MUG51使用PDMA内存到内存
/*---------------------------------------------------------------------------------------------------------*//* */
/* SPDX-License-Identifier: Apache-2.0 */
/* Copyright(c) 2022 Nuvoton Technology Corp. All rights reserved. */
/* */
/*---------------------------------------------------------------------------------------------------------*/
#include "MUG51.h"
/* IMPORTANT !! This define for printf code only. Disable this define to reduce code size. */
//#define print_function
/**
* @brief I2C0 master demo.
* @param None
* @return None
* @Details please confirm enable LXT and check work stable if use LXT as WKT clock source.
*/
unsigned char xdata RxDatabuffer _at_ 0x100;
unsigned char xdata finalbuffer _at_ 0x263;
unsigned char i;
bit pdmaflag = 0;
void PDMA1_ISR(void) interrupt 21 // Vector @0xAB
{
PDMA_Close(PDMA1);
clr_DMA1TSR_FDONE;
clr_DMA1TSR_HDONE;
pdmaflag = 1;
}
void main (void)
{
#ifdef print_function
/* UART0 initial setting
** include uart.c in Library for UART initial setting
**UART0 define P3.1 TXD multi function setting
**/
Enable_P31_UART0_VCOM_115200_printf();
printf("\n ADC trig by GPIO intial...");
#endif
for(i=0;i<100;i++)
{
RxDatabuffer=i;
}
/* Define PMDA function as memory to memory, and setting base address */
PDMA_Open(PDMA1,XRAM_XRAM,0x100,0x80);
/* Define destination memory address */
PDMA_MTM_DestinationAddress(PDMA1,0x200);
/* Define interrupt after full transfer */
PDMA_Interrupt_Enable(PDMA1,PDMAFULLINT);
ENABLE_GLOBAL_INTERRUPT;
PDMA_Run(PDMA1);
while(!pdmaflag);
#ifdef print_function
printf (" \n PDMA Tranfer Finish! 0x%bx", finalbuffer);
#endif
while(1);
}
从一个地址自动搬运到另外一个地址。 搬运数据用DMA确实很方便，这个新唐的库函数好用。 使用后自动搬运地址很方便啊，新唐可以啊 数据搬运方便是很好的一个点，省很大得力气 新唐的这个库函数好用能够快速的进行相关数据搬运处理，DMA内存处理确实很高效
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