LPC804 Unable To Flash after initial Flashing

TAG — Wed, 21 Feb 2024 21:20:11 GMT

Hi there,

I am having issues with my LPC804 ( ), whenever I initially flash the chip. The chip is no longer able to be detected by the debugger and is unable to be flashed. I have tried on both my custom board and the Development Board Section of the MCU-Link Pro and both have had the same outcome. When programming both with sample files they both worked prior to me programming my custom firmware, hence I am certain it is a software setup issue. From looking at the data sheets and such I believe it might be in the inital bootloader startup that is the issue, as I have removed the system_init(); function and system_lpc804 file from the build with the reset handler branching straight to main. Other than this I am unable to see what could be causing this issue and need some assistance.

My reset handler looks like this:

/* Reset Handler */ .thumb_func .align 2 .weak Reset_Handler .type Reset_Handler, %function Reset_Handler: ldr r0,=__main bx r0 .pool .size Reset_Handler, . - Reset_Handler

Re: LPC804 Unable To Flash after initial Flashing

Alice_Yang — Mon, 26 Feb 2024 09:04:52 GMT

Hello @TAG

Recommend program a simple SDK demo with Development Board. For example LED.

If you still have question about it, please kindly let me know.

Alice

topic LPC804 Unable To Flash after initial Flashing in LPC Microcontrollers

LPC804 Unable To Flash after initial Flashing

Re: LPC804 Unable To Flash after initial Flashing