/**
  ******************************************************************************
  * @file    Project/main.c
  * @author  "Vladimir N. Shilov" <shilow@ukr.net>
  * @version v.0.1
  * @date    08-July-2019
  * @brief   Main program body
   ******************************************************************************
  * @attention
  *
  * "THE BEER-WARE LICENSE" (Revision 42):
  * <shilow@ukr.net> wrote this file.  As long as you retain this notice you
  * can do whatever you want with this stuff. If we meet some day, and you think
  * this stuff is worth it, you can buy me a beer in return.   Shilov V.N.
  *
  ******************************************************************************
  */


/* Includes ------------------------------------------------------------------*/
#include "stm8s.h"
#include "max7219.h"

/* Private defines -----------------------------------------------------------*/
const static max7219_reg_t digitPosition[8] = {
  RegDigit0, RegDigit1, RegDigit2, RegDigit3,
  RegDigit4, RegDigit5, RegDigit6, RegDigit7
};
const static uint8_t digitValue[16] = {
  Sym_0, Sym_1, Sym_2, Sym_3, Sym_4, Sym_5, Sym_6, Sym_7,
  Sym_8, Sym_9, Sym_A, Sym_b, Sym_c, Sym_d, Sym_E, Sym_F
};

/* Private function prototypes -----------------------------------------------*/
static void boardInit(void);

/* Private functions ---------------------------------------------------------*/

void main(void)
{
  boardInit();

  MAX7219_Config();
  uint8_t i;
  for (i=1; i<9; i++) {
    MAX7219_WriteData(digitPosition[i], digitValue[i]);
  }

  /* Infinite loop */
  while (1)
  {
  }

}

/* Private functions ---------------------------------------------------------*/
static void boardInit(void) {
  /* Насколько я понял, для частот выше 16МГц нужно вводить задержку при работе с FLASH:
    - Before using the HSE clock make sure that the "Flash_Wait_States" is set to 1.
    - To do so :
     - with STVD (menu: Debug Instrument -> MCU configuration -> Options)
     - with EWSTM8 (menu: ST-LINK -> Option bytes ->Flash_Wait_States: 1)
  */

  ErrorStatus status = ERROR;

  CLK_DeInit();

  /* Configure the Fcpu to DIV1*/
  CLK_SYSCLKConfig(CLK_PRESCALER_CPUDIV1);

  /* Configure the HSI prescaler to the optimal value */
  CLK_SYSCLKConfig(CLK_PRESCALER_HSIDIV1);

  /* Output Fcpu on CLK_CCO pin */
  CLK_CCOConfig(CLK_OUTPUT_CPU);

  /* Configure the system clock to use HSE clock source and to run at Crystal Mhz */
  status = CLK_ClockSwitchConfig(CLK_SWITCHMODE_AUTO, CLK_SOURCE_HSE, DISABLE, CLK_CURRENTCLOCKSTATE_DISABLE);

  if (status == ERROR) {
    /* Configure the system clock to use HSI clock source and to run at 16Mhz */
    status = CLK_ClockSwitchConfig(CLK_SWITCHMODE_AUTO, CLK_SOURCE_HSI, DISABLE, CLK_CURRENTCLOCKSTATE_DISABLE);
    // set FLAG for
  }
}

#ifdef USE_FULL_ASSERT
/**
  * @brief  Reports the name of the source file and the source line number
  *   where the assert_param error has occurred.
  * @param file: pointer to the source file name
  * @param line: assert_param error line source number
  * @retval : None
  */
void assert_failed(u8* file, u32 line)
{
  /* User can add his own implementation to report the file name and line number,
     ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */

  /* Infinite loop */
  while (1)
  {
  }
}
#endif


/************************ (C) COPYRIGHT Shilov V.N. *****END OF FILE****/