Added functioning code for screen. Next todo is to merge screen into rest of module_code.

<?xml version="1.0" encoding="iso-8859-1"?>

<workspace>  <project>

    <path>$WS_DIR$\pca10056\blank\iar\gfx_pca10056.ewp</path>

  </project>  <project>

    <path>$WS_DIR$\pca10040\blank\iar\gfx_pca10040.ewp</path>

  </project>  <batchBuild/>

</workspace>

 No newline at end of file

The provided HEX files were compiled using the projects located in the folders for the respective boards (pca10xxx).

For license and copyright information, see the individual .c and .h files that are included in the projects.

/**

 * Copyright (c) 2017 - 2019, Nordic Semiconductor ASA

 *

 * All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without modification,

 * are permitted provided that the following conditions are met:

 *

 * 1. Redistributions of source code must retain the above copyright notice, this

 *    list of conditions and the following disclaimer.

 *

 * 2. Redistributions in binary form, except as embedded into a Nordic

 *    Semiconductor ASA integrated circuit in a product or a software update for

 *    such product, must reproduce the above copyright notice, this list of

 *    conditions and the following disclaimer in the documentation and/or other

 *    materials provided with the distribution.

 *

 * 3. Neither the name of Nordic Semiconductor ASA nor the names of its

 *    contributors may be used to endorse or promote products derived from this

 *    software without specific prior written permission.

 *

 * 4. This software, with or without modification, must only be used with a

 *    Nordic Semiconductor ASA integrated circuit.

 *

 * 5. Any software provided in binary form under this license must not be reverse

 *    engineered, decompiled, modified and/or disassembled.

 *

 * THIS SOFTWARE IS PROVIDED BY NORDIC SEMICONDUCTOR ASA "AS IS" AND ANY EXPRESS

 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES

 * OF MERCHANTABILITY, NONINFRINGEMENT, AND FITNESS FOR A PARTICULAR PURPOSE ARE

 * DISCLAIMED. IN NO EVENT SHALL NORDIC SEMICONDUCTOR ASA OR CONTRIBUTORS BE

 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR

 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE

 * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT

 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

 *

 */

/** @file

 * @brief TFT Example Application main file.

 *

 * This file contains the source code for a sample application using the

 * GFX library based on the ILI9341 controller.

 *

 */

#include "nrf_gfx.h"

#include "nrf52_dk.h"

#include "app_util_platform.h"

#include "nrf_gpio.h"

#include "nrf_delay.h"

#include "boards.h"

#include "app_error.h"

#include <string.h>

#include "nrf_log.h"

#include "nrf_log_ctrl.h"

#include "nrf_log_default_backends.h"

#define GRAY            0xC618

#define RED             0xF800

#define BLUE            0x001F

#define LINE_STEP       10

#define CIRCLE_RADIUS   10

#define CIRCLE_STEP     ((2 * CIRCLE_RADIUS) + 1)

#define BORDER          2

extern const nrf_gfx_font_desc_t orkney_8ptFontInfo;

extern const nrf_lcd_t nrf_lcd_ili9341;

extern const nrf_lcd_t nrf_lcd_st7735;

static const nrf_gfx_font_desc_t * p_font = &orkney_8ptFontInfo;

static const nrf_lcd_t * p_lcd = &nrf_lcd_st7735;

static void gfx_initialization(void)

{

    APP_ERROR_CHECK(nrf_gfx_init(p_lcd));

}

static void brackground_set(void)

{

    nrf_gfx_invert(p_lcd, true);

    nrf_gfx_background_set(p_lcd, nrf52);

    nrf_gfx_invert(p_lcd, false);

}

static void text_print(const char * test_text, uint16_t x, uint16_t y)

{

    nrf_gfx_point_t text_start =NRF_GFX_POINT(x,y); //NRF_GFX_POINT(x, nrf_gfx_height_get(p_lcd) - 50);

    APP_ERROR_CHECK(nrf_gfx_print(p_lcd, &text_start, 0, test_text, p_font, true));

}

static void screen_clear(void)

{

    nrf_gfx_screen_fill(p_lcd, GRAY);

}

static void line_draw(void)

{

    nrf_gfx_line_t my_line = NRF_GFX_LINE(0, 0, 0, nrf_gfx_height_get(p_lcd), 2);

    nrf_gfx_line_t my_line_2 = NRF_GFX_LINE(nrf_gfx_width_get(p_lcd), nrf_gfx_height_get(p_lcd), 0, nrf_gfx_height_get(p_lcd), 1);

    for (uint16_t i = 0; i <= nrf_gfx_width_get(p_lcd); i += LINE_STEP)

    {

        my_line.x_end = i;

        APP_ERROR_CHECK(nrf_gfx_line_draw(p_lcd, &my_line, RED));

    }

    my_line.x_end = nrf_gfx_width_get(p_lcd);

    for (uint16_t i = 0; i <= nrf_gfx_height_get(p_lcd); i += LINE_STEP)

