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## Copyright (C) 2018 John Donoghue <john.donoghue@ieee.org>
##
## This program is free software: you can redistribute it and/or modify it
## under the terms of the GNU General Public License as published by
## the Free Software Foundation, either version 3 of the License, or
## (at your option) any later version.
##
## This program 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 this program. If not, see
## <https://www.gnu.org/licenses/>.
#Usage: octave --eval "make_conf('/usr/share/arduino/hardware/arduino/avr/variants/mega/pins_arduino.h')"
function retval = make_conf (header_file)
if nargin != 1
error ('Expected single input argument of header filename')
endif
pins = {};
ispwm = {};
isalong = {};
num_digital_pins = 0;
num_analog_pins = 0;
fd = fopen (header_file, "rt");
while !feof(fd)
l = fgetl(fd);
[t, m] = regexp(l, '#define\s+(\w+)\s+([^\s]+)$', 'tokens', 'match');
if !isempty(t)
toks = t(1){1};
if numel(toks) == 2
if strcmpi(toks{1}, "NUM_DIGITAL_PINS")
cnt = strrep(toks{2}, "u", "");
num_digital_pins = str2num(cnt);
elseif strcmpi(toks{1}, "NUM_ANALOG_INPUTS")
cnt = strrep(toks{2}, "u", "");
num_analog_pins = str2num(cnt);
else
idx = index(toks{1}, "PIN_");
if idx > 0
name = tolower(strtrim(toks{1}(idx+4:end)));
# id have other crap in it ?
id = strrep(toks{2}, "u", "");
id = str2num(id);
if !isempty(id)
# we have pin already ?
idx = find (cellfun(@(x) (x.id == id), pins), 1);
if isempty(idx)
p = [];
p.id = id;
p.name = sprintf("D%d", id);
p.modes = { 'digital' };
pins{end+1} = p;
idx = numel(pins);
endif
if name(1) == 'a'
pins{idx}.name = toupper(name);
pins{idx}.modes{end+1} = "analog";
elseif strncmp(name, "wire_", 5)
pins{idx}.modes{end+1} = ["i2c" name(5:end)];
elseif strncmp(name, "pin_led_", 8)
pins{idx}.modes{end+1} = ["led"];
else
pins{idx}.modes{end+1} = name;
endif
endif
elseif strcmp(toks{1}, "LED_BUILTIN")
id = str2num(toks{2});
if !isempty(id)
idx = find (cellfun(@(x) (x.id == id), pins), 1);
if isempty(idx)
p = {};
p.id = id;
p.name = sprintf("D%d", id);
p.modes = { 'digital' };
pins{end+1} = p;
idx = numel(pins);
endif
pins{idx}.modes{end+1} = "led";
endif
endif
endif
endif
endif
[t, m] = regexp(l, '#define\s+digitalPinHasPWM\((\w+)\)\s+(.*)$', 'tokens', 'match');
if ! isempty(t)
toks = t(1){1};
if numel(toks) == 2
ispwm.var = toks{1};
testv = strrep(toks{2}, "u", "");
ispwm.test = testv;
ispwm = {};
endif
endif
[t, m] = regexp(l, '#define\s+analogInputToDigitalPin\((\w+)\)\s+(.*)$', 'tokens', 'match');
if ! isempty(t)
toks = t(1){1};
if numel(toks) == 2
isanalog.var = toks{1};
testv = strrep(toks{2}, "u", "");
# simple expect analog after digital
testv = sprintf("(p + %d)", num_digital_pins);
isanalog.test = testv;
#isanalog={};
endif
endif
endwhile
fclose(fd);
#num_digital_pins
#num_analog_pins
# fill in any missing digitals
for i=0:num_analog_pins-1
name = sprintf("A%d", i);
idx = find (cellfun(@(x) (strcmpi(x.name,name)), pins), 1);
if isempty(idx)
t = sprintf("%s=%i; id=(%s);", isanalog.var, i, isanalog.test);
eval(t);
if id >= 0
p = {};
p.id = id;
p.name = sprintf("A%d", i);
p.modes = { 'digital', 'analog' };
pins{end+1} = p;
idx = numel(pins);
endif
endif
endfor
# fill in any missing digitals
for i=0:num_digital_pins-1
idx = find (cellfun(@(x) (x.id == i), pins), 1);
if isempty(idx)
p = {};
p.id = i;
p.name = sprintf("D%d", i);
p.modes = { 'digital' };
pins{end+1} = p;
idx = numel(pins);
endif
if !isempty(ispwm)
t = sprintf("%s=%i; pwm=(%s);", ispwm.var, i, ispwm.test);
eval(t);
if pwm
pins{idx}.modes{end+1} = "pwm";
endif
endif
endfor
# sort by pin num (id)
[tmp ind]=sort(cellfun(@(x) (x.id), pins));
# output file
printf ("# configuration generated from %s\n", header_file)
printf("function retval = config_XXX (initdata)\n");
printf(" retval = {};\n");
printf("\n");
printf(" # default board info - must be provided\n");
printf(" # will be filled in on connection.\n");
printf(" retval.board = '';\n");
printf(" retval.baudrate = 9600;\n");
printf(" retval.mcu = '';\n");
printf(" retval.voltref = 0;\n");
printf(" retval.libs = {};\n");
printf(" retval.port = '';\n");
printf("\n");
printf(" # info expected to be provided by config.\n");
printf(" retval.description = 'a board description';\n");
printf("\n");
printf(" # pin config\n");
printf(" retval.pins = {};\n");
for i = 1:numel(ind)
p = pins{ind(i)};
modes = [ "'" p.modes{1} "'"];
for m = 2:numel(p.modes)
modes = [ modes ", '" p.modes{m} "'" ];
endfor
printf(" retval.pins{end+1} = arduinoio.config.pin_info('%s', %d, { %s });\n", p.name, p.id, modes);
endfor
printf("endfunction\n");
endfunction
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