libosmo-netif/examples/rs232-read.c

93 lines
2.0 KiB
C

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <osmocom/core/select.h>
#include <osmocom/core/talloc.h>
#include <osmocom/core/msgb.h>
#include <osmocom/core/logging.h>
#include <osmocom/core/application.h>
#include <osmocom/netif/rs232.h>
#define DRS232TEST 0
struct log_info_cat osmo_rs232_test_cat[] = {
[DRS232TEST] = {
.name = "DRS232TEST",
.description = "rs232 test",
.color = "\033[1;35m",
.enabled = 1, .loglevel = LOGL_DEBUG,
},
};
const struct log_info osmo_rs232_test_log_info = {
.filter_fn = NULL,
.cat = osmo_rs232_test_cat,
.num_cat = ARRAY_SIZE(osmo_rs232_test_cat),
};
static struct osmo_rs232 *r;
void sighandler(int foo)
{
LOGP(DRS232TEST, LOGL_NOTICE, "closing rs232.\n");
osmo_rs232_close(r);
osmo_rs232_destroy(r);
exit(EXIT_SUCCESS);
}
static int read_cb(struct osmo_rs232 *r)
{
struct msgb *msg;
LOGP(DRS232TEST, LOGL_DEBUG, "received data from rs232\n");
msg = msgb_alloc(1024, "rs232/test");
if (msg == NULL) {
LOGP(DRS232TEST, LOGL_ERROR, "cannot allocate message\n");
return 0;
}
if (osmo_rs232_read(r, msg) < 0) {
LOGP(DRS232TEST, LOGL_ERROR, "cannot read from rs232\n");
return 0;
}
LOGP(DRS232TEST, LOGL_DEBUG, "received %d bytes\n", msg->len);
printf("%s", msg->data);
msgb_free(msg);
return 0;
}
static void *tall_test;
int main(void)
{
tall_test = talloc_named_const(NULL, 1, "osmo_rs232_test");
msgb_talloc_ctx_init(tall_test, 0);
osmo_init_logging2(tall_test, &osmo_rs232_test_log_info);
log_set_log_level(osmo_stderr_target, LOGL_NOTICE);
r = osmo_rs232_create(tall_test);
if (r == NULL) {
LOGP(DRS232TEST, LOGL_ERROR, "cannot create rs232 object\n");
exit(EXIT_FAILURE);
}
osmo_rs232_set_serial_port(r, "/dev/ttyACM0");
osmo_rs232_set_baudrate(r, 9600);
osmo_rs232_set_read_cb(r, read_cb);
if (osmo_rs232_open(r) < 0) {
LOGP(DRS232TEST, LOGL_ERROR, "cannot open rs232\n");
exit(EXIT_FAILURE);
}
LOGP(DRS232TEST, LOGL_NOTICE, "Entering main loop\n");
while(1) {
osmo_select_main(0);
}
}