diff --git a/tools/gendoc.py b/tools/gendoc.py
deleted file mode 100644
index 0f13056995..0000000000
--- a/tools/gendoc.py
+++ /dev/null
@@ -1,551 +0,0 @@
-"""
-Generate documentation for pyboard API from C files.
-"""
-
-import os
-import argparse
-import re
-import markdown
-
-# given a list of (name,regex) pairs, find the first one that matches the given line
-def re_match_first(regexs, line):
-    for name, regex in regexs:
-        match = re.match(regex, line)
-        if match:
-            return name, match
-    return None, None
-
-
-def makedirs(d):
-    if not os.path.isdir(d):
-        os.makedirs(d)
-
-
-class Lexer:
-    class LexerError(Exception):
-        pass
-
-    class EOF(Exception):
-        pass
-
-    class Break(Exception):
-        pass
-
-    def __init__(self, file):
-        self.filename = file
-        with open(file, "rt") as f:
-            line_num = 0
-            lines = []
-            for line in f:
-                line_num += 1
-                line = line.strip()
-                if line == "///":
-                    lines.append((line_num, ""))
-                elif line.startswith("/// "):
-                    lines.append((line_num, line[4:]))
-                elif len(lines) > 0 and lines[-1][1] is not None:
-                    lines.append((line_num, None))
-        if len(lines) > 0 and lines[-1][1] is not None:
-            lines.append((line_num, None))
-        self.cur_line = 0
-        self.lines = lines
-
-    def opt_break(self):
-        if len(self.lines) > 0 and self.lines[0][1] is None:
-            self.lines.pop(0)
-
-    def next(self):
-        if len(self.lines) == 0:
-            raise Lexer.EOF
-        else:
-            l = self.lines.pop(0)
-            self.cur_line = l[0]
-            if l[1] is None:
-                raise Lexer.Break
-            else:
-                return l[1]
-
-    def error(self, msg):
-        print("({}:{}) {}".format(self.filename, self.cur_line, msg))
-        raise Lexer.LexerError
-
-
-class MarkdownWriter:
-    def __init__(self):
-        pass
-
-    def start(self):
-        self.lines = []
-
-    def end(self):
-        return "\n".join(self.lines)
-
-    def heading(self, level, text):
-        if len(self.lines) > 0:
-            self.lines.append("")
-        self.lines.append(level * "#" + " " + text)
-        self.lines.append("")
-
-    def para(self, text):
-        if len(self.lines) > 0 and self.lines[-1] != "":
-            self.lines.append("")
-        if isinstance(text, list):
-            self.lines.extend(text)
-        elif isinstance(text, str):
-            self.lines.append(text)
-        else:
-            assert False
-        self.lines.append("")
-
-    def single_line(self, text):
-        self.lines.append(text)
-
-    def module(self, name, short_descr, descr):
-        self.heading(1, "module {}".format(name))
-        self.para(descr)
-
-    def function(self, ctx, name, args, descr):
-        proto = "{}.{}{}".format(ctx, self.name, self.args)
-        self.heading(3, "`" + proto + "`")
-        self.para(descr)
-
-    def method(self, ctx, name, args, descr):
-        if name == "\\constructor":
-            proto = "{}{}".format(ctx, args)
-        elif name == "\\call":
-            proto = "{}{}".format(ctx, args)
-        else:
-            proto = "{}.{}{}".format(ctx, name, args)
-        self.heading(3, "`" + proto + "`")
-        self.para(descr)
-
-    def constant(self, ctx, name, descr):
-        self.single_line("`{}.{}` - {}".format(ctx, name, descr))
-
-
-class ReStructuredTextWriter:
-    head_chars = {1: "=", 2: "-", 3: "."}
-
-    def __init__(self):
-        pass
-
-    def start(self):
-        self.lines = []
-
-    def end(self):
-        return "\n".join(self.lines)
-
-    def _convert(self, text):
-        return text.replace("`", "``").replace("*", "\\*")
-
-    def heading(self, level, text, convert=True):
-        if len(self.lines) > 0:
-            self.lines.append("")
-        if convert:
-            text = self._convert(text)
-        self.lines.append(text)
-        self.lines.append(len(text) * self.head_chars[level])
-        self.lines.append("")
-
-    def para(self, text, indent=""):
-        if len(self.lines) > 0 and self.lines[-1] != "":
-            self.lines.append("")
-        if isinstance(text, list):
-            for t in text:
-                self.lines.append(indent + self._convert(t))
-        elif isinstance(text, str):
-            self.lines.append(indent + self._convert(text))
-        else:
-            assert False
-        self.lines.append("")
-
-    def single_line(self, text):
-        self.lines.append(self._convert(text))
-
-    def module(self, name, short_descr, descr):
-        self.heading(1, ":mod:`{}` --- {}".format(name, self._convert(short_descr)), convert=False)
