Inscape / Mbed 2 deprecated xrocusOS

UART Command Parser Time Manager Data Store for SD Card for stm32l476 [it's not Licensed as BSD/GPLx]

Dependencies:   mbed SDFileSystem

common/CommandParser.cpp@13:7cda5bef6390, 2019-05-27 (annotated)

Committer:
Inscape_ao
Date:
Mon May 27 03:07:42 2019 +0000
Revision:
13:7cda5bef6390
Parent:
7:9ab8809f9693
Child:
19:36072b9b79f3
add uprintf(UART_printf); (this function can be disabled by uartOn=false)

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Inscape_ao 0:c347f602596d 1 #include "global.h"
Inscape_ao 0:c347f602596d 2
Inscape_ao 2:a694440145e9 3 /* UartLineHandler (start parsing) */
Inscape_ao 0:c347f602596d 4 static void lineHandler(char *line)
Inscape_ao 0:c347f602596d 5 {
Inscape_ao 0:c347f602596d 6 pCP->parse(line);
Inscape_ao 0:c347f602596d 7 }
Inscape_ao 0:c347f602596d 8
Inscape_ao 2:a694440145e9 9 /* constructor */
Inscape_ao 0:c347f602596d 10 CommandParser::CommandParser(UartReceiver *setUartReceiver, int setDeviceID,
Inscape_ao 0:c347f602596d 11 CmdParseRule *setRuleTable, int setRuleTableLen)
Inscape_ao 0:c347f602596d 12 {
Inscape_ao 0:c347f602596d 13 pR = setUartReceiver;
Inscape_ao 0:c347f602596d 14 pR->setLineHandler(lineHandler);
Inscape_ao 0:c347f602596d 15 deviceID = setDeviceID;
Inscape_ao 0:c347f602596d 16 ruleTable = setRuleTable;
Inscape_ao 0:c347f602596d 17 ruleTableLen = setRuleTableLen;
Inscape_ao 0:c347f602596d 18 pUart = pR->getCurrentUart();
Inscape_ao 0:c347f602596d 19 }
Inscape_ao 0:c347f602596d 20
Inscape_ao 2:a694440145e9 21 /* start parsing */
Inscape_ao 0:c347f602596d 22 void CommandParser::run(void)
Inscape_ao 0:c347f602596d 23 {
Inscape_ao 0:c347f602596d 24 pR->run();
Inscape_ao 0:c347f602596d 25 }
Inscape_ao 0:c347f602596d 26
Inscape_ao 2:a694440145e9 27 /* process parsing */
Inscape_ao 0:c347f602596d 28 int CommandParser::parse(char *pStr)
Inscape_ao 0:c347f602596d 29 {
Inscape_ao 0:c347f602596d 30 int rn;
Inscape_ao 0:c347f602596d 31 int len;
Inscape_ao 0:c347f602596d 32 char *head;
Inscape_ao 0:c347f602596d 33 /** skip - empty command*/
Inscape_ao 0:c347f602596d 34 if (pStr[0] == '\0') {
Inscape_ao 13:7cda5bef6390 35 uprintf("(empty)\n");
Inscape_ao 0:c347f602596d 36 return 0;
Inscape_ao 0:c347f602596d 37 }
Inscape_ao 0:c347f602596d 38 /* protection for buffer overrun */
Inscape_ao 0:c347f602596d 39 pStr[UartReceiver::MaxStr] = '\0';
Inscape_ao 0:c347f602596d 40 len = strlen(pStr);
Inscape_ao 0:c347f602596d 41
Inscape_ao 0:c347f602596d 42 /* parsing */
Inscape_ao 0:c347f602596d 43 head = pStr;
Inscape_ao 13:7cda5bef6390 44 uprintf("%s\n", pStr);
Inscape_ao 0:c347f602596d 45
Inscape_ao 0:c347f602596d 46 /** Command Format ":0 CMD 0000" */
Inscape_ao 0:c347f602596d 47 if (len != CmdLen) {
Inscape_ao 1:71c9c97c9f3d 48 this->reply(false, CommandParser::CmdReply::InvalidLen);
Inscape_ao 0:c347f602596d 49 return -1;
Inscape_ao 0:c347f602596d 50 }
Inscape_ao 0:c347f602596d 51 /** check Command Header */
Inscape_ao 0:c347f602596d 52 if (head[0] != ':') {
Inscape_ao 1:71c9c97c9f3d 53 this->reply(false, CommandParser::CmdReply::InvalidFmt);
Inscape_ao 0:c347f602596d 54 return -1;
Inscape_ao 0:c347f602596d 55 }
Inscape_ao 0:c347f602596d 56 /** check Command DeviceID */
