openpilot is an open source driver assistance system. openpilot performs the functions of Automated Lane Centering and Adaptive Cruise Control for over 200 supported car makes and models.
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#include "stdafx.h"
#include "MessageTx_CAN.h"
#include "J2534Connection_CAN.h"
MessageTx_CAN::MessageTx_CAN(
std::shared_ptr<J2534Connection> connection_in,
PASSTHRU_MSG& to_send
) : MessageTx(connection_in, to_send), sentyet(FALSE), txInFlight(FALSE) {};
void MessageTx_CAN::execute() {
uint32_t addr = ((uint8_t)fullmsg.Data[0]) << 24 | ((uint8_t)fullmsg.Data[1]) << 16 |
((uint8_t)fullmsg.Data[2]) << 8 | ((uint8_t)fullmsg.Data[3]);
if (auto conn_sp = std::static_pointer_cast<J2534Connection_CAN>(this->connection.lock())) {
if (auto panda_dev_sp = conn_sp->getPandaDev()) {
auto payload = fullmsg.Data.substr(4);
if (panda_dev_sp->panda->can_send(addr, check_bmask(this->fullmsg.TxFlags, CAN_29BIT_ID),
(const uint8_t*)payload.c_str(), (uint8_t)payload.size(), panda::PANDA_CAN1) == FALSE) {
return;
}
this->txInFlight = TRUE;
this->sentyet = TRUE;
panda_dev_sp->txMsgsAwaitingEcho.push(shared_from_this());
}
}
}
//Returns TRUE if receipt is consumed by the msg, FALSE otherwise.
BOOL MessageTx_CAN::checkTxReceipt(J2534Frame frame) {
if (txReady()) return FALSE;
if (frame.Data == fullmsg.Data && ((this->fullmsg.TxFlags & CAN_29BIT_ID) == (frame.RxStatus & CAN_29BIT_ID))) {
txInFlight = FALSE;
if (auto conn_sp = std::static_pointer_cast<J2534Connection_CAN>(this->connection.lock()))
if (conn_sp->loopback)
conn_sp->addMsgToRxQueue(frame);
return TRUE;
}
return FALSE;
}
void MessageTx_CAN::reset() {
sentyet = FALSE;
txInFlight = FALSE;
}