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sherlock 2025-10-29 12:25:39 +05:30
parent 085c1023a6
commit 6a914a6eaa
1 changed files with 93 additions and 86 deletions
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179
ES/Project/code.c
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@ -53,8 +53,8 @@
// 7-Segment patterns // 7-Segment patterns
const unsigned char seven_seg[16] = { const unsigned char seven_seg[16] = {
0x3F,0x06,0x5B,0x4F,0x66,0x6D,0x7D,0x07, 0x3F, 0x06, 0x5B, 0x4F, 0x66, 0x6D, 0x7D, 0x07,
0x7F,0x6F,0x77,0x7C,0x39,0x5E,0x79,0x71 0x7F, 0x6F, 0x77, 0x7C, 0x39, 0x5E, 0x79, 0x71
}; };
// Keypad defines // Keypad defines
@ -65,16 +65,16 @@ const unsigned char seven_seg[16] = {
// 7-Segment defines // 7-Segment defines
#define SEG_SHIFT 4 #define SEG_SHIFT 4
#define DIGIT_EN (1<<23) #define DIGIT_EN (1 << 23)
// LCD defines // LCD defines
#define LCD_DATA_SHIFT 23 #define LCD_DATA_SHIFT 23
#define LCD_DATA_MASK (0x0F << LCD_DATA_SHIFT) #define LCD_DATA_MASK (0x0F << LCD_DATA_SHIFT)
#define LCD_RS (1<<27) #define LCD_RS (1 << 27)
#define LCD_EN (1<<28) #define LCD_EN (1 << 28)
// Mode button defines // Mode button defines
#define MODE_BUTTON (1<<12) #define MODE_BUTTON (1 << 12)
// Calculator states // Calculator states
#define MODE_BIN 2 #define MODE_BIN 2
@ -94,17 +94,28 @@ int result = 0;
unsigned int current_base = MODE_DEC; unsigned int current_base = MODE_DEC;
unsigned int operation = OP_NONE; unsigned int operation = OP_NONE;
unsigned char result_displayed = 0; unsigned char result_displayed = 0;
unsigned int key = 0xFF;
unsigned int last_key = 0xFF;
unsigned int stable = 0;
unsigned int mode_held = 0;
unsigned int mode_press_counter = 0;
unsigned int key_pressed_with_mode = 0;
unsigned int mode_current = 0;
int is_operator_key = 0;
int operator_mode = 0;
unsigned int seg_pattern = 0;
void delay(volatile unsigned int d){ void delay(volatile unsigned int d) {
while(d--) __NOP(); while(d--)
__NOP();
} }
void lcd_delay(unsigned long r){ void lcd_delay(unsigned long r) {
unsigned long i; unsigned long i;
for(i=0; i<r; i++); for(i = 0; i < r; i++);
} }
void lcd_write_nibble(unsigned char nibble, unsigned char is_data){ void lcd_write_nibble(unsigned char nibble, unsigned char is_data) {
unsigned long temp; unsigned long temp;
temp = (nibble & 0x0F) << LCD_DATA_SHIFT; temp = (nibble & 0x0F) << LCD_DATA_SHIFT;
LPC_GPIO0->FIOPIN = (LPC_GPIO0->FIOPIN & ~LCD_DATA_MASK) | temp; LPC_GPIO0->FIOPIN = (LPC_GPIO0->FIOPIN & ~LCD_DATA_MASK) | temp;
@ -120,17 +131,17 @@ void lcd_write_nibble(unsigned char nibble, unsigned char is_data){
lcd_delay(500000); lcd_delay(500000);
} }
void lcd_cmd(unsigned char cmd){ void lcd_cmd(unsigned char cmd) {
lcd_write_nibble(cmd >> 4, 0); lcd_write_nibble(cmd >> 4, 0);
lcd_write_nibble(cmd, 0); lcd_write_nibble(cmd, 0);
} }
void lcd_data(unsigned char data){ void lcd_data(unsigned char data) {
lcd_write_nibble(data >> 4, 1); lcd_write_nibble(data >> 4, 1);
lcd_write_nibble(data, 1); lcd_write_nibble(data, 1);
} }
void lcd_init(void){ void lcd_init(void) {
lcd_delay(5000000); lcd_delay(5000000);
lcd_write_nibble(0x03, 0); lcd_write_nibble(0x03, 0);
lcd_delay(500000); lcd_delay(500000);
@ -148,23 +159,23 @@ void lcd_init(void){
lcd_cmd(0x06); lcd_cmd(0x06);
} }
