130 lines
1.9 KiB
C
130 lines
1.9 KiB
C
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#include "cpuid.h"
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#include "crc32.h"
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#define CPUID_BEG UID_BASE
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#define ID_SEQUE (4671014970607679160ull) // 0x40D2C75E1F9A36B8
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#define STM32_CPUID_LEN 12 // stm32 cpuid <20><><EFBFBD><EFBFBD>
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// <20>õ<EFBFBD> CPU ID<49><44><EFBFBD><EFBFBD>16<31>ֽ<EFBFBD>
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u32 g_cpuIDBeg = CPUID_BEG;
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void InitCpuIDBase(u32 base)
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{
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g_cpuIDBeg = base;
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}
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void GetCpuID(CpuId * pId)
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{
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int i;
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u8 * pBuf;
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u8 dat;
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u32 addr = (g_cpuIDBeg) / 7;
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if (pId != NULL)
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{
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addr *= 7;
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addr += (g_cpuIDBeg) % 7;
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pBuf = (u8*)(addr);
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for (i = 0; i < STM32_CPUID_LEN; i++)
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{
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dat = *pBuf;
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pId->buff[i] = dat;
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pBuf++;
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}
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// <20><><EFBFBD><EFBFBD>У<EFBFBD><D0A3><EFBFBD><EFBFBD>Ϊid<69>ӳ<EFBFBD><D3B3><EFBFBD>
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pId->dword.dword4 = CalcCrc32(pId->buff, STM32_CPUID_LEN);
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#if (0) // <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϣ
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printf("\r\nread cpuid: ");
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for (i = 0; i < CPUID_LEN; i++)
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{
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printf("%02x ", pId->buff[i]);
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}
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printf("\r\n");
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#endif
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#if (1) // <20><>Ϣ<EFBFBD><CFA2><EFBFBD><EFBFBD>
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{
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#define XMOVE_NUM 1 // <20><>λ<EFBFBD><CEBB><EFBFBD><EFBFBD><EFBFBD><EFBFBD>1--7<><37><EFBFBD><EFBFBD><EFBFBD>ı<EFBFBD><C4B1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϣ<EFBFBD><CFA2><EFBFBD><EFBFBD><EFBFBD>仯
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// ȡ<><C8A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>λ
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uint64_t seque = ID_SEQUE; // <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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u8 idx, temp, first;
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CpuId tmpbuf;
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memcpy(tmpbuf.buff, pId->buff, CPUID_LEN);
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// ȡ<><C8A1> <20><><EFBFBD><EFBFBD>
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for (i = 0; i < CPUID_LEN; i++)
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{
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dat = tmpbuf.buff[i];
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idx = (seque & 0x0F);
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seque >>= 4;
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pId->buff[idx] = ~dat;
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}
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// <20><>λ
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for (idx = 0; idx < XMOVE_NUM; idx++)
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{
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first = pId->buff[0];
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for (i = 1; i <= CPUID_LEN; i++)
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{
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dat = pId->buff[i-1];
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dat >>= 1;
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if (i == CPUID_LEN)
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{
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temp = first;
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}
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else
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{
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temp = pId->buff[i];
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}
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temp <<= 7;
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dat |= temp;
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pId->buff[i-1] = dat;
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}
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}
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}
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#endif
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}
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}
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//----------------------------------
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static int g_cricount = 0;
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void EnterCritical(void)
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{
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if (g_cricount == 0)
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{
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__disable_irq();
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}
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g_cricount++;
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}
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void ExitCritical(void)
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{
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if (g_cricount != 0)
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{
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g_cricount--;
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}
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if (g_cricount == 0)
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{
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__enable_irq();
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}
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}
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// STM32<33><32><EFBFBD><EFBFBD><EFBFBD><EFBFBD>λ
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void RestartMcu(void)
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{
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printf("restart the mcu...\r\n");
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__disable_irq();
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NVIC_SystemReset(); // ϵͳ<CFB5><CDB3>λ
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}
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