maybe cmdline works for debug now?

cmdline/read-temp.c

@@ -24,6 +24,7 @@ respectively.
 #include <usb.h>        /* this is libusb */
 #include "opendevice.h" /* common code moved to separate module */
 #include <arpa/inet.h> //for htons()
+#include <unistd.h>
 
 #include "../firmware/masterchip/usbdrv/usbconfig.h"  /* device's VID/PID and names */
 
@@ -117,28 +118,54 @@ int                 cnt, vid, pid;
 		fprintf(stderr, "answer: value=0x%04x (%i)\n", rxIndex,rxIndex);
 //		fprintf(stderr, "rxValue = 0x%04x value = 0x%04x\n", rxValue, addr);
 //		fprintf(stderr, "rxIndex = 0x%04x index = 0x%04x\n", rxIndex, value);	  
-    } else if(strcasecmp(argv[1], "spi") == 0) {
-		if(argc != 5) {
+    } else if(strcasecmp(argv[1], "dbg") == 0) {
+		if(argc != 2) {
 			usage();
 			return 0;
 		}
-		int opcode, addr, value;
-		int i=0;
-		opcode = atoi(argv[2]);
-		addr = atoi(argv[3]);
-		value = atoi(argv[4]);
 
-		// x86 is little-endian, avr is big-endian
-		value = htons(value);
-		
-		cnt = usb_control_msg(handle, USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_ENDPOINT_IN, opcode, addr, value, buffer, sizeof(buffer), 5000);
-		if(cnt < 0){
-			fprintf(stderr, "\nUSB error in iteration %d: %s\n", i, usb_strerror());
+		int rqRefreshHasNew[] = {6, 0, 0};
+		int rqHasNew[] = {2, 0, 0};
+		int rqGetNew[] = {2, 1, 0};
+		int rqAdvance[] = {6, 1, 0};
+		int *rq;
+
+		while(1) {
+			// refresh "hasNew" variable
+			rq = rqRefreshHasNew;
+			cnt = usb_control_msg(handle, USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_ENDPOINT_IN, rq[0], rq[1], rq[2], buffer, sizeof(buffer), 5000);
+			if(cnt < 0){
+				fprintf(stderr, "\nUSB error in iteration ?!?: %s\n", usb_strerror());
+			}
+
+			// check whether we have new
+			rq = rqHasNew;
+			cnt = usb_control_msg(handle, USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_ENDPOINT_IN, rq[0], rq[1], rq[2], buffer, sizeof(buffer), 5000);
+			if(cnt < 0){
+				fprintf(stderr, "\nUSB error in iteration ?!?: %s\n", usb_strerror());
+			}
+			rxIndex = ((int)buffer[1] & 0xff) | (((int)buffer[0] & 0xff) << 8);
+			
+			if(rxIndex) { // if we have new data?
+				// get the new char and print it
+				rq = rqGetNew;
+				cnt = usb_control_msg(handle, USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_ENDPOINT_IN, rq[0], rq[1], rq[2], buffer, sizeof(buffer), 5000);
+				if(cnt < 0){
+					fprintf(stderr, "\nUSB error in iteration ?!?: %s\n", usb_strerror());
+				}
+				rxIndex = ((int)buffer[1] & 0xff) | (((int)buffer[0] & 0xff) << 8);
+				fprintf(stderr, "%c", rxIndex);
+
+				// advance the new char pointer...
+				rq = rqAdvance;
+				cnt = usb_control_msg(handle, USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_ENDPOINT_IN, rq[0], rq[1], rq[2], buffer, sizeof(buffer), 5000);
+				if(cnt < 0){
+					fprintf(stderr, "\nUSB error in iteration ?!?: %s\n", usb_strerror());
+				}
+				rxIndex = ((int)buffer[1] & 0xff) | (((int)buffer[0] & 0xff) << 8);
+			}
+			usleep(10000);
 		}
-		rxIndex = ((int)buffer[1] & 0xff) | (((int)buffer[0] & 0xff) << 8);
-		
-		fprintf(stderr, "request = 0x%04x\n", opcode);
-		fprintf(stderr, "answer: value=0x%04x (%i)\n", rxIndex,rxIndex);
     } else {
 		usage();
 	}