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Made a userspace that allows you to use your keyboard as an order of operations based calculator (#2864)

Browse Source 
* Made DZ60 layout with calculator

* Cleaned up and commented, preparing to fix bug with negative in front of open parenthesis as first character

* Fixed bug where negative sign infront of parenthesis as first character was parsed incorrectly

* Made a better solution for the bug from the previous commit

* Modularized and added a userfile so that this code can be used on various keyboards, found in doogle999

* Removed commented code from keymap

* Made the layer that is used for calculations a define so that it can be changed per keyboard

* Made the readme

* Made the readme in the correct place

* Revert "Made the readme in the correct place"

This reverts commit 7f8b59ed9e59c77401a48be3a7ac1e8fd8e84e32.

* Manually synced with qmk upstream

* Stopped repeat, made keys print character that they are defined as rather than what the keyboard wants them to do

* Added support for numpad, might make all keycodes custom so that there is no need to change doogle999.c if you want to change the keycode that is associated with a function, also made numpad automatically activating an option

* Fixed some bugs with backspacing, updated the readme

* Fixed some bugs with numlock turning on at the wrong times when a shift key was down

* Made the return to layer work automatically instead of just forcing it to layer 0

* fixes and style changes, 20% decreased binary size

* Fixed some bugs with double printing and compilation errors on my side

* Fixed bug with exceeding the buffer size

* Removed changes that added const-ness

* Made changes so that backspace does not repeat to remove backspace bugs, still some bugs with recalculating without having typed anything

* Fixed obo error with calc main loop

* Made includes more accurate in keymap for dz60

* Moved flags to user makefile
This commit is contained in:
Ajax 2018-10-23 15:44:48 -04:00 committed by Drashna Jaelre
parent c8267d9fea
commit b0a021c07a
6 changed files with 688 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