void lcd_print_str(const char* str){ void lcd_print_str(const char* str) {
while(*str){ while(*str) {
lcd_data(*str++); lcd_data(*str++);
} }
} }
void lcd_print_num(int num, unsigned int base){ void lcd_print_num(int num, unsigned int base) {
char buffer[17]; char buffer[17];
int i = 0; int i = 0;
if(base != MODE_DEC){ if(base != MODE_DEC) {
unsigned int unum = (unsigned int)num; unsigned int unum = (unsigned int)num;
if(unum == 0){ if(unum == 0) {
lcd_data('0'); lcd_data('0');
return; return;
} }
while(unum > 0 && i < 16){ while(unum > 0 && i < 16) {
unsigned int digit = unum % base; unsigned int digit = unum % base;
if(digit < 10) if(digit < 10)
buffer[i++] = '0' + digit; buffer[i++] = '0' + digit;
@ -173,28 +184,28 @@ void lcd_print_num(int num, unsigned int base){
unum = unum / base; unum = unum / base;
} }
} else { } else {
if(num < 0){ if(num < 0) {
lcd_data('-'); lcd_data('-');
num = -num; num = -num;
} }
if(num == 0){ if(num == 0) {
lcd_data('0'); lcd_data('0');
return; return;
} }
while(num > 0 && i < 16){ while(num > 0 && i < 16) {
buffer[i++] = '0' + (num % 10); buffer[i++] = '0' + (num % 10);
num = num / 10; num = num / 10;
} }
} }
while(i > 0){ while(i > 0) {
lcd_data(buffer[--i]); lcd_data(buffer[--i]);
} }
} }
void display_mode(void){ void display_mode(void) {
lcd_cmd(0x80); lcd_cmd(0x80);
lcd_print_str("Mode: "); lcd_print_str("Mode: ");
if(current_base == MODE_BIN) if(current_base == MODE_BIN)
@ -207,27 +218,28 @@ void display_mode(void){
lcd_print_str("HEX "); lcd_print_str("HEX ");
} }
void display_status(void){ void display_status(void) {
lcd_cmd(0xC0); lcd_cmd(0xC0);
if(operation != OP_NONE){ if(operation != OP_NONE) {
// Show operation pending // Show operation pending
lcd_print_str("Op:"); lcd_print_str("Op:");
if(operation == OP_ADD) lcd_data('+'); if(operation == OP_ADD)
else if(operation == OP_SUB) lcd_data('-'); lcd_data('+');
else if(operation == OP_MUL) lcd_data('*'); else if(operation == OP_SUB)
lcd_data('-');
else if(operation == OP_MUL)
lcd_data('*');
lcd_print_str(" Val:"); lcd_print_str(" Val:");
lcd_print_num(stored_num, current_base); lcd_print_num(stored_num, current_base);
lcd_print_str(" "); lcd_print_str(" ");
} } else if(result_displayed) {
else if(result_displayed){
// Show result // Show result
lcd_print_str("Res: "); lcd_print_str("Res: ");
lcd_print_num(result, current_base); lcd_print_num(result, current_base);
lcd_print_str(" "); lcd_print_str(" ");
} } else {
else {
// Show current input // Show current input
lcd_print_str("Inp: "); lcd_print_str("Inp: ");
lcd_print_num(input_num, current_base); lcd_print_num(input_num, current_base);
@ -235,22 +247,22 @@ void display_status(void){
} }
} }
unsigned int scan_keypad(void){ unsigned int scan_keypad(void) {
unsigned int col, row; unsigned int col, row;
unsigned int row_bits; unsigned int row_bits;
for(col=0; col<4; col++){ for(col = 0; col < 4; col++) {
LPC_GPIO0->FIOSET = COL_MASK; LPC_GPIO0->FIOSET = COL_MASK;
delay(50); delay(50);
LPC_GPIO0->FIOCLR = (1 << (COL_BASE + col)); LPC_GPIO0->FIOCLR = (1 << (COL_BASE + col));
delay(200); delay(200);
row_bits = (LPC_GPIO0->FIOPIN & ROW_MASK) >> ROW_BASE; row_bits = (LPC_GPIO0->FIOPIN & ROW_MASK) >> ROW_BASE;
if(row_bits != 0x0F){ if(row_bits != 0x0F) {
