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fix 'white' byte for dotstars

This commit is contained in:
Roy Hooper 2019-08-04 11:02:33 -04:00
parent 5c08182c73
commit 3cf9a475b9
2 changed files with 4 additions and 4 deletions
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4
shared-bindings/_pixelbuf/PixelBuf.c
View File

@ -119,8 +119,7 @@ STATIC mp_obj_t pixelbuf_pixelbuf_make_new(const mp_obj_type_t *type, size_t n_a
byteorder_details.byteorder.r = r - byteorder;
byteorder_details.byteorder.g = g - byteorder;
byteorder_details.byteorder.b = b - byteorder;
if (w)
byteorder_details.byteorder.w = w - byteorder;
byteorder_details.byteorder.w = w ? w - byteorder : 0;
// The dotstar brightness byte is always first (as it goes with the pixel start bits)
// if 'D' is found at the end, adjust byte position
// if 'D' is elsewhere, error out
@ -130,6 +129,7 @@ STATIC mp_obj_t pixelbuf_pixelbuf_make_new(const mp_obj_type_t *type, size_t n_a
byteorder_details.byteorder.b += 1;
byteorder_details.byteorder.g += 1;
byteorder_details.byteorder.r += 1;
byteorder_details.byteorder.w = 0;
} else if (dotstar_pos != 0) {
mp_raise_ValueError(translate("Invalid byteorder string"));
}

4
shared-module/_pixelbuf/PixelBuf.c
View File

@ -47,11 +47,11 @@ void pixelbuf_set_pixel(uint8_t *buf, uint8_t *rawbuf, float brightness, mp_obj_
if (MP_OBJ_IS_INT(item)) {
uint8_t *target = rawbuf ? rawbuf : buf;
pixelbuf_set_pixel_int(target, mp_obj_get_int_truncated(item), byteorder);
if (dotstar) {
if (dotstar) {
buf[0] = DOTSTAR_LED_START_FULL_BRIGHT;
if (rawbuf)
rawbuf[0] = DOTSTAR_LED_START_FULL_BRIGHT;
}
}
if (rawbuf) {
buf[byteorder->byteorder.r] = rawbuf[byteorder->byteorder.r] * brightness;
buf[byteorder->byteorder.g] = rawbuf[byteorder->byteorder.g] * brightness;