mhu/reflow-oven-control-sw
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Issue #4: Implement Constant temperature function in GUI. This is useful to verify the oven parameters

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This commit is contained in:
Mario Hüttel
2020-11-30 21:43:38 +01:00
parent cd35f9e694
commit ef8e6231ff
8 changed files with 134 additions and 12 deletions
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4
stm-firmware/include/reflow-controller/oven-driver.h
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@@ -39,12 +39,14 @@ void oven_pid_ack_errors(void);
void oven_pid_init(struct pid_controller *controller_to_copy);
void oven_pid_handle(float target_temp);
void oven_pid_handle(void);
void oven_pid_stop(void);
void oven_pid_abort(void);
void oven_pid_set_target_temperature(float temp);
void oven_driver_apply_power_level(void);
enum oven_pid_status oven_pid_get_status(void);

5
stm-firmware/include/reflow-controller/periph-config/safety-adc-hwcfg.h
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@@ -34,8 +34,9 @@
#define SAFETY_ADC_TEMP_NOM_MV 760.0f
#define SAFETY_ADC_TEMP_MV_SLOPE 2.5f
#define SAFETY_ADC_NUM_OF_CHANNELS 2
#define SAFETY_ADC_CHANNELS TEMP_CHANNEL_NUM, INT_REF_CHANNEL_NUM
#define SAFETY_ADC_NUM_OF_CHANNELS 8
#define SAFETY_ADC_CHANNELS TEMP_CHANNEL_NUM, TEMP_CHANNEL_NUM, TEMP_CHANNEL_NUM, TEMP_CHANNEL_NUM, \
INT_REF_CHANNEL_NUM, INT_REF_CHANNEL_NUM, INT_REF_CHANNEL_NUM, INT_REF_CHANNEL_NUM
#endif /* __SAFETY_ADC_HWCFG_H__ */

1
stm-firmware/include/reflow-controller/pid-controller.h
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@@ -27,6 +27,7 @@ struct pid_controller {
float k_p;
float k_int_t;
float k_deriv_t;
float k_inv_deriv_t;
float output_sat_max;
float output_sat_min;
float integral_max;

7
stm-firmware/main.c
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@@ -55,6 +55,7 @@ static void setup_nvic_priorities(void)
NVIC_SetPriority(DMA2_Stream0_IRQn, 1);
/* Shelmatta UART TX */
NVIC_SetPriority(DMA2_Stream7_IRQn, 3);
NVIC_SetPriority(DMA2_Stream4_IRQn, 2);
}
FATFS fs;
@@ -208,8 +209,10 @@ int main(void)
handle_shell_uart_input(shell_handle);
safety_controller_handle();
/* Todo: Remove this */
oven_driver_set_power(0);
if (oven_pid_get_status() == OVEN_PID_RUNNING) {
oven_pid_handle();
}
oven_driver_apply_power_level();
safety_controller_report_timing(ERR_TIMING_MAIN_LOOP);

12
stm-firmware/oven-driver.c
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@@ -31,6 +31,8 @@ static struct pid_controller IN_SECTION(.ccm.bss) oven_pid;
static bool oven_pid_running;
static bool oven_pid_aborted;
static uint8_t IN_SECTION(.ccm.bss) oven_driver_power_level;
static float IN_SECTION(.ccm.bss) target_temp;
static uint64_t IN_SECTION(.ccm.bss) timestamp_last_run;
void oven_driver_init(void)
{
@@ -56,6 +58,7 @@ void oven_driver_init(void)
oven_pid_running = false;
oven_driver_set_power(0U);
oven_driver_apply_power_level();
}
void oven_driver_set_power(uint8_t power)
@@ -88,13 +91,18 @@ void oven_pid_init(struct pid_controller *controller_to_copy)
oven_pid_running = true;
oven_pid_aborted = false;
safety_controller_report_timing(ERR_TIMING_PID);
timestamp_last_run = systick_get_global_tick();
}
void oven_pid_handle(float target_temp)
void oven_pid_set_target_temperature(float temp)
{
target_temp = temp;
}
void oven_pid_handle(void)
{
float pid_out;
float current_temp;
static uint64_t timestamp_last_run;
if (oven_pid_running && !oven_pid_aborted) {
if (systick_ticks_have_passed(timestamp_last_run, (uint64_t)(oven_pid.sample_period * 1000))) {

