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Add FCS comments and text2pcap dump routines of Roger Larsson.
Don't send last two byte to xmit buffer since they will be overwritten by the checksum anyway.
This commit is contained in:
dak664
parent
7b7ad4336e
commit
e3e1e04948
@ -530,7 +530,6 @@ void
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//hal_frame_read(hal_rx_frame_t *rx_frame, rx_callback_t rx_callback)
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hal_frame_read(hal_rx_frame_t *rx_frame)
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{
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// uint8_t *rx_data=0;
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uint8_t *rx_data;
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/* check that we have either valid frame pointer or callback pointer */
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@ -542,7 +541,7 @@ hal_frame_read(hal_rx_frame_t *rx_frame)
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/*Send frame read command.*/
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(void)HAL_SPI_TRANSFER(HAL_TRX_CMD_FR);
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/*Read frame length.*/
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/*Read frame length. This includes the checksum. */
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uint8_t frame_length = HAL_SPI_TRANSFER(0);
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/*Check for correct frame length.*/
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@ -623,9 +622,11 @@ hal_frame_write(uint8_t *write_buffer, uint8_t length)
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dummy_read = HAL_SPI_TRANSFER(length);
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/* Download to the Frame Buffer. */
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/* Note an autogenerated FCS is inserted into the last two bytes, so there is no
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* need to transfer them to the buffer */
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do{
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dummy_read = HAL_SPI_TRANSFER(*write_buffer++);
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} while (--length > 0);
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} while (--length > 2);
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HAL_SPI_TRANSFER_CLOSE();
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}
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@ -794,7 +795,6 @@ HAL_RF230_ISR()
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#endif
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if (rf230_last_rssi >= RF230_MIN_RX_POWER) {
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#endif
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// hal_frame_read(&rxframe, NULL);
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hal_frame_read(&rxframe);
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rf230_interrupt();
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// trx_end_callback(isr_timestamp);
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@ -28,7 +28,7 @@
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*
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* This file is part of the Contiki operating system.
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*
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* @(#)$Id: rf230bb.c,v 1.22 2010/12/18 20:49:00 dak664 Exp $
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* @(#)$Id: rf230bb.c,v 1.23 2010/12/21 04:25:15 dak664 Exp $
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*/
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/*
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* This code is almost device independent and should be easy to port.
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@ -61,13 +61,14 @@
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#define WITH_SEND_CCA 0
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/* Timestamps have not been tested */
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#if RF230_CONF_TIMESTAMPS
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#include "net/rime/timesynch.h"
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#define TIMESTAMP_LEN 3
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#else /* RF230_CONF_TIMESTAMPS */
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#define TIMESTAMP_LEN 0
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#endif /* RF230_CONF_TIMESTAMPS */
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//#define FOOTER_LEN 2
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/* Nonzero FOOTER_LEN has not been tested */
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#define FOOTER_LEN 0
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#ifndef RF230_CONF_CHECKSUM
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@ -92,7 +93,11 @@ static bool is_promiscuous;
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#endif /* RF230_CONF_CHECKSUM */
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#define CHECKSUM_LEN 2
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/* Note the AUC_LEN is equal to the CHECKSUM_LEN in any tested configurations to date! */
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#define AUX_LEN (CHECKSUM_LEN + TIMESTAMP_LEN + FOOTER_LEN)
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#if AUX_LEN != CHECKSUM_LEN
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#warning RF230 Untested Configuration!
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#endif
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struct timestamp {
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uint16_t time;
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@ -112,11 +117,20 @@ struct timestamp {
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#define DEBUG 0
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#if DEBUG
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#define PRINTF(...) //printf(__VA_ARGS__)
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#define PRINTSHORT(...) printf(__VA_ARGS__)
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#define PRINTF(FORMAT,args...) printf_P(PSTR(FORMAT),##args)
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#define PRINTSHORT(FORMAT,args...) printf_P(PSTR(FORMAT),##args)
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#else
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#define PRINTF(...)
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#define PRINTSHORT(...) //printf(__VA_ARGS__)
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#define PRINTSHORT(...)
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#endif
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#if DEBUG>1
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/* Output format is suitable for text2pcap to convert to wireshark pcap file.
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* Use $text2pcap -e 0x809a (these_outputs) capture.pcap
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* Since the hardware calculates and appends the two byte checksum to Tx packets,
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* we just add two zero bytes to the packet dump. Don't forget to enable wireshark
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* 802.15.4 dissection even when the checksum is wrong!
