2 * Copyright © 2024 Keith Packard <keithp@keithp.com>
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation, either version 2 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * General Public License for more details.
14 * You should have received a copy of the GNU General Public License along
15 * with this program; if not, write to the Free Software Foundation, Inc.,
16 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
22 extern uint8_t __eeprom_base[2048];
25 ao_eeprom_read(ao_pos_t pos, void *v, uint16_t len)
27 memcpy(v, &__eeprom_base[pos], len);
32 ao_eeprom_write(ao_pos_t pos, void *v, uint16_t len)
34 bool hsi_on = (stm_rcc.cr & (1UL << STM_RCC_CR_HSIRDY)) != 0;
37 stm_rcc.cr |= (1UL << STM_RCC_CR_HSION);
38 while (!(stm_rcc.cr & (1 << STM_RCC_CR_HSIRDY)))
42 ao_flash_bytes(&__eeprom_base[pos], v, len);
45 stm_rcc.cr &= ~(1UL << STM_RCC_CR_HSION);