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Updated data for ES

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This commit is contained in:
sherlock 2025-10-16 12:20:44 +05:30
parent 97274dd708
commit a900dee866
3 changed files with 418 additions and 65 deletions
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91
ES/Lab/Lab10/ADC_Display.c
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@ -6,28 +6,31 @@
unsigned long int temp1 = 0, temp2 = 0, i, j;
unsigned char flag1 = 0, flag2 = 0;
unsigned long result, y; // ADC variables
unsigned char adc_string[10]; // Buffer for ADC result string
unsigned long result, y; // ADC result
void lcd_write(void);
void port_write(void);
void delay_lcd(unsigned long);
void int_to_string(unsigned long num, unsigned char* str);
unsigned long int init_command[] = {0x30, 0x30, 0x30, 0x20, 0x28, 0x0C, 0x01, 0x80};
int main() {
// LCD GPIO setup
LPC_GPIO0->FIODIR = DT_CTRL | RS_CTRL | EN_CTRL;
// ADC setup
LPC_PINCON->PINSEL3 = 3 << 28; // P1.30 function 3
LPC_SC->PCONP = 1 << 12; // power control
LPC_ADC->ADCR = 1 << 4 | 1 << 16 | 1 << 21; // ADC4, burst mode, enable
LPC_ADC->ADINTEN = (1 << 4); // Interrupt enable
void ADC_Init(void) {
LPC_PINCON->PINSEL3 = 3 << 28;
LPC_SC->PCONP = 1 << 12;
LPC_ADC->ADCR = 1 << 4 | 1 << 16 | 1 << 21;
LPC_ADC->ADINTEN = (1 << 4);
NVIC_EnableIRQ(ADC_IRQn);
}
void ADC_IRQHandler(void) {
result = (LPC_ADC->ADGDR & (0xFFF << 4)) >> 4;
y = (LPC_ADC->ADDR4 & (0xFFF << 4)) >> 4;
}
int main() {
LPC_GPIO0->FIODIR = DT_CTRL | RS_CTRL | EN_CTRL;
ADC_Init();
// LCD initialization
flag1 = 0;
for (i = 0; i < 8; i++) {
temp1 = init_command[i];
@ -35,65 +38,25 @@ int main() {
}
flag1 = 1;
delay_lcd(500000);
while(1) {
// Convert ADC result to string and display
int_to_string(result, adc_string);
// Convert result to 4 ASCII digits
unsigned char digits[4];
digits[0] = (result / 1000) % 10 + '0';
digits[1] = (result / 100) % 10 + '0';
digits[2] = (result / 10) % 10 + '0';
digits[3] = result % 10 + '0';
// Clear display and reset cursor
flag1 = 0;
temp1 = 0x01; // Clear display
for (i = 0; i < 4; i++) {
temp1 = digits[i];
lcd_write();
temp1 = 0x80; // Set cursor to home
lcd_write();
flag1 = 1;
// Display the ADC result
i = 0;
while(adc_string[i] != '\0') {
temp1 = adc_string[i];
i++;
lcd_write();
}
delay_lcd(5000000); // Update every ~1 second
}
}
void ADC_IRQHandler(void) {
result = (LPC_ADC->ADGDR & (0xFFF << 4)) >> 4; // Read 12-bit ADC result
y = (LPC_ADC->ADDR4 & (0xFFF << 4)) >> 4; // Done bit reset
}
void int_to_string(unsigned long num, unsigned char* str) {
int i = 0, j;
unsigned char temp;
// Handle zero case
if (num == 0) {
str[0] = '0';
str[1] = '\0';
return;
}
// Convert number to string (reverse order)
while (num > 0) {
str[i++] = (num % 10) + '0';
num /= 10;
}
str[i] = '\0';
// Reverse the string
for (j = 0; j < i/2; j++) {
temp = str[j];
str[j] = str[i-1-j];
str[i-1-j] = temp;
}
while (1);
}
void lcd_write(void) {
flag2 = (flag1 == 1) ? 0 : (((temp1 == 0x30) || (temp1 == 0x20)) ? 1 : 0);
temp2 = temp1 & 0xf0;
temp2 = temp2 << 19;
port_write();
@ -107,13 +70,11 @@ void lcd_write(void) {
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;