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/****************************************************************************
*
* 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 //STM DocID018909 Rev 8 Sect 38.18 (MCU device ID code)
#define UNIQUE_ID 0x1FFF7A10 //STM DocID018909 Rev 8 Sect 39.1 (Unique device ID Register)
#define STM32F40x_41x 0x413
#define STM32F42x_43x 0x419
#define REVID_MASK 0xFFFF0000
#define DEVID_MASK 0xFFF
#endif
/** Copy the 96bit MCU Unique ID into the provided pointer */
void mcu_unique_id(uint32_t *uid_96_bit)
{
#ifdef CONFIG_ARCH_CHIP_STM32
uid_96_bit[0] = getreg32(UNIQUE_ID);
uid_96_bit[1] = getreg32(UNIQUE_ID+4);
uid_96_bit[2] = getreg32(UNIQUE_ID+8);
#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
}
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