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serial2tcp.c json error handling, respect rx.ready

This commit is contained in:
Michael Betz 2020-10-04 18:17:28 -07:00
parent b84a858b2c
commit 6e3e979a0b
1 changed files with 30 additions and 7 deletions
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37
litex/build/sim/core/modules/serial2tcp/serial2tcp.c
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@ -35,6 +35,18 @@ int litex_sim_module_get_args( char *args, char *arg, char **val)
char *value = NULL;
int r;
if(!arg) {
fprintf(stderr, "litex_sim_module_get_args(): `arg` (requested .json key) is NULL!\n");
ret=RC_JSERROR;
goto out;
}
if(!args) {
fprintf(stderr, "missing key in .json file: %s\n", arg);
ret=RC_JSERROR;
goto out;
}
jsobj = json_tokener_parse(args);
if(NULL==jsobj) {
fprintf(stderr, "Error parsing json arg: %s \n", args);
@ -97,10 +109,19 @@ void read_handler(int fd, short event, void *arg)
struct session_s *s = (struct session_s*)arg;
char buffer[1024];
ssize_t read_len;
int i;
int i, ret;
read_len = read(fd, buffer, 1024);
if (read_len == 0) {
// Received EOF, remote has closed the connection
ret = event_del(s->ev);
if (ret != 0) {
eprintf("read_handler(): Error removing event %d!\n", event);
return;
}
event_free(s->ev);
s->ev = NULL;
}
for(i = 0; i < read_len; i++)
{
s->databuf[(s->data_start + s->datalen ) % 2048] = buffer[i];
@ -128,7 +149,7 @@ static void
accept_error_cb(struct evconnlistener *listener, void *ctx)
{
struct event_base *base = evconnlistener_get_base(listener);
eprintf("ERRROR\n");
eprintf("ERROR\n");
event_base_loopexit(base, NULL);
}
@ -146,7 +167,6 @@ static int serial2tcp_new(void **sess, char *args)
ret = RC_INVARG;
goto out;
}
ret = litex_sim_module_get_args(args, "port", &cport);
if(RC_OK != ret)
goto out;
@ -233,10 +253,13 @@ static int serial2tcp_tick(void *sess, uint64_t time_ps)
*s->rx_valid=0;
if(s->datalen) {
*s->rx=s->databuf[s->data_start];
s->data_start = (s->data_start + 1) % 2048;
s->datalen--;
c = s->databuf[s->data_start];
*s->rx = c;
*s->rx_valid=1;
if (*s->rx_ready) {
s->data_start = (s->data_start + 1) % 2048;
s->datalen--;
}
}
out: