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- //
- // ZIP library example sketch
- //
- // Written by Larry Bank
- // June 9, 2021
- //
- // This example shows how to do the following:
- // - Step through all of the files in a ZIP archive
- // - Display the name of each file
- // - Allocate a buffer for the uncompressed file size
- // - Read (decompress) the data into the buffer
- // - Display the results (in this case a BMP file) on the SPI LCD
- //
- #include <unzipLIB.h>
- #include <bb_spi_lcd.h>
- // Set these to the appropriate values for your SPI LCD display
- // -1 means the pin is not connected
- // The CLK and MOSI pins might be -1 for your board if it has a default SPI setup
- #define TFT_CS 10
- #define TFT_RST -1
- #define TFT_DC 9
- #define TFT_CLK 13
- #define TFT_MOSI 11
- // Use a zip file in memory for this test
- #include "bmp_icons.h"
- UNZIP zip; // Statically allocate the 41K UNZIP class/structure
- SPILCD lcd; // my display library
- void setup() {
- Serial.begin(115200);
- delay(1000); // give Serial a little time to start
- spilcdInit(&lcd, LCD_ILI9341, FLAGS_NONE, 40000000, TFT_CS, TFT_DC, TFT_RST, -1, -1, TFT_MOSI, TFT_CLK);
- spilcdSetOrientation(&lcd, LCD_ORIENTATION_90); // for the ILI9341 it's nice to use it in 320x240 orientation
- }
- void loop() {
- int rc, x, y;
- char szComment[256], szName[256];
- unz_file_info fi;
- uint8_t *ucBitmap; // temp storage for each icon bitmap
- spilcdFill(&lcd, 0, DRAW_TO_LCD); // Erase the display to black
- spilcdWriteString(&lcd, 0, 0, (char *)"Unzip BMP Files Test", 0xffff, 0, FONT_12x16, DRAW_TO_LCD); // white text on a black background
- x = 0; y = 24; // starting point to draw bitmaps
- rc = zip.openZIP((uint8_t *)bmp_icons, sizeof(bmp_icons));
- if (rc == UNZ_OK) {
- rc = zip.getGlobalComment(szComment, sizeof(szComment));
- Serial.print("Global comment: ");
- Serial.println(szComment);
- zip.gotoFirstFile();
- rc = UNZ_OK;
- while (rc == UNZ_OK) { // Display all files contained in the archive
- rc = zip.getFileInfo(&fi, szName, sizeof(szName), NULL, 0, szComment, sizeof(szComment));
- if (rc == UNZ_OK) {
- ucBitmap = (uint8_t *)malloc(fi.uncompressed_size); // allocate enough to hold the bitmap
- if (ucBitmap != NULL) { // malloc succeeded (it should, these bitmaps are only 2K bytes each)
- zip.openCurrentFile(); // if you don't open it explicitly, readCurrentFile will fail with UNZ_PARAMERROR
- spilcdWriteString(&lcd, 0, 224, " ", 0xff1f, 0, FONT_12x16, DRAW_TO_LCD); // erase old name
- spilcdWriteString(&lcd, 0, 224, szName, 0xff1f, 0, FONT_12x16, DRAW_TO_LCD); // display current file name at the bottom
- rc = zip.readCurrentFile(ucBitmap, 2102); // we know the uncompressed size of these BMP images
- if (rc != fi.uncompressed_size) {
- Serial.print("Read error, rc=");
- Serial.println(rc, DEC);
- }
- spilcdDrawBMP(&lcd, ucBitmap, x, y, 1, -1, DRAW_TO_LCD); // Display the BMP file stretched 2X starting at (x,y)
- x += 64; // Draw them across the display from left to right
- if (x >= 256) { // move down for the next row
- x = 0;
- y += 64;
- }
- free(ucBitmap); // finished with this bitmap
- }
- delay(1000); // Allow time to see it happen, otherwise it will zip by too quickly
- }
- rc = zip.gotoNextFile();
- }
- zip.closeZIP();
- }
- // while (1) {};
- }
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