From e18a731a84d4d979c3afdb23f537b9d541a9eda5 Mon Sep 17 00:00:00 2001
From: Alice <alice.mazzoleni@psi.ch>
Date: Wed, 29 Jul 2026 14:20:54 +0200
Subject: [PATCH] fixed spi read and write

---
 slsDetectorSoftware/src/Module.cpp | 15 +++++++++++----
 1 file changed, 11 insertions(+), 4 deletions(-)

diff --git a/slsDetectorSoftware/src/Module.cpp b/slsDetectorSoftware/src/Module.cpp
index 62874e0f8..87180a8d0 100644
--- a/slsDetectorSoftware/src/Module.cpp
+++ b/slsDetectorSoftware/src/Module.cpp
@@ -4020,16 +4020,23 @@ void Module::simulatingActivityinDetector(const std::string &functionType,
 
 std::vector<uint8_t> Module::readSpi(int chip_id, int register_id,
                                      int n_bytes) const {
-    int args[] = {chip_id, register_id, n_bytes};
-    return sendToDetector<std::vector<uint8_t>>(F_SPI_READ, args);
+    auto client = createDetectorSocket();
+    client.sendCommand(F_SPI_READ, &chip_id, sizeof(chip_id));
+    client.Send(&register_id, sizeof(register_id));
+    client.Send(&n_bytes, sizeof(n_bytes));
+
+    std::vector<uint8_t> retval(n_bytes);
+    client.readReply(retval.data(), retval.size());
+    return retval;
 }
 
 std::vector<uint8_t> Module::writeSpi(int chip_id, int register_id,
                                       const std::vector<uint8_t> &data) {
     int count = static_cast<int>(data.size());
-    int args[] = {chip_id, register_id, count};
     auto client = createDetectorSocket();
-    client.sendCommand(F_SPI_WRITE, args, sizeof(args));
+    client.sendCommand(F_SPI_WRITE, &chip_id, sizeof(chip_id));
+    client.Send(&register_id, sizeof(register_id));
+    client.Send(&count, sizeof(count));
     client.Send(data);
     // Read the output from the SPI write. This contains the data before the
     // write