    {

        my_line.y_end = (nrf_gfx_height_get(p_lcd) - i);

        APP_ERROR_CHECK(nrf_gfx_line_draw(p_lcd, &my_line, RED));

    }

    for (uint16_t i = 0; i <= nrf_gfx_height_get(p_lcd); i += LINE_STEP)

    {

        my_line_2.y_end = (nrf_gfx_height_get(p_lcd) - i);

        APP_ERROR_CHECK(nrf_gfx_line_draw(p_lcd, &my_line_2, BLUE));

    }

    my_line_2.y_end = 0;

    for (uint16_t i = 0; i <= nrf_gfx_width_get(p_lcd); i += LINE_STEP)

    {

        my_line_2.x_end = i;

        APP_ERROR_CHECK(nrf_gfx_line_draw(p_lcd, &my_line_2, BLUE));

    }

}

static void circle_draw(void)

{

    nrf_gfx_circle_t my_circle = NRF_GFX_CIRCLE(0, 0, CIRCLE_RADIUS);

    for (uint16_t j = 0; j <= nrf_gfx_height_get(p_lcd); j += CIRCLE_STEP)

    {

        my_circle.y = j;

        for (uint16_t i = 0; i <= nrf_gfx_width_get(p_lcd); i += CIRCLE_STEP)

        {

            my_circle.x = i;

            APP_ERROR_CHECK(nrf_gfx_circle_draw(p_lcd, &my_circle, BLUE, true));

        }

    }

    for (uint16_t j = CIRCLE_RADIUS; j <= nrf_gfx_height_get(p_lcd) + CIRCLE_RADIUS; j += CIRCLE_STEP)

    {

        my_circle.y = j;

        for (uint16_t i = CIRCLE_RADIUS; i <= nrf_gfx_width_get(p_lcd) + CIRCLE_RADIUS; i += CIRCLE_STEP)

        {

            my_circle.x = i;

            APP_ERROR_CHECK(nrf_gfx_circle_draw(p_lcd, &my_circle, RED, false));

        }

    }

}

static void rect_draw(void)

{

    nrf_gfx_rect_t my_rect = NRF_GFX_RECT(nrf_gfx_width_get(p_lcd) / 2,

                             nrf_gfx_height_get(p_lcd) / nrf_gfx_width_get(p_lcd),

                             nrf_gfx_height_get(p_lcd),

                             BORDER);

    nrf_gfx_rect_t my_rect_fill = NRF_GFX_RECT(nrf_gfx_width_get(p_lcd) / 2,

                                  nrf_gfx_height_get(p_lcd) / nrf_gfx_width_get(p_lcd),

                                  nrf_gfx_height_get(p_lcd),

                                  BORDER);

    nrf_gfx_rotation_set(p_lcd, NRF_LCD_ROTATE_90);

    for (uint16_t i = 0, j = 0;

        i <= (nrf_gfx_width_get(p_lcd) - (2 * BORDER)) / 2 &&

        j <= (nrf_gfx_height_get(p_lcd) - (2 * BORDER)) / 2;

        i += 6, j += 8)

    {

        my_rect.x = i;

        my_rect.y = j;

        my_rect_fill.x = i + BORDER;

        my_rect_fill.y = j + BORDER;

        my_rect.width = nrf_gfx_width_get(p_lcd) - i * 2;

        my_rect.height = nrf_gfx_height_get(p_lcd) - j * 2;

        my_rect_fill.width = nrf_gfx_width_get(p_lcd) - i * 2 - (2 * BORDER);

        my_rect_fill.height = nrf_gfx_height_get(p_lcd) - j * 2 - (2 * BORDER);

        // Draw using pseudo-random colors.

        APP_ERROR_CHECK(nrf_gfx_rect_draw(p_lcd, &my_rect, 2, ((i + j) * 10), false));

        APP_ERROR_CHECK(nrf_gfx_rect_draw(p_lcd, &my_rect_fill, 2, (UINT16_MAX - (i + j) * 10), true));

    }

    nrf_gfx_rotation_set(p_lcd, NRF_LCD_ROTATE_0);

}

int main(void)

{

    APP_ERROR_CHECK(NRF_LOG_INIT(NULL));

    NRF_LOG_DEFAULT_BACKENDS_INIT();

    NRF_LOG_INFO("GFX usage example application started.")

    NRF_LOG_FLUSH();

    nrf_gpio_cfg_output(2);

    nrf_gpio_pin_set(2);

    nrf_gpio_cfg_output(0);

    nrf_gpio_pin_set(0);

    gfx_initialization();

    brackground_set();

    text_print("TEST",2,0);

    nrf_delay_ms(1000);

    while (1)

    {

//       screen_clear();

//       line_draw();

//       nrf_delay_ms(1000);

//       screen_clear();

//       circle_draw();

//       nrf_delay_ms(1000);

//       screen_clear();

//       rect_draw();

//       nrf_delay_ms(1000);

    }

}