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https://github.com/RIOT-OS/RIOT.git
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117 lines
3.1 KiB
C
117 lines
3.1 KiB
C
/*
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* Copyright (C) 2021 Inria
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*
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* This file is subject to the terms and conditions of the GNU Lesser
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* General Public License v2.1. See the file LICENSE in the top level
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* directory for more details.
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*/
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/**
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* @ingroup tests
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* @{
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*
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* @file
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* @brief Test application for the qr-code-generator package
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*
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* @author Alexandre Abadie <alexandre.abadie@inria.fr>
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*
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* @}
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*/
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#include <stdio.h>
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#include <stdbool.h>
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#include <stdint.h>
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#include "test_utils/expect.h"
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#include "qrcodegen.h"
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#ifdef MODULE_DISP_DEV
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#include "disp_dev.h"
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#endif
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#ifndef MESSAGE_TO_ENCODE
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#define MESSAGE_TO_ENCODE "unknown"
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#endif
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/* Compute buffer sizes based on the message to encode len to avoid a
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* failed assertion in qrcodegen */
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#define ENCODER_VERSION (sizeof(MESSAGE_TO_ENCODE) >> 3)
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static uint8_t qr0[qrcodegen_BUFFER_LEN_FOR_VERSION(ENCODER_VERSION)];
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static uint8_t buffer[qrcodegen_BUFFER_LEN_FOR_VERSION(ENCODER_VERSION)];
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#ifdef MODULE_DISP_DEV
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#ifdef LCD_SCREEN_WIDTH
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#define DISPLAY_BUFFER_MAX_SIZE (LCD_SCREEN_WIDTH)
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#else
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#define DISPLAY_BUFFER_MAX_SIZE (320)
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#endif
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static uint16_t display_buffer[DISPLAY_BUFFER_MAX_SIZE] = { 0 };
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#endif
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int main(void)
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{
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expect(ENCODER_VERSION <= qrcodegen_VERSION_MAX);
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if (!qrcodegen_encodeText(MESSAGE_TO_ENCODE,
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buffer, qr0, qrcodegen_Ecc_MEDIUM,
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qrcodegen_VERSION_MIN, qrcodegen_VERSION_MAX,
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qrcodegen_Mask_AUTO, true)) {
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puts("Encoding error");
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return -1;
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}
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int size = qrcodegen_getSize(qr0);
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#ifdef MODULE_DISP_DEV
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/* Use the first screen */
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disp_dev_reg_t *disp_dev = disp_dev_reg_find_screen(0);
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if (!disp_dev) {
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puts("No screen found!");
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return -1;
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}
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disp_dev_backlight_on();
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/* Compute scaling factor and height/width offsets */
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const uint8_t scale = disp_dev_height(disp_dev->dev) / size;
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const uint8_t w_offset = (disp_dev_width(disp_dev->dev) - (size * scale)) / 2;
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const uint8_t h_offset = (disp_dev_height(disp_dev->dev) - (size * scale)) / 2;
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/* Clear the screen */
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disp_dev_area_t area;
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for (uint16_t y = 0; y < disp_dev_height(disp_dev->dev); y ++) {
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area.x1 = 0;
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area.x2 = disp_dev_width(disp_dev->dev) - 1;
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area.y1 = area.y2 = y;
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disp_dev_map(disp_dev->dev, &area, display_buffer);
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}
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/* Prepare a subset of the display buffer for white tiles */
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for (int w = 0; w < scale; w++) {
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for (int h = 0; h < scale; h++) {
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display_buffer[w + h * scale] = UINT16_MAX;
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}
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}
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#endif
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for (int y = 0; y < size; y++) {
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for (int x = 0; x < size; x++) {
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#ifdef MODULE_DISP_DEV
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if (qrcodegen_getModule(qr0, x, y)) {
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area.x1 = w_offset + (x * scale);
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area.x2 = w_offset + ((x + 1)* scale) - 1;
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area.y1 = h_offset + (y * scale);
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area.y2 = h_offset + ((y + 1)* scale) - 1;
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disp_dev_map(disp_dev->dev, &area, display_buffer);
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}
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#endif
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printf("%s", qrcodegen_getModule(qr0, x, y) ? "██" : " ");
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}
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puts("");
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}
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return 0;
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}
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