There is Adlam for Fulani [1]. Widely spoken in west Africa. However, I'm still trying to familiarize myself with the writing system. The word for "yes" in fulani does not translate in writing. The best way I can write it is HIiiII. Imagine the lowercase i goes down in tone. Then the last two uppercase i shoots up. I don't know if any writing system supports this.
[1]: https://en.m.wikipedia.org/wiki/Adlam_script