for(row=0; row<4; row++){ for(row = 0; row < 4; row++) {
if((row_bits & (1<<row)) == 0){ if((row_bits & (1 << row)) == 0) {
LPC_GPIO0->FIOSET = COL_MASK; LPC_GPIO0->FIOSET = COL_MASK;
return col*4 + row; return col * 4 + row;
} }
} }
} }
@ -259,19 +271,23 @@ unsigned int scan_keypad(void){
return 0xFF; return 0xFF;
} }
unsigned int is_mode_button_pressed(void){ unsigned int is_mode_button_pressed(void) {
return ((LPC_GPIO2->FIOPIN & MODE_BUTTON) == 0) ? 1 : 0; return ((LPC_GPIO2->FIOPIN & MODE_BUTTON) == 0) ? 1 : 0;
} }
unsigned int is_valid_digit(unsigned int key){ unsigned int is_valid_digit(unsigned int key) {
if(key >= 16) return 0; if(key >= 16)
if(current_base == MODE_BIN && key >= 2) return 0; return 0;
if(current_base == MODE_OCT && key >= 8) return 0; if(current_base == MODE_BIN && key >= 2)
if(current_base == MODE_DEC && key >= 10) return 0; return 0;
if(current_base == MODE_OCT && key >= 8)
return 0;
if(current_base == MODE_DEC && key >= 10)
return 0;
return 1; return 1;
} }
void change_mode(void){ void change_mode(void) {
if(current_base == MODE_DEC) if(current_base == MODE_DEC)
current_base = MODE_BIN; current_base = MODE_BIN;
else if(current_base == MODE_BIN) else if(current_base == MODE_BIN)
@ -291,13 +307,7 @@ void change_mode(void){
display_status(); display_status();
} }
int main(void){ int main(void) {
unsigned int key, last_key = 0xFF;
unsigned int stable = 0;
unsigned int mode_held = 0;
unsigned int mode_press_counter = 0;
unsigned int key_pressed_with_mode = 0;
// Configure pins // Configure pins
LPC_PINCON->PINSEL0 = 0; LPC_PINCON->PINSEL0 = 0;
LPC_PINCON->PINSEL1 = 0; LPC_PINCON->PINSEL1 = 0;
@ -323,28 +333,30 @@ int main(void){
display_mode(); display_mode();
display_status(); display_status();
for(;;){ for(;;) {
// Check if MODE button is currently pressed // Check if MODE button is currently pressed
unsigned int mode_current = is_mode_button_pressed(); mode_current = is_mode_button_pressed();
// Scan keypad // Scan keypad
key = scan_keypad(); key = scan_keypad();
// Debounce keypad // Debounce keypad
if(key == last_key){ if(key == last_key) {
if(stable < 5) stable++; if(stable < 5)
stable++;
} else { } else {
last_key = key; last_key = key;
stable = 0; stable = 0;
} }
// Track MODE button hold // Track MODE button hold
if(mode_current){ if(mode_current) {
mode_press_counter++; mode_press_counter++;
mode_held = 1; mode_held = 1;
} else { } else {
// MODE button released // MODE button released
if(mode_held && !key_pressed_with_mode && mode_press_counter < 50){ if(mode_held && !key_pressed_with_mode &&
mode_press_counter < 50) {
// Short press without key combo = change mode // Short press without key combo = change mode
change_mode(); change_mode();
} }
@ -354,47 +366,44 @@ int main(void){
} }
// Handle keypad input // Handle keypad input
if(stable == 3 && key != 0xFF){ if(stable == 3 && key != 0xFF) {
// Key pressed and stable // Key pressed and stable
// Check if this is an operator key (A-E) // Check if this is an operator key (A-E)
int is_operator_key = (key >= 10 && key <= 14); is_operator_key = (key >= 10 && key <= 14);
// In HEX mode, operators require MODE button // In HEX mode, operators require MODE button
// In other modes, operator keys work directly // In other modes, operator keys work directly
