From 2b257333a9b98e9696c64fc4e02d14a5fb1f00e8 Mon Sep 17 00:00:00 2001
From: Michael Gernoth <michael@gernoth.net>
Date: Tue, 14 May 2013 22:31:52 +0200
Subject: [PATCH 1/1] parse fs20pcs-response

---
 fs20pcs.c | 45 ++++++++++++++++++++++++++++++++++++++++++---
 1 file changed, 42 insertions(+), 3 deletions(-)

diff --git a/fs20pcs.c b/fs20pcs.c
index 8bc28c7..2a4ec37 100644
--- a/fs20pcs.c
+++ b/fs20pcs.c
@@ -104,6 +104,7 @@ int fs20pcs_send(libusb_device_handle *devh, unsigned char* send_data)
 	int err;
 	int cnt;
 	int i;
+	int ret;
 
 	err = libusb_interrupt_transfer(devh, 0x01, send_data, 11, &cnt, 5000);
 	if (err) {
@@ -117,12 +118,50 @@ int fs20pcs_send(libusb_device_handle *devh, unsigned char* send_data)
 		return 0;
 	}
 
-	for (i = 0; i < cnt; i++) {
-		printf("0x%02x ", recv_data[i]);
+	if ((recv_data[0] != 0x02) ||
+	    (recv_data[1] != 0x03) ||
+	    (recv_data[2] != 0xa0)) {
+	    fprintf(stderr, "Unexpected response: ");
+	    for (i = 0; i < cnt; i++) {
+		    fprintf(stderr, "0x%02x ", recv_data[i]);
+	    }
+	    fprintf(stderr, "\n");
+
+	    return 0;
+	}
+
+	ret = 1;
+
+	switch(recv_data[3]) {
+		case 0x00:
+			printf("Success");
+			break;
+		case 0x01:
+			printf("Firmware V%d.%d", ((recv_data[4] & 0xf0) >> 4) & 0x0f, recv_data[4] & 0x0f);
+			break;
+		case 0x02:
+			printf("Unknown command");
+			ret = 0;
+			break;
+		case 0x03:
+			printf("Wrong length");
+			ret = 0;
+			break;
+		case 0x04:
+			printf("Aborted sending long press");
+			break;
+		case 0x05:
+			printf("Nothing to stop");
+			break;
+		default:
+			printf("Unknown response: 0x%02x 0x%02x", recv_data[3], recv_data[4]);
+			ret = 0;
+			break;
 	}
+
 	printf("\n");
 
-	return 1;
+	return ret;
 }
 
 int main(int argc, char **argv)
-- 
2.39.5