MCUXpresso_MIMXRT1052xxxxB/boards/evkbimxrt1050/emwin_examples/emwin_serial_terminal/emwin_serial_terminal.c

/*
 * Copyright (c) 2016, Freescale Semiconductor, Inc.
 * Copyright 2016-2017 NXP
 * All rights reserved.
 *
 * SPDX-License-Identifier: BSD-3-Clause
 */

/*  Standard C Included Files */
#include <stdio.h>
#include <string.h>
#include "pin_mux.h"
#include "clock_config.h"
#include "board.h"
#include "fsl_debug_console.h"
#include "emwin_support.h"

#include "GUI.h"
#include "GUIDRV_Lin.h"
#include "BUTTON.h"

#include "fsl_gpio.h"
#include "fsl_gpt.h"
/*******************************************************************************
 * Definitions
 ******************************************************************************/

/*******************************************************************************
 * Prototypes
 ******************************************************************************/
void BOARD_EnableLcdInterrupt(void);

/*******************************************************************************
 * Variables
 ******************************************************************************/

/*******************************************************************************
 * Code
 ******************************************************************************/

/* Initialize the LCD_DISP. */
void BOARD_InitLcd(void)
{
    volatile uint32_t i = 0x1000U;

    gpio_pin_config_t config = {
        kGPIO_DigitalOutput,
        0,
        kGPIO_NoIntmode,
    };

    /* Reset the LCD. */
    GPIO_PinInit(LCD_DISP_GPIO, LCD_DISP_GPIO_PIN, &config);

    GPIO_WritePinOutput(LCD_DISP_GPIO, LCD_DISP_GPIO_PIN, 0);

    while (i--)
    {
    }

    GPIO_WritePinOutput(LCD_DISP_GPIO, LCD_DISP_GPIO_PIN, 1);

    /* Backlight. */
    config.outputLogic = 1;
    GPIO_PinInit(LCD_BL_GPIO, LCD_BL_GPIO_PIN, &config);

    /*Clock setting for LPI2C*/
    CLOCK_SetMux(kCLOCK_Lpi2cMux, LPI2C_CLOCK_SOURCE_SELECT);
    CLOCK_SetDiv(kCLOCK_Lpi2cDiv, LPI2C_CLOCK_SOURCE_DIVIDER);
}

void BOARD_InitLcdifPixelClock(void)
{
    /*
     * The desired output frame rate is 60Hz. So the pixel clock frequency is:
     * (480 + 41 + 4 + 18) * (272 + 10 + 4 + 2) * 60 = 9.2M.
     * Here set the LCDIF pixel clock to 9.3M.
     */

    /*
     * Initialize the Video PLL.
     * Video PLL output clock is OSC24M * (loopDivider + (denominator / numerator)) / postDivider = 93MHz.
     */
    clock_video_pll_config_t config = {
        .loopDivider = 31,
        .postDivider = 8,
        .numerator   = 0,
        .denominator = 0,
    };

    CLOCK_InitVideoPll(&config);

    /*
     * 000 derive clock from PLL2
     * 001 derive clock from PLL3 PFD3
     * 010 derive clock from PLL5
     * 011 derive clock from PLL2 PFD0
     * 100 derive clock from PLL2 PFD1
     * 101 derive clock from PLL3 PFD1
     */
    CLOCK_SetMux(kCLOCK_LcdifPreMux, 2);

    CLOCK_SetDiv(kCLOCK_LcdifPreDiv, 4);

    CLOCK_SetDiv(kCLOCK_LcdifDiv, 1);
}

void BOARD_InitGPT(void)
{
    gpt_config_t gptConfig;

    GPT_GetDefaultConfig(&gptConfig);

    gptConfig.enableFreeRun = true;
    gptConfig.divider       = 3000;

    /* Initialize GPT module */
    GPT_Init(EXAMPLE_GPT, &gptConfig);
    GPT_StartTimer(EXAMPLE_GPT);
}



int main(void)
{
    int termWidth;
    int termHeight;

    int charWidth;
    int lineHeight;

    int c      = 0;
    int c_prev = 0;

    /* Board pin, clock, debug console init */
    BOARD_ConfigMPU();
    BOARD_InitBootPins();
    BOARD_InitBootClocks();
    BOARD_InitLcdifPixelClock();
    BOARD_InitDebugConsole();
    BOARD_InitLcd();
    BOARD_InitGPT();

    /* emWin start */
    GUI_Init();

    WM_SetSize(WM_HBKWIN, LCD_WIDTH, LCD_HEIGHT);

    /* Solid color display */
    GUI_SetBkColor(GUI_WHITE);
    GUI_Clear();

    GUI_MULTIBUF_Begin();
    GUI_Exec();
    GUI_MULTIBUF_End();

    GUI_SetColor(GUI_BLACK);

    termWidth  = WM_GetWindowSizeX(0);
    termHeight = WM_GetWindowSizeY(0);

    GUI_SetFont(GUI_FONT_8X16);
    lineHeight = GUI_GetFontDistY();
    charWidth  = GUI_GetCharDistX('_');

    GUI_DispString("Waiting for data - connect using serial terminal\n>");

    for (;;)
    {
        /* show cursor */
        GUI_MULTIBUF_Begin();
        GUI_DispChar('_');
        GUI_GotoX(GUI_GetDispPosX() - charWidth);
        GUI_MULTIBUF_End();

        c = GETCHAR();
        if (c == '\r')
        {
            /* translate CR to LF */
            c_prev = c;
            c      = '\n';
        }
        else if (c == '\n' && c_prev == '\r')
        {
            /* ignore LF following CR */
            c_prev = c;
            continue;
        }
        c_prev = c;

        /* hide cursor */
        GUI_MULTIBUF_Begin();
        GUI_DispChar(' ');
        GUI_GotoX(GUI_GetDispPosX() - charWidth);

        GUI_DispChar(c);

        if (GUI_GetDispPosX() >= termWidth)
        {
            GUI_DispNextLine();
        }

        if (GUI_GetDispPosY() + lineHeight > termHeight)
        {
            GUI_Clear();
            GUI_GotoY(0);
        }
        GUI_MULTIBUF_End();
    }
}