tests: dac: esp32: API test for CI

Add base DAC test used during CI.

Signed-off-by: Marek Matej <[email protected]>

Author: Marek Matej

tests/drivers/dac/dac_api/boards/esp32.overlay

@@ -0,0 +1,9 @@
+/*
+ * Copyright 2022 Espressif (Shanghai)
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+&dac {
+	status = "okay";
+};

tests/drivers/dac/dac_api/boards/esp32s2_saola.overlay

@@ -0,0 +1,9 @@
+/*
+ * Copyright 2022 Espressif (Shanghai)
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+&dac {
+	status = "okay";
+};

tests/drivers/dac/dac_api/src/test_dac.c

@@ -60,6 +60,13 @@
 #define DAC_RESOLUTION		12
 #define DAC_CHANNEL_ID		0
 
+#elif defined(CONFIG_BOARD_ESP32) || \
+	defined(CONFIG_BOARD_ESP32S2_SAOLA)
+
+#define DAC_DEVICE_NODE		DT_NODELABEL(dac)
+#define DAC_RESOLUTION		12
+#define DAC_CHANNEL_ID		0
+
 #else
 #error "Unsupported board."
 #endif

tests/drivers/dac/dac_api/testcase.yaml

@@ -9,4 +9,5 @@ tests:
       nucleo_f767zi nucleo_g071rb nucleo_g474re nucleo_h743zi nucleo_l073rz
       nucleo_l152re disco_l475_iot1 nucleo_l552ze_q stm32l562e_dk
       b_u585i_iot02a nucleo_wl55jc
+      esp32 esp32s2_saola
     depends_on: dac