tests: drivers: counter: add rtc_ds3231_api

Cloned from counter_basic_api with modifications based on DS3231
limitations:
* Only one device tested per board;
* Counter cannot be stopped or started;
* Alarms are serviced by worker thread, so are not invoked from ISR
  and require that test thread yield to allow processing (no
  k_busy_wait());
* Multiple Alarms test is disabled as documented in test.

Additional tests were added for DS3231-specific API.

Signed-off-by: Peter A. Bigot <[email protected]>

CODEOWNERS

@@ -475,6 +475,7 @@
 /tests/crypto/mbedtls/                    @nashif @ceolin
 /tests/drivers/can/                       @alexanderwachter
 /tests/drivers/counter/                   @nordic-krch
+/tests/drivers/counter/maxim_ds3231_api/  @pabigot
 /tests/drivers/flash_simulator/           @nvlsianpu
 /tests/drivers/gpio/                      @mnkp @pabigot
 /tests/drivers/hwinfo/                    @alexanderwachter

tests/drivers/counter/maxim_ds3231_api/CMakeLists.txt

@@ -0,0 +1,9 @@
+# SPDX-License-Identifier: Apache-2.0
+
+cmake_minimum_required(VERSION 3.13.1)
+
+find_package(Zephyr HINTS $ENV{ZEPHYR_BASE})
+project(NONE)
+
+FILE(GLOB app_sources src/*.c)
+target_sources(app PRIVATE ${app_sources})

tests/drivers/counter/maxim_ds3231_api/boards/efr32mg_sltb004a.overlay

@@ -0,0 +1,15 @@
+/*
+ * Copyright (c) 2019 Peter Bigot Consulting, LLC
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+&i2c0 { /* SDA H16=PC10, SCL H15=PC11, ISW H13=PF6 */
+	status = "okay";
+	ds3231: ds3231@68 {
+		compatible = "maxim,ds3231";
+		reg = <0x68>;
+		label = "DS3231";
+		isw-gpios = <&gpiof 6 (GPIO_PULL_UP | GPIO_ACTIVE_LOW)>;
+	};
+};

tests/drivers/counter/maxim_ds3231_api/boards/frdm_k64f.overlay

@@ -0,0 +1,15 @@
+/*
+ * Copyright (c) 2019 Peter Bigot Consulting, LLC
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+&i2c0 { /* SDA PTE25, SCL PTE24, ISW PTE26 */
+	status = "okay";
+	ds3231: ds3231@68 {
+		compatible = "maxim,ds3231";
+		reg = <0x68>;
+		label = "DS3231";
+		isw-gpios = <&gpioe 26 (GPIO_PULL_UP | GPIO_ACTIVE_LOW)>;
+	};
+};

tests/drivers/counter/maxim_ds3231_api/boards/nrf51dk_nrf51422.overlay

@@ -0,0 +1,15 @@
+/*
+ * Copyright (c) 2019 Peter Bigot Consulting, LLC
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+&i2c0 { /* SDA 30, SCL 7 */
+	status = "okay";
+	ds3231: ds3231@68 {
+		compatible = "maxim,ds3231";
+		reg = <0x68>;
+		label = "DS3231";
+		isw-gpios = <&gpio0 0 (GPIO_PULL_UP | GPIO_ACTIVE_LOW)>;
+	};
+};

tests/drivers/counter/maxim_ds3231_api/boards/nrf52840dk_nrf52840.overlay

@@ -0,0 +1,15 @@
+/*
+ * Copyright (c) 2019 Peter Bigot Consulting, LLC
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+&i2c0 { /* SDA P0.26, SCL P0.27 */
+	status = "okay";
+	ds3231: ds3231@68 {
+		compatible = "maxim,ds3231";
+		reg = <0x68>;
+		label = "DS3231";
+		isw-gpios = <&gpio0 0 (GPIO_PULL_UP | GPIO_ACTIVE_LOW)>;
+	};
+};

tests/drivers/counter/maxim_ds3231_api/boards/nucleo_l476rg.overlay

@@ -0,0 +1,15 @@
+/*
+ * Copyright (c) 2019 Peter Bigot Consulting, LLC
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+&i2c1 { /* SDA CN5.9=PB9, SCL CN5.10=PB8, ISW CN5.1=D8=PA9 */
+	status = "okay";
+	ds3231: ds3231@68 {
+		compatible = "maxim,ds3231";
+		reg = <0x68>;
+		label = "DS3231";
+		isw-gpios = <&gpioa 9 (GPIO_PULL_UP | GPIO_ACTIVE_LOW)>;
+	};
+};

tests/drivers/counter/maxim_ds3231_api/boards/particle_xenon.overlay

@@ -0,0 +1,16 @@
+/*
+ * Copyright (c) 2019 Peter Bigot Consulting, LLC
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+&i2c0 { /* SDA P0.26, SCL P0.27, ISW P1.1, 32K P1.2 */
+	status = "okay";
+	ds3231: ds3231@68 {
+		compatible = "maxim,ds3231";
+		reg = <0x68>;
+		label = "DS3231";
+		isw-gpios = <&gpio1 1 (GPIO_PULL_UP | GPIO_ACTIVE_LOW)>;
+		32k-gpios = <&gpio1 2 (GPIO_PULL_UP | GPIO_ACTIVE_LOW)>;
+	};
+};

tests/drivers/counter/maxim_ds3231_api/prj.conf

@@ -0,0 +1,7 @@
+CONFIG_I2C=y
+CONFIG_COUNTER=y
+CONFIG_COUNTER_MAXIM_DS3231=y
+CONFIG_BT=n
+CONFIG_ZTEST=y
+CONFIG_TEST_USERSPACE=y
+CONFIG_LOG=y