void DAC12_SoftwareTriggerLoop(void){
int j = 0 ;
while (1){
DAC_C0_REG(DAC0_BASE_PTR) |= DAC_SW_TRIG_NEXT; //SW trigger to advance to DAC0's next word buffer
DAC_C0_REG(DAC1_BASE_PTR) |= DAC_SW_TRIG_NEXT; //SW trigger to advance to DAC1's next word buffer
for (j=0;j<10000;j++){} // random delay
}
}
void DAC12_buffered (DAC_MemMapPtr dacx_base_ptr, byte WatermarkMode, byte BuffMode, byte Vreference, byte TrigMode, byte BuffInitPos,byte BuffUpLimit){
DAC_C0_REG(dacx_base_ptr) = (
DAC_BFB_PTR_INT_DISABLE |
DAC_BFT_PTR_INT_DISABLE |
DAC_BFWM_INT_DISABLE |
DAC_HP_MODE |
DAC_SW_TRIG_STOP |
TrigMode |
Vreference |
DAC_ENABLE // DAC enalbed
);
if ( Vreference == DAC_SEL_VREFO ) {
VREF_Init();
}// end of if
DAC_C1_REG(dacx_base_ptr) = (
DAC_BF_ENABLE | //Buffer Enabled
WatermarkMode | // set 1, 2, 3,or 4 word(s) mode
BuffMode // set traversal mode, normal, swing, or onetime
) ;
DAC_C2_REG(dacx_base_ptr) = BuffInitPos | BuffUpLimit;
}//end of DAC12_buffered
void DAC12_Vin_SWtrig(DAC_MemMapPtr dacx_base_ptr, unsigned char VrefSel) {
DAC_C0_REG(dacx_base_ptr) = (
DAC_BFB_PTR_INT_DISABLE | // DACBIE =0 , buffer read pointer bottom flag interrupt is disabled
DAC_BFT_PTR_INT_DISABLE | // DACTIE = 0 ,buffer read pointer top flag interrupt is disabled
DAC_BFWM_INT_DISABLE | // DACWIE = 0, buffer water mark interrupt disabled
DAC_HP_MODE | // LPEN = 0, low power mode
DAC_SW_TRIG_STOP | // NO Software trigger yet
DAC_SEL_SW_TRIG | // DACTSEL =1, Databuffer outputs to DACO pin whenever a write to DACDAT0
VrefSel |
DAC_ENABLE //DAC enalbed
);
if ( VrefSel == DAC_SEL_VREFO ) {
VREF_Init();
}// end of if
DAC_C1_REG(dacx_base_ptr)= (
DAC_BF_DISABLE | // Buffer read pointer is disabled, converted data is always the first word of buffer = DACCCDAT0
DAC_BF_NORMAL_MODE |
DAC_BFWM_1WORD |
DAC_DMA_DISABLE
) ;
DAC_C2_REG(dacx_base_ptr) = DAC_SET_PTR_AT_BF(0)| DAC_SET_PTR_UP_LIMIT(0x0f);
}// end of DAC12_Vin_SWtrig
void DACx_register_reset_por_values (DAC_MemMapPtr dacx_base_ptr){
unsigned char dacbuff_index = 0 ;
for (dacbuff_index=0; dacbuff_index<16;dacbuff_index++){
SET_DACx_BUFFER( dacx_base_ptr, dacbuff_index, DACx_DAT_RESET);
}
DAC_SR_REG(dacx_base_ptr) = DACx_SR_RESET ;
DAC_C0_REG(dacx_base_ptr) = DACx_C0_RESET ;
DAC_C1_REG(dacx_base_ptr) = DACx_C1_RESET;
DAC_C2_REG(dacx_base_ptr) = DACx_C2_RESET;
} //end of DACx_register_reset_por_values
void DAC12_Interrupt_Init(DAC_MemMapPtr dacx_base_ptr,byte watermark, byte zerobuffer, byte uplimitbuffer ){
if (dacx_base_ptr == DAC0_BASE_PTR ) {
NVICICPR2 |= (1<<17);
NVICISER2 |= (1<<17);
}else {
NVICICPR2 |= (1<<18);
NVICISER2 |= (1<<18);
}
DAC_C0_REG(dacx_base_ptr) |= watermark |zerobuffer | uplimitbuffer ;
}
//============================================================================
//函数名称：dac_set
//函数返回：无
//参数说明：dacx_base_ptr：DACx基指针
// VrefSel： 参考电压
//功能概要：配置DAC模块
//============================================================================
void dac_set(DAC_MemMapPtr dacx_base_ptr, uint8_t VrefSel)
{
//配置DAC_C0寄存器
DAC_C0_REG(dacx_base_ptr) = (
DAC_BFB_PTR_INT_DISABLE|//缓冲区置底中断禁止
DAC_BFT_PTR_INT_DISABLE|//缓冲区置顶中断禁止
//DAC_BFWM_INT_DISABLE |//水印中断禁止
DAC_HP_MODE |//高功耗模式
DAC_SW_TRIG_STOP |//软触发无效
DAC_SEL_SW_TRIG |//选择软件触发
VrefSel |//选择参考电压
DAC_ENABLE //使能DAC0模块
);
//配置DAC_C1寄存器
DAC_C1_REG(dacx_base_ptr)= (
DAC_BF_DISABLE |//DAC缓冲区禁止
DAC_BF_NORMAL_MODE |//DAC选择区选择正常工作模式
DAC_DMA_DISABLE //DMA禁止
) ;
}
