2020-02-15 17:54:45 +01:00
|
|
|
#!/usr/bin/env python3
|
|
|
|
|
|
|
|
|
|
import os
|
|
|
|
|
import sys
|
|
|
|
|
import numpy as np
|
|
|
|
|
|
|
|
|
|
license_header = """/* Reflow Oven Controller
|
2020-02-15 22:09:55 +01:00
|
|
|
*
|
|
|
|
|
* 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.
|
|
|
|
|
*
|
2020-02-21 21:22:01 +01:00
|
|
|
* The Reflow Oven Control Firmware is distributed in the hope that it will be useful,
|
2020-02-15 22:09:55 +01:00
|
|
|
* 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/>.
|
|
|
|
|
*/
|
|
|
|
|
|
2020-02-15 17:54:45 +01:00
|
|
|
"""
|
|
|
|
|
|
|
|
|
|
hfile="temp-converter-data.h"
|
|
|
|
|
|
|
|
|
|
project_dir = os.path.dirname(os.path.realpath(__file__))
|
|
|
|
|
include_prefix = 'reflow-controller'
|
|
|
|
|
module_include_dir = os.path.join(project_dir, os.path.join('include', include_prefix))
|
|
|
|
|
include_file = os.path.join(module_include_dir, hfile)
|
|
|
|
|
|
|
|
|
|
h_define = '__'+hfile.replace('.', '_').replace('-', '_').upper()+'__'
|
|
|
|
|
|
|
|
|
|
min_res = 1000
|
|
|
|
|
max_res = 2200
|
|
|
|
|
res_step = 20
|
|
|
|
|
|
|
|
|
|
R_zero = 1000.0
|
|
|
|
|
A = 3.9083E-3
|
|
|
|
|
B = -5.7750E-7
|
|
|
|
|
|
|
|
|
|
def calc_temp(resistance):
|
|
|
|
|
temp = (-R_zero * A + np.sqrt(R_zero*R_zero * A * A - 4* R_zero * B * (R_zero - resistance)))/(2*R_zero*B)
|
|
|
|
|
return temp
|
|
|
|
|
|
|
|
|
|
if ((max_res-min_res) % res_step) != 0:
|
|
|
|
|
print('Resistance range must be a multiple of res_step!')
|
|
|
|
|
sys.exit(-1)
|
|
|
|
|
|
|
|
|
|
print('Calculating temperature table for %f Ohm to %f Ohm in %f Ohm steps' % (min_res, max_res, res_step))
|
|
|
|
|
|
|
|
|
|
temp_array = ''
|
|
|
|
|
|
|
|
|
|
for res in range(min_res, max_res+res_step, res_step):
|
|
|
|
|
temp = calc_temp(res)
|
|
|
|
|
temp_array = temp_array+ ',%.2ff' % temp
|
|
|
|
|
|
|
|
|
|
temp_array = temp_array[1:]
|
|
|
|
|
|
|
|
|
|
with open(include_file, 'x') as f:
|
|
|
|
|
f.write(license_header)
|
|
|
|
|
f.write('\n')
|
|
|
|
|
f.write('#ifndef %s\n' % h_define)
|
|
|
|
|
f.write('#define %s\n\n' % h_define)
|
|
|
|
|
f.write('#define TEMP_CONVERSION_ARRAY_DATA %s\n' % temp_array)
|
|
|
|
|
f.write('#define TEMP_CONVERSION_MIN_RES %d\n' % min_res)
|
|
|
|
|
f.write('#define TEMP_CONVERSION_MAX_RES %d\n' % max_res)
|
|
|
|
|
f.write('#define TEMP_CONVERSION_RES_STEP %d\n' % res_step)
|
|
|
|
|
f.write('\n')
|
|
|
|
|
f.write('#endif /* %s */\n' % h_define)
|
