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Rotated the displayed image because camera is in the back of the TTGO

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This commit is contained in:
Joachim
2020-08-26 11:16:41 +02:00
parent dd2f5f0ca8
commit d2ea7d585c
2 changed files with 10 additions and 7 deletions
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10
esp32/examples/ttgo_demo/main/app_screen.cpp
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@ -237,10 +237,8 @@ static UINT tjd_output(
}
}
// ESP_LOGI(TAG, "x1:%d y1:%d x2:%d y2:%d\n", dleft, dtop, dright, dbottom);
tft->transmitCmdData(LCD_CASET, MAKEWORD(dleft >> 8, dleft & 0xFF, dright >> 8, dright & 0xFF));
tft->transmitCmdData(LCD_PASET, MAKEWORD(dtop >> 8, dtop & 0xFF, dbottom >> 8, dbottom & 0xFF));
tft->transmitCmd(LCD_RAMWR); // write to RAM
//ESP_LOGI(TAG, "x1:%d x2:%d y1:%d y2:%d\n", dleft, dright, dtop, dbottom);
tft->setAddrWindow(dleft, dtop, dright, dbottom);
uint16_t *p = (uint16_t *)malloc(sizeof(uint16_t) * len);
if (!p) {
@ -250,7 +248,7 @@ static UINT tjd_output(
for (uint32_t i = 0; i < len; i++) {
p[i] = tft->color565(dev->linbuf[dev->linbuf_idx][i].r, dev->linbuf[dev->linbuf_idx][i].g, dev->linbuf[dev->linbuf_idx][i].b);
}
tft->_fastSendBuf(p, len);
tft->_fastSendBuf(p, len, true); // TODO: Swapping bytes directly in the camera register could enhance display
free(p);
dev->linbuf_idx = ((dev->linbuf_idx + 1) & 1);
@ -450,7 +448,7 @@ void lvgl_lcd_hal_init()
/*screen initialize*/
tft->invertDisplay(true);
tft->setRotation(0);
tft->setRotation(2); // rotation needed if camera is on the back of the device
tft->fillScreen(COLOR_BLACK);
lv_disp_drv_t disp_drv; /*Descriptor of a display driver*/

7
esp32/examples/ttgo_demo/main/main.cpp
View File

@ -41,17 +41,20 @@ void demo_task(void *arg) {
disp_infos();
while(true) {
auto start = esp_timer_get_time();
camera_fb_t *fb = esp_camera_fb_get();
if (!fb) {
ESP_LOGE(TAG, "Camera capture failed");
} else {
TFT_jpg_image(CENTER, 0, 0, -1, NULL, fb->buf, fb->len);
TFT_jpg_image(CENTER, CENTER, 0, -1, NULL, fb->buf, fb->len);
esp_camera_fb_return(fb);
fb = NULL;
}
ESP_LOGI(TAG, "time taken: %lld ms", (esp_timer_get_time() - start) / 1000);
#if 0 // TODO: next step..
Mat inputImage(fb->height, fb->width, CV_8UC2, fb->buf); // rgb565 is 2 channels of 8-bit unsigned
Mat outputImage;
@ -103,6 +106,8 @@ void app_main()
/* Display memory infos */
disp_infos();
ESP_LOGI(TAG, "Display width = %d, height = %d", tft->width(), tft->height());
/* Start the tasks */
xTaskCreatePinnedToCore(demo_task, "demo", 1024 * 9, nullptr, 24, nullptr, 0);
}