-        self.lines.append(".. module:: {}".format(name))
-        self.lines.append("   :synopsis: {}".format(short_descr))
-        self.para(descr)
-
-    def function(self, ctx, name, args, descr):
-        args = self._convert(args)
-        self.lines.append(".. function:: " + name + args)
-        self.para(descr, indent="   ")
-
-    def method(self, ctx, name, args, descr):
-        args = self._convert(args)
-        if name == "\\constructor":
-            self.lines.append(".. class:: " + ctx + args)
-        elif name == "\\call":
-            self.lines.append(".. method:: " + ctx + args)
-        else:
-            self.lines.append(".. method:: " + ctx + "." + name + args)
-        self.para(descr, indent="   ")
-
-    def constant(self, ctx, name, descr):
-        self.lines.append(".. data:: " + name)
-        self.para(descr, indent="   ")
-
-
-class DocValidateError(Exception):
-    pass
-
-
-class DocItem:
-    def __init__(self):
-        self.doc = []
-
-    def add_doc(self, lex):
-        try:
-            while True:
-                line = lex.next()
-                if len(line) > 0 or len(self.doc) > 0:
-                    self.doc.append(line)
-        except Lexer.Break:
-            pass
-
-    def dump(self, writer):
-        writer.para(self.doc)
-
-
-class DocConstant(DocItem):
-    def __init__(self, name, descr):
-        super().__init__()
-        self.name = name
-        self.descr = descr
-
-    def dump(self, ctx, writer):
-        writer.constant(ctx, self.name, self.descr)
-
-
-class DocFunction(DocItem):
-    def __init__(self, name, args):
-        super().__init__()
-        self.name = name
-        self.args = args
-
-    def dump(self, ctx, writer):
-        writer.function(ctx, self.name, self.args, self.doc)
-
-
-class DocMethod(DocItem):
-    def __init__(self, name, args):
-        super().__init__()
-        self.name = name
-        self.args = args
-
-    def dump(self, ctx, writer):
-        writer.method(ctx, self.name, self.args, self.doc)
-
-
-class DocClass(DocItem):
-    def __init__(self, name, descr):
-        super().__init__()
-        self.name = name
-        self.descr = descr
-        self.constructors = {}
-        self.classmethods = {}
-        self.methods = {}
-        self.constants = {}
-
-    def process_classmethod(self, lex, d):
-        name = d["id"]
-        if name == "\\constructor":
-            dict_ = self.constructors
-        else:
-            dict_ = self.classmethods
-        if name in dict_:
-            lex.error("multiple definition of method '{}'".format(name))
-        method = dict_[name] = DocMethod(name, d["args"])
-        method.add_doc(lex)
-
-    def process_method(self, lex, d):
-        name = d["id"]
-        dict_ = self.methods
-        if name in dict_:
-            lex.error("multiple definition of method '{}'".format(name))
-        method = dict_[name] = DocMethod(name, d["args"])
-        method.add_doc(lex)
-
-    def process_constant(self, lex, d):
-        name = d["id"]
-        if name in self.constants:
-            lex.error("multiple definition of constant '{}'".format(name))
-        self.constants[name] = DocConstant(name, d["descr"])
-        lex.opt_break()
-
-    def dump(self, writer):
-        writer.heading(1, "class {}".format(self.name))
-        super().dump(writer)
-        if len(self.constructors) > 0:
-            writer.heading(2, "Constructors")
-            for f in sorted(self.constructors.values(), key=lambda x: x.name):
-                f.dump(self.name, writer)
-        if len(self.classmethods) > 0:
-            writer.heading(2, "Class methods")
-            for f in sorted(self.classmethods.values(), key=lambda x: x.name):
-                f.dump(self.name, writer)
-        if len(self.methods) > 0:
-            writer.heading(2, "Methods")
-            for f in sorted(self.methods.values(), key=lambda x: x.name):
-                f.dump(self.name.lower(), writer)
-        if len(self.constants) > 0:
-            writer.heading(2, "Constants")
-            for c in sorted(self.constants.values(), key=lambda x: x.name):
-                c.dump(self.name, writer)
-
-
-class DocModule(DocItem):
-    def __init__(self, name, descr):
-        super().__init__()
-        self.name = name
-        self.descr = descr
-        self.functions = {}
-        self.constants = {}
-        self.classes = {}
-        self.cur_class = None
-
-    def new_file(self):
-        self.cur_class = None
-
-    def process_function(self, lex, d):
-        name = d["id"]
-        if name in self.functions:
-            lex.error("multiple definition of function '{}'".format(name))
-        function = self.functions[name] = DocFunction(name, d["args"])
-        function.add_doc(lex)
-
-    # def process_classref(self, lex, d):
