eive/eive-obsw
13
4
Fork 0
Code Issues 4 Pull Requests 1 Releases 121 Wiki Activity

crc for ploc update

Browse Source
This commit is contained in:
Jakob.Meier
2021-08-18 08:26:31 +02:00
parent be6056aadb
commit 124abf0213
4 changed files with 31 additions and 8 deletions
Download Patch File Download Diff File Expand all files Collapse all files

28
bsp_q7s/devices/PlocUpdater.cpp
View File

@ -292,7 +292,7 @@ void PlocUpdater::commandUpdateAvailable() {
remainingPackets = numOfUpdatePackets;
packetsSent = 0;
uint32_t imageCrc = makeCrc();
calcImageCrc();
PLOC_SPV::UpdateInfo packet(PLOC_SPV::APID_UPDATE_AVAILABLE, static_cast<uint8_t>(updateMemory),
static_cast<uint8_t>(updatePartition), imageSize, imageCrc, numOfUpdatePackets);
@ -338,7 +338,7 @@ void PlocUpdater::commandUpdatePacket() {
file.close();
// sequence count of first packet is 1
packet.setPacketSequenceCount((packetsSent + 1) & PLOC_SPV::SEQUENCE_COUNT_MASK);
if (numOfUpdatePackets > 0) {
if (numOfUpdatePackets > 1) {
adjustSequenceFlags(packet);
}
packet.makeCrc();
@ -383,9 +383,27 @@ void PlocUpdater::commandUpdateVerify() {
return;
}
ReturnValue_t PlocUpdater::makeCrc() {
//TODO: Waiting on input from TAS about the CRC to use
return 0;
void PlocUpdater::calcImageCrc() {
std::ifstream file(updateFile, std::ifstream::binary);
file.seekg(0, file.end);
uint32_t count;
uint32_t bit;
uint32_t remainder = INITIAL_REMAINDER_32;
char input;
for (count = 0; count < imageSize; count++) {
file.seekg(count, file.beg);
file.read(&input, 1);
remainder ^= (input << 16);
for (bit = 8; bit > 0; --bit) {
if (remainder & TOPBIT_32) {
remainder = (remainder << 1) ^ POLYNOMIAL_32;
} else {
remainder = (remainder << 1);
}
}
}
file.close();
imageCrc = (remainder ^ FINAL_XOR_VALUE_32);
}
void PlocUpdater::adjustSequenceFlags(PLOC_SPV::UpdatePacket& packet) {