packetSentHandler(currentPacket->packet, *currentPacket->remoteConfig);
}
}
size_t PacketSender::queueLength() const {
return queue.size();
}
size_t PacketSender::droppedPackets() const {
return queue.getDroppedPacketCount();
}
void PacketSender::sendRepeats(size_t num) {
size_t len = currentPacket->remoteConfig->packetFormatter->getPacketLength();
#ifdef DEBUG_PRINTF
Serial.printf_P(PSTR("Sending packet (%d repeats): \n"), num);
for (size_t i = 0; i < len; i++) {
Serial.printf_P(PSTR("%02X "), currentPacket->packet[i]);
}
Serial.println();
int iStart = millis();
#endif
for (size_t i = 0; i < num; ++i) {
radioSwitchboard.write(currentPacket->packet, len);
}
#ifdef DEBUG_PRINTF
int iElapsed = millis() - iStart;
Serial.print("Elapsed: ");
Serial.println(iElapsed);
#endif
}
void PacketSender::updateResendCount() {
unsigned long now = millis();
long millisSinceLastSend = now - lastSend;
long x = (millisSinceLastSend - settings.packetRepeatThrottleThreshold);
long delta = x * throttleMultiplier;
int signedResends = static_cast<int>(this->currentResendCount) + delta;
if (signedResends < static_cast<int>(settings.packetRepeatMinimum)) {
signedResends = settings.packetRepeatMinimum;
} else if (signedResends > static_cast<int>(settings.packetRepeats)) {
signedResends = settings.packetRepeats;
}
this->currentResendCount = signedResends;
this->lastSend = now;
}