Add configurable auto cca threshold and implement driver cca call.
Show smallest rssi in jackdaw menu.
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dak664
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5 changed files with 53 additions and 11 deletions
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@ -73,6 +73,12 @@
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#define RG_CSMA_BE CSMA_BE
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#define RG_CSMA_SEED_0 CSMA_SEED_0
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#define RG_PHY_RSSI PHY_RSSI
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#define SR_CCA_MODE 0x08, 0x60, 5
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//#define SR_CCA_CS_THRES 0x09, 0xf0, 4
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#define SR_CCA_ED_THRES 0x09, 0x0f, 0
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#define SR_CCA_REQUEST 0x08, 0x80, 7
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#define SR_CCA_DONE 0x01, 0x80, 7
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#define SR_CCA_STATUS 0x01, 0x40, 6
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/* RF230 register assignments, for reference */
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@ -209,8 +209,7 @@ static int rf230_receiving_packet(void);
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static int pending_packet(void);
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static int rf230_cca(void);
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signed char rf230_last_rssi;
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uint8_t rf230_last_correlation;
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uint8_t rf230_last_correlation,rf230_last_rssi,rf230_smallest_rssi;
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const struct radio_driver rf230_driver =
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{
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@ -714,6 +713,24 @@ rf230_init(void)
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hal_register_write(RG_CSMA_SEED_0,hal_register_read(RG_PHY_RSSI) );//upper two RSSI reg bits RND_VALUE are random in rf231
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// hal_register_write(CSMA_SEED_1,42 );
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/* CCA Mode Mode 1=Energy above threshold 2=Carrier sense only 3=Both 0=Either (RF231 only) */
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//hal_subregister_write(SR_CCA_MODE,1); //1 is the power-on default
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/* Carrier sense threshold (not implemented in RF230 or RF231) */
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// hal_subregister_write(SR_CCA_CS_THRES,1);
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/* CCA energy threshold = -91dB + 2*SR_CCA_ED_THRESH. Reset defaults to -77dB */
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/* Use RF230 base of -91; RF231 base is -90 according to datasheet */
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#if RF230_CONF_CCA_THRES < -91
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#warning RF230_CONF_CCA_THRES below hardware limit, setting to -91dBm
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hal_subregister_write(SR_CCA_ED_THRES,0);
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#elif RF230_CONF_CCA_THRES > -61
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#warning RF230_CONF_CCA_THRES above hardware limit, setting to -61dBm
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hal_subregister_write(SR_CCA_ED_THRES,15);
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#else
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hal_subregister_write(SR_CCA_ED_THRES,(RF230_CONF_CCA_THRES+91)/2);
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#endif
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/* Use automatic CRC unless manual is specified */
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#if RF230_CONF_CHECKSUM
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hal_subregister_write(SR_TX_AUTO_CRC_ON, 0);
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@ -883,7 +900,6 @@ rf230_transmit(unsigned short payload_len)
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}
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RELEASE_LOCK();
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if (tx_result==1) { //success, data pending from adressee
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tx_result=0; //Just show success?
