From 79559c5041835ce6835a35265a97e291789ec0b0 Mon Sep 17 00:00:00 2001
From: Paul Selkirk <paul@psgd.org>
Date: Wed, 16 Mar 2016 10:15:47 -0400
Subject: Added serial RPC transport and lots more...

Added RPC function to get server version number.
Substantially reworked GNUMakefile with conditionals.
Renamed rpc_*() and xdr_*() to hal_*() for consistency.
Moved hal_io_fmc.c from stm32 repo.
---
 rpc_server_serial.c | 79 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 79 insertions(+)
 create mode 100644 rpc_server_serial.c

(limited to 'rpc_server_serial.c')

diff --git a/rpc_server_serial.c b/rpc_server_serial.c
new file mode 100644
index 0000000..d896700
--- /dev/null
+++ b/rpc_server_serial.c
@@ -0,0 +1,79 @@
+/*
+ * rpc_server_serial.c
+ * -------------------
+ * Remote procedure call transport over serial line with SLIP framing.
+ *
+ * Copyright (c) 2016, NORDUnet A/S All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ * - Redistributions of source code must retain the above copyright notice,
+ *   this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ *
+ * - Neither the name of the NORDUnet nor the names of its contributors may
+ *   be used to endorse or promote products derived from this software
+ *   without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
+ * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "hal.h"
+#include "hal_internal.h"
+#include "slip_internal.h"
+
+/* Don't include stm-uart.h to avoid conflicting definitions of HAL_OK.
+ */
+extern int uart_send_char(uint8_t ch);
+extern int uart_recv_char(uint8_t *cp);
+
+hal_error_t hal_rpc_server_transport_init(void)
+{
+    return HAL_OK;
+}
+
+hal_error_t hal_rpc_server_transport_close(void)
+{
+    return HAL_OK;
+}
+
+hal_error_t hal_rpc_sendto(const uint8_t * const buf, const size_t len, void *opaque)
+{
+    if (hal_slip_send(buf, len) == -1)
+        return HAL_ERROR_RPC_TRANSPORT;
+    return HAL_OK; 
+}
+
+hal_error_t hal_rpc_recvfrom(uint8_t * const buf, size_t * const len, void **opaque)
+{
+    int ret;
+    
+    if ((ret = hal_slip_recv(buf, *len)) == -1)
+        return HAL_ERROR_RPC_TRANSPORT;
+    *len = ret;
+    return HAL_OK;
+}
+
+int hal_slip_send_char(uint8_t c)
+{
+    return (uart_send_char(c) == 0) ? 0 : -1;
+}
+
+int hal_slip_recv_char(uint8_t *c)
+{
+    return (uart_recv_char(c) == 0) ? 0 : -1;
+}
-- 
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