-    #    name = d['id']
-    #    self.classes[name] = name
-    #    lex.opt_break()
-
-    def process_class(self, lex, d):
-        name = d["id"]
-        if name in self.classes:
-            lex.error("multiple definition of class '{}'".format(name))
-        self.cur_class = self.classes[name] = DocClass(name, d["descr"])
-        self.cur_class.add_doc(lex)
-
-    def process_classmethod(self, lex, d):
-        self.cur_class.process_classmethod(lex, d)
-
-    def process_method(self, lex, d):
-        self.cur_class.process_method(lex, d)
-
-    def process_constant(self, lex, d):
-        if self.cur_class is None:
-            # a module-level constant
-            name = d["id"]
-            if name in self.constants:
-                lex.error("multiple definition of constant '{}'".format(name))
-            self.constants[name] = DocConstant(name, d["descr"])
-            lex.opt_break()
-        else:
-            # a class-level constant
-            self.cur_class.process_constant(lex, d)
-
-    def validate(self):
-        if self.descr is None:
-            raise DocValidateError("module {} referenced but never defined".format(self.name))
-
-    def dump(self, writer):
-        writer.module(self.name, self.descr, self.doc)
-        if self.functions:
-            writer.heading(2, "Functions")
-            for f in sorted(self.functions.values(), key=lambda x: x.name):
-                f.dump(self.name, writer)
-        if self.constants:
-            writer.heading(2, "Constants")
-            for c in sorted(self.constants.values(), key=lambda x: x.name):
-                c.dump(self.name, writer)
-        if self.classes:
-            writer.heading(2, "Classes")
-            for c in sorted(self.classes.values(), key=lambda x: x.name):
-                writer.para("[`{}.{}`]({}) - {}".format(self.name, c.name, c.name, c.descr))
-
-    def write_html(self, dir):
-        md_writer = MarkdownWriter()
-        md_writer.start()
-        self.dump(md_writer)
-        with open(os.path.join(dir, "index.html"), "wt") as f:
-            f.write(markdown.markdown(md_writer.end()))
-        for c in self.classes.values():
-            class_dir = os.path.join(dir, c.name)
-            makedirs(class_dir)
-            md_writer.start()
-            md_writer.para("part of the [{} module](./)".format(self.name))
-            c.dump(md_writer)
-            with open(os.path.join(class_dir, "index.html"), "wt") as f:
-                f.write(markdown.markdown(md_writer.end()))
-
-    def write_rst(self, dir):
-        rst_writer = ReStructuredTextWriter()
-        rst_writer.start()
-        self.dump(rst_writer)
-        with open(dir + "/" + self.name + ".rst", "wt") as f:
-            f.write(rst_writer.end())
-        for c in self.classes.values():
-            rst_writer.start()
-            c.dump(rst_writer)
-            with open(dir + "/" + self.name + "." + c.name + ".rst", "wt") as f:
-                f.write(rst_writer.end())
-
-
-class Doc:
-    def __init__(self):
-        self.modules = {}
-        self.cur_module = None
-
-    def new_file(self):
-        self.cur_module = None
-        for m in self.modules.values():
-            m.new_file()
-
-    def check_module(self, lex):
-        if self.cur_module is None:
-            lex.error("module not defined")
-
-    def process_module(self, lex, d):
-        name = d["id"]
-        if name not in self.modules:
-            self.modules[name] = DocModule(name, None)
-        self.cur_module = self.modules[name]
-        if self.cur_module.descr is not None:
-            lex.error("multiple definition of module '{}'".format(name))
-        self.cur_module.descr = d["descr"]
-        self.cur_module.add_doc(lex)
-
-    def process_moduleref(self, lex, d):
-        name = d["id"]
-        if name not in self.modules:
-            self.modules[name] = DocModule(name, None)
-        self.cur_module = self.modules[name]
-        lex.opt_break()
-
-    def process_class(self, lex, d):
-        self.check_module(lex)
-        self.cur_module.process_class(lex, d)
-
-    def process_function(self, lex, d):
-        self.check_module(lex)
-        self.cur_module.process_function(lex, d)
-
-    def process_classmethod(self, lex, d):
-        self.check_module(lex)
-        self.cur_module.process_classmethod(lex, d)
-
-    def process_method(self, lex, d):
-        self.check_module(lex)
-        self.cur_module.process_method(lex, d)
-
-    def process_constant(self, lex, d):
-        self.check_module(lex)
-        self.cur_module.process_constant(lex, d)
-
-    def validate(self):
-        for m in self.modules.values():
-            m.validate()
-
-    def dump(self, writer):
-        writer.heading(1, "Modules")
-        writer.para("These are the Python modules that are implemented.")
