diff --git a/libraries/AP_BoardConfig/AP_BoardConfig.cpp b/libraries/AP_BoardConfig/AP_BoardConfig.cpp
new file mode 100644
index 0000000000..d0812e87ed
--- /dev/null
+++ b/libraries/AP_BoardConfig/AP_BoardConfig.cpp
@@ -0,0 +1,76 @@
+/// -*- tab-width: 4; Mode: C++; c-basic-offset: 4; indent-tabs-mode: nil -*-
+/*
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see .
+ */
+/*
+ * AP_BoardConfig - board specific configuration
+ */
+
+
+#include
+#include
+#include
+
+#if CONFIG_HAL_BOARD == HAL_BOARD_PX4
+#include
+#include
+#include
+#include
+#include
+
+#ifdef CONFIG_ARCH_BOARD_PX4FMU_V1
+#define BOARD_PWM_COUNT_DEFAULT 2
+#else
+#define BOARD_PWM_COUNT_DEFAULT 4
+#endif
+#endif
+
+extern const AP_HAL::HAL& hal;
+
+// table of user settable parameters
+const AP_Param::GroupInfo AP_BoardConfig::var_info[] PROGMEM = {
+#if CONFIG_HAL_BOARD == HAL_BOARD_PX4
+ // @Param: PWM_COUNT
+ // @DisplayName: PWM Count
+ // @Description: Number of auxillary PWMs to enable. On PX4v1 only 0 or 2 is valid. On Pixhawk 0, 2, 4 or 6 is valid.
+ // @Values: 0:No PWMs,2:Two PWMs,4:Four PWMs,6:Six PWMs
+ AP_GROUPINFO("PWM_COUNT", 0, AP_BoardConfig, _pwm_count, BOARD_PWM_COUNT_DEFAULT),
+#endif
+
+ AP_GROUPEND
+};
+
+
+void AP_BoardConfig::init()
+{
+#if CONFIG_HAL_BOARD == HAL_BOARD_PX4
+ /* configurre the FMU driver for the right number of PWMs */
+
+ // ensure only valid values are set, rounding up
+ if (_pwm_count > 6) _pwm_count.set(6);
+ if (_pwm_count < 0) _pwm_count.set(0);
+ if (_pwm_count == 1) _pwm_count.set(2);
+ if (_pwm_count == 3) _pwm_count.set(4);
+ if (_pwm_count == 5) _pwm_count.set(6);
+
+ int fd = open("/dev/px4fmu", 0);
+ if (fd == -1) {
+ hal.scheduler->panic("Unable to open /dev/px4fmu");
+ }
+ if (ioctl(fd, PWM_SERVO_SET_COUNT, _pwm_count.get()) != 0) {
+ hal.console->printf("RCOutput: Unable to setup alt PWM to %u channels\n", _pwm_count.get());
+ }
+ close(fd);
+#endif
+}
diff --git a/libraries/AP_BoardConfig/AP_BoardConfig.h b/libraries/AP_BoardConfig/AP_BoardConfig.h
new file mode 100644
index 0000000000..f900a7a716
--- /dev/null
+++ b/libraries/AP_BoardConfig/AP_BoardConfig.h
@@ -0,0 +1,29 @@
+/// -*- tab-width: 4; Mode: C++; c-basic-offset: 4; indent-tabs-mode: nil -*-
+
+#ifndef __AP_BOARDCONFIG_H__
+#define __AP_BOARDCONFIG_H__
+
+#include
+#include
+#include
+
+class AP_BoardConfig
+{
+public:
+ // constructor
+ AP_BoardConfig(void)
+ {
+ AP_Param::setup_object_defaults(this, var_info);
+ };
+
+ void init(void);
+
+ static const struct AP_Param::GroupInfo var_info[];
+
+private:
+ AP_Int8 _pwm_count;
+};
+
+#endif // __AP_BOARDCONFIG_H__
+
+