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PICkit? Serial Analyzer User’s Guide
Macro commands are entered according to the sequence of events as defined by the
I 2 C bus protocol. Studying the example scripts is a good way to learn the sequence of
events. The example scripts can also be modified and saved under a different name.
CAUTION
The choice of macro commands is very flexible. Therefore, the correctness of the
script has to be verified by the user. The PICkit Serial Analyzer program does not
verify the correctness of the script.
A complete listing of the available macro commands is given in Table 4-2. The macro
command abbreviation will be displayed in the Transactions Window. The Transactions
window keeps a running log of the commands and data sent to and from the target
device.
FIGURE 4-9:
TABLE 4-2:
I 2 C? SCRIPT BUILDER – CREATING A SCRIPT
I 2 C? SCRIPT MACRO COMMAND
DS51647A-page 34
Macro Command
I2CINIT
I2CSTART
I2CSTOP
I2CRESTART
I2CWRTBYT
I2CRDBYT
I2CRDBLK
I2CBITRATE
I2CRESET
I2CRDBYTNLB
I2CRDBLKNLB
I2CAUX1RST
Command
Abbreviation
[I_]
[S_]
[P_]
[RS]
[W_]
[R_]
[RB]
[BR]
[RE]
[RN]
[RBN]
[A1RST]
Description
I 2 C? Initialization
I 2 C? Start
I 2 C? Stop
I 2 C? Restart
I 2 C? Write Bytes. Next byte is the byte count,
followed by the data.
I 2 C? Read Bytes. Next byte is the byte count.
I 2 C? Read Block
Set I 2 C? Bit Rate - min:0 = 35k, max:127 = 100k.
Next byte is the bit rate.
Reset MSSP module
Read bytes - NACK last byte. Next byte is the byte
count
Read block - NACK last byte
Reset AUX1
? 2007 Microchip Technology Inc.
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