XBEE code to reduce program size
Dependencies: mbed
XBEE/XBEE.cpp@1:b0c665b697c7, 2018-10-14 (annotated)
- Committer:
- giovanniwsn
- Date:
- Sun Oct 14 05:56:14 2018 +0000
- Revision:
- 1:b0c665b697c7
- Parent:
- 0:7c9e8aaa85d4
removido os comentarios, codigo limpo
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
giovanniwsn | 0:7c9e8aaa85d4 | 1 | #include "XBEE.h" |
giovanniwsn | 0:7c9e8aaa85d4 | 2 | |
giovanniwsn | 0:7c9e8aaa85d4 | 3 | /* Class constructor */ |
giovanniwsn | 0:7c9e8aaa85d4 | 4 | XBEE::XBEE(Serial* serial, int baud):xbee(serial) |
giovanniwsn | 0:7c9e8aaa85d4 | 5 | { |
giovanniwsn | 0:7c9e8aaa85d4 | 6 | xbee->baud(baud); |
giovanniwsn | 0:7c9e8aaa85d4 | 7 | xbee->attach(callback(this, &XBEE::recvAttach), Serial::RxIrq); |
giovanniwsn | 0:7c9e8aaa85d4 | 8 | init(); |
giovanniwsn | 0:7c9e8aaa85d4 | 9 | } |
giovanniwsn | 0:7c9e8aaa85d4 | 10 | |
giovanniwsn | 0:7c9e8aaa85d4 | 11 | /* Initialize the Device XBEE */ |
giovanniwsn | 0:7c9e8aaa85d4 | 12 | void XBEE::init(void) |
giovanniwsn | 0:7c9e8aaa85d4 | 13 | { |
giovanniwsn | 0:7c9e8aaa85d4 | 14 | count_tx = 0; |
giovanniwsn | 0:7c9e8aaa85d4 | 15 | count_rx = 0; |
giovanniwsn | 0:7c9e8aaa85d4 | 16 | memset(&buf_tx,0,sizeof(buf_tx)); |
giovanniwsn | 0:7c9e8aaa85d4 | 17 | memset(&buf_rx,0,sizeof(buf_rx)); |
giovanniwsn | 0:7c9e8aaa85d4 | 18 | } |
giovanniwsn | 0:7c9e8aaa85d4 | 19 | |
giovanniwsn | 0:7c9e8aaa85d4 | 20 | /* Send message to the destination */ |
giovanniwsn | 0:7c9e8aaa85d4 | 21 | int XBEE::send_msg(char * str) |
giovanniwsn | 0:7c9e8aaa85d4 | 22 | { |
giovanniwsn | 0:7c9e8aaa85d4 | 23 | int n = strlen(str); |
giovanniwsn | 1:b0c665b697c7 | 24 | if(n > 92) return -1; |
giovanniwsn | 0:7c9e8aaa85d4 | 25 | create_TX(str); |
giovanniwsn | 0:7c9e8aaa85d4 | 26 | sendBuffer(); |
giovanniwsn | 0:7c9e8aaa85d4 | 27 | wait(0.2); |
giovanniwsn | 0:7c9e8aaa85d4 | 28 | return 0; |
giovanniwsn | 0:7c9e8aaa85d4 | 29 | } |
giovanniwsn | 0:7c9e8aaa85d4 | 30 | |
giovanniwsn | 0:7c9e8aaa85d4 | 31 | /* Receives a message, writes in str */ |
giovanniwsn | 0:7c9e8aaa85d4 | 32 | int XBEE::recv_msg(char * buf, int tam) |
giovanniwsn | 0:7c9e8aaa85d4 | 33 | { |
giovanniwsn | 0:7c9e8aaa85d4 | 34 | pkt_tx *p; |
giovanniwsn | 0:7c9e8aaa85d4 | 35 | int i; |
giovanniwsn | 0:7c9e8aaa85d4 | 36 | int ptam = 0; |
giovanniwsn | 0:7c9e8aaa85d4 | 37 | int j = 0; |
giovanniwsn | 0:7c9e8aaa85d4 | 38 | memset(buf,0,tam); |
giovanniwsn | 0:7c9e8aaa85d4 | 39 | |
giovanniwsn | 0:7c9e8aaa85d4 | 40 | for(i = 0; i < count_rx; i++) { |
giovanniwsn | 0:7c9e8aaa85d4 | 41 | if(buf_rx[i] == 0x7E) { |
giovanniwsn | 0:7c9e8aaa85d4 | 42 | p = (pkt_tx *) &buf_rx[i]; |
giovanniwsn | 0:7c9e8aaa85d4 | 43 | if(p->frame_type == 0x90) { |
giovanniwsn | 0:7c9e8aaa85d4 | 44 | ptam = p->length - 0x0C; |
giovanniwsn | 0:7c9e8aaa85d4 | 45 | if(tam < ptam + j) { |
giovanniwsn | 0:7c9e8aaa85d4 | 46 | return -1; |
giovanniwsn | 0:7c9e8aaa85d4 | 47 | } |
giovanniwsn | 1:b0c665b697c7 | 48 | // posicao aonde comeca msg |
giovanniwsn | 0:7c9e8aaa85d4 | 49 | memcpy(&buf[j], ((char *)(&p->broadcast_radius)), ptam); |
giovanniwsn | 0:7c9e8aaa85d4 | 50 | j += ptam; |
giovanniwsn | 0:7c9e8aaa85d4 | 51 | } |
giovanniwsn | 0:7c9e8aaa85d4 | 52 | } |
giovanniwsn | 0:7c9e8aaa85d4 | 53 | } |
giovanniwsn | 0:7c9e8aaa85d4 | 54 | return j; |
