Basic reader interface

1 files changed, 69 insertions, 5 deletions

diff --git a/reader_yhy.c b/reader_yhy.c
index 51ac796..58bd345 100644
--- a/reader_yhy.c
+++ b/reader_yhy.c
@@ -1,22 +1,86 @@
 #include <stdio.h>
+#include <unistd.h>
+#include <sys/timerfd.h>
 
 #include "nfcommander.h"
 #include "config.h"
 
-static void __attribute__((constructor)) init() {
-	printf("This is the yhy reader plugin\n");
+#include "libyhy.h"
 
+static int reader_fd = -1;
+static int timer_fd = -1;
+
+int init(){
+	char reader_version[100];
 	size_t poll_timeout = 1000;
+	struct itimerspec timer_cfg = {
+		0
+	};
+
 	if(config_get("nfc", "interval")){
 		poll_timeout = strtoul(config_get("nfc", "interval"), NULL, 10);
 	}
 
+	timer_cfg.it_value.tv_sec = timer_cfg.it_interval.tv_sec = poll_timeout / 1000;
+	timer_cfg.it_value.tv_nsec = timer_cfg.it_interval.tv_nsec = (poll_timeout % 1000) * 1e6;
+
 	char* port = config_get("nfc", "device");
+	if(!port){
+		printf("Please configure nfc.device to the reader serial port\n");
+		return 1;
+	}
+
+	//TODO set cloexec, nonblock
+	printf("Opening %s with polltime %lu\n", port, poll_timeout);
+	reader_fd = yhy_open(port);
+	if(reader_fd < 0){
+		printf("Failed to open reader connection at %s\n", port);
+		return 1;
+	}
+
+	if(yhy_sync_read_version(reader_fd, reader_version, sizeof(reader_version)) > 0){
+		printf("Connected YHY reader reports firmware: %s\n", reader_version);
+	}
+
+	//create timerfd
+	timer_fd = timerfd_create(CLOCK_MONOTONIC, TFD_CLOEXEC);
+	if(timer_fd < 0){
+		printf("Failed to create timer fd\n");
+		return 1;
+	}
+
+	if(timerfd_settime(timer_fd, 0, &timer_cfg, NULL)){
+		printf("Failed to set timer\n");
+		return 1;
+	}
 
-	printf("Opening %s with polltime %d\n", port, poll_timeout);
+	core_manage_fd(reader_fd, 1, system_reader);
+	core_manage_fd(timer_fd, 1, system_reader);
+
+	return 0;
+}
+
+int handle(int fd){
+	uint8_t buffer[1024];
+
+	if(fd == timer_fd){
+		//acknowledge the timer
+		read(fd, buffer, sizeof(buffer));
+
+		//see if there is a tag
+		//TODO
+		return 0;
+	}
 
+	printf("Unknown FD in reader_yhy handler\n");
+	return 1;
 }
 
-static void __attribute__((destructor)) cleanup() {
-	printf("This is the yhy reader plugin cleanup\n");
+static void __attribute__((destructor)) cleanup(){
+	core_manage_fd(reader_fd, 0, system_reader);
+	close(reader_fd);
+	reader_fd = -1;
+	core_manage_fd(timer_fd, 0, system_reader);
+	close(timer_fd);
+	timer_fd = -1;
 }