Maxim-integrated DS4830 Optical Microcontroller Manual de usuario descargar pdf (Pagina 226)

DS4830 User’s Guide

226

25.3.10 – UROM_copyBuffer

Function

UROM_copyBuffer

Summary

LC[0] bytes/words (up to 256) from DP[0] to BP[OFFS].

Inputs

DP[0]: Starting address to copy from.

BP[OFFS]: Starting address to copy to.

LC[0]: Number of bytes/words to copy.

Outputs

OFFS is incremented by LC[0]. DP[0] is incremented by LC[0].

Destroys

LC[0]

Notes:

 This function can be used to copy from program flash to data RAM, or from one part of data RAM to another. It

cannot be used to copy data into flash memory; the UROM_writeFlash function should be used for this purpose.

 Before calling this function, DPC should be set appropriately to configure DP[0] and BP[OFFS] for byte or word

mode. Both DP[0] and BP[OFFS] should be configured to the same mode (byte or word) for correct buffer copying.

 The addresses passed to this function should be based on the data memory mapping for the utility ROM, as shown

in Figure 25-1. When a byte mode address is used, CDA0 must be set appropriately to access either the upper or

lower half of program flash memory.

 This function automatically selects the data pointers before reading the byte/word values.

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Maxim-integrated DS4830 Optical Microcontroller Manual de usuario Pagina 226