giovanniwsn | 0:7c9e8aaa85d4 | 55 | } |
giovanniwsn | 0:7c9e8aaa85d4 | 56 | |
giovanniwsn | 0:7c9e8aaa85d4 | 57 | /* Chamada por Interrupcao, RX */ |
giovanniwsn | 0:7c9e8aaa85d4 | 58 | void XBEE::recvAttach (void) |
giovanniwsn | 0:7c9e8aaa85d4 | 59 | { |
giovanniwsn | 1:b0c665b697c7 | 60 | while(xbee->readable()) { |
giovanniwsn | 1:b0c665b697c7 | 61 | buf_rx[count_rx%sizeof(buf_rx)] = xbee->getc(); |
giovanniwsn | 1:b0c665b697c7 | 62 | count_rx++; |
giovanniwsn | 1:b0c665b697c7 | 63 | } |
giovanniwsn | 0:7c9e8aaa85d4 | 64 | } |
giovanniwsn | 0:7c9e8aaa85d4 | 65 | |
giovanniwsn | 0:7c9e8aaa85d4 | 66 | /* Envia pacote do buffer_tx */ |
giovanniwsn | 0:7c9e8aaa85d4 | 67 | void XBEE::sendBuffer(void) |
giovanniwsn | 0:7c9e8aaa85d4 | 68 | { |
giovanniwsn | 0:7c9e8aaa85d4 | 69 | if(xbee->writeable()) { |
giovanniwsn | 0:7c9e8aaa85d4 | 70 | for(int i = 0; i < count_tx; i++) { |
giovanniwsn | 0:7c9e8aaa85d4 | 71 | xbee->putc(buf_tx[i]); |
giovanniwsn | 0:7c9e8aaa85d4 | 72 | } |
giovanniwsn | 0:7c9e8aaa85d4 | 73 | } |
giovanniwsn | 0:7c9e8aaa85d4 | 74 | } |
giovanniwsn | 0:7c9e8aaa85d4 | 75 | |
giovanniwsn | 0:7c9e8aaa85d4 | 76 | /* Cria pacote de mensagem */ |
giovanniwsn | 0:7c9e8aaa85d4 | 77 | int XBEE::create_TX(char * str) |
giovanniwsn | 0:7c9e8aaa85d4 | 78 | { |
giovanniwsn | 0:7c9e8aaa85d4 | 79 | int i = 0; |
giovanniwsn | 0:7c9e8aaa85d4 | 80 | int n = strlen(str); |
giovanniwsn | 0:7c9e8aaa85d4 | 81 | uint8_t count = 0; |
giovanniwsn | 0:7c9e8aaa85d4 | 82 | pkt_tx *p = (pkt_tx *) buf_tx; // ponteiro para buffer global |
giovanniwsn | 0:7c9e8aaa85d4 | 83 | |
giovanniwsn | 1:b0c665b697c7 | 84 | if(n > 92) return -1; // nao pode exceder 92 bytes |
giovanniwsn | 0:7c9e8aaa85d4 | 85 | count_tx = 0; |
giovanniwsn | 0:7c9e8aaa85d4 | 86 | memset(&buf_tx,0,sizeof(buf_tx)); |
giovanniwsn | 0:7c9e8aaa85d4 | 87 | |
giovanniwsn | 0:7c9e8aaa85d4 | 88 | p->start_delimiter = 0x7E; |
giovanniwsn | 0:7c9e8aaa85d4 | 89 | p->length = 0x0E + n; // pacote vazio + dados |
giovanniwsn | 0:7c9e8aaa85d4 | 90 | p->frame_type = 0x10; // transmit request |
giovanniwsn | 0:7c9e8aaa85d4 | 91 | p->frame_id = 1; |
giovanniwsn | 1:b0c665b697c7 | 92 | p->dest_addr64[6] = 0x00; //SL_H |
giovanniwsn | 1:b0c665b697c7 | 93 | p->dest_addr64[7] = 0x00; //SL_L |
giovanniwsn | 0:7c9e8aaa85d4 | 94 | p->dest_addr16[0] = 0xFF; //MY_H |
giovanniwsn | 0:7c9e8aaa85d4 | 95 | p->dest_addr16[1] = 0xFF; //MY_L |
giovanniwsn | 0:7c9e8aaa85d4 | 96 | memcpy(&p->rf_data, str, n); |
giovanniwsn | 0:7c9e8aaa85d4 | 97 | |
giovanniwsn | 1:b0c665b697c7 | 98 | // Calc. Checksum: comeca 3 pra frente, tenq passar 3 adiante no final |
giovanniwsn | 1:b0c665b697c7 | 99 | for(i = 3; i < p->length + 3; i++) count += buf_tx[i]; |
giovanniwsn | 1:b0c665b697c7 | 100 | |
giovanniwsn | 0:7c9e8aaa85d4 | 101 | count = 0xFF - count; |
giovanniwsn | 0:7c9e8aaa85d4 | 102 | p->rf_data[n] = count; |
giovanniwsn | 0:7c9e8aaa85d4 | 103 | |
giovanniwsn | 0:7c9e8aaa85d4 | 104 | //p->length tem o tamanho soh do frame, |
giovanniwsn | 0:7c9e8aaa85d4 | 105 | //pacote total eh o starter + length alto + length baixo + checksum |
giovanniwsn | 0:7c9e8aaa85d4 | 106 | count_tx = p->length + 4; |
giovanniwsn | 0:7c9e8aaa85d4 | 107 | return count_tx; |
giovanniwsn | 1:b0c665b697c7 | 108 | } |