mirror of https://github.com/ARMmbed/mbed-os.git
152 lines
4.6 KiB
C
152 lines
4.6 KiB
C
/* mbed Microcontroller Library
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*******************************************************************************
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* Copyright (c) 2017, STMicroelectronics
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* 3. Neither the name of STMicroelectronics nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*******************************************************************************
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*/
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#include "device.h"
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#if DEVICE_CPUUID
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#include <string.h>
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#if defined(TARGET_STM32F0)
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#include "stm32f0xx_ll_utils.h"
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#elif defined(TARGET_STM32F1)
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#include "stm32f1xx_ll_utils.h"
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#elif defined(TARGET_STM32F2)
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#include "stm32f2xx_ll_utils.h"
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#elif defined(TARGET_STM32F3)
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#include "stm32f3xx_ll_utils.h"
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#elif defined(TARGET_STM32F4)
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#include "stm32f4xx_ll_utils.h"
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#elif defined(TARGET_STM32F7)
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#include "stm32f7xx_ll_utils.h"
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#elif defined(TARGET_STM32L0)
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#include "stm32l0xx_ll_utils.h"
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#elif defined(TARGET_STM32L1)
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#include "stm32l1xx_ll_utils.h"
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#elif defined(TARGET_STM32L4)
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#include "stm32l4xx_ll_utils.h"
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#else
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#error "Unsupported STM32 device!"
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#endif
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#include "cpu_uid_api.h"
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#define UID_WORDS 3
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#ifdef MBED_CPU_UID_STR_SIZE_MAX
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static int cpu_uid_itoa(int value, char *sp, int radix);
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#endif
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void cpu_uid_get_uid(uint8_t *uid)
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{
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uint32_t uid_buf[UID_WORDS];
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int pos = 0;
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uid_buf[0] = LL_GetUID_Word0();
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uid_buf[1] = LL_GetUID_Word1();
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uid_buf[2] = LL_GetUID_Word2();
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for (int i = (UID_WORDS-1); i >= 0; --i) {
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for (int j = 3; j >= 0; --j) {
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uid[pos++] = (uint8_t)((uid_buf[i] >> (j*8)) & 0xFF);
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}
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}
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}
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#ifdef MBED_CPU_UID_STR_SIZE_MAX
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void cpu_uid_get_str(char *str)
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{
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char buffer[16];
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char lot_number[8];
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uint8_t wafer_number;
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uint16_t x, y;
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uint32_t uid_buf[UID_WORDS];
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uid_buf[0] = LL_GetUID_Word0();
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uid_buf[1] = LL_GetUID_Word1();
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uid_buf[2] = LL_GetUID_Word2();
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lot_number[0] = (uid_buf[2] >> 24) & 0x000000FF;
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lot_number[1] = (uid_buf[2] >> 16) & 0x000000FF;
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lot_number[2] = (uid_buf[2] >> 8) & 0x000000FF;
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lot_number[3] = uid_buf[2] & 0x000000FF;
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lot_number[4] = (uid_buf[1] >> 24) & 0x000000FF;
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lot_number[5] = (uid_buf[1] >> 16) & 0x000000FF;
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lot_number[6] = (uid_buf[1] >> 8) & 0x000000FF;
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lot_number[7] = '\0';
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wafer_number = uid_buf[1] & 0x000000FF;
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x = (uid_buf[0] >> 16) & 0x0000FFFF;
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y = uid_buf[0] & 0x0000FFFF;
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// make a string in format "Lot xxxxxxx Wafer xxx X=xxxxx Y=xxxxx" - max 38 chars including terminating zero
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strcpy(str, "Lot ");
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strcat(str, lot_number);
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strcat(str, " Wafer ");
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cpu_uid_itoa(wafer_number, buffer, 10);
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strcat(str, buffer);
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strcat(str, " X=");
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cpu_uid_itoa(x, buffer, 10);
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strcat(str, buffer);
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strcat(str, " Y=");
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cpu_uid_itoa(y, buffer, 10);
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strcat(str, buffer);
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}
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int cpu_uid_itoa(int value, char *sp, int radix)
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{
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char tmp[16];// be careful with the length of the buffer
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char *tp = tmp;
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int i;
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unsigned v = value;
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while (v || tp == tmp) {
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i = v % radix;
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v /= radix; // v/=radix uses less CPU clocks than v=v/radix does
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if (i < 10) {
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*tp++ = i+'0';
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}
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else {
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*tp++ = i + 'a' - 10;
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}
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}
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int len = tp - tmp;
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while (tp > tmp) {
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*sp++ = *--tp;
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}
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*sp = '\0';
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return len;
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}
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#endif
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#endif
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