Diff: nRF51822/nordic-sdk/components/drivers_nrf/hal/nrf_nvmc.c

Revision:

1:fc2f9d636751

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/nRF51822/nordic-sdk/components/drivers_nrf/hal/nrf_nvmc.c	Wed Apr 22 07:47:17 2015 +0000
@@ -0,0 +1,117 @@
+/* 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)
+  {
+  }
+}
+
\ No newline at end of file