lpc3250 - RAM.ini

I can think of many reasons to tweak the file, but none to remove it.

The functionality that is supplied in most sample code that I have seen (NXP and Keil) is useful and configurable; i.e., if a facility is not required, then it can be switched off.

People would normally get way further when asking questions if they not just ask a question, but also supply a reason. Asking the wrong questin may result in a simple yes or no answer. Supplying a reason for the question may result in an answer that is actually helpful.

Absolutely!!

Hi all

i'm posting this problum in forums from couple of weeks. No solution till. Can u please help me to overcome this problem. Its very urgent. Here i'm attaching my configuration.
Please Help..

My Source is Memory and Destination is peripheral. I have configured the DMA as
- 32bit wide Source and 32bit Destination.
- 8-byts source burst
- 8-byte Destination burst
- Transfer size as 8 bytes

GPDMA_CH0_CTRL     =0x85492008;    // 32 bit wide 8byte

I’m filling the memory with bytes and sending to the Peripheral (HSUART2TX).

Tx_Buffer_485[0]=0x37;
        Tx_Buffer_485[1]=0x36;
        Tx_Buffer_485[2]=0x35;
        Tx_Buffer_485[3]=0x34;
        Tx_Buffer_485[4]=0x33;
        Tx_Buffer_485[5]=0x32;
        Tx_Buffer_485[6]=0x31;
        Tx_Buffer_485[7]=0x30;

I’m getting data as 4spaces and 4 characters. ( 3210)
I tried all the way but unable to get the bytes.
My aim is to transfer t 8 bytes when I enable DMA Channel. (76543210).

here i'm attaching my main file also

int main(void)
{
        unsigned long pt;
        init_HSUART2();
        Init_DMA0();
   while(1)
      {
        Tx_Buffer_485[0]=0x37;
        Tx_Buffer_485[1]=0x36;
        Tx_Buffer_485[2]=0x35;
        Tx_Buffer_485[3]=0x34;
        Tx_Buffer_485[4]=0x33;
        Tx_Buffer_485[5]=0x32;
        Tx_Buffer_485[6]=0x31;
        Tx_Buffer_485[7]=0x30;

/************************* arranged key to enable dma after filled the busser*************/
/**************************for testing only***********************************************/
P2_MUX_SET=P2_MUX_SET|0x08;
        P2_DIR_CLR=0x00000040;  // Making GPIO_05 as input pin
         while((P2_INP_STATE&0x00000040)==0x00000040);
                while((P2_INP_STATE&0xFFFFFFBF)==0xFFFFFFBF);
/*****************************************************************************************/
        GPDMA_SOFT_BREQ |=0x00000080;           // HSUART 2 TX  Selected

         }


}

Here is the DMA Initialization

void Init_DMA0(void)
{
        DMACLK_CTRL             |=0x00000001;           // enable all DMA Clocks
        GPDMA_CH0_SRC    =(unsigned long)&Tx_Buffer_485[0];
        GPDMA_CH0_DEST   =0x40018000;
        GPDMA_CH0_LLI    =0x00000000;
        GPDMA_CH0_CTRL  =0x85492008;            // 32 bit wide 8byte
        GPDMA_CONFIG     |=0x00000001;          // Enable DMA Controller
        GPDMA_CH0_CFG    |=0x000009C1;          // memory  to Peripheraltrnasaction


}

Please help me with this. Its very urgent

Thanks
Eswar

hi

you first confirm the uart is working fine. disable dma. control uart directly without dma. and reset uart fifos before start of transmission.

thanks

I tested. and UART working fine. i send and received data through uart. for dma only this is happening.