Rename otPlatSerial* to otPlatUart*. (#253)

src/cli/cli_uart.cpp

@@ -0,0 +1,210 @@
+/*
+ *  Copyright (c) 2016, Nest Labs, Inc.
+ *  All rights reserved.
+ *
+ *  Redistribution and use in source and binary forms, with or without
+ *  modification, are permitted provided that the following conditions are met:
+ *  1. Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *  2. 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.
+ *  3. Neither the name of the copyright holder 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.
+ */
+
+/**
+ * @file
+ *   This file implements the CLI server on the UART service.
+ */
+
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <cli/cli.hpp>
+#include <cli/cli-uart.h>
+#include <cli/cli_uart.hpp>
+#include <common/code_utils.hpp>
+#include <common/encoding.hpp>
+#include <common/new.hpp>
+#include <common/tasklet.hpp>
+#include <platform/uart.h>
+
+namespace Thread {
+namespace Cli {
+
+static const char sCommandPrompt[] = {'>', ' '};
+static const char sEraseString[] = {'\b', ' ', '\b'};
+static const char CRNL[] = {'\r', '\n'};
+static Uart *sServer;
+
+static otDEFINE_ALIGNED_VAR(sCliUartRaw, sizeof(Uart), uint64_t);
+
+extern "C" void otCliUartInit(void)
+{
+    sServer = new(&sCliUartRaw) Uart;
+}
+
+Uart::Uart(void)
+{
+    mRxLength = 0;
+    mTxHead = 0;
+    mTxLength = 0;
+    mSendLength = 0;
+}
+
+extern "C" void otPlatUartReceived(const uint8_t *aBuf, uint16_t aBufLength)
+{
+    sServer->ReceiveTask(aBuf, aBufLength);
+}
+
+void Uart::ReceiveTask(const uint8_t *aBuf, uint16_t aBufLength)
+{
+    const uint8_t *end;
+
+    end = aBuf + aBufLength;
+
+    for (; aBuf < end; aBuf++)
+    {
+        switch (*aBuf)
+        {
+        case '\r':
+        case '\n':
+            Output(CRNL, sizeof(CRNL));
+
+            if (mRxLength > 0)
+            {
+                mRxBuffer[mRxLength] = '\0';
+                ProcessCommand();
+            }
+
+            Output(sCommandPrompt, sizeof(sCommandPrompt));
+
+            break;
+
+        case '\b':
+        case 127:
+            if (mRxLength > 0)
+            {
+                Output(sEraseString, sizeof(sEraseString));
+                mRxBuffer[--mRxLength] = '\0';
+            }
+
+            break;
+
+        default:
+            Output(reinterpret_cast<const char *>(aBuf), 1);
+            mRxBuffer[mRxLength++] = *aBuf;
+            break;
+        }
+    }
+}
+
+ThreadError Uart::ProcessCommand(void)
+{
+    ThreadError error = kThreadError_None;
+
+    if (mRxBuffer[mRxLength - 1] == '\n')
+    {
+        mRxBuffer[--mRxLength] = '\0';
+    }
+
+    if (mRxBuffer[mRxLength - 1] == '\r')
+    {
+        mRxBuffer[--mRxLength] = '\0';
+    }
+
+    Interpreter::ProcessLine(mRxBuffer, mRxLength, *this);
+
+    mRxLength = 0;
+
+    return error;
+}
+
+int Uart::Output(const char *aBuf, uint16_t aBufLength)
+{
+    uint16_t remaining = kTxBufferSize - mTxLength;
+    uint16_t tail;
+
+    if (aBufLength > remaining)
+    {
+        aBufLength = remaining;
+    }
+
+    for (int i = 0; i < aBufLength; i++)
+    {
+        tail = (mTxHead + mTxLength) % kTxBufferSize;
+        mTxBuffer[tail] = *aBuf++;
+        mTxLength++;
+    }
+
+    Send();
+
+    return aBufLength;
+}
+
+int Uart::OutputFormat(const char *fmt, ...)
+{
+    char buf[kMaxLineLength];
+    va_list ap;
+
+    va_start(ap, fmt);
+    vsnprintf(buf, sizeof(buf), fmt, ap);
+    va_end(ap);
+
+    return Output(buf, strlen(buf));
+}
+
+void Uart::Send(void)
+{
+    VerifyOrExit(mSendLength == 0, ;);
+
+    if (mTxLength > kTxBufferSize - mTxHead)
+    {
+        mSendLength = kTxBufferSize - mTxHead;
+    }
+    else
+    {
+        mSendLength = mTxLength;
+    }
+
+    if (mSendLength > 0)
+    {
+        otPlatUartSend(reinterpret_cast<uint8_t *>(mTxBuffer + mTxHead), mSendLength);
+    }
+
+exit:
+    return;
+}
+
+extern "C" void otPlatUartSendDone(void)
+{
+    sServer->SendDoneTask();
+}
+
+void Uart::SendDoneTask(void)
+{
+    mTxHead = (mTxHead + mSendLength) % kTxBufferSize;
+    mTxLength -= mSendLength;
+    mSendLength = 0;
+
+    Send();
+}
+
+}  // namespace Cli
+}  // namespace Thread