1 files changed, 64 insertions, 0 deletions
diff --git a/pw_digital_io_rp2040/digital_io.cc b/pw_digital_io_rp2040/digital_io.cc
new file mode 100644
index 000000000..b6baeb71a
--- /dev/null
+++ b/pw_digital_io_rp2040/digital_io.cc
@@ -0,0 +1,64 @@
+// Copyright 2023 The Pigweed Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License"); you may not
+// use this file except in compliance with the License. You may obtain a copy of
+// the License at
+//
+//     https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+// License for the specific language governing permissions and limitations under
+// the License.
+
+#include "pw_digital_io_rp2040/digital_io.h"
+
+#include "hardware/gpio.h"
+#include "pico/stdlib.h"
+#include "pw_status/status.h"
+
+namespace pw::digital_io {
+
+Rp2040DigitalIn::Rp2040DigitalIn(uint32_t pin) : pin_(pin) {}
+
+Status Rp2040DigitalIn::DoEnable(bool enable) {
+  if (!enable) {
+    gpio_deinit(pin_);
+    return OkStatus();
+  }
+
+  gpio_init(pin_);
+  gpio_set_dir(pin_, GPIO_IN);
+  return OkStatus();
+}
+
+Result<State> Rp2040DigitalIn::DoGetState() {
+  const pw::Result<State> result(State(gpio_get(pin_)));
+  return result;
+}
+
+Rp2040DigitalInOut::Rp2040DigitalInOut(uint32_t pin) : pin_(pin) {}
+
+Status Rp2040DigitalInOut::DoEnable(bool enable) {
+  if (!enable) {
+    gpio_deinit(pin_);
+    return OkStatus();
+  }
+
+  gpio_init(pin_);
+  gpio_set_dir(pin_, GPIO_OUT);
+  return OkStatus();
+}
+
+Status Rp2040DigitalInOut::DoSetState(State level) {
+  gpio_put(pin_, level == State::kActive);
+  return OkStatus();
+}
+
+Result<State> Rp2040DigitalInOut::DoGetState() {
+  const pw::Result<State> result(State(gpio_get(pin_)));
+  return result;
+}
+
+}  // namespace pw::digital_io