Nordic nrf51 sdk sources. Mirrored from https://github.com/ARMmbed/nrf51-sdk.
source/nordic_sdk/components/drivers_nrf/hal/nrf_nvmc.c
- Committer:
- vcoubard
- Date:
- 2016-04-07
- Revision:
- 19:47192cb9def7
- Parent:
- 10:233fefd8162b
- Child:
- 20:a90c48eb1d30
File content as of revision 19:47192cb9def7:
/* Copyright (c) 2012 Nordic Semiconductor. All Rights Reserved. * * The information contained herein is property of Nordic Semiconductor ASA. * Terms and conditions of usage are described in detail in NORDIC * SEMICONDUCTOR STANDARD SOFTWARE LICENSE AGREEMENT. * * Licensees are granted free, non-transferable use of the information. NO * WARRANTY of ANY KIND is provided. This heading must NOT be removed from * the file. * * $LastChangedRevision: 17685 $ */ /** *@file *@brief NMVC driver implementation */ #include "stdbool.h" #include "nrf.h" #include "nrf_nvmc.h" void nrf_nvmc_page_erase(uint32_t address) { // Enable erase. NRF_NVMC->CONFIG = NVMC_CONFIG_WEN_Een; while (NRF_NVMC->READY == NVMC_READY_READY_Busy) { } // Erase the page NRF_NVMC->ERASEPAGE = address; while (NRF_NVMC->READY == NVMC_READY_READY_Busy) { } NRF_NVMC->CONFIG = NVMC_CONFIG_WEN_Ren; while (NRF_NVMC->READY == NVMC_READY_READY_Busy) { } } void nrf_nvmc_write_byte(uint32_t address, uint8_t value) { uint32_t byte_shift = address & (uint32_t)0x03; uint32_t address32 = address & ~byte_shift; // Address to the word this byte is in. uint32_t value32 = (*(uint32_t*)address32 & ~((uint32_t)0xFF << (byte_shift << (uint32_t)3))); value32 = value32 + ((uint32_t)value << (byte_shift << 3)); // Enable write. NRF_NVMC->CONFIG = (NVMC_CONFIG_WEN_Wen << NVMC_CONFIG_WEN_Pos); while (NRF_NVMC->READY == NVMC_READY_READY_Busy) { } *(uint32_t*)address32 = value32; while(NRF_NVMC->READY == NVMC_READY_READY_Busy) { } NRF_NVMC->CONFIG = (NVMC_CONFIG_WEN_Ren << NVMC_CONFIG_WEN_Pos); { } } void nrf_nvmc_write_word(uint32_t address, uint32_t value) { // Enable write. NRF_NVMC->CONFIG = NVMC_CONFIG_WEN_Wen; while (NRF_NVMC->READY == NVMC_READY_READY_Busy){ } *(uint32_t*)address = value; while (NRF_NVMC->READY == NVMC_READY_READY_Busy){ } NRF_NVMC->CONFIG = NVMC_CONFIG_WEN_Ren; while (NRF_NVMC->READY == NVMC_READY_READY_Busy) { } } void nrf_nvmc_write_bytes(uint32_t address, const uint8_t * src, uint32_t num_bytes) { uint32_t i; for(i=0;i<num_bytes;i++) { nrf_nvmc_write_byte(address+i,src[i]); } } void nrf_nvmc_write_words(uint32_t address, const uint32_t * src, uint32_t num_words) { uint32_t i; // Enable write. NRF_NVMC->CONFIG = NVMC_CONFIG_WEN_Wen; while (NRF_NVMC->READY == NVMC_READY_READY_Busy) { } for(i=0;i<num_words;i++) { ((uint32_t*)address)[i] = src[i]; while (NRF_NVMC->READY == NVMC_READY_READY_Busy) { } } NRF_NVMC->CONFIG = NVMC_CONFIG_WEN_Ren; while (NRF_NVMC->READY == NVMC_READY_READY_Busy) { } }