74
keyboards/dz60/keymaps/doogle999/keymap.c Normal file
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@ -0,0 +1,74 @@
#include QMK_KEYBOARD_H
#include "doogle999.h"
#define ______ KC_NO
const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
/* Base layer
* ,-----------------------------------------------------------------------------------------.
* | ESC | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 0 | - | = | Backspace |
* |-----------------------------------------------------------------------------------------+
* | Tab | Q | W | E | R | T | Y | U | I | O | P | [ | ] | \ |
* |-----------------------------------------------------------------------------------------+
* | Fn | A | S | D | F | G | H | J | K | L | ; | ' | Enter |
* |-----------------------------------------------------------------------------------------+
* | Shift | Z | X | C | V | B | N | M | , | . | Shift | U | Del |
* |-----------------------------------------------------------------------------------------+
* | Ctrl | Cmd | Alt | Space | / | Fn | L | D | R |
* `-----------------------------------------------------------------------------------------'
*/
LAYOUT_directional(
KC_ESC, KC_1, KC_2, KC_3, KC_4, KC_5, KC_6, KC_7, KC_8, KC_9, KC_0, KC_MINS, KC_EQL, ______, KC_BSPC,
KC_TAB, KC_Q, KC_W, KC_E, KC_R, KC_T, KC_Y, KC_U, KC_I, KC_O, KC_P, KC_LBRC, KC_RBRC, KC_BSLS,
MO(1), KC_A, KC_S, KC_D, KC_F, KC_G, KC_H, KC_J, KC_K, KC_L, KC_SCLN, KC_QUOT, KC_ENT,
KC_LSFT, ______, KC_Z, KC_X, KC_C, KC_V, KC_B, KC_N, KC_M, KC_COMM, KC_DOT, KC_RSFT, KC_UP, KC_DELETE,
KC_LCTL, KC_LGUI, KC_LALT, KC_SPC, KC_SPC, KC_SPC, KC_SLSH, MO(1), KC_LEFT, KC_DOWN, KC_RIGHT
),
/* Fn layer
* ,-----------------------------------------------------------------------------------------.
* | ~ | F1 | F2 | F3 | F4 | F5 | F6 | f7 | F8 | F9 | F10 | F11 | F12 | Backspace |
* |-----------------------------------------------------------------------------------------+
* | Reset | NP1 | NP2 | NP3 | NP4 | NP5 | NP6 | NP7 | NP8 | NP9 | NP0 |VolD |VolU | Mute |
* |-----------------------------------------------------------------------------------------+
* | | | | | | | | | | BlD | BlI | BlT | Menu |
* |-----------------------------------------------------------------------------------------+
* | Shift | Cyc+| Cyc-| Val+| Val-| Hue+| Hue-| Sat+| Sat-| Tog | Shift | Pup | Ins |
* |-----------------------------------------------------------------------------------------+
* | Ctrl | Cmd | Alt | Space |HwCal| |Home | Pdn | End |
* `-----------------------------------------------------------------------------------------'
*/
LAYOUT_directional(
KC_GRV, KC_F1, KC_F2, KC_F3, KC_F4, KC_F5, KC_F6, KC_F7, KC_F8, KC_F9, KC_F10, KC_F11, KC_F12, ______, KC_CALC,
RESET, KC_KP_1, KC_KP_2, KC_KP_3, KC_KP_4, KC_KP_5, KC_KP_6, KC_KP_7, KC_KP_8, KC_KP_9, KC_KP_0, KC_VOLD, KC_VOLU, KC_MUTE,
______, ______, ______, ______, ______, ______, ______, ______, ______, BL_DEC, BL_INC, BL_TOGG, KC_APP,
KC_LSFT, ______, RGB_MOD, RGB_RMOD, RGB_VAI, RGB_VAD, RGB_HUI, RGB_HUD, RGB_SAI, RGB_SAD, RGB_TOG, KC_RSFT, KC_PGUP, KC_INSERT,
KC_LCTL, KC_LGUI, KC_LALT, KC_SPC, KC_SPC, KC_SPC, TO(2), ______, KC_HOME, KC_PGDOWN, KC_END
),
/* Hardware calculator layer
* ,-----------------------------------------------------------------------------------------.
* |EndCa| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 0 | - | = | Backspace |
* |-----------------------------------------------------------------------------------------+
* | | Q | | E | | T | | | | | P | | | |
* |-----------------------------------------------------------------------------------------+
* | | | S | | | | | | | L | | | Calc |
* |-----------------------------------------------------------------------------------------+
* | Shift | | | | C | | | | | . | Shift | | |
* |-----------------------------------------------------------------------------------------+
* | | | | | / | | | | |
* `-----------------------------------------------------------------------------------------'
*/
LAYOUT_directional(
ENDCALC, KC_1, KC_2, KC_3, KC_4, KC_5, KC_6, KC_7, KC_8, KC_9, KC_0, KC_MINS, KC_EQL, ______, KC_BSPC,
______, KC_Q, ______, KC_E, ______, KC_T, ______, ______, ______, ______, KC_P, ______, ______, ______,
______, ______, KC_S, ______, ______, ______, ______, ______, ______, KC_L, ______, ______, CALC,
KC_LSFT, ______, ______, ______, KC_C, ______, ______, ______, ______, ______, KC_DOT, KC_RSFT, ______, ______,
______, ______, ______, ______, ______, ______, KC_SLSH, ______, ______, ______, ______
),
};

1
tmk_core/rules.mk
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@ -103,7 +103,6 @@ endif
CFLAGS += -Wa,-adhlns=$(@:%.o=%.lst)
CFLAGS += $(CSTANDARD)
#---------------- Compiler Options C++ ----------------
# -g*: generate debugging information
# -O*: optimization level

