tests: uart: Add tests for async UART API.

Added tests for async UART API and test configuration for
nrf52840_pca10056 board.
For tests to work, RX and TX pins have to be connected together
and second UART is needed to output results to console.

Signed-off-by: Mieszko Mierunski <[email protected]>

Author: Mierunski

tests/drivers/uart/uart_async_api/CMakeLists.txt

@@ -0,0 +1,17 @@
+cmake_minimum_required(VERSION 3.8.2)
+
+macro(set_conf_file)
+  if(EXISTS               ${APPLICATION_SOURCE_DIR}/boards/${BOARD}.conf)
+    set(CONF_FILE "prj.conf ${APPLICATION_SOURCE_DIR}/boards/${BOARD}.conf")
+  else()
+    set(CONF_FILE "prj.conf")
+  endif()
+endmacro()
+
+include($ENV{ZEPHYR_BASE}/cmake/app/boilerplate.cmake NO_POLICY_SCOPE)
+project(uart_high_level_api)
+
+target_sources(app PRIVATE
+    src/main.c
+    src/test_uart_async.c
+    )

tests/drivers/uart/uart_async_api/boards/nrf52840_pca10056.conf

@@ -0,0 +1 @@
+CONFIG_UART_1_NRF_UARTE=y

tests/drivers/uart/uart_async_api/nrf52840_pca10056.overlay

@@ -0,0 +1,24 @@
+/ {
+	chosen {
+		zephyr,console = &uart1;
+	};
+};
+
+&uart1 {
+	current-speed = <115200>;
+	status = "ok";
+	tx-pin = <6>;
+	rx-pin = <8>;
+	rts-pin = <0>;
+	cts-pin = <0>;
+};
+
+&uart0 {
+	compatible = "nordic,nrf-uart";
+	current-speed = <115200>;
+	status = "ok";
+	tx-pin = <33>;
+	rx-pin = <34>;
+	rts-pin = <5>;
+	cts-pin = <7>;
+};

tests/drivers/uart/uart_async_api/prj.conf

@@ -0,0 +1,3 @@
+CONFIG_SERIAL=y
+CONFIG_UART_ASYNC_API=y
+CONFIG_ZTEST=y

tests/drivers/uart/uart_async_api/src/main.c

@@ -0,0 +1,26 @@
+/*
+ * Copyright (c) 2019 Nordic Semiconductor ASA
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+/**
+ * @addtogroup t_driver_uart
+ * @{
+ * @defgroup t_uart_async test_uart_async
+ * @}
+ */
+
+#include "test_uart.h"
+
+void test_main(void)
+{
+	ztest_test_suite(uart_async_test,
+			 ztest_unit_test(test_single_read),
+			 ztest_unit_test(test_chained_read),
+			 ztest_unit_test(test_double_buffer),
+			 ztest_unit_test(test_read_abort),
+			 ztest_unit_test(test_write_abort));
+
+	ztest_run_test_suite(uart_async_test);
+}

tests/drivers/uart/uart_async_api/src/test_uart.h

@@ -0,0 +1,34 @@
+/*
+ * Copyright (c) 2019 Nordic Semiconductor ASA
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+/**
+ * @file
+ * @brief UART cases header file
+ *
+ * Header file for UART cases
+ */
+
+#ifndef __TEST_UART_H__
+#define __TEST_UART_H__
+
+#include <uart.h>
+#include <ztest.h>
+
+/* RX and TX pins have to be connected together*/
+
+#if defined(CONFIG_BOARD_NRF52840_PCA10056)
+#define UART_DEVICE_NAME DT_UART_0_NAME
+#else
+#define UART_DEVICE_NAME CONFIG_UART_CONSOLE_ON_DEV_NAME
+#endif
+
+void test_single_read(void);
+void test_chained_read(void);
+void test_double_buffer(void);
+void test_read_abort(void);
+void test_write_abort(void);
+
+#endif /* __TEST_UART_H__ */