Cannot get a response from MSP430F5342 in BSL

I did as you asked, the code is as show:

LED0_ON();
LED1_ON();
while(1)
{
	if(SYSCTL && SYSBSLIND)
	{
		LED0_OFF();
		LED1_ON();
	}
	else
	{
		LED0_ON();
		LED1_OFF();
	}
}

When no sequence is applied, i.e. the MSP is left as it is, it stays in the else loop as you predicted. But, even after applying the sequence to it, the LED status indicates that it is still in the else loop. Hence, I believe that I am unable to put the MSP into BSL mode. I am unsure why that is, since the TEST and RESET sequence seems to be correct. The waveform as seen on the oscilloscope is as shown:

I apologize for the poor quality of the image, but the waveform is similar to the one in SLAU319L, which is shown below:

The value of t_SBW,en is 1 us according to the MSP430F5342 datasheet SLAS706E.

Hi,

I found some part of the documentation regarding timings confusing. The part is:

SLAU319L says:

"The BSL program execution starts when the TEST pin has received a minimum of two positive transitions and if TEST is high while RST/NMI rises from low to high (BSL entry method, see Figure 2). This level transition triggering improves BSL start-up reliability. The first high level of the TEST pin must be at least tSBW, En (see device-specific data sheet for tSBW, En parameter)."

Which means that the pulse width must be more than tSBW, En.

However, in the MSP430F5432 datasheet SLAS706E it says:

Which seems contradictory.

When I changed the timings to make the pulse width 0.1uS, neither of the LEDs are on, but the RESET pin is high. (Hence, MSP is not in RESET. Does this mean that it is in BSL? It still does not reply to commands like Mass erase.)

Thanks,
Virag

Hi,

To figure out if the problem is with the sequence or the BSL, I have modified the code on the F5342 to simply call the BSL by using the following code:

__disable_interrupt();
((void (*)())0x1000)();

Am I right in my assumption that this should remove any requirement of sending the proper sequence? In spite of that, I still cannot get any reply from the BSL. Does it mean that I need to program the BSL, and that the default BSL has somehow been corrupted?

Thanks,
Virag

I used the debugger to read the memory contents following 0x1000, which is the starting address for the BSL, and there appears to be a program there. Should I still try to reprogram the BSL with one of TI's releases?

I will certainly do as advised. I have the MSP-FET430UIF debugger, and use it with the Code Composer Studio. I have downloaded the release version matching with my IC. However, the BSL code is in hexadecimal form. Would you happen to know if it is possible to program it using CCS? Or do you know some other free software that I can use to program the BSL? I have tried the FET-Pro430 Lite as suggested here, but it seems unable to access the BSL's protected memory region.  

I do not know these things.  May be Luis RC will jump in and help you.

Hi,

You can use FET-Pro430 Lite to read the contents of BSL area and compare it with the expected contents.

In the tool, make sure you enable the BSL area in Setup->Memory Options (make sure you enable the BSL segments both for Read and for Erase/Write/Verify if you are reprogramming the device).

I recommend you to compare the contents with the released BSL image found in this software package: http://software-dl.ti.com/msp430/msp430_public_sw/mcu/msp430/MSPBSL_CustomBSL430/latest/index_FDS.html

Select the appropriate file in FET-Pro430 Lite (Open Code File), and then click on View->Compare Code File and Flash Data.

Besides that, can you tell us which EVM and device Rev are you using?

I just tried a Rev F device using a MSP-TS430RGZ48B board using the BSL rocket (https://www.olimex.com/Products/MSP430/BSL/MSP430-BSL/) and BSL scripter (http://www.ti.com/tool/mspbsl).

This is the entry sequence:

And this is one of the commands:

Regards,

Luis R