460
users/doogle999/doogle999.c Normal file
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@ -0,0 +1,460 @@
#include "doogle999.h"
static unsigned char inputLocation = 0; // Current index in text input
static double calc(const char input[CALC_BUFFER_SIZE +1]) // Finds value of input char array, relatively small and fast I think
{
char inputToken[CALC_BUFFER_SIZE + 1]; // Input buffer, used when a single token (generally a number) takes up more
unsigned char inputTokenLocation = 0, inputLocation = 0; // Keep track of indices
struct Token tokens[CALC_BUFFER_SIZE + 1]; // Input, converted to tokens, one extra large to accomodate for possible negative sign then open parenthesis as first character
unsigned char tokenCount = 0; // Keep track of index
bool dashAsMinus = false; // Kind of a hacky solution to determining whether to treat a dash as a minus sign or a negative sign
while(inputLocation < CALC_BUFFER_SIZE + 1)
{
char digit = input[inputLocation];
if(inputLocation == 0 && input[inputLocation] == CALC_CHAR_SUB && input[inputLocation + 1] == CALC_CHAR_BEG)
{
tokens[tokenCount].raw.num = 0;
tokens[tokenCount].isNum = true;
tokenCount++;
dashAsMinus = true;
}
if ((digit >= '0' && digit <= '9') || /* valid digit */
(inputTokenLocation != 0 && input[inputLocation] == CALC_CHAR_DEC) || /* valid floating point */
(!dashAsMinus && inputTokenLocation == 0 && input[inputLocation] == CALC_CHAR_SUB)) /* - is negative sign */
{
inputToken[inputTokenLocation] = input[inputLocation];
inputTokenLocation++;
inputLocation++;
continue;
}
if(inputTokenLocation != 0)
{
// sscanf(inputToken, "%lf", &tokens[tokenCount].raw.num); // I would like to use sscanf here, but the small version of stdio.h on the chip doesn't allow sscanf or its sister functions to be used to process floats
tokens[tokenCount].raw.num = atof(inputToken);
tokens[tokenCount].isNum = true;
for(unsigned char i = 0; i < inputTokenLocation + 1; i++)
{
inputToken[i] = '\0';
}
inputTokenLocation = 0;
tokenCount++;
dashAsMinus = true;
continue;
}
/* inputTokenLocation == 0 */
tokens[tokenCount].isNum = false;
tokens[tokenCount].raw.op.c = input[inputLocation];
tokens[tokenCount].raw.op.priority = 0;
tokens[tokenCount].raw.op.ltr = true;
dashAsMinus = false;
switch(input[inputLocation])
{
case CALC_CHAR_BEG:
break;
case CALC_CHAR_END:
dashAsMinus = true;
break;
case CALC_CHAR_ADD:
tokens[tokenCount].raw.op.priority = CALC_PRIO_ADD;
break;
case CALC_CHAR_SUB:
tokens[tokenCount].raw.op.priority = CALC_PRIO_SUB;
break;
case CALC_CHAR_MUL:
tokens[tokenCount].raw.op.priority = CALC_PRIO_MUL;
break;
case CALC_CHAR_DIV:
tokens[tokenCount].raw.op.priority = CALC_PRIO_DIV;
break;
case CALC_CHAR_EXP:
tokens[tokenCount].raw.op.priority = CALC_PRIO_EXP;
tokens[tokenCount].raw.op.ltr = false;
break;
case CALC_CHAR_SIN:
case CALC_CHAR_COS:
case CALC_CHAR_TAN:
case CALC_CHAR_ASN:
case CALC_CHAR_ACS:
case CALC_CHAR_ATN:
case CALC_CHAR_LGE:
case CALC_CHAR_LOG:
case CALC_CHAR_SQT:
break;
case CALC_CHAR_EUL:
tokens[tokenCount].isNum = true;
tokens[tokenCount].raw.num = CALC_VALU_EUL;
dashAsMinus = true;
break;
case CALC_CHAR_PI:
tokens[tokenCount].isNum = true;
tokens[tokenCount].raw.num = CALC_VALU_PI;
dashAsMinus = true;
break;
case '\0':
tokenCount--;
inputLocation = CALC_BUFFER_SIZE;
break;
default:
tokenCount--;
break;
}
tokenCount++;
inputLocation++;
}
struct Token output[CALC_BUFFER_SIZE + 1]; // Final output tokens before evaluation
struct Token opstack[CALC_BUFFER_SIZE + 1]; // Stack of operators
unsigned char outputLocation = 0, opstackLocation = 0; // Keep track of indices
unsigned char numBrackets = 0; // The number of parenthesis
for(unsigned char i = 0; i < tokenCount; i++)
{
if(tokens[i].isNum)
{
output[outputLocation] = tokens[i];
outputLocation++;
}
else if(tokens[i].raw.op.c == CALC_CHAR_BEG)
{
opstack[opstackLocation] = tokens[i];
opstackLocation++;
}
else if(tokens[i].raw.op.c == CALC_CHAR_END)
{
while(opstack[opstackLocation - 1].raw.op.c != CALC_CHAR_BEG)
{
output[outputLocation] = opstack[opstackLocation - 1];
outputLocation++;
opstackLocation--;
}
opstackLocation--;
numBrackets += 2;
}
else if(tokens[i].raw.op.priority == 0)
{
opstack[opstackLocation] = tokens[i];
opstackLocation++;
}
else
{
while(opstackLocation != 0
&& (opstack[opstackLocation - 1].raw.op.priority == 0
|| tokens[i].raw.op.priority < opstack[opstackLocation - 1].raw.op.priority
|| (tokens[i].raw.op.priority == opstack[opstackLocation - 1].raw.op.priority && opstack[opstackLocation - 1].raw.op.ltr))
&& opstack[opstackLocation - 1].raw.op.c != CALC_CHAR_BEG)
{
output[outputLocation] = opstack[opstackLocation - 1];
outputLocation++;
opstackLocation--;
}
opstack[opstackLocation] = tokens[i];
opstackLocation++;
}
}
tokenCount -= numBrackets;
for(signed char i = opstackLocation - 1; i >= 0; i--)
{
output[outputLocation] = opstack[i];
outputLocation++;
opstackLocation--;
}
double answer[CALC_BUFFER_SIZE];
unsigned char answerLocation = 0;
for(unsigned char i = 0; i < tokenCount; i++)
{
if(output[i].isNum)
{
answer[answerLocation] = output[i].raw.num;
answerLocation++;
continue;
}
if(output[i].raw.op.priority == 0)
{
if (answerLocation < 1) { /* not handled here -- ERROR? */ } else
if(answerLocation >= 1)
{
double (*op)(double);
switch(output[i].raw.op.c)
{
case CALC_CHAR_SIN:
op = sin;
break;
case CALC_CHAR_COS:
op = cos;
