TizenRT support for UART (#970)

IoT.js-DCO-1.0-Signed-off-by: Konrad Lipner [email protected]

Author: kolipka

src/platform/tizenrt/iotjs_module_uart-tizenrt.c

@@ -0,0 +1,77 @@
+/* Copyright 2017-present Samsung Electronics Co., Ltd. and other contributors
+ *
+ * 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
+ *
+ *     http://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.
+ */
+
+#if defined(__TIZENRT__)
+
+
+#include "modules/iotjs_module_uart.h"
+
+void iotjs_uart_open_worker(uv_work_t* work_req) {
+  UART_WORKER_INIT;
+  IOTJS_VALIDATED_STRUCT_METHOD(iotjs_uart_t, uart);
+
+  int fd = open(iotjs_string_data(&_this->device_path),
+                O_RDWR | O_NOCTTY | O_NDELAY);
+
+  if (fd < 0) {
+    req_data->result = false;
+    return;
+  }
+
+  _this->device_fd = fd;
+  uv_poll_t* poll_handle = &_this->poll_handle;
+
+  uv_loop_t* loop = iotjs_environment_loop(iotjs_environment_get());
+  uv_poll_init(loop, poll_handle, fd);
+  poll_handle->data = uart;
+  uv_poll_start(poll_handle, UV_READABLE, iotjs_uart_read_cb);
+
+  req_data->result = true;
+}
+
+
+bool iotjs_uart_write(iotjs_uart_t* uart) {
+  IOTJS_VALIDATED_STRUCT_METHOD(iotjs_uart_t, uart);
+  int bytesWritten = 0;
+  unsigned offset = 0;
+  int fd = _this->device_fd;
+  const char* buf_data = iotjs_string_data(&_this->buf_data);
+
+  DDDLOG("%s - data: %s", __func__, buf_data);
+
+  do {
+    errno = 0;
+    bytesWritten = write(fd, buf_data + offset, _this->buf_len - offset);
+
+    DDDLOG("%s - size: %d", __func__, _this->buf_len - offset);
+
+    if (bytesWritten != -1) {
+      offset += (unsigned)bytesWritten;
+      continue;
+    }
+
+    if (errno == EINTR) {
+      continue;
+    }
+
+    return false;
+
+  } while (_this->buf_len > offset);
+
+  return true;
+}
+
+
+#endif // __TIZENRT__

test/run_pass/test_uart.js

@@ -27,6 +27,8 @@ if (process.platform === 'linux') {
   configuration.device = '/dev/ttyS0';
 } else if (process.platform === 'nuttx') {
   configuration.device = '/dev/ttyS1';
+} else if (process.platform === 'tizenrt') {
+  configuration.device = '/dev/ttyDBG';
 } else {
   assert.fail();
 }