Hi!
I am trying to transfer data from one variable (or array/ADC) to another variable/array via DMA. Tried various combination, but not able to solve it.
I have attached the project too.
Here is one of the configuration what I tried.
\Cpu.c
void PE_low_level_init(void)
{
…
/* MPARK: BCR24BIT=0 */
clrReg32Bits(MPARK, 0x01000000UL);
/* DMAREQC: DMAC3=7,DMAC2=6,DMAC1=5,DMAC0=4 */
clrSetReg32Bits(DMAREQC, 0x89ABUL, 0x7654UL);
/* MPARK: M2_P_EN=1,M3_PRTY=3,M2_PRTY=2,M0_PRTY=0,M1_PRTY=1,FIXED=0,TIMEOUT=0,PRKLAST=0,LCKOUT_TIME=9 */
clrSetReg32Bits(MPARK, 0x001E7600UL, 0x02E10900UL);
/* MPR: MPR=5 */
clrSetReg8Bits(MPR, 0x0A, 0x05);
}
//Configured from PE
void init_tmr_dma0_Init(void)
{
/* DTMR0: PS=0xF9,CE=0,OM=0,ORRI=0,FRR=0,CLK=2,RST=0 */
setReg16(DTMR0, 0xF904U);
/* DTRR0: REF=0x5F5E */
setReg32(DTRR0, 0x5F5EUL);
/* DTXMR0: DMAEN=0,HALTED=1,??=0,??=0,??=0,??=0,??=0,MODE16=0 */
setReg8(DTXMR0, 0x40);
/* DTER0: ??=0,??=0,??=0,??=0,??=0,??=0,REF=1,CAP=1 */
setReg8(DTER0, 0x03);
/* DTMR0: RST=1 */
setReg16Bits(DTMR0, 0x01U);
}
//Configured from PE
\Vector.c
isr_dma0_done, /* 0x49 VBR+0x00000124 4 0 ivINT_DMA0_DONE used by PE */
//Variable decleration:
UINT16 dma0_in_buff = 5;
UINT16 dma1_in_buff = 0;
//Function called from main
void an_init_dma0(void)
{
SAR0 = (UINT16)&dma0_in_buff;
DAR0 = (UINT16)&dma1_in_buff;
DSR0 = DSR0_DONE_BITMASK;
BCR0 = 2;
DCR0 = DCR0_INT_BITMASK | DCR0_AA_BITMASK | DCR0_START_BITMASK |
(0 << DCR0_SMOD0_BITMASK) | (0 << DCR0_DMOD0_BITMASK) |
(2 << DCR0_SSIZE0_BITMASK) | (2 << DCR0_DSIZE0_BITMASK);
}
//DMA ISR
__declspec(interrupt) void isr_dma0_done(void)
{
//In case of BCR = 0
if(testReg32Bits(DSR0, DSR0_DONE_BITMASK))
{
setReg32(DSR0, DSR0_DONE_BITMASK);
BCR0 = 2;
DCR0 |= DCR0_START_BITMASK;
}
}
Anyone can please let me know where is the miss.
Br,
LB
