mhu/reflow-oven-control-sw
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Remove fior filter again... Not needed.

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This commit is contained in:
Mario Hüttel 2021-08-24 21:49:23 +02:00
parent 4a98d41623
commit 88a4bb97a5
2 changed files with 0 additions and 101 deletions
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64
stm-firmware/fir-filter.c
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@ -1,64 +0,0 @@
/* Reflow Oven Controller
*
* Copyright (C) 2021 Mario Hüttel <mario.huettel@gmx.net>
*
* This file is part of the Reflow Oven Controller Project.
*
* The reflow oven controller is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* The Reflow Oven Control Firmware is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with the reflow oven controller project.
* If not, see <http://www.gnu.org/licenses/>.
*/
#include <reflow-controller/fir-filter.h>
void fir_filter_init_null(struct fir_filter_fixed *filter)
{
uint32_t idx;
if (!filter)
return;
filter->put_idx = 0U;
for (idx = 0; idx < filter->tap_count; idx++)
filter->data = 0;
}
int32_t fir_filter_process_sample(struct fir_filter_fixed *filter, int32_t sample)
{
uint32_t tap_idx;
uint32_t coeff_idx;
int32_t output = 0;
if (!filter)
return 0;
/* Store the new data point */
filter->data[filter->put_idx] = sample;
coeff_idx = filter->put_idx;
/* Apply fir taps on data */
for (tap_idx = 0; tap_idx < filter->tap_count; tap_idx++) {
output += filter->data[tap_idx] * filter->coefficients[coeff_idx];
if (coeff_idx)
coeff_idx--;
else
coeff_idx = filter->tap_count-1;
}
filter->put_idx++;
if (filter->put_idx >= filter->tap_count)
filter->put_idx = 0;
return output;
}

37
stm-firmware/include/reflow-controller/fir-filter.h
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/* Reflow Oven Controller
*
* Copyright (C) 2021 Mario Hüttel <mario.huettel@gmx.net>
*
* This file is part of the Reflow Oven Controller Project.
*
* The reflow oven controller is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* The Reflow Oven Control Firmware is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with the reflow oven controller project.
* If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef __FIR_FILTER_H__
#define __FIR_FILTER_H__
#include <stdint.h>
struct fir_filter_fixed {
uint32_t tap_count;
const int32_t *coefficients;
int32_t *data;
uint32_t put_idx;
};
void fir_filter_init_null(struct fir_filter_fixed *filter);
int32_t fir_filter_process_sample(struct fir_filter_fixed *filter, int32_t sample);
#endif /* __FIR_FILTER_H__ */