reflow-oven-control-sw/stm-firmware/temp-profile-executer.c

269 lines
6.5 KiB
C

/* 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/temp-profile-executer.h>
#include <reflow-controller/systick.h>
#include <helper-macros/helper-macros.h>
#include <reflow-controller/oven-driver.h>
#include <reflow-controller/temp-converter.h>
#include <reflow-controller/adc-meas.h>
#include <reflow-controller/digio.h>
static struct tpe_current_state IN_SECTION(.ccm.data) state = {
.status = TPE_OFF,
.start_timestamp = 0,
};
static bool IN_SECTION(.ccm.bss) pid_should_run;
struct pid_controller IN_SECTION(.ccm.bss) pid;
bool IN_SECTION(.ccm.bss) cmd_continue;
static SlList *command_list = NULL;
static void tpe_abort(void)
{
temp_profile_executer_stop();
state.status = TPE_ABORT;
}
enum pl_ret_val temp_profile_executer_start(const char *filename)
{
uint32_t parsed_count = 0;
enum pl_ret_val res;
state.setpoint = 0.0f;
state.start_timestamp = 0ULL;
state.setpoint = 0.0f;
state.step = 0;
state.profile_steps = 0;
oven_pid_stop();
pid_should_run = false;
state.status = TPE_OFF;
state.profile_steps = 0;
cmd_continue = false;
/* This should never happen... But who knows */
if (command_list) {
temp_profile_free_command_list(&command_list);
}
res = temp_profile_parse_from_file(filename, &command_list, MAX_PROFILE_LENGTH, &parsed_count);
if (res == PL_RET_SUCCESS) {
state.profile_steps = parsed_count;
state.status = TPE_RUNNING;
state.start_timestamp = systick_get_global_tick();
} else {
if (command_list)
temp_profile_free_command_list(&command_list);
}
return res;
}
static bool cmd_wait_temp(struct pl_command *cmd, bool cmd_continue)
{
(void)cmd_continue;
float resistance;
int res;
float temp;
res = adc_pt1000_get_current_resistance(&resistance);
if (res < 0) {
tpe_abort();
return false;
}
(void)temp_converter_convert_resistance_to_temp(resistance, &temp);
if (ABS(cmd->params[0] - temp) < 3.0f)
return true;
return false;
}
static bool cmd_wait_time(struct pl_command *cmd, bool cmd_continue)
{
static uint64_t temp_tick = 0UL;
if (cmd_continue) {
if (systick_ticks_have_passed(temp_tick,
(uint64_t)(cmd->params[0] * 1000.0f)))
return true;
} else {
temp_tick = systick_get_global_tick();
}
return false;
}
static void reactivate_pid_if_suspended(void)
{
if (oven_pid_get_status() == OVEN_PID_DEACTIVATED)
oven_pid_init(&pid);
pid_should_run = true;
}
static bool cmd_set_temp(struct pl_command *cmd, bool cmd_continue)
{
(void)cmd_continue;
reactivate_pid_if_suspended();
oven_pid_set_target_temperature(cmd->params[0]);
state.setpoint = cmd->params[0];
return true;
}
static bool cmd_ramp(struct pl_command *cmd, bool cmd_continue)
{
static uint64_t IN_SECTION(.ccm.bss) start_timestamp;
static float IN_SECTION(.ccm.bss) start_temp;
static float IN_SECTION(.ccm.bss) slope;
float secs_passed;
bool ret = false;
if (!cmd_continue) {
/* Init of command */
start_temp = state.setpoint;
slope = (cmd->params[0] - start_temp) / cmd->params[1];
reactivate_pid_if_suspended();
oven_pid_set_target_temperature(start_temp);
start_timestamp = systick_get_global_tick();
} else {
secs_passed = ((float)(systick_get_global_tick() - start_timestamp)) / 1000.0f;
if ((state.setpoint <= cmd->params[0] && start_temp < cmd->params[0]) ||
(state.setpoint >= cmd->params[0] && start_temp > cmd->params[0])) {
state.setpoint = start_temp + secs_passed * slope;
} else {
state.setpoint = cmd->params[0];
ret = true;
}
oven_pid_set_target_temperature(state.setpoint);
}
return ret;
}
int temp_profile_executer_handle(void)
{
struct pl_command *current_cmd;
static uint64_t last_tick = 0UL;
bool advance;
uint32_t next_step;
/* Return if no profile is currently executed */
if (state.status != TPE_RUNNING)
return -1;
/* Abort profile execution if oven PID is aborted. This is most likely due to some error flags */
if (oven_pid_get_status() == OVEN_PID_ABORTED && pid_should_run) {
tpe_abort();
oven_pid_stop();
return -1;
}
/* Execute Temp Profile every 100 ms. If not yet due, return */
if (!systick_ticks_have_passed(last_tick, 100))
return 0;
current_cmd = (struct pl_command *)sl_list_nth(command_list, state.step)->data;
next_step = state.step;
switch (current_cmd->cmd) {
case PL_WAIT_FOR_TIME:
advance = cmd_wait_time(current_cmd, cmd_continue);
break;
case PL_WAIT_FOR_TEMP:
advance = cmd_wait_temp(current_cmd, cmd_continue);
break;
case PL_SET_TEMP:
advance = cmd_set_temp(current_cmd, cmd_continue);
break;
case PL_LOUDSPEAKER_SET:
loudspeaker_set((uint16_t)current_cmd->params[0]);
advance = true;
break;
case PL_OFF:
oven_pid_stop();
pid_should_run = false;
advance = true;
break;
case PL_PID_CONF:
pid_init(&pid, current_cmd->params[0], /* Kd */
current_cmd->params[1], /* Ki */
current_cmd->params[2], /* Kp */
0.0f, 0.0f,
current_cmd->params[3], /* Int max */
current_cmd->params[4], /* Kd tau */
current_cmd->params[5]); /* Period */
oven_pid_init(&pid);
advance = true;
pid_should_run = true;
break;
case PL_SET_RAMP:
advance = cmd_ramp(current_cmd, cmd_continue);
break;
default:
tpe_abort();
advance = true;
break;
}
if (advance)
next_step++;
if (next_step != state.step) {
state.step = next_step;
if (next_step >= state.profile_steps) {
(void)temp_profile_executer_stop();
} else {
cmd_continue = false;
}
} else {
cmd_continue = true;
}
last_tick = systick_get_global_tick();
return 0;
}
const struct tpe_current_state *temp_profile_executer_status(void)
{
return &state;
}
int temp_profile_executer_stop(void)
{
if (state.status == TPE_RUNNING) {
state.status = TPE_OFF;
oven_pid_stop();
}
/* Free the command list */
if (command_list)
temp_profile_free_command_list(&command_list);
loudspeaker_set(0);
return 0;
}