HP 20b RPN Calculator. By Jayne (Jay) Shim & SonYon (Sonny) Song

Transcription

1 HP 20b RPN Calculator By Jayne (Jay) Shim & SonYon (Sonny) Song

2

3 ?

4 ICE JTAG SCAN Charge Pump ARM7TDMI Processor JTAGSEL System Controller 2 MHz RCOSC TST IRQ0-IRQ1 PIO FIQ AIC VDDLCD 1.8 V Voltage Regulator VDDIO1 GND VDDOUT XIN XOUT VDDIO2 VDDCORE CLKIN PLLRC CAPP1 CAPM1 CAPP2 CAPM2 VDDINLCD VDD3V6 LCD Voltage Regulator PCK0-PCK2 VDDIO2 Memory Controller PLL PMC SRAM OSC Embedded Flash Controller Address Decoder 32k RCOSC Abort Status Misalignment Detection VDDIO1 BOD VDDIO1 POR 2 Kbytes( Back-up) 4 Kbytes (Core) VDDCORE Flash ERASE 64/128 Kbytes Supply Controller Peripheral Bridge NRST ROM (12 Kbytes) Peripheral Data Controller 11 Channels NRSTB Fast Flash Programming Interface FWUP VDDIO1 APB PGMRDY PGMNVALID PGMNOE PGMCK PGMM0-PGMM3 PGMD0-PGMD15 PGMNCMD PGMEN0-PGMEN2 SAM-BA RTC PIT DRXD DTXD PIO WDT DBGU PWM0 PWM1 PWM2 PWM3 TCLK0 TCLK1 TCLK2 TIOA0 TIOB0 TIOA1 TIOB1 TIOA2 TIOB2 PWMC PDC PDC Timer Counter PIOA (26 IOs) TC0 PIOB (24 IOs) TC1 PDC SEG00-SEG39 COM0-COM9 LCD Controller TWI PDC PDC SPI RXD0 TXD0 SCK0 RTS0 CTS0 RXD1 TXD1 SCK1 RTS1 CTS1 DCD1 DSR1 DTR1 RI1 PDC USART0 PDC PDC PDC PDC ADC USART1 PIO TC2 PIOC (30 IOs) PIO THE PROCESSOR TDI TDO TMS TCK TWD TWCK NPCS0 NPCS1 NPCS2 NPCS3 MISO MOSI SPCK ADTRG AD0 AD1 AD2 AD3 ADVREF PDC

5 Liquid Crystal Display (LCD)

6 The Keyboard Keyboard Matrix Keyboard connected to processor

7

8 12 x 3 = = 4 ERROR

9 12 x 3 = ENTER 1 2. ENTER INPUT 12

10 12 x 3 = Enter

11 12 x 3 = MULT 36 36

12 What about... a complex expression?!

13 ((2 + 3) 5) 6 1. Enter 2 2. INPUT 2 2

14 ((2 + 3) 5) 6 3. Enter

15 ((2 + 3) 5) 6 4. ADD + 5 5

16 ((2 + 3) 5) 6 5. Enter

17 ((2 + 3) 5) 6 6. MULT 25 25

18 ((2 + 3) 5) 6 7. Enter

19 ((2 + 3) 5) 6 8. MULT

20

21 ERROR: EMPTY STACK 1. MULT Empty Stack

22 OTHER USEFUL KEYS

23 Backspace ( ) 7 Press Backspace 0

24 Sign (+ ) 7 Press Sign + -7

25 Getting Started: Hello World #include "AT91SAM7L128.h #include "lcd.h" int main() { int number = 999 ; int digit; int lcdindex = 11; / lcd_init(); if (number > number < ) { lcd_put_char7('o', 0); lcd_put_char7('v', 1); lcd_put_char7('e', 2); lcd_put_char7('r', 3); lcd_put_char7('f', 4); lcd_put_char7('l', 5); lcd_put_char7('o', 6); lcd_put_char7('w', 7);

26 Getting Started: Hello World else { if (number > 0) { while (number > 0) { digit = number % 10; number = number / 10; lcd_put_char7(digit+48, lcdindex); lcdindex--; else if (number == 0) { lcd_put_char7(48, lcdindex); else if (number <0) { while (number < 0) { digit = number % 10; digit = digit*-1; number = number / 10; lcd_put_char7(digit+48, lcdindex); lcdindex--; if (number == 0) { lcd_put_char7(45, 0); return 0;

27 Listening to the Keyboard const char keyboard_layout [7][6] = {{'N', 'I', 'P', 'M', 'F', 'A', {'C', 'R', 'N', 'B', '%', 'L', {'T', '(', ')', 'G', '<', '_', {'U', '7', '8', '9', '/', '_', {'D', '4', '5', '6', '*', '_', {'S', '1', '2', '3', '-', '_', {'O', '0', '.', '=', '+', '_';

28 Listening to the Keyboard char keyboard_key() { int column; int row; char button; for (column = 0; column <= COLUMN; column++) { keyboard_column_low(column); for (row = 0; row <= ROW; row++) { if(!keyboard_row_read(row)) { keyboard_column_high(column); button = keyboard_layout[column][row]; return button; keyboard_column_high(column); return 0;

29 Listening to the Keyboard int main() { for (;;) { char key = keyboard_key(); if (key!= 0) { for(j = 0; j < 14; j++) { lcd_put_char7(' ',j); lcd_put_char7(key,11); else { lcd_print7("no key pressed"); return 0;

30 Entering and Displaying Numbers void keyboard_get_entry(struct entry *result) { int input = 0; int counter = 0; int sign = 1; for (;;) { int c = keyboard_key(); if (c <= '9' && c >= '0') { input = input * 10 + (c - '0'); counter++; else if (c == '~') { sign *= -1; else if (c == '\b') { input /= 10; if(input == 0) lcd_put_char7(' ', 11); else if (c!= -1){ result->operation = c; break;

31 Entering and Displaying Numbers while (c!= -1) { c = keyboard_key(); if (input!= 0) lcd_print_int_neg(sign == -1, input); if (counter == 0) { result->number = INT_MAX; else { result->number = sign*input;

32 Entering and Displaying Numbers int main() { struct entry entry; *AT91C_WDTC_WDMR = AT91C_WDTC_WDDIS; lcd_init(); keyboard_init(); lcd_print7("press"); while (1) { keyboard_get_entry(&entry); if (entry.operation!= 0 && entry.number! =INT_MAX) { lcd_print_int(entry.number); lcd_put_char7(entry.operation, 0); entry.operation = 0; return 0;

33 An RPN Calculator void calculate(char operation, int index, int *stack) { if (index < 0) { lcd_print7("error"); else { int n1 = stack[index]; int n2 = stack[index+1]; switch (operation) { case '+': stack[index] = n1 + n2; break; case '-': stack[index] = n1 - n2; break; case '*': stack[index] = n1 * n2; break; case '/': stack[index] = n1 / n2; break; stack[index+1] = 0; lcd_print_int (stack[index]);

34 An RPN Calculator int main(){ int stack [50]; int index = 0; while (1) { keyboard_get_entry(&entry); if (entry.operation!= 0 && entry.number!=int_max) { stack[index] = entry.number; lcd_print_int(entry.number); if (entry.operation == '\r') { index++; else if (entry.operation == '+' entry.operation == '-' entry.operation == '*' entry.operation == '/') { index--; calculate(entry.operation, index, stack); index++; else if (entry.operation == '+' entry.operation == '-' entry.operation == '*' entry.operation == '/') { if (index >= 2) { index = index - 2; calculate(entry.operation, index, stack); index++; else { lcd_print7("error");