Texas Instruments MSP-FET430 manual Frequently Asked Questions

Frequently Asked Questions

2)C-SPY can download data into RAM, INFORMATION, and Flash MAIN memories. A warning message is output if an attempt is made to download data outside of the device memory spaces.

3)C-SPY can debug applications that utilize interrupts and low power modes. Refer to FAQ, Debugging #24).

4)C-SPY cannot access the device registers and memory while the device is running. C-SPY will display “-“ to indicate that a register/memory field is invalid. The user must stop the device in order to access device registers and memory. Any displayed register/memory fields will then be updated.

5)When C-SPY is started, the Flash memory is erased and the opened file is programmed in accordance with the download options as set in PROJECT->OPTIONS->FETDEBUGGER->DOWNLOADCONTROL->DOWNLOAD CONTROL. This initial erase and program operations can be disabled selecting PROJECT->OPTIONS-> FET DEBUGGER->DOWNLOAD CONTROL ->DOWNLOAD CONTROL- >SUPPRESS DOWNLOAD. Programming of the Flash can be initiated manually with EMULATOR->INIT NEW DEVICE.

6)The parallel port designators (LPTx) have the following physical addresses: LPT1: 378h, LPT2: 278h, LPT3: 3BCh. The configuration of the parallel port (ECP, Compatible, Bidirectional, Normal) is not significant; ECP seems to work well. Refer FAQ, Debugging #1) for additional hints on solving communication problems between C-SPY and the device.

7)C-SPY asserts RST/NMI to reset the device when C-SPY is started and when the device is programmed. The device is also reset by the C- SPY RESET button, and when the device is manually reprogrammed (EMULATOR->INIT NEW DEVICE), and when the JTAG is resynchronized (EMULATOR->RESYNCHRONIZE JTAG). When RST/NMI is not asserted (low), C-SPY sets the logic driving RST/NMI to high-impedance, and RST/NMI is pulled high via a resistor on the PCB.

RST/NMI is asserted and negated after power is applied when C-SPY is started. RST/NMI is then asserted and negated a second time after device initialization is complete.

Within C-SPY, EMULATOR->”POWER ON” RESET will cycle the power to the target to effect a reset.

8)C-SPY can debug a device whose program reconfigures the function of the RST/NMI pin to NMI.

9)The level of the XOUT/TCLK pin is undefined when C-SPY resets the device. The logic driving XOUT/TCLK is set to high-impedance at all other times.

10)When making current measurements of the device, ensure that the JTAG control signals are released (EMULATOR->RELEASE JTAG ON GO), otherwise the device will be powered by the signals on

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