/**
  ******************************************************************************
  * @file    main.c
  * @author	 Milandr Application Team
  * @version V1.5.0
  * @date    09.09.2022
  * @brief   This example shows how to configure External Bus and test it writing some data to external RAM, reading and verifying it
  ******************************************************************************
  * <br><br>
  *
  * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
  * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE
  * TIME. AS A RESULT, MILANDR SHALL NOT BE HELD LIABLE FOR ANY
  * DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING
  * FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
  * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
  *
  * <h2><center>&copy; COPYRIGHT 2026 Milandr </center></h2>
  */

/* Includes ------------------------------------------------------------------*/
#include "MDR1986VE8T.h"
#include "spec.h"

#include "mdr32f8_config.h"
#include "mdr32f8_port.h"
#include "mdr32f8_clkctrl.h"
#include "mdr32f8_ebc.h"

/** @addtogroup __MDR32F8_StdPeriph_Examples
  * @{
  */

/** @addtogroup __MDR32F8_Board_For_MCU
  * @{
  */

/** @addtogroup led_button_exti
  * @{
  */

/* Private typedef -----------------------------------------------------------*/
PORT_InitTypeDef PORT_InitStructure;
EBC_RGN_InitTypeDef EBC_RGNx_IS;
/* Private define ------------------------------------------------------------*/
//1645RU5U has 512 Kb
#define	NUM_BYTES   0x80000

#define NUM_WORDS   (NUM_BYTES >> 2)
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
uint32_t res;

uint32_t* addr;
uint32_t tmpRam, tmp1Ram, hasErrorRam;
uint32_t hr;

/* Private function prototypes -----------------------------------------------*/
void ExtBus_PortsConfig(void);
void TestRam_EbcConfig(void);
/* Private functions ---------------------------------------------------------*/

/**
  * @brief  Main program.
  * @param  None
  * @retval None
  */
int main(void)
{
    /* ONLY REV2 MCU, errata 0015. Disable Power-on-Reset control. Hold the SW4 button down until operation complete */
    //POR_disable();

    // Key to access clock control 
    UNLOCK_UNIT (CLK_CNTR_key);
    // Key to access fault control
    UNLOCK_UNIT (FT_CNTR_key); 
    /* Set CLKCTRL to default */
    CLKCTRL_DeInit();

    /* Enable HSE0 clock */
    CLKCTRL_HSEconfig(CLKCTRL_HSE0_CLK_ON);

    /* Check HSE success, enable PLL0, check PLL0 success, select MAX_CLK src */
    while(CLKCTRL_HSEstatus(CLKCTRL_HSEn_STAT_HSE0_RDY) != SUCCESS){}

    CLKCTRL_MAX_CLKSelection(CLKCTRL_MAX_CLK_HSE0div1);

    ExtBus_PortsConfig();
    TestRam_EbcConfig();

    addr = (uint32_t*)0x10000000;
    tmpRam = 0;

    while(tmpRam < NUM_WORDS)
    {
        *addr++ = tmpRam++;
    }

    addr = (uint32_t*)0x10000000;
    tmpRam = 0;
    tmp1Ram = 0;
    hasErrorRam = 0;

    while(tmpRam < NUM_WORDS)
    {
        tmp1Ram = *addr++;
        if(tmp1Ram != tmpRam) hasErrorRam++;
            tmpRam++;
    }
    
    while(1);
    
}

void ExtBus_PortsConfig(void)
{
    CLKCTRL_PER0_CLKcmd(CLKCTRL_PER0_CLK_MDR_PORTC_EN, ENABLE);
    CLKCTRL_PER0_CLKcmd(CLKCTRL_PER0_CLK_MDR_PORTD_EN, ENABLE);
    CLKCTRL_PER0_CLKcmd(CLKCTRL_PER0_CLK_MDR_PORTE_EN, ENABLE);

    /* Allow write to PORT regs */
    UNLOCK_UNIT (PORTC_key);
    UNLOCK_UNIT (PORTD_key);
    UNLOCK_UNIT (PORTE_key);
    
    /*---------- Config DATA Bus of EBC ----------*/
    /*---------- PortD[31:30] - DATA[1:0]; PortE[5:0] - DATA[7:2] ----------*/
    PORT_InitStructure.PORT_Pin   = (PORT_Pin_30|PORT_Pin_31);
    PORT_InitStructure.PORT_SFUNC  = PORT_SFUNC_2;
    PORT_InitStructure.PORT_SANALOG  = PORT_SANALOG_DIGITAL;
    PORT_InitStructure.PORT_SPWR = PORT_SPWR_10;
    PORT_Init(PORTD, &PORT_InitStructure);

