empathicqubit/ticables-gdb-bridge
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Auto acknowledge packets from client

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Empathic Qubit 2022-12-25 03:30:58 +01:00
parent 6fdadc45b6
commit 52e3f1630d
2 changed files with 36 additions and 16 deletions
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3
.vscode/settings.json vendored
View file

@ -5,5 +5,6 @@
"ticables.h": "c", "ticables.h": "c",
"vector": "c", "vector": "c",
"random": "c" "random": "c"
} },
"cmake.configureOnOpen": true
} }

49
main.c
View file

@ -54,12 +54,19 @@ void retry_send(unsigned char* send, int sendCount) {
} }
} }
void ack() {
retry_send("+", 1);
}
void nack() {
retry_send("-", 1);
}
void retry_recv(unsigned char* recv, int recvCount) { void retry_recv(unsigned char* recv, int recvCount) {
log(LEVEL_DEBUG, "RECEIVED %d BYTES\n", recvCount); log(LEVEL_DEBUG, "RECEIVED %d BYTES\n", recvCount);
log(LEVEL_TRACE, "%.*s\n", recvCount, recv) log(LEVEL_TRACE, "%.*s\n", recvCount, recv)
for(int c = 0; c < recvCount; c++) { int c = 0;
putchar(recv[c]); while((c += fwrite(&recv[c], 1, recvCount - c, stdout)) < recvCount);
}
fflush(stdout); fflush(stdout);
} }
@ -128,13 +135,13 @@ int main(void) {
log(LEVEL_INFO, "INFO: Family %d, Variant %d\n", info.family, info.variant); log(LEVEL_INFO, "INFO: Family %d, Variant %d\n", info.family, info.variant);
// FIXME Option to ignore first command or not bool handle_acks = true;
bool handled_first_recv = false; bool handled_first_recv = false;
while(true) { while(true) {
unsigned char recv[255]; unsigned char recv[1023];
unsigned char current = 0; unsigned char current = 0;
unsigned char recvCount = 0; int recvCount = 0;
int c; int c;
log(LEVEL_DEBUG, "RECEIVE PHASE\n"); log(LEVEL_DEBUG, "RECEIVE PHASE\n");
@ -153,15 +160,33 @@ int main(void) {
} }
} while(err); } while(err);
recvCount += 2; recvCount += 2;
if(handled_first_recv) {
if(!handle_acks || handled_first_recv) {
retry_recv(recv, recvCount); retry_recv(recv, recvCount);
} }
else {
log(LEVEL_DEBUG, "Discarded the first packet\n");
}
if(handle_acks) {
log(LEVEL_DEBUG, "Injecting an ACK\n");
ack();
handled_first_recv = true;
recvCount = 0;
continue;
}
recvCount = 0; recvCount = 0;
break; break;
} }
else if(recvCount == 1) { else if(recvCount == 1) {
if(current == '-') { if(current == '-') {
retry_recv(recv, recvCount); if(!handle_acks) {
retry_recv(recv, recvCount);
}
else {
log(LEVEL_DEBUG, "Discarding a NACK\n");
}
recvCount = 0; recvCount = 0;
break; break;
} }
@ -171,19 +196,13 @@ int main(void) {
} }
} }
if(!handled_first_recv) {
handled_first_recv = true;
retry_send("+", 1);
continue;
}
fd_set set; fd_set set;
FD_ZERO(&set); FD_ZERO(&set);
FD_SET(0, &set); FD_SET(0, &set);
struct timeval timeout = { 1, 0 }; struct timeval timeout = { 1, 0 };
log(LEVEL_DEBUG, "SEND PHASE\n"); log(LEVEL_DEBUG, "SEND PHASE\n");
while(select(1, &set, NULL, NULL, &timeout)) { while(true) {
unsigned char send[255]; unsigned char send[255];
int sendCount = 0; int sendCount = 0;