tests: benchmarks: power_consumption: i2c: Improve thread suspend

Test thread cannot be suspended at any time because driver power management happens in the thread context so if thread is suspended at the random moment and system goes to s2ram it can lead to increased power consumption because thread got suspended before i2c device got properly suspended. Signed-off-by: Krzysztof Chruściński <[email protected]>
nrfconnect · Jan 13, 2025 · 0c39c89 · 0c39c89
1 parent e43d0a9
commit 0c39c89
Showing 1 changed file with 11 additions and 0 deletions.
diff --git a/tests/benchmarks/power_consumption/i2c/src/driver_test.c b/tests/benchmarks/power_consumption/i2c/src/driver_test.c
@@ -9,6 +9,13 @@
 
 static const struct device *i2c = DEVICE_DT_GET(DT_ALIAS(sensor_bme688));
 
+static bool suspend_req;
+
+bool self_suspend_req(void)
+{
+	suspend_req = true;
+	return true;
+}
 
 void thread_definition(void)
 {
@@ -17,6 +24,10 @@ void thread_definition(void)
 
 	while (1) {
 		ret = i2c_reg_read_byte(i2c, 0x76, 0x75, &value);
+		if (suspend_req) {
+			suspend_req = false;
+			k_thread_suspend(k_current_get());
+		}
 		if (ret < 0) {
 			printk("Failure in reading byte %d", ret);
 			return;