-        for m in sorted(self.modules.values(), key=lambda x: x.name):
-            writer.para("[`{}`]({}/) - {}".format(m.name, m.name, m.descr))
-
-    def write_html(self, dir):
-        md_writer = MarkdownWriter()
-        with open(os.path.join(dir, "module", "index.html"), "wt") as f:
-            md_writer.start()
-            self.dump(md_writer)
-            f.write(markdown.markdown(md_writer.end()))
-        for m in self.modules.values():
-            mod_dir = os.path.join(dir, "module", m.name)
-            makedirs(mod_dir)
-            m.write_html(mod_dir)
-
-    def write_rst(self, dir):
-        # with open(os.path.join(dir, 'module', 'index.html'), 'wt') as f:
-        #    f.write(markdown.markdown(self.dump()))
-        for m in self.modules.values():
-            m.write_rst(dir)
-
-
-regex_descr = r"(?P<descr>.*)"
-
-doc_regexs = (
-    (Doc.process_module, re.compile(r"\\module (?P<id>[a-z][a-z0-9]*) - " + regex_descr + r"$")),
-    (Doc.process_moduleref, re.compile(r"\\moduleref (?P<id>[a-z]+)$")),
-    (Doc.process_function, re.compile(r"\\function (?P<id>[a-z0-9_]+)(?P<args>\(.*\))$")),
-    (Doc.process_classmethod, re.compile(r"\\classmethod (?P<id>\\?[a-z0-9_]+)(?P<args>\(.*\))$")),
-    (Doc.process_method, re.compile(r"\\method (?P<id>\\?[a-z0-9_]+)(?P<args>\(.*\))$")),
-    (
-        Doc.process_constant,
-        re.compile(r"\\constant (?P<id>[A-Za-z0-9_]+) - " + regex_descr + r"$"),
-    ),
-    # (Doc.process_classref, re.compile(r'\\classref (?P<id>[A-Za-z0-9_]+)$')),
-    (Doc.process_class, re.compile(r"\\class (?P<id>[A-Za-z0-9_]+) - " + regex_descr + r"$")),
-)
-
-
-def process_file(file, doc):
-    lex = Lexer(file)
-    doc.new_file()
-    try:
-        try:
-            while True:
-                line = lex.next()
-                fun, match = re_match_first(doc_regexs, line)
-                if fun == None:
-                    lex.error("unknown line format: {}".format(line))
-                fun(doc, lex, match.groupdict())
-
-        except Lexer.Break:
-            lex.error("unexpected break")
-
-        except Lexer.EOF:
-            pass
-
-    except Lexer.LexerError:
-        return False
-
-    return True
-
-
-def main():
-    cmd_parser = argparse.ArgumentParser(
-        description="Generate documentation for pyboard API from C files."
-    )
-    cmd_parser.add_argument(
-        "--outdir", metavar="<output dir>", default="gendoc-out", help="ouput directory"
-    )
-    cmd_parser.add_argument("--format", default="html", help="output format: html or rst")
-    cmd_parser.add_argument("files", nargs="+", help="input files")
-    args = cmd_parser.parse_args()
-
-    doc = Doc()
-    for file in args.files:
-        print("processing", file)
-        if not process_file(file, doc):
-            return
-    try:
-        doc.validate()
-    except DocValidateError as e:
-        print(e)
-
-    makedirs(args.outdir)
-
-    if args.format == "html":
-        doc.write_html(args.outdir)
-    elif args.format == "rst":
-        doc.write_rst(args.outdir)
-    else:
-        print("unknown format:", args.format)
-        return
-
-    print("written to", args.outdir)
-
-
-if __name__ == "__main__":
-    main()