疑问

tuzhuke

USART_puts(&rx_buffer[LOCATION_INFO_START_IDX],rx_buffer[LOCATION_INFO_LEN_IDX]);

void USART_puts(uint8_t *s,uint8_t len)
第一个参数是指针，第二个是数据长度。

rx_buffer是模块通过无线收到的数据包。实际数据包是下面的东西，结合起来看

1. angle_msg[LOCATION_FLAG_IDX] = 1;
   
2. 
   
3.         angle_msg[LOCATION_INFO_START_IDX + (len++)] = 'm';
   
4.         angle_msg[LOCATION_INFO_START_IDX + (len++)] = 'r';
   
5. 
   
6.         angle_msg[LOCATION_INFO_START_IDX + (len++)] = 0x02;
   
7.         angle_msg[LOCATION_INFO_START_IDX + (len++)] = TAG_ID;//TAG ID
   
8. 
   
9.         angle_msg[LOCATION_INFO_START_IDX + (len++)] = (uint8)(framenum&0xFF);
   
10.         angle_msg[LOCATION_INFO_START_IDX + (len++)] = (uint8)((framenum>>8)&0xFF);
    
11. 
    
12.         angle_msg[LOCATION_INFO_START_IDX + (len++)] = (uint8)((distance1/10)&0xFF);
    
13.         angle_msg[LOCATION_INFO_START_IDX + (len++)] = (uint8)((distance1/10 >>8)&0xFF);
    
14. 
    
15.         angle_msg[LOCATION_INFO_START_IDX + (len++)] =  (uint8)((distance2/10)&0xFF);
    
16.         angle_msg[LOCATION_INFO_START_IDX + (len++)] =  (uint8)((distance2/10 >>8)&0xFF);
    
17.         angle_msg[LOCATION_INFO_START_IDX + (len++)] =  (uint8)((distance3/10)&0xFF);
    
18.         angle_msg[LOCATION_INFO_START_IDX + (len++)] =  (uint8)((distance3/10 >>8)&0xFF);
    
19.         angle_msg[LOCATION_INFO_START_IDX + (len++)] = (uint8)((distance1/10)&0xFF);
    
20.         angle_msg[LOCATION_INFO_START_IDX + (len++)] = (uint8)((distance1/10 >>8)&0xFF);
    
21.         angle_msg[LOCATION_INFO_START_IDX + (len++)] = '\n';
    
22.         angle_msg[LOCATION_INFO_START_IDX + (len++)] = '\r';

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