* OpenDispense 2
* UCC (University [of WA] Computer Club) Electronic Accounting System
*
- * handler_doror.c - Door Relay code
+ * handler_door.c - Door Relay code
*
* This file is licenced under the 3-clause BSD Licence. See the file
* COPYING for full details.
#include <fcntl.h>
#include <signal.h>
#include <unistd.h>
-#include <sys/wait.h>
#include <pty.h>
#define DOOR_UNLOCKED_DELAY 5 // Time in seconds before the door re-locks
int Door_InitHandler();
int Door_CanDispense(int User, int Item);
int Door_DoDispense(int User, int Item);
+ int writes(int fd, const char *str);
+char *ReadStatus(int FD);
// === GLOBALS ===
tHandler gDoor_Handler = {
Door_CanDispense,
Door_DoDispense
};
-char *gsDoor_SerialPort = "/dev/ttyS3";
+char *gsDoor_SerialPort; // Set from config in main.c
// == CODE ===
int Door_InitHandler(void)
return 1;
}
- door_serial_handle = InitSerial(gsDoor_SerialPort, 1200);
-
- if( write(door_serial_handle, "ATH1\n", 5) != 5 ) {
- fprintf(stderr, "Unable to open door (sending ATH1)\n");
- perror("Sending ATH1");
+ door_serial_handle = InitSerial(gsDoor_SerialPort, 115200);
+ if(door_serial_handle < 0) {
+ fprintf(stderr, "Unable to open door serial '%s'\n", gsDoor_SerialPort);
+ perror("Opening door port");
return -1;
}
-
- // Wait before re-locking
- sleep(DOOR_UNLOCKED_DELAY);
- if( write(door_serial_handle, "ATH0\n", 5) != 5 ) {
- fprintf(stderr, "Oh, hell! Door not re-locking, big error (sending ATH0 failed)\n");
- perror("Sending ATH0");
+ // Disable local echo
+ {
+ struct termios info;
+ tcgetattr(door_serial_handle, &info);
+ info.c_cflag &= ~CLOCAL;
+ tcsetattr(door_serial_handle, TCSANOW, &info);
+ }
+
+// flush(door_serial_handle);
+
+ writes(door_serial_handle, "4;");
+
+#if 0
+ char *status = ReadStatus(door_serial_handle);
+ if( !status ) return -1;
+ if( strcmp(status, "Opening door") != 0 ) {
+ fprintf(stderr, "Unknown/unexpected door status '%s'\n", status);
return -1;
}
+#endif
close(door_serial_handle);
return 0;
}
+int writes(int fd, const char *str)
+{
+ int len = strlen(str);
+
+ if( len != write(fd, str, len) )
+ {
+ return 1;
+ }
+ return 0;
+}
+
+char *ReadStatus(int FD)
+{
+ char tmpbuf[32];
+ int len;
+ len = read(FD, tmpbuf, sizeof(tmpbuf)-1);
+ tmpbuf[len] = 0;
+ char *msg = strchr(tmpbuf, ',');
+ if( !msg ) {
+ fprintf(stderr, "Door returned malformed data (no ',')\n");
+ return NULL;
+ }
+ msg ++;
+ char *end = strchr(tmpbuf, ';');
+ if( !end ) {
+ fprintf(stderr, "Door returned malformed data (no ';')\n");
+ return NULL;
+ }
+ *end = '\0';
+
+ return strdup(msg);
+}