break;
case CALC_CHAR_TAN:
op = tan;
break;
case CALC_CHAR_ASN:
op = asin;
break;
case CALC_CHAR_ACS:
op = acos;
break;
case CALC_CHAR_ATN:
op = atan;
break;
case CALC_CHAR_LGE:
op = log;
break;
case CALC_CHAR_LOG:
op = log10;
break;
case CALC_CHAR_SQT:
op = sqrt;
break;
default:
continue; /* invalid input */
}
answer[answerLocation - 1] = op(answer[answerLocation - 1]);
}
}
/* priority != 0 */
else if(answerLocation >= 2)
{
switch(output[i].raw.op.c)
{
case CALC_CHAR_ADD:
answer[answerLocation - 2] += answer[answerLocation - 1];
break;
case CALC_CHAR_SUB:
answer[answerLocation - 2] -= answer[answerLocation - 1];
break;
case CALC_CHAR_MUL:
answer[answerLocation - 2] *= answer[answerLocation - 1];
break;
case CALC_CHAR_DIV:
answer[answerLocation - 2] /= answer[answerLocation - 1];
break;
case CALC_CHAR_EXP:
answer[answerLocation - 2] = pow(answer[answerLocation - 2], answer[answerLocation - 1]);
break;
}
answerLocation--;
}
}
return answer[0];
}
/*
* @returns 0 when nothing should happen and QMK should work as usual
* @returns -1 when invalid input was given, QMK should ignore it
* @returns -2 when BSP should be done
* @returns -3 when CALC should be done
* @returns -4 when ENDCALC should be done
* @returns positive value of CALC_* when normal input was processed
*/
static int process_input(const uint16_t keycode, const uint8_t mods, const keyevent_t event)
{
/* handle even when no key was pressed */
if(!event.pressed)
{
switch(keycode)
{
/* QMK should handle those */
case KC_RSFT:
case KC_LSFT:
return 0;
break;
}
/* ??? ignore */
return -1;
}
/* when shift key is pressed handle characters differently */
char characterPressed;
if((get_mods() & MODS_SHIFT_MASK))
{
switch(keycode)
{
case KC_9:
characterPressed = CALC_CHAR_BEG;
break;
case KC_0:
characterPressed = CALC_CHAR_END;
break;
case KC_EQUAL:
characterPressed = CALC_CHAR_ADD;
break;
case KC_KP_PLUS:
characterPressed = CALC_CHAR_ADD;
break;
case KC_6:
characterPressed = CALC_CHAR_EXP;
break;
case KC_8:
characterPressed = CALC_CHAR_MUL;
break;
case KC_KP_ASTERISK:
characterPressed = CALC_CHAR_MUL;
break;
case KC_S:
characterPressed = CALC_CHAR_ASN;
break;
case KC_C:
characterPressed = CALC_CHAR_ACS;
break;
case KC_T:
characterPressed = CALC_CHAR_ATN;
break;
case KC_L:
characterPressed = CALC_CHAR_LOG;
break;
default:
return -1;
break;
}
return characterPressed;
}
/* normal key handling: shift not pressed */
/* digits */
if (keycode == KC_KP_0 || keycode == KC_0) {
return '0';
} else if (keycode >= KC_KP_1 && keycode <= KC_KP_9) {
return keycode - KC_KP_1 +1 + '0';
} else if (keycode >= KC_1 && keycode <= KC_9) {
return keycode - KC_1 +1 + '0';
}
/* other tokens */
switch (keycode) {
case KC_MINUS:
case KC_KP_MINUS:
return characterPressed = CALC_CHAR_SUB;
case KC_SLASH:
case KC_KP_SLASH:
return characterPressed = CALC_CHAR_DIV;
case KC_S:
return characterPressed = CALC_CHAR_SIN;
case KC_C:
return characterPressed = CALC_CHAR_COS;
case KC_T:
return characterPressed = CALC_CHAR_TAN;
case KC_Q:
return characterPressed = CALC_CHAR_SQT;
case KC_L:
return characterPressed = CALC_CHAR_LGE;
case KC_DOT:
case KC_KP_DOT:
return characterPressed = CALC_CHAR_DEC;
case KC_P:
return characterPressed = CALC_CHAR_PI;
case KC_E:
return characterPressed = CALC_CHAR_EUL;
case KC_BSPC:
return -2;
case KC_RSFT:
return 0;
case KC_LSFT:
return 0;
case CALC:
return -3;
case ENDCALC:
return -4;
default:
return -1;
}
}
bool process_record_user(uint16_t keycode, keyrecord_t* record)
{
static char text[CALC_BUFFER_SIZE + 1]; // Used to store input and then output when ready to print
static char backspaceText[CALC_BUFFER_SIZE + 1]; // Pretty dumb waste of memory because only backspace characters, used with send_string to backspace and remove input
if((biton32(layer_state) == CALC_LAYER && CALC_FORCE_NUM_LOCK_INSIDE_CALC) || (biton32(layer_state) != CALC_LAYER && CALC_FORCE_NUM_LOCK_OUTSIDE_CALC))
{
bool numpadKeyPressed = record->event.pressed &&
!(get_mods() & MODS_SHIFT_MASK) &&
/* KC_KP_1, KC_KP_2, ..., KC_KP_0, KC_KP_DOT */
(keycode >= KC_KP_1 && keycode <= KC_KP_DOT);
if(numpadKeyPressed && !(host_keyboard_leds() & (1 << USB_LED_NUM_LOCK)))
{
add_key(KC_NLCK);
send_keyboard_report();
del_key(KC_NLCK);
}
}
if(biton32(layer_state) != CALC_LAYER) { return true; }
int action = process_input(keycode, get_mods(), record->event);
switch(action)
{
case 0:
return true;
case -1:
return false;
case -2:
if(inputLocation > 0)
{
inputLocation--;
text[inputLocation] = '\0';
backspaceText[0] = (char)8;
backspaceText[1] = '\0';
send_string(backspaceText);
}
return false;
case -3:
for(int i = 0; i < inputLocation; i++)
{
backspaceText[i] = (char)8;
}
send_string(backspaceText);
dtostrf(calc(text), CALC_PRINT_SIZE, CALC_PRINT_SIZE, text);
send_string(text);
for(unsigned char i = 0; i < CALC_BUFFER_SIZE; i++)
{
text[i] = '\0';
backspaceText[i] = '\0';
}
inputLocation = 0;
return false;
case -4:
for(unsigned char i = 0; i < CALC_BUFFER_SIZE; i++)
{
text[i] = '\0';
backspaceText[i] = '\0';
}
inputLocation = 0;
layer_off(CALC_LAYER);
return false;
default:
break;
}
char characterPressed = (char)action;
if(inputLocation < CALC_BUFFER_SIZE)
{
text[inputLocation] = characterPressed;
inputLocation++;
char characterToSend[2];
characterToSend[0] = characterPressed;
characterToSend[1] = '\0';
send_string(characterToSend);
}
return false;
}

