fix rebase module05

module05/ex00/adc.c

@@ -1,14 +1,6 @@
 #include "header.h"
 
-// Table 14-6. Port C Pins Alternate Functions
-// - PC0 -> ADC0 (ADC Input Channel 0)
-//       -> PCINT8 (Pin Change Interrupt 8)
-//
 // 24.2 : The ADC generates a 10-bit result which is presented in the ADC Data Registers, ADCH and ADCL
-//
-// START A CONVERSTION in single conversion mode :
-// - disabling the Power Reduction ADC bit, PRADC
-// - writing a logical one to the ADC Start Conversion bit, ADSC
 
 void adc_init(uint8_t prescaler_value) {
     ADMUX = (1 << REFS0);									// Table 24-3 : set voltage reference, AVCC with external capacitor at AREF pin

module05/ex00/header.h

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

module05/ex00/main.c

@@ -16,20 +16,14 @@
 
 volatile uint8_t adc_channel = 0;
 
-// description
+// read potentiometer value and print it in uart as hexadecimal 2-number
 int main() {
     char buffer[4];
 	SREG |= ENABLE_GLOBAL_INTERRUPT;											// 7.3.1 : Status Register, bit 7 : I – Global Interrupt Enable
 	uart_init();
 	adc_init(ADC_PRESCALER);
 
-	while(1) {
-        uint16_t value = adc_read(0);											// Read from ADC0 (A0)
-		int_to_hex_string(value, buffer, 2);
-        uart_printstr_endl(buffer);
-        _delay_ms(20);															// Wait 20ms
-	}
-}
+	timer_1B_init();
 
-// ISR(ADC_vect) {		// Table 12-6 : interrupt vector for ADC Conversion Complete
-// }
+	while(1);
+}

module05/ex00/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';
+}