--- /dev/null
+/*
+ * Copyright (c) 2008 Johns Hopkins University.
+ * All rights reserved.
+ *
+ * Permission to use, copy, modify, and distribute this software and its
+ * documentation for any purpose, without fee, and without written
+ * agreement is hereby granted, provided that the above copyright
+ * notice, the (updated) modification history and the author appear in
+ * all copies of this source code.
+ *
+ * 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 HOLDERS OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, LOSS OF USE, DATA,
+ * OR PROFITS) 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.
+*/
+
+/**
+ * SerialLoader receives loadable programs from the serial port and stores
+ * it in a byte array. Then, when it receives the command to load the code,
+ * it makes the call to the dynamic loader.
+ *
+ * @author Chieh-Jan Mike Liang <cliang4@cs.jhu.edu>
+ * @author Jeongyeup Paek <jpaek@enl.usc.edu>
+ **/
+
+#include "SerialLoader.h"
+
+module SerialLoaderP
+{
+ uses {
+ interface Boot;
+ interface SplitControl as SerialSplitControl;
+ interface AMSend as SerialAMSender;
+ interface Receive as SerialAMReceiver;
+ interface Leds;
+ interface DynamicLoader;
+ interface BigCrc;
+ }
+}
+implementation
+{
+ message_t serialMsg;
+ uint32_t dumpAddr = 0;
+
+ uint8_t image[MAX_BIN_SIZE];
+
+ event void Boot.booted()
+ {
+ call SerialSplitControl.start();
+ }
+
+ event void SerialSplitControl.startDone(error_t error)
+ {
+ if (error != SUCCESS) {
+ call SerialSplitControl.start();
+ }
+ }
+
+ event void SerialSplitControl.stopDone(error_t error) {}
+
+ void sendReply(error_t error, uint8_t len)
+ {
+ SerialReplyPacket *srpkt = (SerialReplyPacket *)call SerialAMSender.getPayload(&serialMsg, sizeof(SerialReplyPacket));
+ if (error == SUCCESS) {
+ srpkt->error = SERIALMSG_SUCCESS;
+ } else {
+ srpkt->error = SERIALMSG_FAIL;
+ }
+ call SerialAMSender.send(AM_BROADCAST_ADDR, &serialMsg, len);
+ }
+
+
+ event void SerialAMSender.sendDone(message_t* msg, error_t error) {}
+
+ error_t write_image(uint16_t offset, void *data, uint16_t len) {
+ if ((offset + len > MAX_BIN_SIZE) || (data == NULL))
+ return FAIL;
+ memcpy(&image[offset], data, len);
+ return SUCCESS;
+ }
+
+ error_t read_image(uint16_t offset, void *readbuf, uint16_t len) {
+ if ((offset + len > MAX_BIN_SIZE) || (readbuf == NULL))
+ return FAIL;
+ memcpy(readbuf, &image[offset], len);
+ return SUCCESS;
+ }
+
+ event void DynamicLoader.loadFromFlashDone(uint8_t volumeId, tosthread_t id, error_t error) {}
+ event void DynamicLoader.loadFromMemoryDone(void *addr, tosthread_t id, error_t error) {
+ sendReply(error, sizeof(SerialReplyPacket));
+ }
+
+ event void BigCrc.computeCrcDone(void* buf, uint16_t len, uint16_t crc, error_t error)
+ {
+ SerialReplyPacket *srpkt = (SerialReplyPacket *)call SerialAMSender.getPayload(&serialMsg, sizeof(SerialReplyPacket));
+
+ srpkt->data[1] = crc & 0xFF;
+ srpkt->data[0] = (crc >> 8) & 0xFF;
+ sendReply(SUCCESS, 2 + sizeof(SerialReplyPacket));
+ }
+
+ void sendCrcReply(uint16_t offset, uint16_t len)
+ {
+ call BigCrc.computeCrc(&(image[offset]), len);
+ }
+
+
+ event message_t* SerialAMReceiver.receive(message_t* msg, void* payload, uint8_t len)
+ {
+ uint16_t i;
+ error_t error = FAIL;
+ SerialReqPacket *srpkt = (SerialReqPacket *)payload;
+ SerialReplyPacket *serialMsg_payload = (SerialReplyPacket *)call SerialAMSender.getPayload(&serialMsg, sizeof(SerialReplyPacket));
+
+ switch (srpkt->msg_type) {
+ case SERIALMSG_ERASE :
+ for (i = 0; i < MAX_BIN_SIZE; i++) { image[i] = 0; }
+ call Leds.set(7);
+ for (i = 0; i < 2000; i++) {}
+ call Leds.set(0);
+ sendReply(SUCCESS, sizeof(SerialReplyPacket));
+ break;
+ case SERIALMSG_RUN :
+ error = call DynamicLoader.loadFromMemory(image);
+ if (error != SUCCESS)
+ sendReply(error, sizeof(SerialReplyPacket));
+ break;
+ case SERIALMSG_WRITE :
+ error = write_image(srpkt->offset, srpkt->data, srpkt->len);
+ if (error != SUCCESS)
+ call Leds.led0On();
+ sendReply(error, sizeof(SerialReplyPacket));
+ break;
+ case SERIALMSG_READ :
+ error = read_image(srpkt->offset, serialMsg_payload->data, srpkt->len);
+ if (error != SUCCESS)
+ sendReply(error, sizeof(SerialReplyPacket));
+ else
+ sendReply(error, len + sizeof(SerialReplyPacket));
+ break;
+ case SERIALMSG_LEDS:
+ call Leds.set(7);
+ for (i = 0; i < 2000; i++) {}
+ call Leds.set(0);
+ break;
+ case SERIALMSG_CRC :
+ sendCrcReply(srpkt->offset, srpkt->len);
+ break;
+ }
+
+ return msg;
+ }
+}
+