Write byte

Question

Hi, 
 How can i write one byte to specific memory address with sd_flash_write() 
 Thanks

Petter Myhre · Accepted Answer

/**@brief Flash Write
 *
 * Commands to write a buffer to flash
 *
 * This call initiates the flash access command, and its completion will be communicated to the
 * application with exactly one of the following events:
 * - NRF_EVT_FLASH_OPERATION_SUCCESS - The command was successfully completed.
 * - NRF_EVT_FLASH_OPERATION_ERROR - The command could not be started.
 *
 * @note
 * - This call takes control over the radio and the CPU during flash erase and write to make sure that
 * they will not interfere with the flash access. This means that all interrupts will be blocked
 * for a predictable time (depending on the NVMC specification in nRF51 Series Reference Manual
 * and the command parameters).
 *
 *
 * @param[in] p_dst Pointer to start of flash location to be written.
 * @param[in] p_src Pointer to buffer with data to be written
 * @param[in] size Number of 32-bit words to write. Maximum size is 256 32bit words.
 *
 * @retval ::NRF_ERROR_INVALID_ADDR Tried to write to a non existing flash address, or p_dst or p_src was unaligned.
 * @retval ::NRF_ERROR_BUSY The previous command has not yet completed.
 * @retval ::NRF_ERROR_INVALID_LENGTH Size was 0, or more than 256 words.
 * @retval ::NRF_ERROR_FORBIDDEN Tried to write to or read from protected location.
 * @retval ::NRF_SUCCESS The command was accepted.
 */
SVCALL(SD_FLASH_WRITE, uint32_t, sd_flash_write(uint32_t * const p_dst, uint32_t const * const p_src, uint32_t size));

Write byte

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