fix rebase module05

module05/ex01/header.h

@@ -12,6 +12,11 @@
 #include "usart.h"
 #include "adc.h"
 
+//
+// GLOBAL
+//
+extern volatile uint8_t adc_channel;
+
 //
 // PROTOTYPES
 //

module05/ex01/main.c

@@ -26,4 +26,4 @@ int main() {
 	timer_1B_init();
 
 	while(1);
-}
+}

module05/ex01/math.c

@@ -0,0 +1,9 @@
+#include "header.h"
+
+void int_to_hex_string(uint64_t value, char *out, uint8_t num_digits) {				// num_digits : number of digit of the output, ex 2 for 3FF (1023) -> FF
+    for (uint8_t i = 0; i < num_digits; ++i) {
+        uint8_t shift = (num_digits - 1 - i) * 4;
+        out[i] = INT_TO_HEX_CHAR((value >> shift) & 0x0F);
+    }
+    out[num_digits] = '\0';
+}