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/*
* Copyright (c) 2022 OpenLuat & AirM2M
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of
* this software and associated documentation files (the "Software"), to deal in
* the Software without restriction, including without limitation the rights to
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
* the Software, and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include "bl_inc.h"
#define OTP_KEY1 (0xABCD00A5)
#define OTP_KEY2 (0x1234005A)
#define OTP_START_ADDRESS (0x40008000)
void OTP_Write(uint32_t Address, const uint32_t *Data, uint32_t Len)
{
uint32_t i;
SYSCTRL->CG_CTRL2 |= SYSCTRL_AHBPeriph_OTP;
OTP->RO = 0;
OTP->CFG = 0;
for(i = 0; i < Len; i++)
{
OTP->PDATA = Data[i];
OTP->ADDR = Address + (i * 4);
OTP->PROT = OTP_KEY1;
OTP->PROT = OTP_KEY2;
OTP->CS |= 1;
while((OTP->CS & 0x00000001)){;}
OTP->CS &= ~(0x07 << 1);
}
SYSCTRL->CG_CTRL2 &= ~SYSCTRL_AHBPeriph_OTP;
}
void OTP_Read(uint32_t Address, uint8_t *Data, uint32_t Len)
{
SYSCTRL->CG_CTRL2 |= SYSCTRL_AHBPeriph_OTP;
OTP->CFG = 0x02;
while(!(OTP->CS & 0x80000000)){;}
memcpy(Data, Address + OTP_START_ADDRESS, Len);
SYSCTRL->CG_CTRL2 &= ~SYSCTRL_AHBPeriph_OTP;
}
void OTP_Lock(void)
{
SYSCTRL->CG_CTRL2 |= SYSCTRL_AHBPeriph_OTP;
OTP->CFG = 0x02;
OTP->RO = 0xffffffff;
OTP->ROL = 0xffffffff;
OTP->CFG = 0x01;
SYSCTRL->CG_CTRL2 &= ~SYSCTRL_AHBPeriph_OTP;
}
void OTP_GetSn(uint8_t *ChipSN)
{
memcpy(ChipSN, (uint32_t *)(SYSCTRL_CHIP_SN_ADDR), SYSCTRL_CHIP_SN_LEN);
}
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