关于CC1310 Flash操作的问题:
使用API函数NVS_write写入时长度只允许是4的倍数吗?这个在哪可以修改吗?为什么?
目前需要其他长度字节写入,每次都要转换为4的倍数,浪费了Flash空间。
WH HUANG:
/*! * @brief Write data to an NVS region. * * @param handle A handle returned from NVS_open() * * @param offset The byte offset into the NVS region to start * writing. * * @param buffer A buffer containing data to write to * the NVS region. * * @param bufferSize The size of the buffer (number of bytes to write). * * @param flags Write flags (NVS_WRITE_ERASE, NVS_WRITE_PRE_VERIFY, * NVS_WRITE_POST_VERIFY). * * @return NVS_STATUS_SUCCESS Success. * @return NVS_STATUS_ERROR If the internal flash write operation * failed, or if 'NVS_WRITE_POST_VERIFY' * was requested and the destination flash * range does not match the source * 'buffer' data. * @return NVS_STATUS_INV_OFFSET If 'offset + size' exceed the size * of the region. * @return NVS_STATUS_INV_WRITE If 'NVS_WRITE_PRE_VERIFY' is requested * and the destination flash address range * cannot be change to the values desired. * @return NVS_STATUS_INV_ALIGNMENT If 'NVS_WRITE_ERASE' is requested * and 'offset' is not aligned on * a sector bondary * * @remark This call may region to ensure atomic access to the region. */ extern int_fast16_t NVS_write(NVS_Handle handle, size_t offset, void *buffer,size_t bufferSize, uint_fast16_t flags); 没有 这种要求吧DD
user4934300:
回复 WH HUANG:
有的,为啥咱们的.h不一样
/*! * @brief Write data to an NVS block. * * @param handle A handle returned from NVS_open() * * @param offset The byte offset into the NVS block to start * writing. offset must be 4-byte aligned. * * @param buffer A buffer conntaining data to write to * the NVS block. If buffer is NULL, the block * will be erased. A non-NULL buffer must be * aligned on a 4-byte boundary. * * @param bufferSize The size of the buffer (number of bytes to write). * bufferSize must be a multiple of 4 bytes. * * @param flags Write flags (NVS_WRITE_EXCLUSIVE, NVS_WRITE_ERASE, * NVS_WRITE_VALIDATE). * * @return NVS_SOK Success. * @return NVS_EOFFSET The location and size to write to does not * lie completely within the NVS block. * @return NVS_EALIGN The offset or bufferSize is not 4-byte aligned. * @return NVS_ALREADYWRITTEN * The region to write to (the bufferSize region * starting at offset into the block) has already * been written to since the last erase, and * NVS_WRITE_EXCLUSIVE is set in the flags parameter. * * @remark This call may block to ensure atomic access to the block. */extern int NVS_write(NVS_Handle handle, size_t offset, void *buffer, size_t bufferSize, unsigned int flags);
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