Maxim-integrated MAXQ Family Users Guide: MAXQ2000 Supplement Manual de usuario descargar pdf (Pagina 60)

MAXQ Family User’s Guide:

MAXQ2000 Supplement

Command 05h—Get Supported Commands

The SupportL (LSB) and SupportH (MSB) bytes form a 16-bit value that indicates which command families this bootloader supports.

If bit 0 is set to 1, it indicates that Family 0 is supported. If bit 1 is set to 1, it indicates that Family 1 is supported, and so on.

The CodeLen and DataLen bytes return the fixed block lengths used by the Load/Dump/Verify Fixed Length commands for code and

data space, respectively.

Command 06h—Get Code Size

This command returns SizeH:SizeL, which represents the size of available code memory in words minus 1. If this command is unsup-

ported, the return value will be 0000h meaning “unknown amount of memory.”

Command 07h—Get Data Size

This command returns SizeH:SizeL, which represents the size of available data memory in words minus 1. If this command is unsup-

ported, the return value will be 0000h meaning “unknown amount of memory.”

Command 08h—Get Loader Version

FLAG BIT FUNCTION

Password Lock

0 = The password is unlocked or had a default value; password-protected commands can be used.

1 = The password is locked. Password-protected commands cannot be used.

Word/Byte Mode

0 = The bootloader is currently in byte mode for memory reads/writes.

1 = The bootloader is currently in word mode for memory reads/writes.

Word/Byte Mode Supported

0 = The bootloader supports byte mode only.

1 = The bootloader supports word mode as well as byte mode.

3 to 8 Reserved

Table 27. Bootloader Status Flags

I/O Byte 1 Byte 2 Byte 3 Byte 4

Input

05h

Output

SupportL SupportH CodeLen DataLen

I/O Byte 1 Byte 2

Input

06h

Output

SizeL SizeH

I/O Byte 1 Byte 2

Input

07h

Output

SizeL SizeH

I/O Byte 1 Byte 2

Input

08h

Output

VersionL VersionH

Maxim Integrated

1 2 ... 55 56 57 58 59 60 61 62 63 64 65 ... 92 93

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