TI中文支持网static __xdata uint16 adc_data[4];
void dma_channel_init ( uint16 __xdata *dest_adr, uint8 lenl, uint8 trig )
{ // Setup DMA confiuration
halDMADesc_t *ch = HAL_NV_DMA_GET_DESC();//dma0
HAL_DMA_SET_SOURCE(ch, &X_ADCL);
HAL_DMA_SET_DEST( ch, dest_adr );
HAL_DMA_SET_LEN(ch ,lenl);
HAL_DMA_SET_VLEN(ch ,HAL_DMA_VLEN_USE_LEN);
HAL_DMA_SET_WORD_SIZE(ch,HAL_DMA_WORDSIZE_WORD);
HAL_DMA_SET_TRIG_SRC(ch,trig);
HAL_DMA_SET_TRIG_MODE(ch,HAL_DMA_TMODE_BLOCK_REPEATED);
HAL_DMA_SET_SRC_INC(ch,HAL_DMA_SRCINC_1);
HAL_DMA_SET_DST_INC(ch,HAL_DMA_DSTINC_1);
HAL_DMA_SET_IRQ(ch,HAL_DMA_IRQMASK_ENABLE);
HAL_DMA_SET_M8(ch,HAL_DMA_M8_USE_8_BITS);
DMA0CFGL = ((uint16)ch) & 0x00FF;
DMA0CFGH = ((uint16)ch) >> 8 & 0x00FF;
DMAARM = 0x80; //aborts all channels
DMAIRQ = 0x00;// set dma interrupt to zero
DMAARM = 0x01;//starts channel 0
}
void dma_adc_int(void)
{
/* DMA configuration: * Set up DMA channel 0 for tranfer from ADCL and ADCH to * the ADC result table. The ADC will generate the DMA trigger * on end of conversion. */
// Configure DMA channel 0
dma_channel_init(adc_data, 4 , HAL_DMA_TRIG_ADC_CHALL);
// I/O-Port configuration
P0SEL|=0xF0; //1111 0000 通用IO
P0DIR&=0xF0; //1111 0000 0：输入 1：输出
APCFG |= HAL_ADC_CHANNEL_3 | HAL_ADC_CHANNEL_2 | HAL_ADC_CHANNEL_1 | HAL_ADC_CHANNEL_0;//模拟IO使能
// EA = 1; DMAIE = 1; DMAIF = 0;
ADCCON1 = 0x33;//full speed bit1 bit0
ADCCON2 = 0x30 | 0x80 | 0x04;//AVDD5 512 12ENOB P0_4 //启动ADC序列采集
//AIRQ = 0x00; //清中断标志
EA = 0x01; DMAIE = 0X01;//使能DMA
DMAIF = 0x00;
ADCCON1 |= 0x40;//启动ADC序列采集
DMAREQ = 0x01;//启动DMA传输
/* ADC conversion : * The ADC will run in continous mode until disabled. * Await all transfers being completed. */
while( DMAIRQ != (0x01));
// Stop Continuous mode //ADCCON1 |= ADCCON1_ST | BIT1 | BIT0;
}
dma和adc配置，程序运行只采样一次。
debug：
dma0 P0_0 1 2 3作为采样输入
VV：
你好，请问你的问题是什么，是没办法连续采样么？
谢谢！
