---

#include "MDR32F9Qx_config.h"
#include "MDR32Fx.h"
#include "MDR32F9Qx_uart.h"
#include "MDR32F9Qx_port.h"
#include "MDR32F9Qx_rst_clk.h"

static PORT_InitTypeDef PortInit;
static UART_InitTypeDef UART_InitStructure;

volatile uint32_t delay_dec = 0;

void SysTick_Handler(void)
{
    if (delay_dec != 0)
    {
        delay_dec--;
    }
}

void delay_ms(uint32_t delay_ms_value)
{
    delay_dec = delay_ms_value;

    while (delay_dec != 0)
    {
    }
}

void init_delay(void)
{
    SysTick->LOAD = (8000000 / 1000) - 1;
    SysTick->VAL = 0;

    SysTick->CTRL = (1UL << SysTick_CTRL_CLKSOURCE_Pos) |
                    (1UL << SysTick_CTRL_TICKINT_Pos)   |
                    (1UL << SysTick_CTRL_ENABLE_Pos);
}

void init_UART2(void)
{
    RST_CLK_PCLKcmd(RST_CLK_PCLK_PORTF, ENABLE);
    RST_CLK_PCLKcmd(RST_CLK_PCLK_UART2, ENABLE);

    PortInit.PORT_PULL_UP   = PORT_PULL_UP_OFF;
    PortInit.PORT_PULL_DOWN = PORT_PULL_DOWN_OFF;
    PortInit.PORT_PD_SHM    = PORT_PD_SHM_OFF;
    PortInit.PORT_PD        = PORT_PD_DRIVER;
    PortInit.PORT_GFEN      = PORT_GFEN_OFF;
    PortInit.PORT_FUNC      = PORT_FUNC_ALTER;
    PortInit.PORT_SPEED     = PORT_SPEED_MAXFAST;
    PortInit.PORT_MODE      = PORT_MODE_DIGITAL;

    PortInit.PORT_OE  = PORT_OE_OUT;
    PortInit.PORT_Pin = PORT_Pin_1;
    PORT_Init(MDR_PORTF, &PortInit);

    PortInit.PORT_OE  = PORT_OE_IN;
    PortInit.PORT_Pin = PORT_Pin_0;
    PORT_Init(MDR_PORTF, &PortInit);

    RST_CLK_CPU_PLLconfig(RST_CLK_CPU_PLLsrcHSIdiv2, 0);

    UART_BRGInit(MDR_UART2, UART_HCLKdiv1);

    UART_InitStructure.UART_BaudRate = 115200;
    UART_InitStructure.UART_WordLength = UART_WordLength8b;
    UART_InitStructure.UART_StopBits = UART_StopBits1;
    UART_InitStructure.UART_Parity = UART_Parity_No;
    UART_InitStructure.UART_FIFOMode = UART_FIFO_ON;
    UART_InitStructure.UART_HardwareFlowControl =
        UART_HardwareFlowControl_RXE | UART_HardwareFlowControl_TXE;

    UART_Init(MDR_UART2, &UART_InitStructure);
    UART_Cmd(MDR_UART2, ENABLE);
}

int main(void)
{
    uint8_t i = 0;

    init_delay();
    init_UART2();

    while (1)
    {
        while (UART_GetFlagStatus(MDR_UART2, UART_FLAG_BUSY))
        {
        }

        UART_SendData(MDR_UART2, i);

        i++;

        delay_ms(5000);
    }
}