99
users/doogle999/doogle999.h Normal file
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@ -0,0 +1,99 @@
#ifndef USERSPACE
#define USERSPACE
#include "quantum.h"
#define NO_ACTION_ONESHOT
#define NO_ACTION_MACRO
#define MODS_SHIFT_MASK (MOD_BIT(KC_LSHIFT)|MOD_BIT(KC_RSHIFT))
// Layer the calculator is on
#define CALC_LAYER 2
// Inside is whether when you are in calc mode it should automatically force numlock, outside is whether it should do it outside of calculator mode
#define CALC_FORCE_NUM_LOCK_INSIDE_CALC true
#define CALC_FORCE_NUM_LOCK_OUTSIDE_CALC true
// Maximum number of characters the calculator can have
#define CALC_BUFFER_SIZE 32
// Minimum width of the printed text / the number of decimal places
#define CALC_PRINT_SIZE 6
/*-----
Special
-----*/
#define CALC_CHAR_BEG '('
#define CALC_CHAR_END ')'
#define CALC_CHAR_DEC '.'
/*-----
Operators - Can add more here such as modulo %, factorial !
-----*/
#define CALC_CHAR_ADD '+'
#define CALC_PRIO_ADD 1
#define CALC_CHAR_SUB '-'
#define CALC_PRIO_SUB 1
#define CALC_CHAR_MUL '*'
#define CALC_PRIO_MUL 2
#define CALC_CHAR_DIV '/'
#define CALC_PRIO_DIV 2
#define CALC_CHAR_EXP '^'
#define CALC_PRIO_EXP 3
/*-----
Functions
-----*/
#define CALC_CHAR_SIN 's'
#define CALC_CHAR_COS 'c'
#define CALC_CHAR_TAN 't'
#define CALC_CHAR_ASN 'S'
#define CALC_CHAR_ACS 'C'
#define CALC_CHAR_ATN 'T'
#define CALC_CHAR_LGE 'l'
#define CALC_CHAR_LOG 'L'
#define CALC_CHAR_SQT 'q'
/*-----
Constants
-----*/
#define CALC_CHAR_EUL 'e'
#define CALC_VALU_EUL 2.71828182845904523536
#define CALC_CHAR_PI 'p'
#define CALC_VALU_PI 3.14159265358979323846
struct OP // Operator/function
{
char c;
unsigned char priority;
bool ltr;
};
union TokenRaw // A token after the input has been processed, can either be a number or an operator/function
{
double num;
struct OP op;
};
struct Token // Encapsulator
{
bool isNum;
union TokenRaw raw;
};
enum CalcFunctions // Hardware calculator key functionality
{
CALC = SAFE_RANGE,
ENDCALC
};
#endif

