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This is the support of the Nordic Semiconductor NRF51 (nrf51822, nrf51422) and NRF52 (nrf52832) platform. Based on arduino-nRF5 (https://github.com/sandeepmistry/arduino-nRF5). The included radio driver is compatible with the NRF24 devices. Using a SoftDevice (BLE)is not supported and must be removed before flashing MySensors with a "mass_erase" operation.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,148 @@ | ||
| /* | ||
| Flash.cpp - Flash library | ||
| Original Copyright (c) 2017 Frank Holtz. All right reserved. | ||
| This library is free software; you can redistribute it and/or | ||
| modify it under the terms of the GNU Lesser General Public | ||
| License as published by the Free Software Foundation; either | ||
| version 2.1 of the License, or (at your option) any later version. | ||
| This library is distributed in the hope that it will be useful, | ||
| but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
| Lesser General Public License for more details. | ||
| You should have received a copy of the GNU Lesser General Public | ||
| License along with this library; if not, write to the Free Software | ||
| Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | ||
| */ | ||
| #include "drivers/NVM/Flash.h" | ||
|
|
||
| FlashClass Flash; | ||
|
|
||
| uint32_t FlashClass::page_size() const | ||
| { | ||
| return (size_t)NRF_FICR->CODEPAGESIZE; | ||
| } | ||
|
|
||
| uint8_t FlashClass::page_size_bits() const | ||
| { | ||
| #if defined(NRF51) | ||
| return 10; | ||
| #elif defined(NRF52) | ||
| return 12; | ||
| #endif | ||
| } | ||
|
|
||
| uint32_t FlashClass::page_count() const | ||
| { | ||
| return (uint32_t)NRF_FICR->CODESIZE; | ||
| } | ||
|
|
||
| uint32_t FlashClass::specified_erase_cycles() const | ||
| { | ||
| return FLASH_ERASE_CYCLES; | ||
| } | ||
|
|
||
| uint32_t *FlashClass::page_address(size_t page) | ||
| { | ||
| return (uint32_t *)(page << page_size_bits()); | ||
| } | ||
|
|
||
| void FlashClass::erase(uint32_t *address, size_t size) | ||
| { | ||
| size_t end_address = (size_t)address + size; | ||
|
|
||
| // align address | ||
| address = | ||
| (uint32_t *)((size_t)address & (size_t)((size_t)(~0) - FLASH_PAGE_SIZE)); | ||
|
|
||
| // Wrong parameters? | ||
| if ((size_t)address >= end_address) { | ||
| return; | ||
| } | ||
|
|
||
| // get old nvm controller state | ||
| uint32_t old_config = NRF_NVMC->CONFIG; | ||
|
|
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| // Enable erasing flash | ||
| NRF_NVMC->CONFIG = NVMC_CONFIG_WEN_Een << NVMC_CONFIG_WEN_Pos; | ||
|
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||
| // Erase page(s) | ||
| while ((size_t)address < end_address) { | ||
| wait_for_ready(); | ||
| // Erase one 1k/4k page | ||
| NRF_NVMC->ERASEPAGE = (size_t)(address); | ||
| address = (uint32_t *)((size_t)address + FLASH_PAGE_SIZE); | ||
| } | ||
|
|
||
| // Disable erasing | ||
| wait_for_ready(); | ||
| NRF_NVMC->CONFIG = NVMC_CONFIG_WEN_Ren << NVMC_CONFIG_WEN_Pos; | ||
|
|
||
| // Restore old state | ||
| wait_for_ready(); | ||
| NRF_NVMC->CONFIG = old_config; | ||
|
|
||
| // Go back if controller is ready | ||
| wait_for_ready(); | ||
| } | ||
|
|
||
| void FlashClass::erase_all() | ||
| { | ||
| // Enable erasing flash | ||
| NRF_NVMC->CONFIG = NVMC_CONFIG_WEN_Een << NVMC_CONFIG_WEN_Pos; | ||
| wait_for_ready(); | ||
|
|
||
| // Erase Flash and UICR | ||
| NRF_NVMC->ERASEALL = 1; | ||
| wait_for_ready(); | ||
|
|
||
| // Disable erasing | ||
| NRF_NVMC->CONFIG = NVMC_CONFIG_WEN_Ren << NVMC_CONFIG_WEN_Pos; | ||
| wait_for_ready(); | ||
| } | ||
|
|
||
| void FlashClass::write(uint32_t *address, uint32_t value) | ||
| { | ||
| // Compare word | ||
| if (*address != value) { | ||
| // Enable write | ||
| NRF_NVMC->CONFIG = NVMC_CONFIG_WEN_Wen << NVMC_CONFIG_WEN_Pos; | ||
| wait_for_ready(); | ||
| // Write word | ||
| *address = value; | ||
| // Disable write | ||
| wait_for_ready(); | ||
| NRF_NVMC->CONFIG = NVMC_CONFIG_WEN_Ren << NVMC_CONFIG_WEN_Pos; | ||
| wait_for_ready(); | ||
| } | ||
| } | ||
|
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||
| void FlashClass::write_block(uint32_t *dst_address, uint32_t *src_address, | ||
| uint16_t word_count) | ||
| { | ||
| // Enable write | ||
| NRF_NVMC->CONFIG = NVMC_CONFIG_WEN_Wen << NVMC_CONFIG_WEN_Pos; | ||
| wait_for_ready(); | ||
|
|
||
| while (word_count > 0) { | ||
| if (*dst_address != *src_address) { | ||
| *dst_address = *src_address; | ||
| } | ||
| word_count--; | ||
| dst_address++; | ||
| src_address++; | ||
| } | ||
|
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||
| // Disable write | ||
| wait_for_ready(); | ||
| NRF_NVMC->CONFIG = NVMC_CONFIG_WEN_Ren << NVMC_CONFIG_WEN_Pos; | ||
| wait_for_ready(); | ||
| } | ||
|
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||
| void FlashClass::wait_for_ready() | ||
| { | ||
| while (NRF_NVMC->READY == NVMC_READY_READY_Busy) { | ||
| }; | ||
| } |
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