diff --git a/ES/Lab/LAB5/Questions.md b/ES/Lab/LAB5/Questions.md deleted file mode 100644 index 539bcf5..0000000 --- a/ES/Lab/LAB5/Questions.md +++ /dev/null @@ -1,3 +0,0 @@ -1. Sort using insertion sort -2. [Factorial using recursion](https://git.aadit.cc/aadit/MIT-Curricular/src/branch/main/ES/Lab/LAB5/FACTORIAL.asm) -3. Search for an element and store the address diff --git a/ES/Lab/LAB6/JOHNSON_Counter.c b/ES/Lab/LAB6/JOHNSON_Counter.c index 84202e4..6296723 100644 --- a/ES/Lab/LAB6/JOHNSON_Counter.c +++ b/ES/Lab/LAB6/JOHNSON_Counter.c @@ -3,29 +3,29 @@ int main(){ unsigned long x, i, j; // from P1.24 -> 31 - LPC_PINCON->PINSEL0 = 0; // values + LPC_PINCON->PINSEL0 = 0; // values + + LPC_GPIO0->FIODIR = 0xFF<<15; - LPC_GPIO0->FIODIR = 0xFF<<15; - x = 1<<15; // new variable - + while(1){ - x = 1<<15; + x = 1<<15; // LOOP to fill 24->31 incrementally for(i=0;i<8;i++){ - LPC_GPIO0->FIOSET=x; + LPC_GPIO0->FIOSET=x; x = x<<1; for(j=0; j<800000; j++); } // delay // LOOP to empty 24->31 incrementally. - x = 1<<15; + x = 1<<15; for(i=0;i<8;i++){ LPC_GPIO0->FIOCLR=x; x = x<<1; for(j=0; j<800000; j++); } - } \ No newline at end of file +} diff --git a/ES/Lab/Lab8/JOHNSON_Up_Down_Same_GPIO.c b/ES/Lab/Lab7/JOHNSON_Up_Down_Same_GPIO.c similarity index 100% rename from ES/Lab/Lab8/JOHNSON_Up_Down_Same_GPIO.c rename to ES/Lab/Lab7/JOHNSON_Up_Down_Same_GPIO.c diff --git a/ES/Lab/Lab7/JOHNSON_Up_Down_Separate_GPIO.c b/ES/Lab/Lab7/JOHNSON_Up_Down_Separate_GPIO.c new file mode 100644 index 0000000..de21f9a --- /dev/null +++ b/ES/Lab/Lab7/JOHNSON_Up_Down_Separate_GPIO.c @@ -0,0 +1,30 @@ +#include + +int main(){ + unsigned long x, y, i, j; + + LPC_PINCON->PINSEL0 = 0; + LPC_GPIO0->FIODIR = 0xFF<<15; + LPC_GPIO2->FIODIR = 0x0<<12; + + while(1){ + x = LPC_GPIO2->FIOPIN & (1 << 12); + y = x ? (1<<22) : (1<<15); + int dir = x ? 1 : 0; + + for(int k=0; k<2; k++){ + for(i=0; i<8; i++){ + LPC_GPIO0->FIOSET = y; + y = dir ? y>>1 : y<<1; + for(j=0; j<800000; j++); + } + y = x ? (1<<22) : (1<<15); + LPC_GPIO0->FIOCLR = y; + } + for(i=0; i<8; i++){ + LPC_GPIO0->FIOCLR = y; + y = dir ? y>>1 : y<<1; + for(j=0; j<800000; j++); + } + } +} diff --git a/ES/Lab/Lab8/16keyOn7Seg.c b/ES/Lab/Lab8/16keyOn7Seg.c new file mode 100644 index 0000000..37a9396 --- /dev/null +++ b/ES/Lab/Lab8/16keyOn7Seg.c @@ -0,0 +1,89 @@ +#include + +int main(void) { + unsigned long i, c, r; + unsigned long candidate = 0xFF; + unsigned long stable = 0; + unsigned long displayed = 0xFF; + unsigned long read_key, rows, seg; + unsigned