1 files changed, 46 insertions, 0 deletions
diff --git a/meta-facebook/meta-wedge/recipes-wedge/rackmon/rackmon/modbus.h b/meta-facebook/meta-wedge/recipes-wedge/rackmon/rackmon/modbus.h
new file mode 100644
index 0000000..435d518
--- /dev/null
+++ b/meta-facebook/meta-wedge/recipes-wedge/rackmon/rackmon/modbus.h
@@ -0,0 +1,46 @@
+/*
+ * Copyright 2014-present Facebook. All Rights Reserved.
+ *
+ * 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., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#ifndef MODBUS_H_
+#define MODBUS_H_
+#include <stddef.h>
+#include <stdint.h>
+#include <stdio.h>
+uint16_t modbus_crc16(char* buffer, size_t length);
+
+#define DEFAULT_TTY "/dev/ttyS3"
+#define DEFAULT_GPIO 45
+
+#define CHECK(x) { if((x) < 0) { \
+    error = x;  \
+    goto cleanup; \
+} }
+
+void waitfd(int fd);
+void gpio_on(int fd);
+void gpio_off(int fd);
+void decode_hex_in_place(char* buf, size_t* len);
+void append_modbus_crc16(char* buf, size_t* len);
+void print_hex(FILE* f, char* buf, size_t len);
+
+// Read until maxlen bytes or no bytes in mdelay_us microseconds
+size_t read_wait(int fd, char* dst, size_t maxlen, int mdelay_us);
+
+extern int verbose;
+
+#endif