(r10) ForthCalculator < MecrispCube

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---+ Forth Calculator

   * https://hackaday.io/contest/195949-2024-business-card-contest
   * https://hackaday.com/2024/05/07/the-2024-business-card-challenge-starts-now/
   * roughly 3.5 in (90 mm) by 2 in (50 mm).

Rows are input ports with pull up resistors and interrupts, columns are open drain output ports.
<verbatim>
    C0       C1       C2       C3       C4
+--------+--------+--------+--------+--------+
| Pi     | 1/x    | x^2    | LOG    | LN     |
|        | y^x    | SQRT   | 10^x   | e^x    |  R0
| A      | B      | C      | D      | E      |
| 0x20   | 0x21 ! | 0x22 " | 0x23 # | 0x24 $ |
+--------+--------+--------+--------+--------+
| STOx   | RCLx   | SIN    | COS    | TAN    |
| CEIL   | FLOOR  | ASIN   | ACOS   | ATAN   |  R1
|        |        | SL     | SR     | F      |
| 0x25 % | 0x26 & | 0x27 ' | 0x28 ( | 0x29 ) |
+--------+--------+--------+--------+--------+
| ENTER  | SWAP   | NEG    | EXP    | BS     |
| DROP   | ROT    | ABS    | F>S    | CLx    |  R2
|        |        |        | S>F    |        |
| 0x2A * | 0x2B + | 0x2C , | 0x2D _ | 0x2E . |
+--------+--------+--------+--------+--------+
| CLOCK  | 7      | 8      | 9      | /      |
|        | FLOAT  | DEC    | HEX    | BIN    |  R3
|        |        |        |        |        |
| 0x2F / | 0x30 0 | 0x31 1 | 0x32 2 | 0x33 3 |
+--------+--------+--------+--------+--------+
| CALC   | 4      | 5      | 6      | *      |
|        | FIX    | ENG    | SCI    | PREC   |  R4
|        |        |        |        |        |
| 0x34 4 | 0x35 5 | 0x36 6 | 0x37 7 | 0x38 8 |
+--------+--------+--------+--------+--------+
| f      | 1      | 2      | 3      | -      |
|        | p      | n      | u      | m      |  R5
|        | XOR    | AND    | NOT    | OR     |
| 0x39 9 | 0x3A : | 0x3B ; | 0x3C < | 0x3D = |
+--------+--------+--------+--------+--------+
| ON/OFF | 0      | .      |        | +      |
|        | k      | M      | G      | T      |  R6
|        | 1'S    | 2'S    | UNSGN  |        |
| 0x3E > | 0x3F ? | 0x40 @ | 0x41 A | 0x42 B |
+--------+--------+--------+--------+--------+
</verbatim>


|*Description*|*Dongle*|*Function* | *Calculator* | *JTAG 10pin*|
| GND         | CN1.1  | GND       | GND          | 3, 5, 9     |
| NRST        | CN1.2  | RES       | RST          | 10          |
| PA13        | CN1.3  | SWDIO     | -            | 2           |
| PA14        | CN1.4  | SWDCLK    | -            | 4           |
| PB3         | CN1.5  | SWO       | ROW0         |             |
| 3V3         | CN1.6  | 3V3       | 3V3          | 1           |
| PB2         | CN1.7  |           | ROW1         |             |
| PA5         | CN1.8  | D13       | COL4         |             |
| PA6         | CN1.9  | D12       | ROW2         |             |
| PA7         | CN1.10 | D11       | ROW3         |             |
| PB8         | CN2.1  | D15 SCL   | SCL Display  |             |
| PB9         | CN2.2  | D14 SDA   | SDA Display  |             |
| PA0         | CN2.3  | A3        | COL0         |             |
| PA2         | CN2.4  | D1        | COL2         |             |
| PA3         | CN2.5  | D0        | COL3         |             |
| PB6         | CN2.6  | UARTRX    | ROW4         |             |
| PA9         | CN2.7  | D9        | ROW5         |             |
| PA8         | CN2.8  | D6        | ROW6         |             |
| GND         | CN2.9  | GND       | GND          |             |
| PA1         | CN2.10 | A2        | COL1         |             |

|*Description*|*Dongle*|*Function* | *Calculator* | 
| !USB5V      |        | 5V        | 5V CHARGE    | 
| PH3         |        | BOOT0     | BOOT0        |
| PA10        | SW1    |           |              |
| PB5         | LD1    |           |              |
| PB0         | LD2    |           |              |
| PA4         | LD3    |           |              | 
| PB7         | SB6    | UARTTX    |              | 
| PB0         | AT2    | AT2       |              | 
| PB1         | AT3    | AT3       |              |

---+ BOM

   * Perfboard square grid of 0.1 inches, pads on both sides (plate-through holes), 2" x 3.5", $3
   * SBC
      * !STM32WB55 Dongle, part of P-NUCLEO-WB55, !DigiKey 497-18384-ND
      * !STM32F405
   * OLED display 
      * 128x32 pixels if it should fit into 2" x 3.5"
      * 128x64 pixels, [[https://www.adafruit.com/product/4650][Adafruit FeatherWing OLED - 128x64 OLED]]
   * 35 pcs push buttons, fit in 0.4" grid
      * Würth 430473035826, !DigiKey #732-7021-1-ND, [[https://www.we-online.com/components/products/datasheet/430473035826.pdf][data sheet]], $0.5
      * TE Connectivity ALCOSWITCH Switches 1825910-6, $0.15
      * C&K PTS 647 SN50 SMTR2 LFS, !DigiKey #PTS647SN50SMTR2LFSCT-ND, smaller 4.5 x 4.5 mm, $0.2
   * Wires
   * USB Connector e.g. 
      * Adafruit [[https://www.adafruit.com/product/1833][USB Micro-B Breakout Board]], !DigiKey 1528-1383-ND, from $1 up
      * Adafruit [[https://www.adafruit.com/product/1904][Micro-Lipo Charger]] for LiPo/LiIon Batt w/MicroUSB Jack, $7
      * Adafruit [[https://www.adafruit.com/product/4410][Micro-Lipo Charger]] for LiPo/LiIon Batt w/USB Type C Jack, $7
   * I2C Connector
      

-- %USERSIG{PeterSchmid - 2024-05-24}%

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Topic revision: r10 - 2024-05-28 - PeterSchmid