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} else if (tx_result==3) { //CSMA channel access failure
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@ -1332,6 +1348,10 @@ if (RF230_receive_on) {
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#endif
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#endif /* speed vs. generality */
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/* Save the smallest rssi. The display routine can reset by setting it to zero */
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if ((rf230_smallest_rssi==0) || (rf230_last_rssi<rf230_smallest_rssi))
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rf230_smallest_rssi=rf230_last_rssi;
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// rf230_last_correlation = rxframe[rxframe_head].lqi;
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packetbuf_set_attr(PACKETBUF_ATTR_RSSI, rf230_last_rssi);
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packetbuf_set_attr(PACKETBUF_ATTR_LINK_QUALITY, rf230_last_correlation);
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@ -1451,10 +1471,18 @@ rf230_cca(void)
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rf230_on();
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}
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// cca = CCA_IS_1;
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DEBUGFLOW('c');
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cca=1;
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/* CCA Mode Mode 1=Energy above threshold 2=Carrier sense only 3=Both 0=Either (RF231 only) */
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/* Use the current mode. Note triggering a manual CCA is not recommended in extended mode */
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//hal_subregister_write(SR_CCA_MODE,1);
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/* Start the CCA, wait till done, return result */
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hal_subregister_write(SR_CCA_REQUEST,1);
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delay_us(TIME_CCA);
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//while ((hal_register_read(RG_TRX_STATUS) & 0x80) == 0 ) {continue;}
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while (!hal_subregister_read(SR_CCA_DONE)) {continue;}
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cca=hal_subregister_read(SR_CCA_STATUS);
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if(radio_was_off) {
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rf230_off();
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}
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@ -1481,4 +1509,3 @@ pending_packet(void)
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return pending;
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}
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/*---------------------------------------------------------------------------*/
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@ -214,8 +214,7 @@ uint8_t rf230_get_txpower(void);
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void rf230_set_promiscuous_mode(bool isPromiscuous);
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bool rf230_is_ready_to_send();
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extern signed char rf230_last_rssi;
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extern uint8_t rf230_last_correlation;
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extern uint8_t rf230_last_correlation,rf230_last_rssi,rf230_smallest_rssi;
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uint8_t rf230_get_raw_rssi(void);
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@ -223,4 +222,4 @@ uint8_t rf230_get_raw_rssi(void);
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#endif
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/** @} */
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/*EOF*/
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/*EOF*/
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@ -562,7 +562,12 @@ extern uip_ds6_netif_t uip_ds6_if;
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PRINTF_P(PSTR(" * Operates on channel %d\n\r"), rf230_get_channel());
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PRINTF_P(PSTR(" * TX Power(0=3dBm, 15=-17.2dBm): %d\n\r"), rf230_get_txpower());
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#endif
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PRINTF_P(PSTR(" * Current/Last RSSI: %d/%ddBm\n\r"), -91+(rf230_rssi()-1), -91+(rf230_last_rssi-1));
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if (rf230_smallest_rssi) {
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PRINTF_P(PSTR(" * Current/Last/Smallest RSSI: %d/%d/%ddBm\n\r"), -91+(rf230_rssi()-1), -91+(rf230_last_rssi-1),-91+(rf230_smallest_rssi-1));
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rf230_smallest_rssi=0;
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} else {
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PRINTF_P(PSTR(" * Current/Last/Smallest RSSI: %d/%d/--dBm\n\r"), -91+(rf230_rssi()-1), -91+(rf230_last_rssi-1));
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}
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#else /* RF230BB */
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PRINTF_P(PSTR(" * Operates on channel %d\n\r"), radio_get_operating_channel());
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@ -266,11 +266,16 @@ extern void mac_log_802_15_4_rx(const uint8_t* buffer, size_t total_len);
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/* AUTOACK receive mode gives better rssi measurements, even if ACK is never requested */
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#define RF230_CONF_AUTOACK 1
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/* Request 802.15.4 ACK on all packets sent by sicslowpan.c (else autoretry) */
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/* Broadcasts will be duplicated by the retry count! */
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/* Broadcasts will be duplicated by the retry count, since no one will ACK them! */
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#define SICSLOWPAN_CONF_ACK_ALL 0
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/* Number of auto retry attempts 0-15 (0 implies don't use extended TX_ARET_ON mode with CCA) */
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#define RF230_CONF_AUTORETRIES 1
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/* CCA theshold energy -91 to -61 dBm (default -77). Set this smaller than the expected minimum rssi to avoid packet collisions */
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/* The Jackdaw menu 'm' command is helpful for determining the smallest ever received rssi */
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#define RF230_CONF_CCA_THRES -85
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/* Allow 6loWPAN fragmentation (more efficient for large payloads over a reliable channel) */
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#define SICSLOWPAN_CONF_FRAG 1
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/* Timeout for fragment reassembly. A reissued browser GET will also cancel reassembly, typically in 2-3 seconds */
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#define SICSLOWPAN_CONF_MAXAGE 3
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#elif 0 /* Contiki-mac radio cycling */
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