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added ssd1306_rotate_image/ssd1306_display_rotate_text function

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nopnop2002 2024-09-12 16:21:27 +09:00
parent 2679f45127
commit 2fa32adea4
2 changed files with 48 additions and 0 deletions
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46
components/ssd1306/ssd1306.c
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@ -672,6 +672,52 @@ void ssd1306_fadeout(SSD1306_t * dev)
}
}
// Rotate character image
// Only valid for 8 dots x 8 dots
void ssd1306_rotate_image(uint8_t *image, bool flip) {
uint8_t _image[8];
uint8_t _smask = 0x01;
for (int i=0;i<8;i++) {
uint8_t _dmask = 0x80;
_image[i] = 0;
for (int j=0;j<8;j++) {
uint8_t _wk = image[j] & _smask;
ESP_LOGD(TAG, "image[%d]=0x%x _smask=0x%x _wk=0x%x", j, image[j], _smask, _wk);
if (_wk != 0) {
_image[i] = _image[i] + _dmask;
}
_dmask = _dmask >> 1;
}
_smask = _smask << 1;
}
for (int i=0;i<8;i++) {
image[i] = _image[i];
}
if (flip) ssd1306_flip(image, 8);
#if 0
for (int i=0;i<8;i++) {
ESP_LOGI(TAG, "image[%d]=0x%x", i, image[i]);
}
#endif
}
void ssd1306_display_rotate_text(SSD1306_t * dev, int seg, char * text, int text_len, bool invert) {
int _text_len = text_len;
if (_text_len > 8) _text_len = 8;
uint8_t image[8];
int _page = dev->_pages-1;
for (uint8_t i = 0; i < _text_len; i++) {
memcpy(image, font8x8_basic_tr[(uint8_t)text[i]], 8);
ssd1306_rotate_image(image, dev->_flip);
ESP_LOGD(TAG, "_page=%d seg=%d", _page, seg);
if (invert) ssd1306_invert(image, 8);
ssd1306_display_image(dev, _page, seg, image, 8);
_page--;
if (_page < 0) return;
}
}
void ssd1306_dump(SSD1306_t dev)
{
printf("_address=%x\n",dev._address);

2
components/ssd1306/ssd1306.h
View File

@ -145,6 +145,8 @@ void ssd1306_flip(uint8_t *buf, size_t blen);
uint8_t ssd1306_copy_bit(uint8_t src, int srcBits, uint8_t dst, int dstBits);
uint8_t ssd1306_rotate_byte(uint8_t ch1);
void ssd1306_fadeout(SSD1306_t * dev);
void ssd1306_rotate_image(uint8_t *image, bool flip);
void ssd1306_display_rotate_text(SSD1306_t * dev, int seg, char * text, int text_len, bool invert);
void ssd1306_dump(SSD1306_t dev);
void ssd1306_dump_page(SSD1306_t * dev, int page, int seg);