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-rw-r--r--mpm/include/mpm/ad937x/ad937x_ctrl.hpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/mpm/include/mpm/ad937x/ad937x_ctrl.hpp b/mpm/include/mpm/ad937x/ad937x_ctrl.hpp
index 936655405..57840b9f3 100644
--- a/mpm/include/mpm/ad937x/ad937x_ctrl.hpp
+++ b/mpm/include/mpm/ad937x/ad937x_ctrl.hpp
@@ -259,7 +259,7 @@ public:
const std::string& which, const int8_t gain, const std::vector<int16_t>& fir) = 0;
//! get the FIR filter for the frontend which
- virtual std::vector<int16_t> get_fir(const std::string& which, int8_t& gain) = 0;
+ virtual std::pair<int8_t, std::vector<int16_t>> get_fir(const std::string& which) = 0;
// TODO: update docstring with temperature unit and calibration information
//! get the device temperature