1 files changed, 5 insertions, 6 deletions
diff --git a/main/jpeg_decoder.c b/main/jpeg_decoder.c
index 259af65..f2a7d92 100644
--- a/main/jpeg_decoder.c
+++ b/main/jpeg_decoder.c
@@ -70,12 +70,11 @@ esp_err_t jpeg_decoder_decode(size_t   jpeg_len,
 
     jpeg_decode_cfg_t dec_cfg = {
         .output_format = JPEG_DECODE_OUT_FORMAT_RGB565,
-        .rgb_order     = JPEG_DEC_RGB_ELEMENT_ORDER_RGB,
-        // TODO: known color bug on M5 — solid red renders correctly but solid
-        // green renders ~black and solid blue renders green. Likely a JPEG
-        // colorspace / channel-permutation issue, not a byte-order one
-        // (swapping to BGR turns red into blue, confirming RGB is the right
-        // element ordering). Needs follow-up.
+        // Empirically: _RGB emits the RGB565 word in big-endian byte order
+        // (red 0xF800 → bytes f8 00) which our LE uint16 painter reads
+        // swapped. _BGR emits little-endian to match (despite the
+        // misleading "BGR" name) — verified by the decode-byte dump.
+        .rgb_order     = JPEG_DEC_RGB_ELEMENT_ORDER_BGR,
         .conv_std      = JPEG_YUV_RGB_CONV_STD_BT601,
     };