From 7732a05cac84a5260fc40f8fa2193e1a1de8de36 Mon Sep 17 00:00:00 2001
From: Giovanni Harting <539@idlegandalf.com>
Date: Fri, 29 Jun 2018 08:04:27 +0200
Subject: [PATCH] added more debug out and channel max logic

---
 main.go | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/main.go b/main.go
index 4fbd643..c6204db 100644
--- a/main.go
+++ b/main.go
@@ -18,7 +18,7 @@ import (
 // CONSTANTS
 
 const VERSION = "0.1"
-const RESOLUTION = 4096
+const RESOLUTION = 4095
 const CHANNEL = 16
 
 // STRUCTS
@@ -88,7 +88,13 @@ func (daemon *LedDaemon) receive() {
 					daemon.name = msg.MLedd.Name
 					log.Infof("Connection with %s etablished; backend registered", msg.MLedd.Name)
 				case *ledd.BackendWrapperMessage_MSetChannel:
+					log.Debug(msg.MSetChannel.NewChannelValues)
 					for c, v := range msg.MSetChannel.NewChannelValues {
+						if c > CHANNEL {
+							log.Warningf("[%s] Channel index %d is higher then this device's max channel index %d. Skipping.", daemon.name, c, CHANNEL)
+							continue
+						}
+
 						if pwm, ok := pwmMap[c]; ok {
 							pwm.setPercentage(float32(v) / RESOLUTION * 100)
 						} else {
@@ -141,7 +147,7 @@ func main() {
 	pca9685 = createPCA9685(i2cDevice, config.Name, config.Pca9685.MinPulse, config.Pca9685.MaxPulse, logging.MustGetLogger("PCA9685"))
 	pca9685.Init()
 
-	pwmMap = make(map[int32]*Pwm, 1)
+	pwmMap = make(map[int32]*Pwm, 0)
 
 	conn, err := net.Dial("tcp4", fmt.Sprintf("%s:%d", config.Ledd.Host, config.Ledd.Port))
 	check(err)