#include "inc/stm8s.h"
#include "inc/stm8s_gpio.h"
#include <stdlib.h>
#include <stdio.h>


const uint16_t clk_start = CLK_BaseAddress;

const char *clk_regs_names[] =
{
 "ICKR      =",
 "ECKR      =",
 "RESERVED  =",
 "CMSR      =",
 "SWR       =",
 "SWCR      =",
 "CKDIVR    =",
 "PCKENR1   =",
 "CSSR      =",
 "CCOR      =",
 "PCKENR2   =",
 "RESERVED1 =",
 "HSITRIMR  =",
 "SWIMCCR   ="
};

uint8_t clk_regs_values[sizeof(clk_regs_names)];


unsigned char out_str[32];

void uart_tx_string(unsigned char *str);



//================================ UART ======================================//

 void UART1_init(void)
 {
   // Baudrate 9600 for F_CPU = 16 MHz
   UART1->BRR2 = 0x03;
   UART1->BRR1 = 0x68;

   UART1->CR1 = 0x00;
   UART1->CR2 = /*UART1_CR2_REN | UART1_CR2_RIEN |*/ UART1_CR2_TEN;
 }

 // Отправка байта
 inline void uart_tx_byte(uint8_t data)
 {
     while(!(UART1->SR & UART1_SR_TXE));
     UART1->DR = data;
 }

 // For debugging feature
 void uart_tx_string(unsigned char *str)
 {
   while(*str != 0) {uart_tx_byte(*str++);};
 }

//============================ UART END ======================================//


void main(void)
{
    // UART TX pin
    GPIOD->ODR  = 0x00;
    GPIOD->DDR |= GPIO_PIN_5;
    GPIOD->CR1 |= GPIO_PIN_5;
    GPIOD->CR2 |= GPIO_PIN_5;

    for (uint8_t i = 0; i < sizeof(clk_regs_values); i++)
    {
        clk_regs_values[i] = *((uint8_t *)(clk_start +i));
    }

  // Disable clock prescaler. F_CPU = 16 MHz
  CLK->CKDIVR = 0x00;

  UART1_init();

    uart_tx_byte('\n');
    for (uint8_t i = 0; i < sizeof(clk_regs_names)/sizeof(clk_regs_names[0]); i++)
    {
        sprintf(out_str, "%-s 0x%02X\n", clk_regs_names[i], clk_regs_values[i]);
        uart_tx_string(out_str);
    }

  uart_tx_string("Initialization complete.\n");

  while(1)
  {
  }
}