    PORT_InitStructure.PORT_Pin   = (PORT_Pin_0|PORT_Pin_1|PORT_Pin_2|PORT_Pin_3|PORT_Pin_4|PORT_Pin_5);
    PORT_InitStructure.PORT_SFUNC  = PORT_SFUNC_2;
    PORT_InitStructure.PORT_SANALOG  = PORT_SANALOG_DIGITAL;
    PORT_InitStructure.PORT_SPWR = PORT_SPWR_10;
    PORT_Init(PORTE, &PORT_InitStructure);

    /*---------- Config ADDRESS Bus of EBC ----------*/
    /*---------- PortC[31:30] - Address[1:0], PortD[16:0] - Address[18:2] ----------*/
    PORT_InitStructure.PORT_Pin   = (PORT_Pin_30|PORT_Pin_31);
    PORT_InitStructure.PORT_SFUNC  = PORT_SFUNC_2;
    PORT_InitStructure.PORT_SANALOG  = PORT_SANALOG_DIGITAL;
    PORT_InitStructure.PORT_SPWR = PORT_SPWR_10;
    PORT_Init(PORTC, &PORT_InitStructure);

    PORT_InitStructure.PORT_Pin   = ( PORT_Pin_0|PORT_Pin_1|PORT_Pin_2|PORT_Pin_3|
                                      PORT_Pin_4|PORT_Pin_5|PORT_Pin_6|PORT_Pin_7|
                                      PORT_Pin_8|PORT_Pin_9|PORT_Pin_10|PORT_Pin_11|
                                      PORT_Pin_12|PORT_Pin_13|PORT_Pin_14|PORT_Pin_15|PORT_Pin_16);

    PORT_InitStructure.PORT_SFUNC  = PORT_SFUNC_2;
    PORT_InitStructure.PORT_SANALOG  = PORT_SANALOG_DIGITAL;
    PORT_InitStructure.PORT_SPWR = PORT_SPWR_10;
    PORT_Init(PORTD, &PORT_InitStructure);

    /*---------- Config nOE, nWE, nCS signals of EBC ----------*/
    /*---------- PortD[23] - nOE, PortD[24] - nWE, PortD[19] - nCS0 ----------*/	
    PORT_InitStructure.PORT_Pin   = (PORT_Pin_19|PORT_Pin_23|PORT_Pin_24);
    PORT_InitStructure.PORT_SFUNC  = PORT_SFUNC_2;
    PORT_InitStructure.PORT_SANALOG  = PORT_SANALOG_DIGITAL;
    PORT_InitStructure.PORT_SPWR = PORT_SPWR_10;
    PORT_Init(PORTD, &PORT_InitStructure);
}

void TestRam_EbcConfig(void)
{
    UNLOCK_UNIT (EXT_BUS_CNTR_key);

    EBC_RGNx_StructInit(&EBC_RGNx_IS);

    EBC_RGNx_IS.RGN_DIVOCLK = 3;
    EBC_RGNx_IS.RGN_WS_HOLD = 3;
    EBC_RGNx_IS.RGN_WS_SETUP  = 3;
    EBC_RGNx_IS.RGN_WS_ACTIVE = 3;
    EBC_RGNx_IS.RGN_MODE = EBC_MODE_8X;
    EBC_RGNx_IS.RGN_ECCEN = DISABLE;

    EBC_RGNx_Init(RGN0, &EBC_RGNx_IS);
    EBC_RGNx_Cmd(RGN0, ENABLE);

}

//-----------------------------assert_param--------------------------------
#if (USE_ASSERT_INFO == 1)
void assert_failed(uint8_t* file, uint32_t line)
{
    /* User can add his own implementation to report the source file ID and line number.
     Ex: printf("Wrong parameters value: file Id %d on line %d\r\n", file_id, line) */

    /* Infinite loop */
    while (1)
    {
    }
}
#elif (USE_ASSERT_INFO == 2)
void assert_failed(uint8_t* file, uint32_t line, const uint8_t* expr)
{
    /* User can add his own implementation to report the source file ID, line number and
     expression text.
     Ex: printf("Wrong parameters value (%s): file Id %d on line %d\r\n", expr, file_id, line) */

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

/**
  * @}
  */

/**
  * @}
  */

/**
  * @}
  */

/******************* (C) COPYRIGHT 2026 Milandr *******************************/

/* END OF FILE main.c */



