From cb223210066d9e0e06fd1e80d58f58ebe1f51af6 Mon Sep 17 00:00:00 2001
From: Dhanya Thattil <dhanya.thattil@psi.ch>
Date: Mon, 16 Aug 2021 16:59:35 +0200
Subject: [PATCH] fixed for eiger 4 bit

---
 .../eigerDetectorServer/slsDetectorFunctionList.c     | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/slsDetectorServers/eigerDetectorServer/slsDetectorFunctionList.c b/slsDetectorServers/eigerDetectorServer/slsDetectorFunctionList.c
index 9638745e3..4622e97c5 100644
--- a/slsDetectorServers/eigerDetectorServer/slsDetectorFunctionList.c
+++ b/slsDetectorServers/eigerDetectorServer/slsDetectorFunctionList.c
@@ -2335,11 +2335,13 @@ void *start_timer(void *arg) {
     memset(imageData, 0, databytes * 2);
     {
         int npixels = NCHAN * NCHIP;
-        const int pixelsPerPacket = (double)datasize / eiger_dynamicrange;
+        const int pixelsPerPacket = (double)datasize / bytesPerPixel;
         int pixelVal = 0;
         if (dr == 4) {
             npixels /= 2;
-        } 
+        }
+        LOG(logINFOBLUE,
+            ("pixels:%d pixelsperpacket:%d\n", npixels, pixelsPerPacket));
         for (int i = 0; i < npixels; ++i) {
             if (i > 0 && i % pixelsPerPacket == 0) {
                 ++pixelVal;
@@ -2349,7 +2351,10 @@ void *start_timer(void *arg) {
                 *((uint8_t *)(imageData + i)) =
                     eiger_virtual_test_mode
                         ? 0xEE
-                        : (uint8_t)(((2 * pixelVal & 0xF) << 4) | ((2 * pixelVal + 1) & 0xF));
+                        : (uint8_t)(((2 * pixelVal & 0xF) << 4) |
+                                    ((2 * pixelVal) & 0xF));
+                //: (uint8_t)(((2 * pixelVal & 0xF) << 4) | ((2 * pixelVal + 1)
+                //& 0xF));
                 break;
             case 8:
                 *((uint8_t *)(imageData + i)) =