int operator_mode = 0; operator_mode = 0;
if(current_base == MODE_HEX){ if(current_base == MODE_HEX) {
operator_mode = (mode_held && is_operator_key); operator_mode = (mode_held && is_operator_key);
} else { } else {
operator_mode = is_operator_key; operator_mode = is_operator_key;
} }
if(operator_mode){ if(operator_mode) {
// OPERATOR INPUT // OPERATOR INPUT
key_pressed_with_mode = 1; key_pressed_with_mode = 1;
if(key == 10){ // A = Addition if(key == 10) { // A = Addition
stored_num = input_num; stored_num = input_num;
operation = OP_ADD; operation = OP_ADD;
input_num = 0; input_num = 0;
result_displayed = 0; result_displayed = 0;
display_status(); display_status();
} } else if(key == 11) { // B = Subtraction
else if(key == 11){ // B = Subtraction
stored_num = input_num; stored_num = input_num;
operation = OP_SUB; operation = OP_SUB;
input_num = 0; input_num = 0;
result_displayed = 0; result_displayed = 0;
display_status(); display_status();
} } else if(key == 12) { // C = Multiplication
else if(key == 12){ // C = Multiplication
stored_num = input_num; stored_num = input_num;
operation = OP_MUL; operation = OP_MUL;
input_num = 0; input_num = 0;
result_displayed = 0; result_displayed = 0;
display_status(); display_status();
} } else if(key == 13) { // D = Equals
else if(key == 13){ // D = Equals
if(operation == OP_ADD) if(operation == OP_ADD)
result = stored_num + input_num; result = stored_num + input_num;
else if(operation == OP_SUB) else if(operation == OP_SUB)
@ -408,8 +417,7 @@ int main(void){
operation = OP_NONE; operation = OP_NONE;
result_displayed = 1; result_displayed = 1;
display_status(); display_status();
} } else if(key == 14) { // E = Clear
else if(key == 14){ // E = Clear
input_num = 0; input_num = 0;
stored_num = 0; stored_num = 0;
operation = OP_NONE; operation = OP_NONE;
@ -417,14 +425,15 @@ int main(void){
result_displayed = 0; result_displayed = 0;
display_status(); display_status();
} }
} } else {
else {
// DIGIT INPUT MODE // DIGIT INPUT MODE
if(is_valid_digit(key)){ if(is_valid_digit(key)) {
result_displayed = 0; result_displayed = 0;
input_num = input_num * current_base + key; input_num = input_num * current_base + key;
if(input_num > 32767) input_num = input_num % 32768; if(input_num > 32767)
if(input_num < -32768) input_num = -32768; input_num = input_num % 32768;
if(input_num < -32768)
input_num = -32768;
display_status(); display_status();
} }
} }
@ -433,18 +442,14 @@ int main(void){
} }
// ===== STATE MACHINE DISPLAY ON 7-SEGMENT ===== // ===== STATE MACHINE DISPLAY ON 7-SEGMENT =====
unsigned int seg_pattern;
if(operation == OP_NONE && result_displayed == 0) { if(operation == OP_NONE && result_displayed == 0) {
seg_pattern = 0x06; // Display '1' seg_pattern = 0x06; // Display '1'
} } else if(operation != OP_NONE) {
else if(operation != OP_NONE) {
seg_pattern = 0x5B | 0x80; // Display '2' with DP seg_pattern = 0x5B | 0x80; // Display '2' with DP
} } else if(result_displayed == 1) {
else if(result_displayed == 1) {
seg_pattern = 0x4F | 0x80; // Display '3' with DP seg_pattern = 0x4F | 0x80; // Display '3' with DP
} } else {
else {
seg_pattern = 0x3F; // Display '0' seg_pattern = 0x3F; // Display '0'
} }
@ -455,4 +460,6 @@ int main(void){
delay(3000); delay(3000);
} }
return 0;
} }