mirror of
https://github.com/google/pebble.git
synced 2025-07-05 06:10:27 -04:00
39 lines
1.2 KiB
C
39 lines
1.2 KiB
C
/*
|
|
* Copyright 2024 Google LLC
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
#include "drivers/otp.h"
|
|
|
|
#include "stm32f2xx_flash.h"
|
|
|
|
#include <stdint.h>
|
|
#include <stdbool.h>
|
|
|
|
// See page 53 of STM Reference Manual RM0033:
|
|
#define OTP_SLOTS_BASE_ADDR (0x1FFF7800)
|
|
#define OTP_LOCKS_BASE_ADDR (0x1FFF7A00)
|
|
|
|
//! Each OTP slot is 32 bytes. There are 16 slots: [0-15]
|
|
char * otp_get_slot(const uint8_t index) {
|
|
return (char * const) (OTP_SLOTS_BASE_ADDR + (32 * index));
|
|
}
|
|
|
|
uint8_t * otp_get_lock(const uint8_t index) {
|
|
return (uint8_t * const) (OTP_LOCKS_BASE_ADDR + index);
|
|
}
|
|
|
|
bool otp_is_locked(const uint8_t index) {
|
|
return (*otp_get_lock(index) == 0);
|
|
}
|