From d473b9e1dc8c81dcdcf12612e8cb0686403ceeb8 Mon Sep 17 00:00:00 2001
From: Olivier Fauchon <ofauchon2204@gmail.com>
Date: Sun, 29 Jan 2023 20:11:47 +0100
Subject: [PATCH] lorawan/basic-demo: add debug logs at compile time with
 ldflags

---
 examples/lora/lorawan/basic-demo/README.md | 9 +++++++++
 examples/lora/lorawan/basic-demo/main.go   | 7 ++++---
 2 files changed, 13 insertions(+), 3 deletions(-)

diff --git a/examples/lora/lorawan/basic-demo/README.md b/examples/lora/lorawan/basic-demo/README.md
index 0191d66..866f9c8 100644
--- a/examples/lora/lorawan/basic-demo/README.md
+++ b/examples/lora/lorawan/basic-demo/README.md
@@ -33,3 +33,12 @@ tinygo flash -target pybadge -tags featherwing ./examples/lora/lorawan/basic-dem
 tinygo flash -target lorae5 ./examples/lora/lorawan/basic-demo
 ```
 
+
+## Enable debugging
+
+You can also enable some debug logs with ldflags :
+
+```
+$ tinygo build -ldflags="-X 'main.debug=true'" -target=lorae5
+```
+
diff --git a/examples/lora/lorawan/basic-demo/main.go b/examples/lora/lorawan/basic-demo/main.go
index eed41fa..928799a 100644
--- a/examples/lora/lorawan/basic-demo/main.go
+++ b/examples/lora/lorawan/basic-demo/main.go
@@ -12,8 +12,9 @@ import (
 	"tinygo.org/x/drivers/lora/lorawan/region"
 )
 
+var debug string
+
 const (
-	debug                       = true
 	LORAWAN_JOIN_TIMEOUT_SEC    = 180
 	LORAWAN_RECONNECT_DELAY_SEC = 15
 	LORAWAN_UPLINK_DELAY_SEC    = 60
@@ -88,7 +89,7 @@ func main() {
 	// Configure AppEUI, DevEUI, APPKey
 	setLorawanKeys()
 
-	if debug {
+	if debug != "" {
 		println("main: Network joined")
 		println("main: DevEui, " + otaa.GetDevEUI())
 		println("main: AppEui, " + otaa.GetAppEUI())
@@ -100,7 +101,7 @@ func main() {
 		failMessage(err)
 	}
 
-	if debug {
+	if debug != "" {
 		println("main: NetID, " + otaa.GetNetID())
 		println("main: NwkSKey, " + session.GetNwkSKey())
 		println("main: AppSKey, " + session.GetAppSKey())