FEP interrupt, response, ring buffer
Dependents: 087_myFEP_TX 087_myFEP_RX
FEP.cpp
- Committer:
- piroro4560
- Date:
- 2021-10-09
- Revision:
- 0:b01dc5fd59bc
- Child:
- 2:aa9a344a42a8
File content as of revision 0:b01dc5fd59bc:
#include "FEP.h" myFEP::myFEP(PinName tx, PinName rx, uint8_t addr_, int baud=115200) : RawSerial(tx, rx) { addr = addr_; bufindex = 0; retindex = 0; } void myFEP::StartReceive() { attach(callback(this, &myFEP::ReceiveBytes)); } void myFEP::ReceiveBytes() { if (bufindex > 256) bufindex %= 256; buffer[bufindex] = getc(); // データ取得 if ( (bufindex > 0) && (!strcmp((char*)(buffer + bufindex - 1) , "\r\n")) ) { // <CR><LF>確認 CheckData(); // 集計 } } void CheckData() { uint8_t temp=0, length=0; // temp:配列の位置 length:配列の長さ for (uint16_t i=0; i<256; i++) { temp = (256 + bufindex - i) % 256; if ( !str((char*)(buffer + temp) , "RBN") ) { // ヘッダ確認 length = ctoi(buffer[temp+6])*100 + ctoi(buffer[temp+7])*10 + ctoi(buffer[temp+8]); // メッセージの長さを計算 for (int j = 9; j < length+9; j++) { retdata[j-9] = buffer[temp+j]; // } } } } void GetData(uint8_t *data) { strcpy((char*)data, (char*)retdata); } uint8_t SendData(uint8_t *data) { return SendData(data, sizeof(data)); } uint8_t SendData(uint8_t *data, uint8_t length) { if(length > 128) return 1; uint8_t sendindex; // dataの添え字用の変数 printf("@TBN%03d%03d", addr, length); // コマンド送信 for (sendindex=0; sendindex<length; sendindex++) { putc(data[sendindex]); // データ部分送信 } printf("\r\n"); // <cr><lf> return GetResponse(); // 応答確認 } uint8_t GetResponse() { char res[4]; // 応答格納用変数 uint8_t resindex=0; // while (1) { res[resindex] = getc(); if (resindex >= 3) { if (!strcmp(temp, "P0\r\n")) return 0; else if (!strcmp(temp, "N0\r\n")) return 2; else if (!strcmp(temp, "N1\r\n")) return 3; else if (!strcmp(temp, "N3\r\n")) return 4; } if (++resindex > 3) return -1; } } uint8_t FEP::ctoi(char c) { if('0' <= c && c <= '9') return (c-'0'); else return -1; }