topic LPC55S16 SRAMX not working if array exceeds 400 bytes . in LPC Microcontrollers

LPC55S16 SRAMX not working if array exceeds 400 bytes .

alok_nigam — Mon, 12 Apr 2021 13:33:26 GMT

Hello All, I am using LPC55S16 controller for development . It contains 64 KB of SRAM, and 16 KB of SRAMX . In my application i am using a buffer like below uint8_t arrayBuff[1024]; If i change the location of above array in SRAMX , all data bytes are not filled and not working . To change the location i appended __SECTION(data,RAM3) __SECTION(data,RAM3) uint8_t arrayBuff[1024]; In build window it shows sramx is being used however complete array doesnt hold the values assigned .

Re: LPC55S16 SRAMX not working if array exceeds 400 bytes .

ZhangJennie — Wed, 14 Apr 2021 09:28:39 GMT

Hi alok_nigam,

Please create a demo project of this problem. I will check it on my side.

Thanks,

Jun Zhang

Re: LPC55S16 SRAMX not working if array exceeds 400 bytes .

frank_m — Wed, 14 Apr 2021 09:39:22 GMT

How about checking the map file ?