1 files changed, 137 insertions, 0 deletions
diff --git a/cctools/lib/ccdbg-io.c b/cctools/lib/ccdbg-io.c
new file mode 100644
index 00000000..9c6693cd
--- /dev/null
+++ b/cctools/lib/ccdbg-io.c
@@ -0,0 +1,137 @@
+/*
+ * Copyright © 2008 Keith Packard <keithp@keithp.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ */
+
+#include "ccdbg.h"
+#include <time.h>
+#include "cc-usb.h"
+#include "cc-bitbang.h"
+
+struct ccdbg *
+ccdbg_open(void)
+{
+	struct ccdbg *dbg;
+	char *tty;
+
+	dbg = calloc(sizeof (struct ccdbg), 1);
+	if (!dbg) {
+		perror("calloc");
+		return NULL;
+	}
+	tty = getenv("CCDBG_TTY");
+	if (!tty || tty[0] == '/')
+		dbg->usb = cc_usb_open(tty);
+	if (!dbg->usb) {
+		dbg->bb = cc_bitbang_open();
+		if (!dbg->bb) {
+			free(dbg);
+			return NULL;
+		}
+	}
+	return dbg;
+}
+
+void
+ccdbg_close(struct ccdbg *dbg)
+{
+	if (dbg->usb)
+		cc_usb_close(dbg->usb);
+	if (dbg->bb)
+		cc_bitbang_close(dbg->bb);
+	free (dbg);
+}
+
+void
+ccdbg_debug_mode(struct ccdbg *dbg)
+{
+	if (dbg->usb)
+		cc_usb_debug_mode(dbg->usb);
+	else if (dbg->bb)
+		cc_bitbang_debug_mode(dbg->bb);
+}
+
+void
+ccdbg_reset(struct ccdbg *dbg)
+{
+	if (dbg->usb)
+		cc_usb_reset(dbg->usb);
+	else if (dbg->bb)
+		cc_bitbang_reset(dbg->bb);
+}
+
+void
+ccdbg_send_bytes(struct ccdbg *dbg, uint8_t *bytes, int nbytes)
+{
+	if (dbg->usb)
+		cc_usb_send_bytes(dbg->usb, bytes, nbytes);
+	else if (dbg->bb)
+		cc_bitbang_send_bytes(dbg->bb, bytes, nbytes);
+}
+
+void
+ccdbg_recv_bytes(struct ccdbg *dbg, uint8_t *bytes, int nbytes)
+{
+	if (dbg->usb)
+		cc_usb_recv_bytes(dbg->usb, bytes, nbytes);
+	else if (dbg->bb)
+		cc_bitbang_recv_bytes(dbg->bb, bytes, nbytes);
+}
+
+void
+ccdbg_sync(struct ccdbg *dbg)
+{
+	if (dbg->usb)
+		cc_usb_sync(dbg->usb);
+	else if (dbg->bb)
+		cc_bitbang_sync(dbg->bb);
+}
+
+void
+ccdbg_cmd_write(struct ccdbg *dbg, uint8_t cmd, uint8_t *data, int len)
+{
+	ccdbg_send_bytes(dbg, &cmd, 1);
+	ccdbg_send_bytes(dbg, data, len);
+}
+
+uint8_t
+ccdbg_cmd_write_read8(struct ccdbg *dbg, uint8_t cmd, uint8_t *data, int len)
+{
+	uint8_t	byte[1];
+	ccdbg_cmd_write(dbg, cmd, data, len);
+	ccdbg_recv_bytes(dbg, byte, 1);
+	ccdbg_sync(dbg);
+	return byte[0];
+}
+
+uint16_t
+ccdbg_cmd_write_read16(struct ccdbg *dbg, uint8_t cmd, uint8_t *data, int len)
+{
+	uint8_t	byte[2];
+	ccdbg_cmd_write(dbg, cmd, data, len);
+	ccdbg_recv_bytes(dbg, byte, 2);
+	ccdbg_sync(dbg);
+	return (byte[0] << 8) | byte[1];
+}
+
+void
+ccdbg_cmd_write_queue8(struct ccdbg *dbg, uint8_t cmd,
+		       uint8_t *data, int len,
+		       uint8_t *reply)
+{
+	ccdbg_cmd_write(dbg, cmd, data, len);
+	ccdbg_recv_bytes(dbg, reply, 1);
+}