From c7654d28ae4cc6685a7900c3439bee994f941cf7 Mon Sep 17 00:00:00 2001
From: bkleiner <b.kleiner@str8labs.com>
Date: Fri, 11 Aug 2023 16:39:22 +0200
Subject: [PATCH] move filter functions to ram

---
 src/flight/filter.c | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/src/flight/filter.c b/src/flight/filter.c
index 91e896eb6..b9bcaf73f 100644
--- a/src/flight/filter.c
+++ b/src/flight/filter.c
@@ -48,7 +48,7 @@ void filter_lp_pt1_init(filter_lp_pt1 *filter, filter_state_t *state, uint8_t co
   filter_init_state(state, count);
 }
 
-void filter_lp_pt1_coeff(filter_lp_pt1 *filter, float hz) {
+RAM_FUNC void filter_lp_pt1_coeff(filter_lp_pt1 *filter, float hz) {
   if (filter->hz == hz && filter->sample_period_us == state.looptime_autodetect) {
     return;
   }
@@ -61,7 +61,7 @@ void filter_lp_pt1_coeff(filter_lp_pt1 *filter, float hz) {
   filter->alpha = sample_period / (rc + sample_period);
 }
 
-float filter_lp_pt1_step(filter_lp_pt1 *filter, filter_state_t *state, float in) {
+RAM_FUNC float filter_lp_pt1_step(filter_lp_pt1 *filter, filter_state_t *state, float in) {
   state->delay_element[0] = state->delay_element[0] + filter->alpha * (in - state->delay_element[0]);
   return state->delay_element[0];
 }
@@ -71,7 +71,7 @@ void filter_lp_pt2_init(filter_lp_pt2 *filter, filter_state_t *state, uint8_t co
   filter_init_state(state, count);
 }
 
-void filter_lp_pt2_coeff(filter_lp_pt2 *filter, float hz) {
+RAM_FUNC void filter_lp_pt2_coeff(filter_lp_pt2 *filter, float hz) {
   if (filter->hz == hz && filter->sample_period_us == state.looptime_autodetect) {
     return;
   }
@@ -84,7 +84,7 @@ void filter_lp_pt2_coeff(filter_lp_pt2 *filter, float hz) {
   filter->alpha = sample_period / (rc + sample_period);
 }
 
-float filter_lp_pt2_step(filter_lp_pt2 *filter, filter_state_t *state, float in) {
+RAM_FUNC float filter_lp_pt2_step(filter_lp_pt2 *filter, filter_state_t *state, float in) {
   state->delay_element[1] = state->delay_element[1] + filter->alpha * (in - state->delay_element[1]);
   state->delay_element[0] = state->delay_element[0] + filter->alpha * (state->delay_element[1] - state->delay_element[0]);
   return state->delay_element[0];
@@ -95,7 +95,7 @@ void filter_lp_pt3_init(filter_lp_pt3 *filter, filter_state_t *state, uint8_t co
   filter_init_state(state, count);
 }
 
-void filter_lp_pt3_coeff(filter_lp_pt3 *filter, float hz) {
+RAM_FUNC void filter_lp_pt3_coeff(filter_lp_pt3 *filter, float hz) {
   if (filter->hz == hz && filter->sample_period_us == state.looptime_autodetect) {
     return;
   }
@@ -108,7 +108,7 @@ void filter_lp_pt3_coeff(filter_lp_pt3 *filter, float hz) {
   filter->alpha = sample_period / (rc + sample_period);
 }
 
-float filter_lp_pt3_step(filter_lp_pt3 *filter, filter_state_t *state, float in) {
+RAM_FUNC float filter_lp_pt3_step(filter_lp_pt3 *filter, filter_state_t *state, float in) {
   state->delay_element[1] = state->delay_element[1] + filter->alpha * (in - state->delay_element[1]);
   state->delay_element[2] = state->delay_element[2] + filter->alpha * (state->delay_element[1] - state->delay_element[2]);
   state->delay_element[0] = state->delay_element[0] + filter->alpha * (state->delay_element[2] - state->delay_element[0]);
@@ -173,7 +173,7 @@ void filter_init(filter_type_t type, filter_t *filter, filter_state_t *state, ui
   }
 }
 
-void filter_coeff(filter_type_t type, filter_t *filter, float hz) {
+RAM_FUNC void filter_coeff(filter_type_t type, filter_t *filter, float hz) {
   switch (type) {
   case FILTER_LP_PT1:
     filter_lp_pt1_coeff(&filter->lp_pt1, hz);
@@ -190,7 +190,7 @@ void filter_coeff(filter_type_t type, filter_t *filter, float hz) {
   }
 }
 
-float filter_step(filter_type_t type, filter_t *filter, filter_state_t *state, float in) {
+RAM_FUNC float filter_step(filter_type_t type, filter_t *filter, filter_state_t *state, float in) {
   switch (type) {
   case FILTER_LP_PT1:
     return filter_lp_pt1_step(&filter->lp_pt1, state, in);