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标题: ble_flash_page_read读内部flash失败，不知道什么原因 [打印本页]

作者: cyneer 时间: 2017-12-8 00:32
标题: ble_flash_page_read读内部flash失败，不知道什么原因
本帖最后由 cyneer 于 2017-12-8 00:34 编辑

这是随便写的一个dome，之前用ble_flash_word_write把数据写入，返回成功，之后读取一直失败，ble_flash_page_read的第三个参数，到底是填1，还是填4，我看它自己的库也没有用到这个参数的内容,复上图以及库函数:

uint32_t ble_flash_page_read(uint8_t page_num, uint32_t * p_out_array, uint8_t * p_word_count)
{
int       byte_count;
uint32_t * p_page;
uint32_t * p_curr_addr;
uint32_t flash_header;
uint32_t calc_header;
uint16_t calc_crc;
uint32_t tmp;

p_page    = (uint32_t *)(BLE_FLASH_PAGE_SIZE * page_num);
p_curr_addr = p_page;

// Check if block is valid
flash_header = *p_curr_addr;
tmp = flash_header & 0xFFFF0000;
if (tmp != BLE_FLASH_MAGIC_NUMBER)
{
      *p_word_count = 0;
      return NRF_ERROR_NOT_FOUND;
}
p_curr_addr++;

// Read number of elements
*p_word_count = (uint8_t)(*(p_curr_addr));
p_curr_addr++;

// Read data
byte_count = (*p_word_count) * sizeof(uint32_t);
memcpy(p_out_array, p_curr_addr, byte_count);

// Check CRC
calc_crc = ble_flash_crc16_compute((uint8_t *)p_out_array,
                                    (*p_word_count) * sizeof(uint32_t),
                                    NULL);
calc_header = BLE_FLASH_MAGIC_NUMBER | (uint32_t)calc_crc;

if (calc_header != flash_header)
{
      return NRF_ERROR_NOT_FOUND;
}

return NRF_SUCCESS;
}

作者: admin 时间: 2017-12-13 19:18
参考这个帖子http://qfv8.com/forum.php?mod=vi ... &extra=page%3D1

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