| | |
| | | #include "filters.h" |
| | | |
| | | |
| | | |
| | | /*------------------------------------ Marcos ------------------------------------------*/ |
| | | /* Inter-ranging delay period, in milliseconds. */ |
| | | #define RNG_DELAY_MS 100 |
| | |
| | | #define FINAL_MSG_TS_LEN 4 |
| | | |
| | | #define GROUP_ID_IDX 0 |
| | | #define SOURCE_ID_IDX 1 |
| | | #define MESSAGE_TYPE_IDX 3 |
| | | #define ANCHOR_ID_IDX 1 |
| | | #define TAG_ID_IDX 3 |
| | | #define MESSAGE_TYPE_IDX 5 |
| | | #define DIST_IDX 6 |
| | | |
| | | #define POLL 0x01 |
| | | #define RESPONSE 0x02 |
| | |
| | | dwt_setrxaftertxdelay(POLL_TX_TO_RESP_RX_DLY_UUS); //设置åéåå¼å¯æ¥æ¶ï¼å¹¶è®¾å®å»¶è¿æ¶é´ |
| | | dwt_setrxtimeout(RESP_RX_TIMEOUT_UUS); //è®¾ç½®æ¥æ¶è¶
æ¶æ¶é´ |
| | | } |
| | | |
| | | void Dw1000_App_Init(void) |
| | | { |
| | | tx_poll_msg[MESSAGE_TYPE_IDX]=POLL; |
| | | tx_resp_msg[MESSAGE_TYPE_IDX]=RESPONSE; |
| | | tx_final_msg[MESSAGE_TYPE_IDX]=FINAL; |
| | | memcpy(&tx_poll_msg[TAG_ID_IDX], &g_com_map[DEV_ID], 2); |
| | | memcpy(&tx_final_msg[TAG_ID_IDX], &g_com_map[DEV_ID], 2); |
| | | memcpy(&tx_resp_msg[ANCHOR_ID_IDX], &g_com_map[DEV_ID], 2); |
| | | |
| | | } |
| | | void tag_sleep_configuraion(void) |
| | | { |
| | | dwt_configuresleep(0x940, 0x7); |
| | |
| | | /* Check that the frame is the expected response from the companion "DS TWR responder" example. |
| | | * As the sequence number field of the frame is not relevant, it is cleared to simplify the validation of the frame. */ |
| | | rx_buffer[ALL_MSG_SN_IDX] = 0; |
| | | if (rx_buffer[9] == 0x10) //å¤ææ¥æ¶å°çæ°æ®æ¯å¦æ¯responseæ°æ® |
| | | if (rx_buffer[MESSAGE_TYPE_IDX] == RESPONSE) //å¤ææ¥æ¶å°çæ°æ®æ¯å¦æ¯responseæ°æ® |
| | | { |
| | | /* Retrieve poll transmission and response reception timestamp. */ |
| | | poll_tx_ts = get_tx_timestamp_u64(); //è·å¾POLLåéæ¶é´T1 |
| | | resp_rx_ts = get_rx_timestamp_u64(); //è·å¾RESPONSEæ¥æ¶æ¶é´T4 |
| | | |
| | | memcpy(&anchor_dist_last_frm[tag_id], &rx_buffer[11], 2); |
| | | |
| | | |
| | | memcpy(&anchor_dist_last_frm[tag_id], &rx_buffer[DIST_IDX], 2); |
| | | memcpy(&tx_final_msg[ANCHOR_ID_IDX], &rx_buffer[ANCHOR_ID_IDX], 2); |
| | | /* Compute final message transmission time. See NOTE 9 below. */ |
| | | final_tx_time = (resp_rx_ts + (RESP_RX_TO_FINAL_TX_DLY_UUS * UUS_TO_DWT_TIME)) >> 8;//计ç®finalå
åéæ¶é´ï¼T5=T4+Treply2 |
| | | dwt_setdelayedtrxtime(final_tx_time);//设置finalå
åéæ¶é´T5 |
| | |
| | | rx_buffer[ALL_MSG_SN_IDX] = 0; |
| | | |
| | | //å°æ¶å°çtag_idåå«åå
¥å次é讯çå
ä¸ï¼ä¸ºå¤æ ç¾é讯æå¡ï¼é²æ¢ä¸æ¬¡éè®¯ä¸æ¥æ¶å°ä¸åIDæ ç¾çæ°æ® |
| | | tag_id_recv = rx_buffer[5]; |
| | | tx_resp_msg[5] = tag_id_recv; |
| | | tag_id_recv = rx_buffer[TAG_ID_IDX]; |
| | | tx_resp_msg[TAG_ID_IDX] = tag_id_recv; |
| | | |
| | | |
| | | if (rx_buffer[9] == 0x21) //夿æ¯å¦æ¯pollå
æ°æ® |
| | | if (rx_buffer[MESSAGE_TYPE_IDX] == POLL) //夿æ¯å¦æ¯pollå
æ°æ® |
| | | { |
| | | /* Retrieve poll reception timestamp. */ |
| | | poll_rx_ts = get_rx_timestamp_u64();//è·å¾Pollå
æ¥æ¶æ¶é´T2 |
| | |
| | | dwt_setrxtimeout(FINAL_RX_TIMEOUT_UUS);//æ¥æ¶è¶
æ¶æ¶é´ |
| | | |
| | | /* Write and send the response message. See NOTE 9 below.*/ |
| | | memcpy(&tx_resp_msg[11], &anchor_dist_last_frm[tag_id_recv], 2); |
| | | memcpy(&tx_resp_msg[DIST_IDX], &anchor_dist_last_frm[tag_id_recv], 2); |
| | | tx_resp_msg[ALL_MSG_SN_IDX] = frame_seq_nb; |
| | | dwt_writetxdata(sizeof(tx_resp_msg), tx_resp_msg, 0);//åå
¥åéæ°æ® |
| | | dwt_writetxfctrl(sizeof(tx_resp_msg), 0);//设å®åéé¿åº¦ |
| | |
| | | /* Check that the frame is a final message sent by "DS TWR initiator" example. |
| | | * As the sequence number field of the frame is not used in this example, it can be zeroed to ease the validation of the frame. */ |
| | | rx_buffer[ALL_MSG_SN_IDX] = 0; |
| | | if (rx_buffer[9] == 0x23) //夿æ¯å¦ä¸ºFinalå
|
| | | if (rx_buffer[MESSAGE_TYPE_IDX] == FINAL&&rx_buffer[TAG_ID_IDX]==tag_id_recv&&rx_buffer[ANCHOR_ID_IDX]==g_com_map[DEV_ID]) //夿æ¯å¦ä¸ºFinalå
|
| | | { |
| | | uint32_t poll_tx_ts, resp_rx_ts, final_tx_ts; |
| | | uint32_t poll_rx_ts_32, resp_tx_ts_32, final_rx_ts_32; |
| | |
| | | /*--------------------------以ä¸ä¸ºéæµè·é»è¾------------------------*/ |
| | | LED0_BLINK; //æ¯æå䏿¬¡é讯åéªç䏿¬¡ |
| | | g_UWB_com_interval = 0; |
| | | dis_after_filter = LP_Frac_Update(p_Dis_Filter, dist_cm); |
| | | dis_after_filter=dist_cm; |
| | | //dis_after_filter = LP_Frac_Update(p_Dis_Filter, dist_cm); |
| | | |
| | | } |
| | | } |