kopia lustrzana https://github.com/espressif/esp-idf
122 wiersze
3.5 KiB
C
122 wiersze
3.5 KiB
C
// Copyright 2020 Espressif Systems (Shanghai) PTE LTD
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include <stdio.h>
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#include <esp_err.h>
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#include "esp_log.h"
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#include "qrcodegen.h"
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#include "qrcode.h"
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static const char *TAG = "QRCODE";
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static const char *lt[] = {
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/* 0 */ " ",
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/* 1 */ "\u2580 ",
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/* 2 */ " \u2580",
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/* 3 */ "\u2580\u2580",
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/* 4 */ "\u2584 ",
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/* 5 */ "\u2588 ",
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/* 6 */ "\u2584\u2580",
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/* 7 */ "\u2588\u2580",
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/* 8 */ " \u2584",
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/* 9 */ "\u2580\u2584",
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/* 10 */ " \u2588",
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/* 11 */ "\u2580\u2588",
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/* 12 */ "\u2584\u2584",
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/* 13 */ "\u2588\u2584",
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/* 14 */ "\u2584\u2588",
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/* 15 */ "\u2588\u2588",
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};
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void esp_qrcode_print_console(esp_qrcode_handle_t qrcode)
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{
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int size = qrcodegen_getSize(qrcode);
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int border = 2;
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unsigned char num = 0;
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for (int y = -border; y < size + border; y+=2) {
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for (int x = -border; x < size + border; x+=2) {
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num = 0;
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if (qrcodegen_getModule(qrcode, x, y)) {
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num |= 1 << 0;
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}
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if ((x < size + border) && qrcodegen_getModule(qrcode, x+1, y)) {
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num |= 1 << 1;
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}
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if ((y < size + border) && qrcodegen_getModule(qrcode, x, y+1)) {
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num |= 1 << 2;
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}
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if ((x < size + border) && (y < size + border) && qrcodegen_getModule(qrcode, x+1, y+1)) {
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num |= 1 << 3;
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}
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printf("%s", lt[num]);
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}
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printf("\n");
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}
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printf("\n");
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}
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esp_err_t esp_qrcode_generate(esp_qrcode_config_t *cfg, const char *text)
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{
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enum qrcodegen_Ecc ecc_lvl;
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uint8_t *qrcode, *tempbuf;
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esp_err_t err = ESP_FAIL;
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qrcode = calloc(1, qrcodegen_BUFFER_LEN_FOR_VERSION(cfg->max_qrcode_version));
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if (!qrcode) {
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return ESP_ERR_NO_MEM;
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}
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tempbuf = calloc(1, qrcodegen_BUFFER_LEN_FOR_VERSION(cfg->max_qrcode_version));
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if (!tempbuf) {
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free(qrcode);
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return ESP_ERR_NO_MEM;
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}
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switch(cfg->qrcode_ecc_level) {
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case ESP_QRCODE_ECC_LOW:
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ecc_lvl = qrcodegen_Ecc_LOW;
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break;
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case ESP_QRCODE_ECC_MED:
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ecc_lvl = qrcodegen_Ecc_MEDIUM;
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break;
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case ESP_QRCODE_ECC_QUART:
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ecc_lvl = qrcodegen_Ecc_QUARTILE;
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break;
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case ESP_QRCODE_ECC_HIGH:
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ecc_lvl = qrcodegen_Ecc_HIGH;
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break;
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default:
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ecc_lvl = qrcodegen_Ecc_LOW;
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break;
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}
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ESP_LOGI(TAG, "Encoding below text with ECC LVL %d & QR Code Version %d",
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ecc_lvl, cfg->max_qrcode_version);
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ESP_LOGI(TAG, "%s", text);
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// Make and print the QR Code symbol
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bool ok = qrcodegen_encodeText(text, tempbuf, qrcode, ecc_lvl,
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qrcodegen_VERSION_MIN, cfg->max_qrcode_version,
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qrcodegen_Mask_AUTO, true);
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if (ok && cfg->display_func) {
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cfg->display_func((esp_qrcode_handle_t)qrcode);
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err = ESP_OK;
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}
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free(qrcode);
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free(tempbuf);
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return err;
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}
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