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*/
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//int wireshark_offset;
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#endif
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/* See clock.c and httpd-cgi.c for RADIOSTATS code */
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@ -643,6 +657,19 @@ rf230_transmit(unsigned short payload_len)
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hal_set_slptr_low();
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hal_frame_write(buffer, total_len);
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PRINTF("rf230_transmit:\n");
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#if DEBUG>1
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/* Note the dumped packet will have a zero checksum since we don't know what it should be */
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{
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uint8_t i;
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PRINTF("0000"); //Start a new wireshark packet
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// PRINTF("%02x%02x ", wireshark_offset>>8, wireshark_offset & 0xff);
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for (i=0;i<total_len-CHECKSUM_LEN;i++) PRINTF(" %02x",buffer[i]);
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PRINTF(" 00 00\n"); //Checksum
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// wireshark_offset += total_len;
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}
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#endif
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if(RF230_receive_on) {
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ENERGEST_OFF(ENERGEST_TYPE_LISTEN);
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}
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@ -870,7 +897,7 @@ void
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rf230_set_channel(uint8_t c)
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{
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/* Wait for any transmission to end. */
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// PRINTF("rf230: Set Channel %u\n",c);
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PRINTF("rf230: Set Channel %u\n",c);
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rf230_waitidle();
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channel=c;
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hal_subregister_write(SR_CHANNEL, c);
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@ -1021,9 +1048,11 @@ PROCESS_THREAD(rf230_process, ev, data)
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PROCESS_END();
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}
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// Get packet from Radio if any, else return zero.
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// At present the last frame is buffered in the interrupt routine so it does
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// not access the hardware or change its status
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/* Get packet from Radio if any, else return zero.
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* The two-byte checksum is appended but the returned length does not include it.
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* At present the last frame is buffered in the interrupt routine so this routine
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* does not access the hardware or change its status
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*/
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/*---------------------------------------------------------------------------*/
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static int
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rf230_read(void *buf, unsigned short bufsize)
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@ -1038,8 +1067,8 @@ rf230_read(void *buf, unsigned short bufsize)
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#if RF230_CONF_TIMESTAMPS
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struct timestamp t;
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#endif /* RF230_CONF_TIMESTAMPS */
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len=rxframe.length;
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/* The length includes the twp-byte checksum but not the LQI byte */
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len=rxframe.length;
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if (len==0) {
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#if RADIOALWAYSON && DEBUGFLOWSIZE
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if (RF230_receive_on==0) {if (debugflow[debugflowsize-1]!='z') DEBUGFLOW('z');} //cxmac calls with radio off?
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@ -1051,12 +1080,6 @@ rf230_read(void *buf, unsigned short bufsize)
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if (RF230_receive_on) {
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#endif
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// PRINTSHORT("r%d",rxframe.length);
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PRINTF("rf230_read: %u bytes lqi %u crc %u\n",rxframe.length,rxframe.lqi,rxframe.crc);
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#if DEBUG>1
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for (len=0;len<rxframe.length;len++) PRINTF(" %x",rxframe.data[len]);PRINTF("\n");
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#endif
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#if RF230_CONF_TIMESTAMPS
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if(interrupt_time_set) {
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rf230_time_of_arrival = interrupt_time;
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@ -1066,6 +1089,20 @@ if (RF230_receive_on) {
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}
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rf230_time_of_departure = 0;
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#endif /* RF230_CONF_TIMESTAMPS */
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// PRINTSHORT("r%d",rxframe.length);
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PRINTF("rf230_read: %u bytes lqi %u crc %u\n",rxframe.length,rxframe.lqi,rxframe.crc);
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#if DEBUG>1
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{
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uint8_t i;
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PRINTF("0000");
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// PRINTF("%02x%02x ", wireshark_offset>>8, wireshark_offset & 0xff);
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for (i=0;i<rxframe.length;i++) PRINTF(" %02x",rxframe.data[i]);
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// wireshark_offset += rxframe.length;
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PRINTF("\n");
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}
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#endif
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// GET_LOCK();
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//if(len > RF230_MAX_PACKET_LEN) {
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@ -1095,13 +1132,14 @@ if (RF230_receive_on) {
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// RELEASE_LOCK();
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return 0;
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}
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/* Transfer the frame, stripping the footer */
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/* Transfer the frame, stripping the footer, but copying the checksum */
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framep=&(rxframe.data[0]);
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memcpy(buf,framep,len-AUX_LEN+CHECKSUM_LEN);
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framep+=len-AUX_LEN;
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/* Clear the length field to allow buffering of the next packet */
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rxframe.length=0;
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/* Point to the checksum */
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framep+=len-AUX_LEN;
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#if RF230_CONF_CHECKSUM
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memcpy(&checksum,framep,CHECKSUM_LEN);
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#endif /* RF230_CONF_CHECKSUM */
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@ -1161,25 +1199,11 @@ if (RF230_receive_on) {
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}
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#endif
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/* Clean up in case of FIFO overflow! This happens for every full
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* length frame and is signaled by FIFOP = 1 and FIFO = 0.
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*/
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// if(FIFOP_IS_1 && !FIFO_IS_1) {
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/* printf("rf230_read: FIFOP_IS_1 1\n");*/
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// flushrx();
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// } else if(FIFOP_IS_1) {
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/* Another packet has been received and needs attention. */
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/* printf("attention\n");*/
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// process_poll(&rf230_process);
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// }
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// RELEASE_LOCK();
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#ifdef RF230BB_HOOK_RX_PACKET
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RF230BB_HOOK_RX_PACKET(buf,len);
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#endif
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/* Here return just the data length. The checksum is however still in the buffer for packet sniffing */
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return len - AUX_LEN;
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#if RADIOALWAYSON
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