A.2 Program Development (Assembler, C-Compiler, Linker)
Program Development (Assembler, C-Compiler, Linker)
12. Information memory may not be blank (erased to 0xFF) when the device is delivered from TI.
Customers should erase the information memory before its first usage. Main memory of packaged
devices is blank when the device is delivered from TI.
13. The device current increases by approximately 10 µ A when a device in low-power mode is
stopped (using ESC), and then the low-power mode is restored (using Go). This behavior appears
to happen on all devices except the MSP430F12x.
14. The following ZIF sockets are used in the FET tools and target socket modules:
• 14-pin device (PW package): ENPLAS OTS-14-065-01
• 20-pin device (PW package): Yamaichi IC189-0202-64
• 28-pin device (DW package): Wells-CTI 652 D028
• 38-pin device (DA package): Yamaichi IC189-0382-037
• 40-pin device (RHA package): Enplas QFN-40B-0.5-01
• 48-pin device (DL package): Yamaichi IC51-0482-1163
• 64-pin device (PM package): Yamaichi IC51-0644-807
• 80-pin device (PN package): Yamaichi IC201-0804-014
• 100-pin device (PZ package): Yamaichi IC201-1004-008
ENPLAS: www.enplas.com
Wells-CTI: www.wellscti.com/
Yamaichi: www.yamaichi.us/
15. Supply current measurement on target socket modules. On each module a jumper connects V
CC
with VCC430. If this jumper is removed and an ampere meter is connected to the jumper pins, the
supply current of the module can be measured. As the pullup resistor (47 k Ω ) on the reset line is
connected to V
CC
, the MSP430 device sees a marginal voltage at pin RST/NMI if V
CC
is present and
the jumper is open. Therefore, V
CC
should be applied after the ampere meter has been connected.
1. The files supplied in the 430\tutor folder work only with the simulator. Do not use the files with
the FET (see FAQ Program Development #11 ).
2. A common MSP430 "mistake" is to fail to disable the Watchdog mechanism; the Watchdog is
enabled by default, and it resets the device if not disabled or properly handled by the application (see
FAQ Program Development #14 ).
3. When adding source files to a project, do not add files that are included by source files that
have already been added to the project (for example, an .h file within a .c or .s43 file). These files
are added to the project file hierarchy automatically.
4. In assembler, enclosing a string in double quotes ("string") automatically appends a zero byte to
the string (as an end-of-string marker). Enclosing a string in single-quotes ('string') does not.
5. When using the compiler or the assembler, if the last character of a source line is backslash (\),
the subsequent carriage return/line feed is ignored (i.e., it is as if the current line and the next line
are a single line). When used in this way, the backslash character is a "line continuation" character.
6. The linker output format must be "Debug information for C-SPY" (.d43) for use with C-SPY.
C-SPY does not start otherwise, and an error message is output. C-SPY cannot input a .TXT file.
7. Position-independent code can be generated using Project → Options → General Options →
Target → Position-Independent Code.
8. Within the C libraries, GIE (Global Interrupt Enable) is disabled before (and restored after) the
hardware multiplier is used. To disable this behavior, contact TI for the source code for these
libraries.
9. It is possible to mix assembler and C programs within the Workbench. See the Assembler
Language Interface chapter of the C/C++ Compiler Reference Guide from IAR.
10. The Workbench can produce an object file in TI .TXT format. C-SPY cannot input an object file in TI
.TXT format. An error message is output in this case.
SLAU138F – June 2004 – Revised March 2007 Frequently Asked Questions 31
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