Implemented custom atoi methods, as the included one only has 16-bit precision

Cart_Reader/NES.ino

@@ -7,22 +7,23 @@
 
 #include "options.h"
 #ifdef enable_NES
+#include "atoi32.h"
 
 //Line Content
-//26   Supported Mappers
+//28   Supported Mappers
-//101  Defines
+//103  Defines
-//131  Variables
+//133  Variables
-//192  Menu
+//194  Menu
-//311  Setup
+//313  Setup
-//340  Low Level Functions
+//342  Low Level Functions
-//587  CRC Functions
+//589  CRC Functions
-//647  File Functions
+//649  File Functions
-//831  NES 2.0 Header Functions
+//844  NES 2.0 Header Functions
-//1112 Config Functions
+//1125 Config Functions
-//1708 ROM Functions
+//1721 ROM Functions
-//2806 RAM Functions
+//2819 RAM Functions
-//3235 Eeprom Functions
+//3248 Eeprom Functions
-//3431 NESmaker Flash Cart Functions
+//3444 NESmaker Flash Cart Functions
 
 /******************************************
   Supported Mappers
@@ -1037,7 +1038,7 @@ uint32_t getPRGSizeFromDatabaseRow(const char* crctest) {
     return 0;
   }
 
-  uint32_t return_size = (uint32_t)atoi(prg_size_str);
+  uint32_t return_size = atoi32_unsigned(prg_size_str);
   free(prg_size_str);
 
   return return_size;
@@ -1049,7 +1050,7 @@ uint32_t getCHRSizeFromDatabaseRow(const char* crctest) {
     return 0;
   }
 
-  uint32_t return_size = (uint32_t)atoi(chr_size_str);
+  uint32_t return_size = atoi32_unsigned(chr_size_str);
   free(chr_size_str);
 
   return return_size;

Cart_Reader/atoi32.cpp

@@ -0,0 +1,55 @@
+#include "atoi32.h"
+#include <stddef.h>
+#include <inttypes.h>
+
+int32_t atoi32_signed(const char* input_string) {
+  if (input_string == NULL) {
+    return 0;
+  }
+
+  int int_sign = 1;
+  int i = 0;
+
+  if (input_string[0] == '-') {
+    int_sign = -1;
+    i = 1;
+  }
+
+  int64_t return_val = 0;
+
+  while (input_string[i] != '\0') {
+    if (input_string[i] >= '0' && input_string[i] <= '9') {
+      return_val = (return_val * 10) + (input_string[i] - '0');
+    } else if (input_string[i] != '\0') {
+      return 0;
+    }
+
+    i++;
+  }
+
+  return_val = return_val * int_sign;
+
+  return return_val;
+}
+
+uint32_t atoi32_unsigned(const char* input_string) {
+  if (input_string == NULL) {
+    return 0;
+  }
+
+  int i = 0;
+
+  uint64_t return_val = 0;
+
+  while (input_string[i] != '\0') {
+    if (input_string[i] >= '0' && input_string[i] <= '9') {
+      return_val = (return_val * 10) + (input_string[i] - '0');
+    } else if (input_string[i] != '\0') {
+      return 0;
+    }
+
+    i++;
+  }
+
+  return return_val;
+}

Cart_Reader/atoi32.h

@@ -0,0 +1,10 @@
+#ifndef _ATOI32_H
+#define _ATOI32_H
+
+#include <stddef.h>
+#include <inttypes.h>
+
+int32_t atoi32_signed(const char* input_string);
+uint32_t atoi32_unsigned(const char* input_string);
+
+#endif

Cart_Reader/snes_clk.cpp

@@ -1,5 +1,6 @@
 #include "snes_clk.h"
 #include <SdFat.h>
+#include "atoi32.h"
 
 int32_t readClockOffset() {
 	File clock_file;
@@ -38,7 +39,7 @@ int32_t readClockOffset() {
 		}
 	}
 
-	clock_offset = (int32_t)atoi(clock_buf);
+	clock_offset = atoi32_signed(clock_buf);
 	free(clock_buf);
 
 	return clock_offset;

Cart_Reader/snes_clk.h

@@ -2,6 +2,7 @@
 #define _SNES_CLK_H
 
 #include <SdFat.h>
+#include "atoi32.h"
 
 int32_t readClockOffset();