From ed9f740edde87fb69ed2a214ed6348024088fa2f Mon Sep 17 00:00:00 2001
From: Benjamin Valentin <benjamin.valentin@ml-pa.com>
Date: Sat, 2 Apr 2022 21:01:42 +0200
Subject: [PATCH] examples/lorawan: move enabling of sleep modes to C code

---
 examples/lorawan/Makefile |  4 ----
 examples/lorawan/main.c   | 11 +++++++++++
 2 files changed, 11 insertions(+), 4 deletions(-)

diff --git a/examples/lorawan/Makefile b/examples/lorawan/Makefile
index 10438ba181..08bb04ecd3 100644
--- a/examples/lorawan/Makefile
+++ b/examples/lorawan/Makefile
@@ -53,10 +53,6 @@ else ifeq (abp,$(ACTIVATION_MODE))
   CFLAGS += -DUSE_ABP
 endif
 
-# Enable deep sleep power mode (e.g. STOP mode on STM32) which
-# in general provides RAM retention after wake-up.
-CFLAGS += -DPM_BLOCKER_INITIAL=0x00000001
-
 # Comment this out to disable code in RIOT that does safety checking
 # which is not needed in a production environment but helps in the
 # development process:
diff --git a/examples/lorawan/main.c b/examples/lorawan/main.c
index 34ca9f929f..7bb6d0671c 100644
--- a/examples/lorawan/main.c
+++ b/examples/lorawan/main.c
@@ -27,6 +27,7 @@
 #include "thread.h"
 #include "fmt.h"
 
+#include "periph/pm.h"
 #if IS_USED(MODULE_PERIPH_RTC)
 #include "periph/rtc.h"
 #else
@@ -148,6 +149,16 @@ int main(void)
     puts("LoRaWAN Class A low-power application");
     puts("=====================================");
 
+    /*
+     * Enable deep sleep power mode (e.g. STOP mode on STM32) which
+     * in general provides RAM retention after wake-up.
+     */
+#if IS_USED(MODULE_PM_LAYERED)
+    for (unsigned i = 1; i < PM_NUM_MODES; ++i) {
+        pm_unblock(i);
+    }
+#endif
+
     /* Initialize the radio driver */
 #if IS_USED(MODULE_SX127X)
     sx127x_setup(&sx127x, &sx127x_params[0], 0);