char seven_seg[16] = { + 0x3F, 0x06, 0x5B, 0x4F, + 0x66, 0x6D, 0x7D, 0x07, + 0x7F, 0x6F, 0x77, 0x7C, + 0x39, 0x5E, 0x79, 0x71 + }; + + // Configure pins as GPIO for used ranges + LPC_PINCON->PINSEL0 = 0; + LPC_PINCON->PINSEL1 = 0; + LPC_PINCON->PINSEL3 = 0; + + // Directions + LPC_GPIO0->FIODIR |= (0xFFu << 4); // P0.4..P0.11 -> segments out + LPC_GPIO0->FIODIR |= (0x0Fu << 15); // P0.15..P0.18 -> columns out + LPC_GPIO0->FIODIR &= ~(0x0Fu << 19); // P0.19..P0.22 -> rows in + LPC_GPIO1->FIODIR |= (0x0Fu << 23); // P1.23..P1.26 -> digit enables out + + // Initial states + LPC_GPIO0->FIOCLR = (0xFFu << 4); // segments off + LPC_GPIO1->FIOCLR = (0x0Fu << 23); // all digits off + LPC_GPIO0->FIOSET = (0x0Fu << 15); // all columns high (inactive) + + while (1) { + read_key = 0xFF; + + // Scan 4 columns + for (c = 0; c < 4; c++) { + // Set all columns high, then pull one low + LPC_GPIO0->FIOSET = (0x0Fu << 15); + for (i = 0; i < 50; i++); // short settle delay + LPC_GPIO0->FIOCLR = (1u << (15 + c)); + for (i = 0; i < 200; i++); // settle after driving column + + // Read rows P0.19..P0.22 (active-low). Normalize to 0..15. + rows = (LPC_GPIO0->FIOPIN >> 19) & 0x0Fu; + + if (rows != 0x0Fu) { + for (r = 0; r < 4; r++) { + if (((rows >> r) & 1u) == 0u) { + read_key = (c << 2) + r; // c*4 + r, 0..15 + break; + } + } + LPC_GPIO0->FIOSET = (0x0Fu << 15); // restore columns high + break; // found a key this scan + } + } + + // Debounce: require 3 consecutive identical reads + if (read_key == candidate) { + if (stable < 3) stable++; + } else { + candidate = read_key; + stable = 1; + } + + if (stable >= 3) { + if (candidate != 0xFF) { + displayed = candidate & 0x0F; + } + stable = 3; // clamp + } + + // Update display if we have a digit + if (displayed != 0xFF) { + seg = seven_seg[displayed]; + LPC_GPIO0->FIOCLR = (0xFFu << 4); + LPC_GPIO0->FIOSET = ((unsigned long)seg << 4); + + // Enable only digit at P1.23 + LPC_GPIO1->FIOCLR = (0x0Fu << 23); + LPC_GPIO1->FIOSET = (1u << 23); + } else { + LPC_GPIO1->FIOCLR = (0x0Fu << 23); + } + + // Pace scanning/debounce timing + for (i = 0; i < 3000; i++); + } +} diff --git a/ES/Lab/Lab8/7SegUpDown-Switch.c b/ES/Lab/Lab8/7SegUpDown-Switch.c index 9594795..54142c8 100644 --- a/ES/Lab/Lab8/7SegUpDown-Switch.c +++ b/ES/Lab/Lab8/7SegUpDown-Switch.c @@ -2,7 +2,7 @@ int main(void){ unsigned long i, j, n; - unsigned int x; + unsigned int x; unsigned long number = 0; unsigned long count = 0; unsigned char seven_seg[16] = { @@ -20,8 +20,8 @@ int main(void){ while (1) { n = number; - x = LPC_GPIO0->FIOPIN & (1 << 21); - + x = LPC_GPIO0->FIOPIN & (1 << 21); + for (i = 0; i < 4; i++) { LPC_GPIO1->FIOCLR = (0x0F << 23); LPC_GPIO1->FIOSET = (i << 23); @@ -43,5 +43,4 @@ int main(void){ } } } - } diff --git a/ES/Lab/Lab8/JOHNSON_Up_Down_Separate_GPIO.c b/ES/Lab/Lab8/JOHNSON_Up_Down_Separate_GPIO.c deleted file mode 100644 index 45741de..0000000 --- a/ES/Lab/Lab8/JOHNSON_Up_Down_Separate_GPIO.c +++ /dev/null @@ -1,45 +0,0 @@ -#include - -int main(){ - unsigned long x, y, i, j; - - // LEDs - LPC_PINCON->PINSEL0 = 0; - LPC_GPIO0->FIODIR = 0xFF<<15; - - LPC_GPIO2->FIODIR = 0x0<<12; - - while(1){ - x = LPC_GPIO2->FIOPIN & (1 << 12); - if(x){ - y = 1<<22; - for(i=0;i<8;i++){ - LPC_GPIO0->FIOSET=y; - y = y>>1; - for(j=0; j<800000; j++); - } - y = 1<<22; - for(i=0;i<8;i++){ - LPC_GPIO0->FIOCLR=y; - y>>=1; - for(j=0; j<800000; j++); - } - } - - if(!x){ - y = 1<<15; - for(i=0;i<8;i++){ - LPC_GPIO0->FIOSET=y; - y = y<<1; - for(j=0; j<800000; j++); - } - y = 1<<15; - for(i=0;i<8;i++){ - LPC_GPIO0->FIOCLR=y; - y = y<<1; - for(j=0; j<800000; j++); - } - } - } -} - diff --git a/ES/Lab/Lab9/LCD_DOUBLELINE.c b/ES/Lab/Lab9/LCD_DOUBLELINE.c index 2f81af5..e388e04 100644 --- a/ES/Lab/Lab9/LCD_DOUBLELINE.c +++ b/ES/Lab/Lab9/LCD_DOUBLELINE.c @@ -4,9 +4,12 @@ #define EN_CTRL 0x10000000 #define DT_CTRL 0x07800000 +#define LCD_COLS 16 + unsigned int col = 0; unsigned long int temp1 = 0, temp2 = 0, i, j; unsigned char flag1 = 0, flag2 = 0; + unsigned char msg[] = ("Long messages work well, heh."); void lcd_write(void); @@ -17,23 +20,18 @@ unsigned long int init_command[] = { 0x30, 0x30, 0x30, 0x20, 0x28, 0x0C, 0x01, 0x80 }; -#define LCD_COLS 16 - int main() { LPC_GPIO0->FIODIR = DT_CTRL | RS_CTRL | EN_CTRL; flag1 = 0; - for (i = 0; i < 8; i++) { temp1 = init_command[i]; lcd_write(); } - flag1 = 1; - i = 0; while (msg[i] != '\0') { @@ -41,13 +39,11 @@ int main() { flag1 = 0; temp1 = 0xC0; lcd_write(); - flag1 = 1; } else if (col == (LCD_COLS * 2)) { flag1 = 0; temp1 = 0x80; lcd_write(); - flag1 = 1; col = 0; } @@ -57,8 +53,7 @@ int main() { col++; } - while (1) - ; + while (1); } void lcd_write(void) { @@ -95,8 +90,6 @@ void port_write(void) { void delay_lcd(unsigned long r1) { unsigned long r; - - for (r = 0; r < r1; r++) - ; + for (r = 0; r < r1; r++); return; } diff --git a/ES/Lab/Lab9/LCD_UPPERLINE.c b/ES/Lab/Lab9/LCD_UPPERLINE.c index 9639d62..50b4d61 100644 --- a/ES/Lab/Lab9/LCD_UPPERLINE.c +++ b/ES/Lab/Lab9/LCD_UPPERLINE.c @@ -2,11 +2,11 @@ #define RS_CTRL 0x08000000 #define EN_CTRL 0x10000000 -#define DT_CTRL 0x07800000 +#define DT_CTRL 0x07800000 unsigned long int temp1 = 0, temp2 = 0, i, j; unsigned char flag1 = 0, flag2 = 0; -unsigned char msg[] = ("Santhosh Sir Gr8"); +unsigned char msg[] = ("We have fun."); void lcd_write(void); void port_write(void); @@ -23,11 +23,11 @@ int main() { temp1 = init_command[i]; lcd_write(); } - + flag1=1; - + i= 0; - + while(msg[i]!='\0'){ temp1=msg[i]; i++; diff --git a/ES/Lab/Lab9/dice.c b/ES/Lab/Lab9/dice.c new file mode 100644 index 0000000..3ba453b --- /dev/null +++ b/ES/Lab/Lab9/dice.c @@ -0,0 +1,45 @@ +#include +#include + +#define RS_CTRL 0x08000000 +#define EN_CTRL 0x10000000 +#define DT_CTRL 0x07800000 + +unsigned long int temp1 = 0, temp2 = 0, i, j; +unsigned char flag1 = 0, flag2 = 0; +unsigned char msg[] = ("Dice: "); + +void lcd_write(void); +void port_write(void); +void delay_lcd(unsigned long); + +unsigned long int init_command[] = {0x30,0x30,0x30,0x20,0x28,0x0C,0x01,0x80}; + +int main() { + LPC_GPIO0->FIODIR = DT_CTRL | RS_CTRL | EN_CTRL; + for (i = 0; i < 8; i++) { temp1 = init_command[i]; flag1 = 0; lcd_write(); } + LPC_PINCON->PINSEL3 = 0; LPC_GPIO0->FIODIR &= ~(1 << 21); + + while (1) { + while ((LPC_GPIO0->FIOPIN & (1 << 21)) != 0); + flag1 = 0; temp1 = 0x01; lcd_write(); temp1 = 0x80; lcd_write(); + flag1 = 1; for (i = 0; msg[i] != '\0'; i++) { temp1 = msg[i]; lcd_write(); } + j = (rand() % 6) + 1; temp1 = '0' + j; lcd_write(); + while ((LPC_GPIO0->FIOPIN & (1 << 21)) == 0); + } +} + +void lcd_write(void) { + flag2 = (flag1 == 1) ? 0 : (((temp1 == 0x30) || (temp1 == 0x20)) ? 1 : 0); + temp2 = (temp1 & 0xF0) << 19; port_write(); + if (!flag2) { temp2 = (temp1 & 0x0F) << 23; port_write(); } +} + +void port_write(void) { + LPC_GPIO0->FIOPIN = temp2; + if (flag1 == 0) LPC_GPIO0->FIOCLR = RS_CTRL; else LPC_GPIO0->FIOSET = RS_CTRL; + LPC_GPIO0->FIOSET = EN_CTRL; delay_lcd(100); LPC_GPIO0->FIOCLR = EN_CTRL; + delay_lcd(500000); +} + +void delay_lcd(unsigned long r1) { unsigned long r; for (r = 0; r < r1; r++); } diff --git a/IS/Lab/Lab8/PKSE/encrypted_index.pkl b/IS/Lab/Lab8/PKSE/encrypted_index.pkl index 884a90f..5082e65 100644 Binary files a/IS/Lab/Lab8/PKSE/encrypted_index.pkl and b/IS/Lab/Lab8/PKSE/encrypted_index.pkl differ diff --git a/IS/Lab/Lab8/SSE/encrypted_index.bin b/IS/Lab/Lab8/SSE/encrypted_index.bin new file mode 100644 index 0000000..11d6f5c Binary files /dev/null and b/IS/Lab/Lab8/SSE/encrypted_index.bin differ