-/**
- * mt_rfid.h
- */
-
#ifndef MT_RFID_H
#define MT_RFID_H
-// reader open parameters, see uFR manual
-#define READER_TYPE 1 // uFR type (1Mbps)
-#define PORT_INTERFACE 1 // serial, auto -> ftdi -> FAIL (some shity drivers missing)
-#define PORT_NAME "/dev/ttyUSB0"
+#include <ev.h>
+
+typedef struct ev_io_ufr {
+ ev_io w; // fd watcher
+ char uid_data[24]; // store uid here (uid is 10 bytes max)
+ char *uid; // current position in uid_data
+ int fd; // PORT_NAME file descriptor
+} ev_io_ufr;
+
+typedef struct mt_rfid_t {
+ ev_io_ufr w; // reader watcher
+ int fd; // print JSON output here
+} mt_rfid_t;
+
+#if HAVE_RFID
-// async uid sending parameters
-#define ASYNC_SUFFIX 0 // keep it zero: + separates uids, + terminates strings
-#define ASYNC_BAUD_RATE 1000000 // 1Mbps, otherwise UFR_COMMUNICATION_BREAK
+// reader open parameters, see uFR manual
+#define UFR_READER_TYPE 1 // uFR type (1Mbps)
+#define UFR_PORT_INTERFACE 1 // serial; auto->ftdi->FAIL
+#define UFR_PORT_NAME "/dev/ttyUSB0" // reader device
+#define UFR_ASYNC_BAUD_RATE 1000000 // 1Mbps, otherwise UFR_COMMUNICATION_BREAK
#define UFR_BEEP // define this to annoy people
-// really simple JSON helpers
-#define JSON_START() dprintf(fd,"{")
-#define JSON_NUM(NAME) dprintf(fd,"\"" #NAME "\": %d", NAME)
-#define JSON_NEXT() dprintf(fd,",")
-#define JSON_STR(NAME) dprintf(fd,"\"" #NAME "\": \"%s\"", NAME)
-#define JSON_END() dprintf(fd,"}\n")
+// connect to the reader, add self to loop and make it write to fd
+// return 0 on success, negative number otherwise
+int mt_rfid_init(mt_rfid_t *self, struct ev_loop *loop, int fd);
+
+// disconnect from reader
+void mt_rfid_deinit(mt_rfid_t *self);
+
+#else
+
+#define mt_rfid_init(self, loop, fd) 0
+#define mt_rfid_deinit(self) 0
+
+#endif /* HAVE_RFID */
#endif