topic Re: Flashing LPC1114 microcontroller manually in LPC Microcontrollers

Flashing LPC1114 microcontroller manually

thili_maha — Fri, 05 Aug 2022 10:19:16 GMT

I am trying to flash a controller manually, using write, copy to flash and read commands. While doing that is it acceptable to have a gap between the addresses ( not consecutive) which I write the program on to?

The write to flash accept only multiples of 256 byte at a time, but the data I can copy is 225 bytes, so because of that there will be a gap of 31 bytes to the next 256 boundary which I am allowed to write my data in.

will this be an issue to the run of the firmware?

Re: Flashing LPC1114 microcontroller manually

ZhangJennie — Mon, 08 Aug 2022 07:31:20 GMT

Hi thili_maha

For LPC1114, the minimal Flash programming/erasing unit is page which is 256 Byte. the minimal Flash reading unit is byte.

I suggest you filling the left 31byte with a defined value for example 0xFF then write totally 256 byte to a page.

if 225 byte is already written to Flash and you want to write the left 31byte, read out the 225 byte content out, then write 225+31 data to a page together.

Thanks,

Jun Zhang

Re: Flashing LPC1114 microcontroller manually

thili_maha — Mon, 08 Aug 2022 07:39:05 GMT

Hi ZhangJennie ,

Thanks for the reply. By doing that wouldn't the original characteristics/model of the program alter?

Thanks- Thili

Re: Flashing LPC1114 microcontroller manually

ZhangJennie — Mon, 08 Aug 2022 07:45:00 GMT

What "original characteristics/model of the program" do you refer to? Could you please be more specific?

Re: Flashing LPC1114 microcontroller manually

thili_maha — Mon, 08 Aug 2022 07:48:42 GMT

Hi ,

The way that the firmware runs and executes? , would that be changed by doing that?

Re: Flashing LPC1114 microcontroller manually

ZhangJennie — Mon, 08 Aug 2022 10:29:23 GMT

It doesn't affect.

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