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authorSteffen Görtz <contrib@steffen-goertz.de>2019-01-07 15:23:47 +0000
committerPeter Maydell <peter.maydell@linaro.org>2019-01-07 15:23:47 +0000
commit7ec543e4b9d3113f0f7afa49a474d7098abe29f0 (patch)
treea79f86afe3e3687812ff814fdfd08ad951bdcc07
parent60facd906bb98e3e5e6788341c97b198e87e7762 (diff)
downloadqemu-arm-7ec543e4b9d3113f0f7afa49a474d7098abe29f0.tar.gz
tests/microbit-test: Add Tests for nRF51 Timer
Basic tests for nRF51 Timer Peripheral. Signed-off-by: Steffen Görtz <contrib@steffen-goertz.de> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Message-id: 20190103091119.9367-11-stefanha@redhat.com Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
-rw-r--r--tests/microbit-test.c95
1 files changed, 95 insertions, 0 deletions
diff --git a/tests/microbit-test.c b/tests/microbit-test.c
index f0a180cbc6..0c125535f6 100644
--- a/tests/microbit-test.c
+++ b/tests/microbit-test.c
@@ -20,6 +20,7 @@
#include "hw/arm/nrf51.h"
#include "hw/gpio/nrf51_gpio.h"
+#include "hw/timer/nrf51_timer.h"
static void test_nrf51_gpio(void)
{
@@ -143,6 +144,99 @@ static void test_nrf51_gpio(void)
qtest_set_irq_in(global_qtest, "/machine/nrf51", "unnamed-gpio-in", 0, 0);
}
+static void timer_task(hwaddr task)
+{
+ writel(NRF51_TIMER_BASE + task, NRF51_TRIGGER_TASK);
+}
+
+static void timer_clear_event(hwaddr event)
+{
+ writel(NRF51_TIMER_BASE + event, NRF51_EVENT_CLEAR);
+}
+
+static void timer_set_bitmode(uint8_t mode)
+{
+ writel(NRF51_TIMER_BASE + NRF51_TIMER_REG_BITMODE, mode);
+}
+
+static void timer_set_prescaler(uint8_t prescaler)
+{
+ writel(NRF51_TIMER_BASE + NRF51_TIMER_REG_PRESCALER, prescaler);
+}
+
+static void timer_set_cc(size_t idx, uint32_t value)
+{
+ writel(NRF51_TIMER_BASE + NRF51_TIMER_REG_CC0 + idx * 4, value);
+}
+
+static void timer_assert_events(uint32_t ev0, uint32_t ev1, uint32_t ev2,
+ uint32_t ev3)
+{
+ g_assert(readl(NRF51_TIMER_BASE + NRF51_TIMER_EVENT_COMPARE_0) == ev0);
+ g_assert(readl(NRF51_TIMER_BASE + NRF51_TIMER_EVENT_COMPARE_1) == ev1);
+ g_assert(readl(NRF51_TIMER_BASE + NRF51_TIMER_EVENT_COMPARE_2) == ev2);
+ g_assert(readl(NRF51_TIMER_BASE + NRF51_TIMER_EVENT_COMPARE_3) == ev3);
+}
+
+static void test_nrf51_timer(void)
+{
+ uint32_t steps_to_overflow = 408;
+
+ /* Compare Match */
+ timer_task(NRF51_TIMER_TASK_STOP);
+ timer_task(NRF51_TIMER_TASK_CLEAR);
+
+ timer_clear_event(NRF51_TIMER_EVENT_COMPARE_0);
+ timer_clear_event(NRF51_TIMER_EVENT_COMPARE_1);
+ timer_clear_event(NRF51_TIMER_EVENT_COMPARE_2);
+ timer_clear_event(NRF51_TIMER_EVENT_COMPARE_3);
+
+ timer_set_bitmode(NRF51_TIMER_WIDTH_16); /* 16 MHz Timer */
+ timer_set_prescaler(0);
+ /* Swept over in first step */
+ timer_set_cc(0, 2);
+ /* Barely miss on first step */
+ timer_set_cc(1, 162);
+ /* Spot on on third step */
+ timer_set_cc(2, 480);
+
+ timer_assert_events(0, 0, 0, 0);
+
+ timer_task(NRF51_TIMER_TASK_START);
+ clock_step(10000);
+ timer_assert_events(1, 0, 0, 0);
+
+ /* Swept over on first overflow */
+ timer_set_cc(3, 114);
+
+ clock_step(10000);
+ timer_assert_events(1, 1, 0, 0);
+
+ clock_step(10000);
+ timer_assert_events(1, 1, 1, 0);
+
+ /* Wrap time until internal counter overflows */
+ while (steps_to_overflow--) {
+ timer_assert_events(1, 1, 1, 0);
+ clock_step(10000);
+ }
+
+ timer_assert_events(1, 1, 1, 1);
+
+ timer_clear_event(NRF51_TIMER_EVENT_COMPARE_0);
+ timer_clear_event(NRF51_TIMER_EVENT_COMPARE_1);
+ timer_clear_event(NRF51_TIMER_EVENT_COMPARE_2);
+ timer_clear_event(NRF51_TIMER_EVENT_COMPARE_3);
+ timer_assert_events(0, 0, 0, 0);
+
+ timer_task(NRF51_TIMER_TASK_STOP);
+
+ /* Test Proposal: Stop/Shutdown */
+ /* Test Proposal: Shortcut Compare -> Clear */
+ /* Test Proposal: Shortcut Compare -> Stop */
+ /* Test Proposal: Counter Mode */
+}
+
int main(int argc, char **argv)
{
int ret;
@@ -152,6 +246,7 @@ int main(int argc, char **argv)
global_qtest = qtest_initf("-machine microbit");
qtest_add_func("/microbit/nrf51/gpio", test_nrf51_gpio);
+ qtest_add_func("/microbit/nrf51/timer", test_nrf51_timer);
ret = g_test_run();