// == CODE ===
int Coke_InitHandler()
{
- giCoke_SerialFD = open(gsCoke_SerialPort, O_RDWR);
- regcomp(&gCoke_StatusRegex, "^slot\\s+(\\d)\\s+([^:]+):([a-zA-Z]+)\\s*", REG_EXTENDED);
+ printf("connecting to coke machine...\n");
+ giCoke_SerialFD = open(gsCoke_SerialPort, O_RDWR | O_NOCTTY | O_NONBLOCK);
+ if( giCoke_SerialFD == -1 ) {
+ fprintf(stderr, "ERROR: Unable to open coke serial port ('%s')\n", gsCoke_SerialPort);
+ }
+
+ InitSerial(giCoke_SerialFD, 9600);
+
+ CompileRegex(&gCoke_StatusRegex, "^slot\\s+(\\d)\\s+([^:]+):([a-zA-Z]+)\\s*", REG_EXTENDED);
return 0;
}
{
char tmp[32], *status;
regmatch_t matches[4];
+ int ret;
// Sanity please
- if( Item < 0 || Item > 6 ) return -1;
+ if( Item < 0 || Item > 6 ) return -1; // -EYOURBAD
// Ask the coke machine
sprintf(tmp, "s%i\n", Item);
write(giCoke_SerialFD, tmp, 2);
// Read the response
- read(giCoke_SerialFD, tmp, sizeof(tmp)-1);
- regexec(&gCoke_StatusRegex, tmp, sizeof(matches)/sizeof(matches[0]), matches, 0);
+ tmp[0] = '\0';
+ ret = read(giCoke_SerialFD, tmp, sizeof(tmp)-1);
+ //printf("ret = %i\n", ret);
+ if( ret <= 0 ) {
+ fprintf(stderr, "Coke machine is not being chatty (read = %i)\n", ret);
+ return -1;
+ }
+ ret = RunRegex(&gCoke_StatusRegex, tmp, sizeof(matches)/sizeof(matches[0]), matches, "Bad Response");
+ if( ret ) {
+ return -1;
+ }
tmp[ matches[3].rm_eo ] = '\0';
status = &tmp[ matches[3].rm_so ];
printf("Machine responded slot status '%s'\n", status);
if( strcmp(status, "full") == 0 )
- return 1;
+ return 0;
- return 0;
+ return 1;
}
/**