From e4174e287a796adf56e28fe404e099adb129bb56 Mon Sep 17 00:00:00 2001
From: Cristian Maglie <c.maglie@arduino.cc>
Date: Thu, 4 Feb 2021 23:27:56 +0100
Subject: [PATCH] Better error message for boards without bootloader

---
 commands/upload/upload.go | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/commands/upload/upload.go b/commands/upload/upload.go
index 8da6876c287..87ad1dc8d66 100644
--- a/commands/upload/upload.go
+++ b/commands/upload/upload.go
@@ -228,6 +228,10 @@ func runProgramAction(pm *packagemanager.PackageManager,
 		}
 	}
 
+	if !uploadProperties.ContainsKey("upload.protocol") && programmer == nil {
+		return fmt.Errorf("a programmer is required to upload for this board")
+	}
+
 	// Set properties for verbose upload
 	if verbose {
 		if v, ok := uploadProperties.GetOk("upload.params.verbose"); ok {