41
users/doogle999/readme.md Normal file
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@ -0,0 +1,41 @@
Copyright 2018 <name> <email> @doogle999
Overview
========
This folder is just for some calculator code for my keyboards.
Making Your Keyboard Into A Calculator
--------------------------------------
If you'd like to make your keyboard into a calculator, you can do it with this userspace (hopefully!)
You can make a keymap for your keyboard of choice named doogle999 and then you can make it regularly.
You should make one layer that is just the functionality for your calculator, so it just has the keys you need (numbers, symbols, some letters for functions). It should also have END_CALC and CALC somewhere. END_CALC gets you out of calculator mode, and CALC evaluates the calculation.
On one of your other keymaps you should make a key that is TO(layer of calculator). This is how you will activate the calculator. You should also define the layer your calculator is on with the define CALC_LAYER in doogle999.h (this means that for all your keyboards, your calculator layer has to be the same layer).
You can change what characters coorespond to what operators and functions and you can add more functions in doogle999.h and doogle999.c, you can also change which characters are sued for which keys. However, as of now standard keys should be used for operations. By that I mean if you want your multiplication sign to be an x, you should change the CALC_CHAR_MUL to an x but you should keep your multiplication keycode on the keymap either as KC_8 (shifted) or KC_KP_ASTERISK. This might be changed in the future so there are custom keycodes so this is less of a pain and more intuitive.
You can look at my dz60 keymap doogle999 for an example.
Issues
------
Unfortunately the chip onboard my dz60 only does single precision floating point numbers, but I have everything set up as double so if your chip supports doubles it should work for you.
This Was Here When I Made The ReadMe
------------------------------------
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 2 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 <http://www.gnu.org/licenses/>.

14
users/doogle999/rules.mk Normal file
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@ -0,0 +1,14 @@
SRC += doogle999.c
CFLAGS += -fstrict-aliasing -ftree-vrp
BOOTMAGIC_ENABLE = no # Virtual DIP switch configuration(+1000)
MOUSEKEY_ENABLE = no # Mouse keys(+4700)
EXTRAKEY_ENABLE = yes # Audio control and System control(+450)
CONSOLE_ENABLE = no # Console for debug(+400)
COMMAND_ENABLE = no # Commands for debug and configuration
SLEEP_LED_ENABLE = no # Breathing sleep LED during USB suspend
NKRO_ENABLE = yes # USB Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
BACKLIGHT_ENABLE = yes # Enable keyboard backlight functionality
AUDIO_ENABLE = no
RGBLIGHT_ENABLE = yes