DSPIC33F datasheet(54/80 Pages) MICROCHIP

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dsPIC33F/PIC24H PROGRAMMING SPECIFICATION

DS70152D-page 54

Preliminary

4.3.1.3

QE_Code Field

The QE_Code is a byte in the first word of the

response. This byte is used to return data for query

commands and error codes for all other commands.

When the programming executive processes one of the

two query commands (QBLANK or QVER), the returned

opcode is always PASS and the QE_Code holds the

query response data. The format of the QE_Code for

both queries is shown in Table 4-3.

TABLE 4-3:

QE_Code FOR QUERIES

When the programming executive processes any

command other than a Query, the QE_Code repre-

sents an error code. Supported error codes are shown

in Table 4-4. If a command is successfully processed,

the returned QE_Code is set to 0x0, which indicates

that there was no error in the command processing. If

the verify of the programming for the PROGP or PROGC

command fails, the QE_Code is set to 0x1. For all other

programming executive errors, the QE_Code is 0x2.

TABLE 4-4:

QE_Code FOR NON-QUERY

COMMANDS

4.3.1.4

Response Length

The response length indicates the length of the

programming executive’s response in 16-bit words.

This field includes the 2 words of the response header.

With the exception of the response for the READP

command, the length of each response is only 2 words.

The response to the READP command uses the packed

instruction word format described in Section 4.2.2

“Packed Data Format”. When reading an odd number

of program memory words (N odd), the response to the

READP

command is (3 * (N + 1) / 2 + 2) words. When

reading an even number of program memory words

(N even), the response to the READP command is (3 *

N / 2 + 2) words.

Query

QE_Code

QBLANK

0x0F = Code memory is NOT blank

0xF0 = Code memory is blank

QVER

0xMN, where programming executive

software version = M.N

(i.e., 0x32 means software version 3.2).

QE_Code

Description

0x0

No error.

0x1

Verify failed.

0x2

Other error.

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