1 files changed, 109 insertions, 0 deletions
diff --git a/src/modules/systemlib/mcu_version.c b/src/modules/systemlib/mcu_version.c
new file mode 100644
index 000000000..4bcf95784
--- /dev/null
+++ b/src/modules/systemlib/mcu_version.c
@@ -0,0 +1,109 @@
+/****************************************************************************
+ *
+ *   Copyright (c) 2014 PX4 Development Team. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name PX4 nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+/**
+ * @file mcu_version.c
+ * 
+ * Read out the microcontroller version from the board
+ *
+ * @author Lorenz Meier <lorenz@px4.io>
+ *
+ */
+
+#include "mcu_version.h"
+
+#include <nuttx/config.h>
+
+#ifdef CONFIG_ARCH_CHIP_STM32
+#include <up_arch.h>
+
+#define DBGMCU_IDCODE	0xE0042000
+
+#define STM32F40x_41x	0x413
+#define STM32F42x_43x	0x419
+
+#define REVID_MASK	0xFFFF0000
+#define DEVID_MASK	0xFFF
+
+#endif
+
+
+
+int mcu_version(char* rev, char** revstr)
+{
+#ifdef CONFIG_ARCH_CHIP_STM32
+	uint32_t abc = getreg32(DBGMCU_IDCODE);
+
+	int32_t chip_version = abc & DEVID_MASK;
+	enum MCU_REV revid = (abc & REVID_MASK) >> 16;
+
+	switch (chip_version) {
+	case STM32F40x_41x:
+		*revstr = "STM32F40x";
+		break;
+	case STM32F42x_43x:
+		*revstr = "STM32F42x";
+		break;
+	default:
+		*revstr = "STM32F???";
+		break;
+	}
+
+	switch (revid) {
+
+		case MCU_REV_STM32F4_REV_A:
+			*rev = 'A';
+			break;
+		case MCU_REV_STM32F4_REV_Z:
+			*rev = 'Z';
+			break;
+		case MCU_REV_STM32F4_REV_Y:
+			*rev = 'Y';
+			break;
+		case MCU_REV_STM32F4_REV_1:
+			*rev = '1';
+			break;
+		case MCU_REV_STM32F4_REV_3:
+			*rev = '3';
+			break;
+		default:
+			*rev = '?';
+			revid = -1;
+			break;
+	}
+
+	return revid;
+#else
+	return -1;
+#endif
+}