73 lines
1.9 KiB
C++
73 lines
1.9 KiB
C++
// This example is a development tool and does not use the display.
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// Print simple representation of ASCII characters for 5x7 fixed fonts.
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//
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#include "SdFat.h"
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#include "SSD1306Ascii.h"
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const char* fontName[] = {
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"Adafruit5x7",
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"font5x7",
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"lcd5x7",
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"Stang5x7",
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"System5x7"
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};
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const uint8_t* fontList[] = {
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Adafruit5x7,
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font5x7,
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lcd5x7,
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Stang5x7,
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System5x7
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};
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const uint8_t nFont = sizeof(fontList)/sizeof(const char*);
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SdFat sd;
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SdFile file;
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//------------------------------------------------------------------------------
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// return bitmap for a character
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void charBitmap(const uint8_t* font, uint8_t c, uint8_t* bits) {
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c -= 32;
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const uint8_t *base = font + 6 + 5 * c;
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for (uint8_t i =0; i < 5; i++ ) {
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bits[i] = pgm_read_byte(base + i);
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}
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}
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//------------------------------------------------------------------------------
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void printChar(const uint8_t*font, uint8_t c) {
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uint8_t bits[192];
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// get bit maps
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for (uint8_t i = 0; i < 32; i++) {
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charBitmap(font, c + i, bits + 6*i);
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bits[6*i + 5] = 0;
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}
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// print characters
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for (uint8_t m = 1; m; m <<= 1) {
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for (uint8_t i = 0; i < 192; i++) {
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file.write(bits[i] & m ? 'X' : ' ');
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}
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file.println();
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}
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}
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//------------------------------------------------------------------------------
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void setup() {
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Serial.begin(9600);
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if (!sd.begin()) {
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Serial.println("begin error");
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return;
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}
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char name[] = "5x7fonts.txt";
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if (!file.open(name, O_CREAT | O_WRITE |O_TRUNC)) {
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Serial.println("OPEN ERROR");
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return;
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}
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for (uint8_t i = 0; i < nFont; i++) {
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file.println();
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file.println(fontName[i]);
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for (uint8_t c = 32; c < 128; c += 32) {
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file.println();
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printChar(fontList[i], c);
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}
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file.println();
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}
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file.close();
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Serial.println("DONE");
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}
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//------------------------------------------------------------------------------
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void loop(){ } |