AnsweredAssumed Answered

Having some problems with writing in the flash from an LPC 54114 over ISP using I2C.

Question asked by Jakob Hille on Oct 22, 2016
Latest reply on Oct 25, 2016 by jeremyzhou

Hi All,

I have some issues with my LPC 54114 Board trying to program the flash over I2C.

In my application I am calling the reinvoke ISP command and set it to I2C.

Afterwards I can speak to the LPC over I2C. I get the version (AW is 55 A1 02 00 80 01) and I can read pages. I am able to write pages to the flash but not page 0 and I have to reduce the CLK speed to 10 kbit/s (Datasheet say CLK speed is able up to 1 MHz). So the earliest address I can write to is the 0x00000100. CRP is not active, address 0x000002FC has the value 0xFFFFFFFF.

Since my host system is low on memory I tried to write sub blocks but here I always get the answer: 55 AD 04 00 0C 00 00 00 (Insufficient number of parameters or invalid parameter).

My subblk looks like that:

AD 83 01 00 (128 Byte Data) 00 00 00 00 // I also tried with 81 as first subblk byte.


To create the image I use the LPCXpresso v8.1.4 IDE and uncomment the post build steps to generate a binary.

Since my image looks the same like the flash I wonder if I just can start to program at address 0x00000100 or if I need the first 256 bytes as well?

Also I would be glad if it is possible to increase the CLK speed, maybe anyone has some ideas here?

Thank you very much in advance.