tests/periph_qdec: Add modded qdec-enabled nrf52840dk variant

tests/periph_qdec/Makefile

@@ -5,4 +5,7 @@ FEATURES_REQUIRED = periph_qdec
 
 USEMODULE += xtimer
 
+# include boards that have are modified to add a qdec peripheral
+EXTERNAL_BOARD_DIRS = $(CURDIR)/boards_modded
+
 include $(RIOTBASE)/Makefile.include

tests/periph_qdec/boards_modded/nrf52840dk/Kconfig

@@ -0,0 +1,21 @@
+# Copyright (c) 2020 HAW Hamburg
+#
+# This file is subject to the terms and conditions of the GNU Lesser
+# General Public License v2.1. See the file LICENSE in the top level
+# directory for more details.
+
+config BOARD
+    default "nrf52840dk" if BOARD_NRF52840DK
+
+config BOARD_NRF52840DK
+    bool
+    default y
+    select BOARDS_COMMON_NRF52XXXDK
+    select CPU_MODEL_NRF52840XXAA
+    select HAS_PERIPH_PWM
+    select HAS_PERIPH_QDEC
+    select HAS_PERIPH_USBDEV
+    select HAS_VDD_LC_FILTER_REG0
+    select HAVE_MTD_SPI_NOR
+
+source "$(RIOTBOARD)/common/nrf52xxxdk/Kconfig"

tests/periph_qdec/boards_modded/nrf52840dk/Makefile

@@ -0,0 +1,6 @@
+# This must be a different name than 'board' as it is implemented by 'native'
+MODULE = board_nrf52840dk_qdec
+
+DIRS += $(RIOTBOARD)/nrf52840dk
+
+include $(RIOTBASE)/Makefile.base

tests/periph_qdec/boards_modded/nrf52840dk/Makefile.dep

@@ -0,0 +1,4 @@
+# This must be a different name than 'board' as it is implemented by 'native'
+USEMODULE += board_nrf52840dk_qdec
+
+include $(RIOTBOARD)/nrf52840dk/Makefile.dep

tests/periph_qdec/boards_modded/nrf52840dk/Makefile.features

@@ -0,0 +1,3 @@
+FEATURES_PROVIDED += periph_qdec
+
+include $(RIOTBOARD)/nrf52840dk/Makefile.features

tests/periph_qdec/boards_modded/nrf52840dk/Makefile.include

@@ -0,0 +1 @@
+include $(RIOTBOARD)/nrf52840dk/Makefile.include

tests/periph_qdec/boards_modded/nrf52840dk/include/board.h

@@ -0,0 +1 @@
+../../../../../boards/nrf52840dk/include/board.h

tests/periph_qdec/boards_modded/nrf52840dk/include/periph_conf.h

@@ -0,0 +1,73 @@
+/*
+ * Copyright (C) 2021 Koen Zandberg <koen@bergzand.net>
+ *
+ * This file is subject to the terms and conditions of the GNU Lesser
+ * General Public License v2.1. See the file LICENSE in the top level
+ * directory for more details.
+ */
+
+/**
+ * @ingroup     boards_nrf52840dk_modded
+ * @{
+ *
+ * @file
+ * @brief       Minimal peripheral set for the nRF52840 DK with quadrature
+ *              decoder enabled
+ *
+ * @author      Koen Zandberg <koen@bergzand.net>
+ *
+ */
+
+#ifndef PERIPH_CONF_H
+#define PERIPH_CONF_H
+
+#include "kernel_defines.h"
+#include "periph_conf_common.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @name QDEC configuration
+ */
+static const qdec_conf_t qdec_config[] = {
+    {
+        .a_pin  = GPIO_PIN(0, 11),  /* Button 1 */
+        .b_pin  = GPIO_PIN(0, 12),  /* Button 2 */
+        .led_pin = GPIO_PIN(0, 13), /* And the first LED */
+        .sample_period = QDEC_SAMPLEPER_SAMPLEPER_128us,
+        .debounce_filter = true,
+    },
+};
+#define QDEC_NUMOF          ARRAY_SIZE(qdec_config)
+/** @} **/
+
+/**
+ * @name    UART configuration
+ * @{
+ */
+static const uart_conf_t uart_config[] = {
+    { /* Mapped to USB virtual COM port */
+        .dev        = NRF_UARTE0,
+        .rx_pin     = GPIO_PIN(0,8),
+        .tx_pin     = GPIO_PIN(0,6),
+#ifdef MODULE_PERIPH_UART_HW_FC
+        .rts_pin    = GPIO_UNDEF,
+        .cts_pin    = GPIO_UNDEF,
+#endif
+        .irqn       = UARTE0_UART0_IRQn,
+    },
+};
+
+#define UART_0_ISR          (isr_uart0)
+
+#define UART_NUMOF          ARRAY_SIZE(uart_config)
+/** @} */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* PERIPH_CONF_H */
+/** @} */