chore: rewrite to modbus rtu

simple_eeprom.h

@@ -1,7 +1,6 @@
 #ifndef __SIMPLE_EEPROM_H
 #define __SIMPLE_EEPROM_H
 
-#include <stdbool.h>
 #include <stdint.h>
 
 #include "ch32v003fun.h"
@@ -130,10 +129,10 @@ eeprom_status_t eeprom_init(void) {
   uint16_t *page = (uint16_t *)EEPROM_BASE;
 
   // check empty/partial page
-  bool needs_erase = true;
+  int needs_erase = 1;
   for (int i = 0; i < EEPROM_MAX_ENTRIES; i++) {
     if (page[i] != 0xFFFF) {
-      needs_erase = false;
+      needs_erase = 0;
       break;
     }
   }