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.
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dak664
parent
7b7ad4336e
commit
e3e1e04948
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@ -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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