From d7aaaa35bd56fad2621ff9830e3304dfcee7db68 Mon Sep 17 00:00:00 2001
From: Andrew Tridgell <andrew@tridgell.net>
Date: Sat, 6 Oct 2018 10:34:21 +1000
Subject: [PATCH] HAL_ChibiOS: disable RCIN and timer threads for iomcu

---
 libraries/AP_HAL_ChibiOS/hwdef/iomcu/hwdef.dat | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/libraries/AP_HAL_ChibiOS/hwdef/iomcu/hwdef.dat b/libraries/AP_HAL_ChibiOS/hwdef/iomcu/hwdef.dat
index 15f0cc066d..5652b31797 100644
--- a/libraries/AP_HAL_ChibiOS/hwdef/iomcu/hwdef.dat
+++ b/libraries/AP_HAL_ChibiOS/hwdef/iomcu/hwdef.dat
@@ -81,6 +81,10 @@ define SERIAL_BUFFERS_SIZE 0
 define HAL_USE_EMPTY_IO TRUE
 define PORT_INT_REQUIRED_STACK 64
 
+# avoid timer and RCIN threads to save memory
+define HAL_NO_TIMER_THREAD
+define HAL_NO_RCIN_THREAD
+
 #defined to turn off undef warnings
 define __FPU_PRESENT 0