17
stm-firmware/safety/safety-controller.c
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@@ -112,7 +112,7 @@ static volatile struct error_flag IN_SECTION(.ccm.data) flags[] = {
};
static volatile struct timing_mon IN_SECTION(.ccm.data) timings[] = {
TIM_MON_ENTRY(ERR_TIMING_PID, 2, 1000, ERR_FLAG_TIMING_PID),
TIM_MON_ENTRY(ERR_TIMING_PID, 2, 5000, ERR_FLAG_TIMING_PID),
TIM_MON_ENTRY(ERR_TIMING_MEAS_ADC, 0, 50, ERR_FLAG_TIMING_MEAS_ADC),
TIM_MON_ENTRY(ERR_TIMING_SAFETY_ADC, 10, SAFETY_CONTROLLER_ADC_DELAY_MS + 1000, ERR_FLAG_SAFETY_ADC),
TIM_MON_ENTRY(ERR_TIMING_MAIN_LOOP, 0, 1000, ERR_FLAG_TIMING_MAIN_LOOP),
@@ -538,6 +538,7 @@ static void safety_controller_handle_safety_adc()
{
static uint64_t last_result_timestamp = 0;
const uint16_t *channels;
uint32_t sum;
int poll_result;
float analog_value;
@@ -546,9 +547,19 @@ static void safety_controller_handle_safety_adc()
if (poll_result == 1) {
/* Data available */
channels = safety_adc_get_values();
analog_value = safety_adc_convert_channel(SAFETY_ADC_MEAS_TEMP, channels[0]);
/* Compute average of temp readings */
sum = channels[0] + channels[1] + channels[2] + channels[3];
sum /= 4;
analog_value = safety_adc_convert_channel(SAFETY_ADC_MEAS_TEMP, (uint16_t)sum);
safety_controller_report_analog_value(ERR_AMON_UC_TEMP, analog_value);
analog_value = safety_adc_convert_channel(SAFETY_ADC_MEAS_VREF, channels[1]);
/* Average VREF readings */
sum = channels[4] + channels[5] + channels[6] + channels[7];
sum /= 4;
analog_value = safety_adc_convert_channel(SAFETY_ADC_MEAS_VREF, (uint16_t)sum);
safety_controller_report_analog_value(ERR_AMON_VREF, analog_value);
last_result_timestamp = systick_get_global_tick();
safety_controller_report_timing(ERR_TIMING_SAFETY_ADC);

