// ucoolib - Microcontroller object oriented library. {{{ // // Copyright (C) 2015 Nicolas Schodet // // 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 "ucoo/hal/self_programming/self_programming.hh" #include "ucoo/arch/reg.hh" namespace ucoo { int self_programming_flash_size () { return reg::DESIG->FLASH_SIZE * 1024; } int self_programming_erase_size (uint32_t addr) { assert (static_cast (addr - FLASH_BASE) <= self_programming_flash_size ()); uint32_t idcode = reg::DBGMCU->IDCODE & DBGMCU_IDCODE_DEV_ID_Msk; int page_size = idcode >= 0x414 ? 2048 : 1024; assert ((addr & (page_size - 1)) == 0); return page_size; } void self_programming_erase (uint32_t addr, int count) { assert (static_cast (addr - FLASH_BASE + count) <= self_programming_flash_size ()); int page_size = self_programming_erase_size (addr); assert ((count & (page_size - 1)) == 0); reg::FLASH->CR = FLASH_CR_LOCK; reg::FLASH->KEYR = FLASH_KEYR_KEY1; reg::FLASH->KEYR = FLASH_KEYR_KEY2; while (reg::FLASH->SR & FLASH_SR_BSY) ; while (count) { reg::FLASH->CR = FLASH_CR_PER; reg::FLASH->AR = addr; reg::FLASH->CR |= FLASH_CR_STRT; while (reg::FLASH->SR & FLASH_SR_BSY) ; reg::FLASH->CR = 0; addr += page_size; count -= page_size; } reg::FLASH->CR = FLASH_CR_LOCK; assert (count == 0); } void self_programming_write (uint32_t addr, const char *buf, int count) { assert (addr % 2 == 0); assert (reinterpret_cast (buf) % 2 == 0); assert (count % 2 == 0); assert (static_cast (addr - FLASH_BASE + count) <= self_programming_flash_size ()); reg::FLASH->CR = FLASH_CR_LOCK; reg::FLASH->KEYR = FLASH_KEYR_KEY1; reg::FLASH->KEYR = FLASH_KEYR_KEY2; while (reg::FLASH->SR & FLASH_SR_BSY) ; for (int i = 0; i < count; i += 2) { reg::FLASH->CR = FLASH_CR_PG; *reinterpret_cast (addr + i) = *reinterpret_cast (buf + i); while (reg::FLASH->SR & FLASH_SR_BSY) ; reg::FLASH->CR = 0; } reg::FLASH->CR = FLASH_CR_LOCK; } } // namespace ucoo