/* -----------------------------------------------------
                        v003_serial.h

    Header fuer rudimentaere UART-Funktionen
    erweitert um Stream-Vererbung

    MCU   :  CH32V003
    Takt  :  48 MHz

    30.11.2025  R. Seelig
  ------------------------------------------------------ */

#ifndef in_v003serial
  #define in_v003serial

  #include <stdint.h>
  #include "Arduino.h"

  class V003serial : public Stream
  {

    #define  FUNCONF_SYSTEM_CORE_CLOCK  48000000l
    #define  GPIO_CNF_OUT_PP_AF         8
    #define  GPIO_CNF_IN_PUPD           8
    #define  CTLR1_UE_Set               ((uint16_t)0x2000) // USART enable mask


    public:
      V003serial();

      void begin(uint32_t brate);

      void putchar(uint8_t ch);
      uint8_t getchar(void);
      uint8_t ischar(void);


      void prints(char *txbuf);
      void printint(int i, char komma);

      void readline(char *txbuffer, int maxlen);
      void readln(char *txbuffer, int maxlen);

      void printhex(uint16_t h, char out16);

      // Stream Methoden
      int available() override;
      int read() override;
      int peek() override;
      size_t write(uint8_t) override;
      
      char *lineinput(char *string, uint8_t mode, char anz);        
      int readint(uint8_t anz);
      int readhex(uint8_t anz);
            
    private:
      uint32_t baudrate;

      void locase(char *str);
      void hexnibbleout(uint8_t b);
      char *strfindch(const char *str, char ch);
      char upperch(char ch);
      void strdelch(char *ptrstr, int pos);
      void strhicase(char *ptrstr);
      int my_pow10(unsigned int x);
      int my_atoi(char *str);  
      int my_ahtoi(char *str);  
  };

#endif