98
stm-firmware/ui/gui.c
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@@ -25,6 +25,7 @@
#include <reflow-controller/systick.h>
#include <reflow-controller/adc-meas.h>
#include <reflow-controller/safety/safety-controller.h>
#include <reflow-controller/settings/settings.h>
#include <reflow-controller/temp-converter.h>
#include <helper-macros/helper-macros.h>
#include <stm-periph/unique-id.h>
@@ -33,6 +34,7 @@
#include <stdio.h>
#include <string.h>
#include <inttypes.h>
#include <reflow-controller/oven-driver.h>
static char IN_SECTION(.ccm.bss) display_buffer[4][21] = {0};
static struct lcd_menu IN_SECTION(.ccm.bss) reflow_menu;
@@ -297,21 +299,113 @@ static void gui_menu_err_flags(struct lcd_menu *menu, enum menu_entry_func_entry
timestamp = systick_get_global_tick();
}
static void gui_menu_constant_temperature_driver(struct lcd_menu *menu, enum menu_entry_func_entry entry_type, void *parent)
{
static void IN_SECTION(.ccm.bss) *my_parent;
static int16_t IN_SECTION(.ccm.bss) temperature;
static bool IN_SECTION(.ccm.bss) fine;
enum button_state button;
int16_t rot;
int16_t temp_old;
if (entry_type == MENU_ENTRY_FIRST_ENTER) {
my_parent = parent;
temperature = 30;
menu_display_clear(menu);
menu_lcd_outputf(menu, 0, "Temp Controller");
temp_old = 0;
} else {
temp_old = temperature;
}
if (menu_get_button_ready_state(menu)) {
button = menu_get_button_state(menu);
rot = menu_get_rotary_delta(menu);
if (rot >= 4 || rot <= -4) {
menu_ack_rotary_delta(menu);
if (rot > 0)
temperature += (fine ? 1 : 10);
else
temperature -= (fine ? 1 : 10);
if (temperature > 300)
temperature = 300;
else if (temperature < 0)
temperature = 0;
}
switch (button) {
case BUTTON_SHORT_RELEASED:
fine = !fine;
break;
case BUTTON_LONG:
oven_pid_stop();
menu_entry_dropback(menu, my_parent);
break;
default:
break;
}
}
if (oven_pid_get_status() != OVEN_PID_RUNNING) {
menu_lcd_output(menu, 1, "PID stopped!");
menu_lcd_output(menu, 2, "Check Flags!");
} else {
if (temperature != temp_old) {
oven_pid_set_target_temperature((float)temperature);
menu_lcd_outputf(menu, 1, "Temp: %d " LCD_DEGREE_SYMBOL_STRING "C", (int)temperature);
}
}
}
static void gui_menu_constant_temperature_driver_setup(struct lcd_menu *menu, enum menu_entry_func_entry entry_type, void *parent)
{
static void IN_SECTION(.ccm.bss) *my_parent;
struct oven_pid_settings pid_settings;
enum button_state button;
struct pid_controller pid_controller;
if (entry_type == MENU_ENTRY_FIRST_ENTER) {
my_parent = parent;
/* Try loading PID parameters */
if (settings_load_pid_oven_parameters(&pid_settings)) {
menu_display_clear(menu);
menu_lcd_output(menu, 0, "Could not load");
menu_lcd_output(menu, 1, "PID parameters");
} else {
pid_init(&pid_controller, pid_settings.kd, pid_settings.ki, pid_settings.kp, 0, 100,
pid_settings.max_integral, pid_settings.t_sample);
oven_pid_init(&pid_controller);
menu_entry_enter(menu, gui_menu_constant_temperature_driver, true);
}
} else if (entry_type == MENU_ENTRY_DROPBACK) {
menu_entry_dropback(menu, my_parent);
}
if (menu_get_button_ready_state(menu)) {
button = menu_get_button_state(menu);
if (button == BUTTON_SHORT_RELEASED || button == BUTTON_LONG) {
menu_entry_dropback(menu, my_parent);
}
}
}
static void gui_menu_root_entry(struct lcd_menu *menu, enum menu_entry_func_entry entry_type, void *parent)
{
(void)parent;
static struct menu_list list;
bool menu_changed = false;
static const char * const root_entry_names[] = {
"About",
"Constant Temp",
"Monitoring",
"Error Flags",
"About",
NULL
};
static const menu_func_t root_entry_funcs[] = {
gui_menu_about,
gui_menu_constant_temperature_driver_setup,
gui_menu_monitor,
gui_menu_err_flags,
gui_menu_about,
};
enum button_state push_button;
int16_t rot_delta;

2
stm-firmware/ui/menu.c
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@@ -81,6 +81,8 @@ void menu_entry_dropback(struct lcd_menu *menu, menu_func_t parent_func)
else
menu->active_entry = menu->root_entry;
menu_ack_rotary_delta(menu);
menu->active_entry_type = MENU_ENTRY_DROPBACK;
}