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switch nvm.ByteArray to use new nrf_nvm_safe_flash_page_write

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adafruit/circuitpython#1610
This commit is contained in:
Nick Moore 2019-04-04 15:42:33 +11:00
parent cd69db7770
commit bc92441803
1 changed files with 3 additions and 7 deletions
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10
ports/nrf/common-hal/nvm/ByteArray.c
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@ -29,7 +29,7 @@
#include <stdio.h>
#include <string.h>
#include "nrf_nvmc.h"
#include "peripherals/nrf/nvm.h"
uint32_t common_hal_nvm_bytearray_get_length(nvm_bytearray_obj_t *self) {
return self->len;
@ -38,18 +38,14 @@ uint32_t common_hal_nvm_bytearray_get_length(nvm_bytearray_obj_t *self) {
static void write_page(uint32_t page_addr, uint32_t offset, uint32_t len, uint8_t *bytes) {
// Write a whole page to flash, buffering it first and then erasing and rewriting
// it since we can only clear a whole page at a time.
// TODO (maybe) check if only clearing bits (don't need to erase)
// XXX should this suspend interrupts so erase/write is atomic?
if (offset == 0 && len == FLASH_PAGE_SIZE) {
nrf_nvmc_page_erase(page_addr);
nrf_nvmc_write_bytes(page_addr, bytes, FLASH_PAGE_SIZE);
nrf_nvm_safe_flash_page_write(page_addr, bytes);
} else {
uint8_t buffer[FLASH_PAGE_SIZE];
memcpy(buffer, (uint8_t *)page_addr, FLASH_PAGE_SIZE);
memcpy(buffer + offset, bytes, len);
nrf_nvmc_page_erase(page_addr);
nrf_nvmc_write_bytes(page_addr, buffer, FLASH_PAGE_SIZE);
nrf_nvm_safe_flash_page_write(page_addr, buffer);
}
}