stm-firmware/Makefile

@@ -53,8 +53,6 @@ CFILES += stack-check.c
 
 CFILES += fatfs/diskio.c fatfs/ff.c fatfs/ffsystem.c fatfs/ffunicode.c fatfs/shimatta_sdio_driver/shimatta_sdio.c
 
-CFILES += pid-controller.c oven-driver.c
-
 DEFINES += -DDEBUGBUILD
 
 ###################################################################################

stm-firmware/include/reflow-controller/adc-meas.h

@@ -107,7 +107,7 @@ void adc_pt1000_get_resistance_calibration(float *offset, float *sensitivity_dev
 /**
  * @brief Get the current reistance value
  *
- * If the reistance calibration is enabled, this function applies the calculations of the raw resistance reading and
+ * If the reistance calibration is enabled, this function applies the calculations of the raw reistance reading and
  * returns the corrected value.
  *
  * If an ADC error is set, the status is negative. The status is 2 during the first measurements with a given filter setting. Technically, the resistance value is

stm-firmware/include/reflow-controller/oven-driver.h

@@ -1,24 +0,0 @@
-/* Reflow Oven Controller
-*
-* Copyright (C) 2020  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 __OVEN_DRIVER_H__
-#define __OVEN_DRIVER_H__
-
-#endif /* __OVEN_DRIVER_H__ */

stm-firmware/include/reflow-controller/pid-controller.h

@@ -1,44 +0,0 @@
-/* Reflow Oven Controller
-*
-* Copyright (C) 2020  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 __PID_CONTROLLER_H__
-#define __PID_CONTROLLER_H__
-
-struct pid_controller {
-	float k_deriv;
-	float k_int;
-	float k_p;
-	float output_sat_max;
-	float output_sat_min;
-	float integral_max;
-	volatile float control_output;
-	volatile float last_in;
-	volatile float integral;
-};
-
-void pid_init(struct pid_controller *pid, float k_deriv, float k_int, float k_p, float output_sat_min, float output_sat_max, float integral_max);
-
-void pid_zero(struct pid_controller *pid);
-
-float pid_sample(struct pid_controller *pid, float deviation);
-
-float pid_get_control_output(const struct pid_controller *pid);
-
-#endif /* __PID_CONTROLLER_H__ */

stm-firmware/main.c

@@ -32,9 +32,7 @@
 #include <reflow-controller/systick.h>
 #include <reflow-controller/adc-meas.h>
 #include <reflow-controller/shell.h>
-#include <reflow-controller/pid-controller.h>
 #include <reflow-controller/digio.h>
-#include <reflow-controller/temp-converter.h>
 #include <reflow-controller/rotary-encoder.h>
 #include <stm-periph/stm32-gpio-macros.h>
 #include <stm-periph/clock-enable-manager.h>
@@ -57,8 +55,8 @@ static void setup_nvic_priorities()
 static float pt1000_value;
 static volatile int pt1000_value_status;
 static uint32_t rot;
-static volatile float pid_out;
+
-static volatile float current_temperature;
+
 
 static inline void uart_gpio_config()
 {
@@ -115,9 +113,6 @@ int main()
 	shellmatta_handle_t shell_handle;
 	int uart_receive_status;
 
-	static struct pid_controller pid;
-	uint64_t pid_timestamp = 0;
-
 	setup_nvic_priorities();
 	systick_setup();
 
@@ -139,20 +134,9 @@ int main()
 		f_close(&test_file);
 	}
 
-	pid_init(&pid, 0.1, 0.1, 4.0, 0.0, 100.0, 40.0);
-	pid_zero(&pid);
 
 	while (1) {
 		pt1000_value_status = adc_pt1000_get_current_resistance(&pt1000_value);
-
-		if (pt1000_value_status >= 0) {
-			(void)temp_converter_convert_resistance_to_temp(pt1000_value, (float *)&current_temperature);
-			if ((systick_get_global_tick() - pid_timestamp) >= 250) {
-				pid_out = pid_sample(&pid, 100.0 - current_temperature);
-				pid_timestamp = systick_get_global_tick();
-			}
-		}
-
 		rot = rotary_encoder_get_abs_val();
 		uart_receive_status = uart_receive_data_with_dma(&shell_uart, &uart_input, &uart_input_len);
 		if (uart_receive_status >= 1)

stm-firmware/oven-driver.c

@@ -1,21 +0,0 @@
-/* Reflow Oven Controller
-*
-* Copyright (C) 2020  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/oven-driver.h>

stm-firmware/pid-controller.c

@@ -1,90 +0,0 @@
-/* Reflow Oven Controller
-*
-* Copyright (C) 2020  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/pid-controller.h>
-
-void pid_init(struct pid_controller *pid, float k_deriv, float k_int, float k_p, float output_sat_min, float output_sat_max, float integral_max)
-{
-	if (!pid)
-		return;
-
-	pid->k_p = k_p;
-	pid->k_int = k_int;
-	pid->k_deriv = k_deriv;
-	pid->output_sat_max = output_sat_max;
-	pid->output_sat_min = output_sat_min;
-	pid->control_output = 0;
-	pid->integral_max = integral_max;
-}
-
-void pid_zero(struct pid_controller *pid)
-{
-	pid->control_output = 0.0f;
-	pid->last_in = 0.0f;
-	pid->integral = 0.0f;
-}
-
-static void calculate_integral(struct pid_controller *pid, float deviation)
-{
-	pid->integral += deviation * pid->k_int;
-
-	if (pid->integral > pid->integral_max) {
-		pid->integral = pid->integral_max;
-	} else if (pid->integral < -pid->integral_max) {
-		pid->integral = -pid->integral_max;
-	}
-}
-
-float pid_sample(struct pid_controller *pid, float deviation)
-{
-	float output;
-
-	if (!pid)
-		return 0.0;
-
-	output = deviation * pid->k_p;
-
-	if (!(deviation > 0.0f && pid->control_output > pid->output_sat_max - 0.5) &&
-	    !(deviation < 0.0f && pid->control_output < pid->output_sat_min + 0.5)) {
-		calculate_integral(pid, deviation);
-	}
-
-	output += pid->integral;
-	output -= (deviation - pid->last_in) * pid->k_deriv;
-
-	pid->last_in = deviation;
-
-	if (output > pid->output_sat_max)
-		output = pid->output_sat_max;
-	if (output < pid->output_sat_min)
-		output = pid->output_sat_min;
-
-	pid->control_output = output;
-
-	return output;
-}
-
-float pid_get_control_output(const struct pid_controller *pid)
-{
-	if (!pid)
-		return 0.0f;
-
-	return pid->control_output;
-}