Use hexeguitar CYD28 SoftSPI (frees VSPI for SD), Random Nerd Tutorials 240x320 feed for LVGL ROTATION_270, and direct UI hit-test for REC/PLAY. Co-authored-by: Cursor <cursoragent@cursor.com>
Recording verified via serial r; 2.8 touch no longer shares VSPI with microSD. Co-authored-by: Cursor <cursoragent@cursor.com>
Co-authored-by: Cursor <cursoragent@cursor.com>
Record 16 kHz mono PCM to microSD /rec, with level meter and DAC2 playback. Co-authored-by: Cursor <cursoragent@cursor.com>