From bec8a5d25c9681e3deea0f9ea4c11452fc4d18de Mon Sep 17 00:00:00 2001 From: marqdevx Date: Mon, 8 Aug 2022 15:14:00 +0200 Subject: [PATCH 1/3] Add Vision Shield bitmap to SD sketch --- .../visionShieldBitmap/visionShieldBitmap.ino | 124 ++++++++++++++++++ 1 file changed, 124 insertions(+) create mode 100644 examples/Vision Shield to SD Card bmp/visionShieldBitmap/visionShieldBitmap.ino diff --git a/examples/Vision Shield to SD Card bmp/visionShieldBitmap/visionShieldBitmap.ino b/examples/Vision Shield to SD Card bmp/visionShieldBitmap/visionShieldBitmap.ino new file mode 100644 index 0000000..c598724 --- /dev/null +++ b/examples/Vision Shield to SD Card bmp/visionShieldBitmap/visionShieldBitmap.ino @@ -0,0 +1,124 @@ +#include "SDMMCBlockDevice.h" // Multi Media Card APIs +#include "FATFileSystem.h" // Mbed API for portable and embedded systems +SDMMCBlockDevice blockDevice; +mbed::FATFileSystem fileSystem("fs"); + +#include "camera.h" // Arduino Mbed Core Camera APIs +#include "himax.h" // Exclusive Camera library for the Portenta Vision Shield +HM01B0 himax; +Camera cam(himax); + +// Settings for our setup +#define RES_H (unsigned int)240 +#define RES_W (unsigned int)320 +#define IMAGE_MODE CAMERA_GRAYSCALE +#define IMAGE_BPP (unsigned int)8 +// Headers info +#define HEADER_FILE_HEADER (unsigned int)14 +#define HEADER_DIB_SIZE (unsigned int)40 +#define HEADER_FULL_SIZE (HEADER_FILE_HEADER + HEADER_DIB_SIZE) +#define PALETTE_SIZE (2 ^ IMAGE_BPP) * 4 // 4 bytes per color + +void setup() +{ + Serial.begin(115200); + while (!Serial) + ; + + // Mount SD Card + mountSD(); + + // Init the cam QVGA, 30FPS, Grayscale + if (!cam.begin(CAMERA_R320x240, IMAGE_MODE, 30)) + { + Serial.println("Unable to find the camera"); + } + + // Save the headers and the image data into the .bmp file + parseData(); +} + +void loop() +{ + while (1) + ; +} + +// Mount File system block +void mountSD() +{ + Serial.println("Mounting SD Card..."); + + int error = fileSystem.mount(&blockDevice); + if (error) + { + Serial.println("No SD Card found"); + while (1) + ; + } +} + +void parseData() +{ + unsigned char *imgData = NULL; + int fileSize = HEADER_FILE_HEADER + RES_W * RES_H; + + FILE *file = fopen("/fs/image.bmp", "w+"); + + // Get a Frame + if (cam.grabFrame(fb, 3000) == 0) + { + // Save the raw image data (8bpp grayscale) + imgData = fb.getBuffer(); + } + else + { + Serial.println("could not grab the frame"); + while (1) + ; + } + // Bitmap structure (Head + DIB Head + ColorMap + binary image) + unsigned char bitmapFileHeader[HEADER_FILE_HEADER]; + unsigned char bitmapDIBHeader[HEADER_DIB_SIZE]; + unsigned char colorMap[PALETTE_SIZE]; // Needed for <=8bpp grayscale bitmaps + + // Set the file headers to 0 + memset(bitmapFileHeader, (unsigned char)(0), HEADER_FILE_HEADER); + memset(bitmapDIBHeader, (unsigned char)(0), HEADER_DIB_SIZE); + memset(colorMap, (unsigned char)(0), PALETTE_SIZE); + + // Write the headers info + // File header + bitmapFileHeader[0] = 'B'; + bitmapFileHeader[1] = 'M'; + bitmapFileHeader[2] = (unsigned char)(fileSize); + bitmapFileHeader[3] = (unsigned char)(fileSize >> 8); + bitmapFileHeader[4] = (unsigned char)(fileSize >> 16); + bitmapFileHeader[5] = (unsigned char)(fileSize >> 24); + bitmapFileHeader[10] = (unsigned char)HEADER_FULL_SIZE + PALETTE_SIZE; + + // Info header + bitmapDIBHeader[0] = (unsigned char)(HEADER_DIB_SIZE); + bitmapDIBHeader[4] = (unsigned char)(RES_W); + bitmapDIBHeader[5] = (unsigned char)(RES_W >> 8); + bitmapDIBHeader[8] = (unsigned char)(RES_H); + bitmapDIBHeader[8] = (unsigned char)(RES_H >> 8); + bitmapDIBHeader[14] = (unsigned char)(IMAGE_BPP); + + // Color palette for grayscale Bitmaps (8bpp) + for (int i = 0; i < (2 ^ IMAGE_BPP); i++) + { + colorMap[i * 4] = i; + colorMap[i * 4 + 1] = i; + colorMap[i * 4 + 2] = i; + } + + // Write theh bitmap file + fwrite(bitmapFileHeader, 1, HEADER_FILE_HEADER, file); + fwrite(bitmapDIBHeader, 1, HEADER_DIB_SIZE, file); + fwrite(colorMap, 1, PALETTE_SIZE, file); // Color map + fwrite(imgData, 1, RES_H * RES_W, file); + + // Close the stream (bitmap file) + fclose(file); +} \ No newline at end of file From aa230536105c95bbbe8c4d8a9cb4e6752467a103 Mon Sep 17 00:00:00 2001 From: marqdevx Date: Mon, 8 Aug 2022 15:19:37 +0200 Subject: [PATCH 2/3] Add new sketch to be compiled --- .github/workflows/compile-examples.yml | 1 + 1 file changed, 1 insertion(+) diff --git a/.github/workflows/compile-examples.yml b/.github/workflows/compile-examples.yml index 454238d..fb3b16a 100644 --- a/.github/workflows/compile-examples.yml +++ b/.github/workflows/compile-examples.yml @@ -45,6 +45,7 @@ jobs: - examples/Portenta H7 as a USB Host/LEDKeyboardController - examples/Portenta H7 as a WiFi Access Point/SimpleWebServer - examples/Setting Up Portenta H7 For Arduino/Blink + - examples/Vision Shield to SD Card bmp/visionShieldBitmap - fqbn: arduino:mbed_portenta:envie_m4 sketch-paths: | From 2972ebee967626f7c65c5e0b146a4cff090d1a8d Mon Sep 17 00:00:00 2001 From: marqdevx Date: Mon, 8 Aug 2022 15:39:35 +0200 Subject: [PATCH 3/3] Fix Vision Shield bitmap sketch --- .../visionShieldBitmap/visionShieldBitmap.ino | 2 ++ 1 file changed, 2 insertions(+) diff --git a/examples/Vision Shield to SD Card bmp/visionShieldBitmap/visionShieldBitmap.ino b/examples/Vision Shield to SD Card bmp/visionShieldBitmap/visionShieldBitmap.ino index c598724..a571cf6 100644 --- a/examples/Vision Shield to SD Card bmp/visionShieldBitmap/visionShieldBitmap.ino +++ b/examples/Vision Shield to SD Card bmp/visionShieldBitmap/visionShieldBitmap.ino @@ -8,6 +8,8 @@ mbed::FATFileSystem fileSystem("fs"); HM01B0 himax; Camera cam(himax); +FrameBuffer fb; // Buffer to save the capture + // Settings for our setup #define RES_H (unsigned int)240 #define RES_W (unsigned int)320