From f15fbf13b36003c1c04e0c36b5c87fb051f1e558 Mon Sep 17 00:00:00 2001
From: Gilles DOFFE <g.doffe@gmail.com>
Date: Fri, 23 Feb 2018 22:22:51 +0100
Subject: [PATCH] tests: add periph_qdec test
* Test all QDEC devices
Signed-off-by: Gilles DOFFE <g.doffe@gmail.com>
---
tests/periph_qdec/Makefile | 8 +++++
tests/periph_qdec/README.md | 7 ++++
tests/periph_qdec/main.c | 64 +++++++++++++++++++++++++++++++++++++
3 files changed, 79 insertions(+)
create mode 100644 tests/periph_qdec/Makefile
create mode 100644 tests/periph_qdec/README.md
create mode 100644 tests/periph_qdec/main.c
diff --git a/tests/periph_qdec/Makefile b/tests/periph_qdec/Makefile
new file mode 100644
index 0000000000..faf60b4f13
--- /dev/null
+++ b/tests/periph_qdec/Makefile
@@ -0,0 +1,8 @@
+BOARD ?= nucleo-f401
+include ../Makefile.tests_common
+
+FEATURES_REQUIRED = periph_qdec
+
+USEMODULE += xtimer
+
+include $(RIOTBASE)/Makefile.include
diff --git a/tests/periph_qdec/README.md b/tests/periph_qdec/README.md
new file mode 100644
index 0000000000..fb739c4e8c
--- /dev/null
+++ b/tests/periph_qdec/README.md
@@ -0,0 +1,7 @@
+Expected result
+===============
+If everything is running as supposed to, you should see a X4 mode quadrature decoding on each qdec configured.
+
+Background
+==========
+Test for the low-level QDEC driver.
diff --git a/tests/periph_qdec/main.c b/tests/periph_qdec/main.c
new file mode 100644
index 0000000000..54b6fd29eb
--- /dev/null
+++ b/tests/periph_qdec/main.c
@@ -0,0 +1,64 @@
+/*
+ * Copyright (C) 2017 Gilles DOFFE <gdoffe@gmail.com>
+ *
+ * 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 tests
+ * @{
+ *
+ * @file
+ * @brief Test for low-level QDEC drivers
+ *
+ * This test initializes all declared QDEC devices.
+ * It displays QDEC counters value each second.
+ *
+ * @author Gilles DOFFE <gdoffe@gmail.com>
+ *
+ * @}
+ */
+
+#include <stdio.h>
+
+#include "periph/qdec.h"
+#include "xtimer.h"
+
+void handler(void *arg)
+{
+ qdec_t qdec = (qdec_t)arg;
+ printf("QDEC %u counter overflow : reset counter\n", qdec);
+ qdec_read_and_reset(QDEC_DEV(qdec));
+}
+
+int main(void)
+{
+ uint32_t i = 0;
+ int32_t value = 0;
+ puts("Welcome into Quadrature Decoder (QDEC) test program.");
+ puts("This program will count pulses on all available QDEC channels");
+ puts("Written for nucleo-f401, you have to plug signals A and B as follow :");
+ puts(" QDEC0 : signal A on PA6 and signal B on PA7");
+ puts(" QDEC1 : signal A on PB6 and signal B on PB7");
+ puts("Quadrature decoding mode is set to X4 : counting on all edges on both signals");
+
+ for (i = 0; i < QDEC_NUMOF; i++) {
+ int32_t error = qdec_init(QDEC_DEV(i), QDEC_X4, handler, (void *)i);
+ if (error) {
+ fprintf(stderr,"Not supported mode !\n");
+ return error;
+ }
+ }
+
+ while (1) {
+ for (i = 0; i < QDEC_NUMOF; i++) {
+ value = qdec_read_and_reset(QDEC_DEV(i));
+ printf("QDEC %lu = %ld\n", (unsigned long int)i, (long int)value);
+ }
+ xtimer_sleep(1);
+ }
+
+ return 0;
+}
--
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