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MSPM0G3507: Programming via external XDS110

Danilo A.
Mastermind 30830 points
Part Number: MSPM0G3507


Hi Team,

Posting on behalf of our customer.

I'm trying to use the XDS110-ET on an LP-MSPM0G3507 LaunchPad to program an external MSPM0G3507SRHBR chip following section 2.3.6 of the LaunchPad User's Guide.

Current connections:

  • Removed all J101 jumpers
  • Connected J102 SWDIO -> target SWDIO (PA20)
  • Connected J102 SWCLK -> target SWCLK (PA19)
  • Connected GND
  • Target NRST is hard-wired to VDD (pullup only, no external access)

Errors received: 

  1. Error connecting to the target: DAP Connection Error. This could be caused by the device having gone to low power mode. Try forcing an external reset.
  2. CS_DAP_0: Error connecting to the target: (Error -614 @ 0x0) 
    The target indicates there is an error condition from a previous SWD  request. 
    Clear the error the condition, and try the SWD request again. (Emulation package 20.1.0.3429) 

My questions:

  1. Is connecting J102 NRST to the target NRST pin mandatory for initial programming of a blank chip? Since no application code has ever run, the device shouldn't be in low-power mode or have SWD disabled.
  2. Does the XDS110 require NRST control even for the initial SWD connection handshake, or should SWDIO/SWCLK be sufficient for a factory-fresh device?
  3. The datasheet (SLAU846B section 9.1.1, Figure 9-1) shows NRST with 47kΩ pullup + 10nF cap, and the debug tool connection diagram includes NRST. Is this connection mandatory, or just recommended for debugging running code?

 

Regards,

Danilo

  • 0
    TI__Mastermind 26575 points

    Hi Danilo,

    Danilo A. said:
    Is connecting J102 NRST to the target NRST pin mandatory for initial programming of a blank chip? Since no application code has ever run, the device shouldn't be in low-power mode or have SWD disabled.

    For a blank device, NRST line is not required for programming. At this case, device enter standby0 low power mode after power up with 10s, but XDS110 support to program when device in standby0 mode.

    Danilo A. said:
    Does the XDS110 require NRST control even for the initial SWD connection handshake, or should SWDIO/SWCLK be sufficient for a factory-fresh device?

    This is also not must to have, but better to have as if device enter fault status (example: image program flow broken due to hardware connection issue or noise issue), then it might need NRST to program again.

    Danilo A. said:
    Is this connection mandatory, or just recommended for debugging running code?

    Better to have. As in debug/program phase, there will have accident that program break, which need reset signal to generate recover flow.

    B.R.

    Sal