Inscape_ao 0:c347f602596d 57 if ((head[1] - '0') != deviceID) {
Inscape_ao 0:c347f602596d 58 return 0;
Inscape_ao 0:c347f602596d 59 }
Inscape_ao 0:c347f602596d 60
Inscape_ao 0:c347f602596d 61 /** search Command */
Inscape_ao 0:c347f602596d 62 head += 3;
Inscape_ao 0:c347f602596d 63 for(rn = 0; rn < ruleTableLen; rn++) {
Inscape_ao 0:c347f602596d 64 int check;
Inscape_ao 0:c347f602596d 65 check = strncmp((const char*)(ruleTable[rn].cmdName),
Inscape_ao 0:c347f602596d 66 (const char*)(head),CmdNameLen);
Inscape_ao 0:c347f602596d 67 if (check != 0) {
Inscape_ao 0:c347f602596d 68 continue;
Inscape_ao 0:c347f602596d 69 }
Inscape_ao 0:c347f602596d 70 head += 4;
Inscape_ao 2:a694440145e9 71 return (*ruleTable[rn].func)(this, head,
Inscape_ao 2:a694440145e9 72 ruleTable[rn].exarg);
Inscape_ao 0:c347f602596d 73
Inscape_ao 0:c347f602596d 74 }
Inscape_ao 1:71c9c97c9f3d 75 this->reply(false, CommandParser::CmdReply::InvalidCmd);
Inscape_ao 0:c347f602596d 76 return -1;
Inscape_ao 1:71c9c97c9f3d 77 }
Inscape_ao 1:71c9c97c9f3d 78
Inscape_ao 2:a694440145e9 79 /* get my Device ID */
Inscape_ao 1:71c9c97c9f3d 80 int CommandParser::getDeviceID(void)
Inscape_ao 1:71c9c97c9f3d 81 {
Inscape_ao 1:71c9c97c9f3d 82 return deviceID;
Inscape_ao 1:71c9c97c9f3d 83 }
Inscape_ao 1:71c9c97c9f3d 84
Inscape_ao 2:a694440145e9 85 /* generate ACK/NAK with int code */
Inscape_ao 1:71c9c97c9f3d 86 void CommandParser::reply(bool ack, int replyCode)
Inscape_ao 1:71c9c97c9f3d 87 {
Inscape_ao 1:71c9c97c9f3d 88 char replyStr[] = "0000";
Inscape_ao 1:71c9c97c9f3d 89 sprintf(replyStr, "%04d", replyCode);
Inscape_ao 1:71c9c97c9f3d 90 this->reply(ack, replyStr);
Inscape_ao 1:71c9c97c9f3d 91 }
Inscape_ao 1:71c9c97c9f3d 92
Inscape_ao 2:a694440145e9 93 /* generate ACK/NAK with String */
Inscape_ao 1:71c9c97c9f3d 94 void CommandParser::reply(bool ack, char* replyStr)
Inscape_ao 1:71c9c97c9f3d 95 {
Inscape_ao 7:9ab8809f9693 96 const char CmdReplyStrDefault[] = ":0 ACK 0004 0000\n";
Inscape_ao 1:71c9c97c9f3d 97 const int CmdReplyLen = sizeof(CmdReplyStrDefault) /* include \0 */;
Inscape_ao 1:71c9c97c9f3d 98 const int CmdReplyDevPos = 1;
Inscape_ao 1:71c9c97c9f3d 99 const int CmdReplyAckPos = 3;
Inscape_ao 7:9ab8809f9693 100 const int CmdReplyCodePos = 12;
Inscape_ao 7:9ab8809f9693 101 const int CmdReplyEndPos = 16;
Inscape_ao 1:71c9c97c9f3d 102
Inscape_ao 1:71c9c97c9f3d 103 char str[CmdReplyLen];
Inscape_ao 1:71c9c97c9f3d 104
Inscape_ao 1:71c9c97c9f3d 105 /* set default handler */
Inscape_ao 1:71c9c97c9f3d 106 memcpy(str, CmdReplyStrDefault, CmdReplyLen);
Inscape_ao 1:71c9c97c9f3d 107 str[CmdReplyDevPos] = '0' + getDeviceID();
Inscape_ao 1:71c9c97c9f3d 108 if (!ack) {
Inscape_ao 1:71c9c97c9f3d 109 memcpy(&str[CmdReplyAckPos], "NAK", 3);
Inscape_ao 1:71c9c97c9f3d 110 }
Inscape_ao 1:71c9c97c9f3d 111 memcpy(&str[CmdReplyCodePos], replyStr, 4);
Inscape_ao 1:71c9c97c9f3d 112 str[CmdReplyEndPos] = '\n';
Inscape_ao 13:7cda5bef6390 113 uprintf(str);
Inscape_ao 2:a694440145e9 114 }
Inscape_ao 2:a694440145e9 115
Inscape_ao 2:a694440145e9 116 /* get currentUart */
Inscape_ao 2:a694440145e9 117 Serial *CommandParser::getCurrentUart(void)
Inscape_ao 2:a694440145e9 118 {
Inscape_ao 2:a694440145e9 119 return pUart;
Inscape_ao 0:c347f602596d 120 }