MSP430F5438 Debugging Notes-EEWORLD

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MSP430F5438 Debugging Notes

1.JTAG connection download problem:

Problem 1:

MSP430F5438 Debugging Notes - Tomorrow's Tomorrow - sxg_5's Blog

This means that JTAG did not find the MSP430F5438 device. The correct JTAG connection method is:

Pin 2 connected to VCC is JTAG power supply by default, and this power supply is obtained by USB feeding. Note: Under normal circumstances, when JTAG is powered, pin 4 needs to be left floating.

When external power supply is used, pin 2 also needs to be connected to VCC. Pin 4 can be left floating or connected to VCC. It is usually left floating to prevent the external power supply from mismatching the JTAG power supply voltage and causing JTAG abnormalities.

JTAG TEST pin processing:

I have seen Lierda's description of the IAR burning tool before, as shown below:

But this does not work with the 5 series 430, but the manual does not say so, and I suffered greatly. I communicated with the developer of the board and found that this was only tried with the 2 series and 4 series 430.

2. The USB emulator and parallel port emulator cannot be used at the same time.

possible reason:

        1) Parallel port FET should not be a simplified version - it will definitely not work without the Test pin.
        2) Do not have an external reset chip on the RST pin - a general principle.
        3) IAR430 version should be 4.21 or above - 4.20/4.11b may also work, I haven't tried it; 3.x version should not have 5 series...
        4) The power supply problem is handled well - is it the target board power supply or the parallel port power supply, choose one of the two, don't conflict, it is not clear whether this is the determining factor, but it is definitely something that needs to be considered.

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