The first commit just fixes a typo ws2821 -> ws2812.
The second commit changes rmt_item32_s into rmt_item32_t. rmt_item32_t is the correct type according to the ESP-IDF docs.
rmt_item32_s worked fine on the Xtensa based ESPs, since there bindgen generated a type with that name, But that generated type does not exist in esp-idf-sys when built for the RISC-V based ESP32-C3 models. I guess it could be up to exact bindgen version used or some other minor quirk. Anyway rmt_item32_s is just something bindgen made up from what I can find.
The first commit just fixes a typo
ws2821->ws2812.The second commit changes
rmt_item32_sintormt_item32_t.rmt_item32_tis the correct type according to the ESP-IDF docs.rmt_item32_sworked fine on the Xtensa based ESPs, since there bindgen generated a type with that name, But that generated type does not exist in esp-idf-sys when built for the RISC-V based ESP32-C3 models. I guess it could be up to exact bindgen version used or some other minor quirk. Anywayrmt_item32_sis just something bindgen made up from what I can find.