topic Re: LPC4357 ISP mode code execution problem in LPC Microcontrollers

LPC4357 ISP mode code execution problem

deler — Mon, 01 Aug 2022 12:29:30 GMT

Hi All,

I am trying to do ISP programming board with MCB4300 dev board. To go into ISP mode I am pulling P2.7 LOW after power on (using push button- ISP) & my boot select pins P2_9, P2_8, P1_2 & P1_1 are set to LOW. With this setup I am able to program the MCU successfully.

BUT, the code is not executing post programming-

1. even if ISP switch is not pressed during next power up.

2. changing the boot select pin positions.

Code runs when-

1. I check "Go after programming" option in flashmagic software.

Also, MCB4300 stays in ISP mode even after multiple reset cycles, which I feel is the creating problems in code execution.

Can anyone please help me to resolve this issue. Thanks in advance.

Re: LPC4357 ISP mode code execution problem

Alice_Yang — Thu, 04 Aug 2022 07:19:54 GMT

Hello,

1) Please confirm whether your application project works well using debugger to download? Not use ISP mode program.

2) Make sure program successfully using Flash Magic.

3) How about power reset after using Flash Magic programed.

Alice

Re: LPC4357 ISP mode code execution problem

deler — Thu, 04 Aug 2022 07:29:07 GMT

Resolved the problem last night when I tick Activate Bank: "A" & untick Go After Programming. However, being new user of flashmagic, I would like to know if it is a correct solution? If its a correct the I will accept this as a solution.

Re: LPC4357 ISP mode code execution problem

Alice_Yang — Mon, 08 Aug 2022 02:46:24 GMT

Hello deler,

Yes, It is correct.

Alice