void HIDBridge_::read(void)
{
// check for read timeout only if really needed
if (!nhp_read.mode){
if (millis() - readTimeout > HIDBRIDGE_RX_TIMEOUT) {
// reset reportID and NHP if we have a timeout
reportID = 0;
nhp_read.mode = NHP_RESET;
err(HIDBRIDGE_ERR_READ_TO);
}
}
// read as long as the Serial is available
// but do not block forever
rx_buffer_index_t i;
for (i = 0; i < SERIAL_RX_BUFFER_SIZE; i++){
// read in new Serial byte
int b = HIDBRIDGE_SERIAL.read();
if (b < 0)
break;
// process with NHP protocol
if (readNHP(b, &nhp_read)) {
// command indicates a new hidReport (command==reportID) or the end (command==0)
if (nhp_read.mode == NHP_COMMAND)
proceedCommand();
// NHP address contains control data or hid in/out report data
else if (nhp_read.mode == NHP_ADDRESS)
proceedAddress();
}
// NHP reading error
else if (nhp_read.errorLevel) {
// ASCII
if (b < 128) {
// possible main mcu reset
if (!b)
err(HIDBRIDGE_ERR_MCU_RST);
else { //TODO different errors?
err(HIDBRIDGE_ERR_SERIALB);
}
}
else
err(HIDBRIDGE_ERR_SERIALB);
// do not change rxReady state because of a possible full buffer
// which causes NHP corruption
err(HIDBRIDGE_ERR_NHP_ERR);
}
} // end of for reading loop
// save new time
if (i)
readTimeout = millis();
}
int main(int argc, char **argv) {
signal(SIGINT, handler);
while (1) {
std::string args;
args = readline();
if (args.length() < 1) break;
std::deque<std::string> tokens;
tokens = split(args, '|', tokens);
pids.resize(tokens.size());
std::deque<int *> ffd(tokens.size(), new int[2]);
for (int i = 0; i < tokens.size() - 1; ++i) {
pipe(ffd[i]);
}
for (int i = 0; i < tokens.size(); ++i) {
int id;
if ((id = fork()) > 0) {
pids[i] = id;
} else {
if (i != 0) {
//dup2(ffd[i - 1][1], ffd[i][0]);
dup2(ffd[i - 1][1], STDIN_FILENO);
close(ffd[i - 1][0]);
}
if (i != tokens.size() - 1) {
dup2(ffd[i][1], STDOUT_FILENO);
}
proceedCommand(tokens[i]);
close(ffd[i][1]);
close(ffd[i][0]);
}
if (id < 0) return 0;
}
for (int i = 0, j; i < tokens.size(); ++i) {
waitpid(pids[i], &j, 0);
}
for (int i = 0; i < tokens.size() - 1; ++i) {
close(ffd[i][0]);
close(ffd[i][1]);
}
pids.clear();
}
}
