LPC4337, S25FL256S SPIFI DMA

Serial_Keiler — Mon, 05 May 2025 13:42:35 GMT

Hi everyone,

I'm working on a project with an LPC microcontroller and trying to write data from a buffer to external flash memory via SPIFI using DMA. The DMA transfer seems to complete without any errors during debugging, but when I check the flash memory afterwards, the data is not written. For setting up SPIFI i use LPCSPIFILIB.

Has anyone encountered a similar issue or could point me to what might be going wrong?

Thanks in advance for any suggestions or guidance!

Best regards,
Serial_Keiler

Code :

uint32_t bufor_data[64] __attribute__((at(0x10081000)));

for (i = 0; i < 0x100; i++)

{

bufor_data[i] = i*2;

}

LPC_GPDMA -> CH[0].CONTROL = 0x0;

LPC_GPDMA -> CH[0].CONFIG = 0x0;

LPC_CREG -> DMAMUX = 0x0;

LPC_GPDMA -> CH[0].CONFIG |= (5 << 11);

LPC_GPDMA -> CH[0].CONTROL |= ((1<<19)|(1<<25)|(1<<26));

LPC_GPDMA -> CH[0].SRCADDR = 0x10081000;

LPC_GPDMA -> CH[0].DESTADDR = 0x40003014;

LPC_SPIFI -> STAT |= SPIFI_STAT_RESET;

LPC_SPIFI -> STAT |= SPIFI_STAT_INTRQ;

LPC_SPIFI -> CMD |= SPIFI_WRITE_ENABLE;

while(LPC_SPIFI->STAT & (1<<1))

{

}

while (pSpifi->pFamFx->devGetStatus(pSpifi) & 1)

{

}

LPC_SPIFI -> ADDR = 0x14000000;

LPC_SPIFI -> CTRL |= (1<<31);

LPC_GPDMA -> CH[0].CONFIG |= 0x1;

NVIC_ClearPendingIRQ((IRQn_Type)30);

NVIC_EnableIRQ((IRQn_Type)30);

LPC_SPIFI -> CTRL |= (1<<22);

LPC_SPIFI -> STAT |= SPIFI_STAT_RESET;

LPC_SPIFI -> CMD = 0;

LPC_SPIFI -> CMD |= (0x02<<24) | (1 << 15) | (256);

while (LPC_SPIFI->STAT & (1<<1))

{

}

while (pSpifi->pFamFx->devGetStatus(pSpifi) & 1)

{

}

Re: LPC4337, S25FL256S SPIFI DMA

Alice_Yang — Wed, 07 May 2025 10:11:53 GMT

Hello @Serial_Keiler

Please refer to the thread discussing the same issue:

https://community.nxp.com/t5/LPC-Microcontrollers/DMA-to-from-SPIFI/m-p/566799

"it is not possible to write to flash using a DMA memory-to-memory transfer while in memory-mapped mode, because memory-mapped mode does not support flash programming.

However, it is possible to use DMA to send a write command! "

Alice

topic Re: LPC4337, S25FL256S SPIFI DMA in LPC Microcontrollers

LPC4337, S25FL256S SPIFI DMA

Re: LPC4337, S25FL256S SPIFI DMA