예제 #1
0
SR_PRIV void hung_chang_dso_2100_write_mbox(struct parport *port, uint8_t val)
{
	sr_dbg("mbox <= %X", val);
	ieee1284_write_control(port,
			C1284_NSTROBE | C1284_NINIT | C1284_NSELECTIN);
	ieee1284_data_dir(port, 0);
	ieee1284_write_data(port, val);
	ieee1284_write_control(port, C1284_NINIT | C1284_NSELECTIN);
	ieee1284_write_control(port,
			C1284_NSTROBE | C1284_NINIT | C1284_NSELECTIN);
	ieee1284_data_dir(port, 1);
	ieee1284_write_control(port,
		C1284_NSTROBE | C1284_NAUTOFD | C1284_NINIT | C1284_NSELECTIN);
}
예제 #2
0
파일: api.c 프로젝트: abraxa/libsigrok 
static int dev_open(struct sr_dev_inst *sdi)
{
	struct dev_context *devc = sdi->priv;
	int i;

	if (ieee1284_open(sdi->conn, 0, &i) != E1284_OK)
		goto fail1;

	if (ieee1284_claim(sdi->conn) != E1284_OK)
		goto fail2;

	if (ieee1284_data_dir(sdi->conn, 1) != E1284_OK)
		goto fail3;

	if (hung_chang_dso_2100_move_to(sdi, 1))
		goto fail3;

	devc->samples = g_try_malloc(1000 * sizeof(*devc->samples));
	if (!devc->samples)
		goto fail3;

	return SR_OK;

fail3:
	hung_chang_dso_2100_reset_port(sdi->conn);
	ieee1284_release(sdi->conn);
fail2:
	ieee1284_close(sdi->conn);
fail1:
	return SR_ERR;
}
예제 #3
0
SR_PRIV gboolean hung_chang_dso_2100_check_id(struct parport *port)
{
	gboolean ret = FALSE;

	if (ieee1284_data_dir(port, 1) != E1284_OK)
		goto fail;

	ieee1284_write_control(port, C1284_NSTROBE | C1284_NAUTOFD | C1284_NSELECTIN);
	ieee1284_write_control(port, C1284_NAUTOFD | C1284_NSELECTIN);

	if (ieee1284_read_data(port) != 0x55)
		goto fail;

	ret = TRUE;
fail:
	hung_chang_dso_2100_reset_port(port);

	return ret;
}
예제 #4
0
SR_PRIV void hung_chang_dso_2100_reset_port(struct parport *port)
{
	ieee1284_write_control(port,
			C1284_NSTROBE | C1284_NAUTOFD | C1284_NSELECTIN);
	ieee1284_data_dir(port, 0);
}