update math with itoa base

module05/ex02/adc.c

@@ -25,7 +25,7 @@ void adc_print_dec(uint16_t value) {
 	// 	value = calibrate_temperature(value, 5);
 	// }
 	char buffer[17] = {0};
-	int_to_string((uint16_t)value, buffer);
+	int_to_string_base((uint16_t)value, buffer, 10);
 	uart_printstr(buffer);
 }
 

module05/ex02/header.h

@@ -25,7 +25,7 @@ extern volatile uint8_t adc_channel;
 void timer_1B_init();
 // math.c
 void int_to_hex_string(uint64_t value, char *out, uint8_t num_digits);
-void int_to_string(uint64_t value, char *out);
+void int_to_string_base(uint64_t value, char *buffer, uint8_t base);
 // adc.c
 void adc_init(uint8_t prescaler_value);
 uint16_t calibrate_temperature(uint16_t value, uint8_t speed);

module05/ex02/math.c

@@ -8,25 +8,34 @@ void int_to_hex_string(uint64_t value, char *out, uint8_t num_digits) {				// nu
     out[num_digits] = '\0';
 }
 
-void int_to_string(uint64_t value, char *buffer) {
+void int_to_string_base(uint64_t value, char *buffer, uint8_t base) {				// buffer must have the right size
+    if (base < 2 || base > 36) {
+        buffer[0] = '\0';															// unsupported base
+        return;
+    }
+
     // handle zero case
     if (value == 0) {
         buffer[0] = '0';
+        buffer[1] = '\0';
 		return;
     }
 
-	uint8_t size = -1;
+	uint8_t size = 0;
 	uint64_t copy = value;
 
 	while (copy) {
-		copy /= 10;
+		copy /= base;
 		size++;
 	}
 
+    buffer[size] = '\0';															// null-terminate the string
+    size--;																			// adjust index for last digit
+
 	while (value) {
-		uint8_t digit = value % 10;
-		buffer[size] = digit + '0';
-		value /= 10;
+		uint8_t digit = value % base;
+		buffer[size] = digit < 10 ? ('0' + digit) : ('A' + digit - 10);
+		value /= base;
 		size--;
 	}
-}
+}

module06/ex00/header.h

@@ -36,6 +36,9 @@ void uart_init();
 void uart_tx(char c);
 void uart_printstr(const char* str);
 void uart_printstr_endl(const char* str);
+// math.c
+void int_to_hex_string(uint64_t value, char *out, uint8_t num_digits);
+void int_to_string(uint64_t value, char *out);
 
 //
 // MACROS

module06/ex00/math.c

@@ -30,3 +30,35 @@ void int_to_string(uint64_t value, char *buffer) {
 		size--;
 	}
 }
+
+void itoa_base(uint64_t value, char *buffer, uint8_t base) {	// buffer must have the right size
+    if (base < 2 || base > 36) {
+        buffer[0] = '\0';										// unsupported base
+        return;
+    }
+
+    // handle zero case
+    if (value == 0) {
+        buffer[0] = '0';
+        buffer[1] = '\0';
+		return;
+    }
+
+	uint8_t size = 0;
+	uint64_t copy = value;
+
+	while (copy) {
+		copy /= base;
+		size++;
+	}
+
+    buffer[size] = '\0';										// null-terminate the string
+    size--;														// adjust index for last digit
+
+	while (value) {
+		uint8_t digit = value % base;
+		buffer[size] = digit < 10 ? ('0' + digit) : ('A' + digit - 10);
+		value /= base;
+		size--;
+	}
+}

module06/ex00/uart.c

@@ -18,12 +18,12 @@ void uart_init() {
 }
 
 // char uart_rx(void) {
-// 	while (!TEST(UCSR0A, RXC0));												// 20.11.2 : do nothing until there are unread data in the receive buffer (UDRn), (RXCn flag in UCSRnA register set to 1 when buffer has data)
+// 	while (!TEST(UCSR0A, RXC0));													// 20.11.2 : do nothing until there are unread data in the receive buffer (UDRn), (RXCn flag in UCSRnA register set to 1 when buffer has data)
 // 	return UDR0;																	// 20.11.1 : get data in buffer, UDRn – USART I/O Data Register (read and write)
 // }
 
 void uart_tx(char c) {
-	while (!TEST(UCSR0A, UDRE0));												// 20.11.2 : do nothing until UDRn buffer is empty, (UDREn flag in UCSRnA register set to 1 when buffer empty)
+	while (!TEST(UCSR0A, UDRE0));													// 20.11.2 : do nothing until UDRn buffer is empty, (UDREn flag in UCSRnA register set to 1 when buffer empty)
 	UDR0 = (unsigned char) c;														// 20.11.1 : Put data into buffer, UDRn – USART I/O Data Register (read and write)
 }
 
@@ -39,10 +39,10 @@ void uart_printstr_endl(const char* str) {
 	uart_printstr("\r\n");
 }
 
-void uart_printstr_itoa_base_endl(uint64_t value) {
-	;
-	uart_printstr(str);
-	uart_printstr("\r\n");
+void uart_printstr_itoa_base(uint64_t value) {
+	char buffer[17] = {0};
+	int_to_string((uint16_t)value, buffer);
+	uart_printstr(buffer);
 }
 
 // ISR(USART_RX_vect) {																// Table 12-6 : we select the code for USART Receive