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? ? ? ? 最消费类的方案开发，一直用到九齐的片子，带AD的基本都是062D，但是后面推出了062E代替了D版，看资料，使用AD需要一个零点校准的初始化程序，刚开始也一脸懵逼，经过一番摸索有，在这里做一个记录，
//ADC初始化校准 ---------------------------------------------------------------------------------
//void F_ADJMD(void)
//void F_GND_Convert(char count)
//void ADC_Calibration_Pro(void)
void F_GND_Convert(char count)
{
? ?? ?char i;
? ?? ?ADMD ?= 0x90 | C_VSS;?? ??? ??? ??? ?// Select (GND) pad as ADC input
? ?? ?CLRWDT();?? ??? ??? ??? ??? ??? ??? ?//clear WDT, which is defined in NY8Common.h
? ?? ?delay(100);?? ??? ??? ??? ??? ??? ??? ?// Delay 0.56ms(Instruction clock=4MHz/2T) for waiting ADC stable
? ?? ?for(i=1;i<=count;i++)
? ?? ?{ ? ? ?? ??? ??? ??
? ?? ? ADMDbits.START = 1;?? ??? ??? ??? ?// Start a ADC conversion session
? ?? ? while(ADMDbits.EOC == 0)
? ??? ??? ?;?? ??? ??? ??? ??? ??? ??? ??? ?// Waiting for ADC conversion complet?? ?
? ?? ? R_AIN_DATA_LB += ( 0x0F & ADR);?
? ?? ?}
}
void F_ADJMD(void)
{
?? ?DISI();
?? ?ADMDbits.GCHS = 1;?? ??? ??? ??? ??? ?// Enable global ADC channel?? ?(SFR "ADMD")
? ? F_GND_Convert(8);?? ??? ??? ??? ??? ?// executing GND ADC converting 8 times
? ? R_AIN_DATA_LB >>= 3;?? ??? ??? ??? ?// Only get Bit7~4
?? ?if(R_AIN_DATA_LB >= 2)
?? ?{
?? ??? ?ADJMD = 0x00;
?? ??? ?while(1)
?? ??? ?{
?? ??? ??? ?CLRWDT();
?? ??? ??? ?R_AIN_DATA_LB = 0;
?? ? ? ? ? ?F_GND_Convert(8);?? ??? ??? ?// executing GND ADC converting 8 times
?? ? ? ??? ?R_AIN_DATA_LB >>= 3;?? ??? ?// Only get Bit7~4
?? ??? ??? ?if((ADJMD<0x1F) & (R_AIN_DATA_LB >= 2)){ADJMD++;}
?? ? ? ? ? ?else if(ADJMD == 0x1F){ADJMD = 0x00;break;}
?? ? ? ? ? ?else {R_AIN_DATA_LB = 1;break;}
?? ??? ?}
?? ?} ? ?
?? ?if(R_AIN_DATA_LB == 0)
?? ?{
?? ??? ?ADJMD = 0x20;
?? ??? ?while(1)
?? ??? ?{
?? ??? ??? ?CLRWDT();
?? ? ? ? ? ?R_AIN_DATA_LB = 0;
?? ? ? ? ? ?F_GND_Convert(8);?? ??? ??? ??? ??? ?// executing GND ADC converting 8 times
?? ? ? ?? ? ?? ?R_AIN_DATA_LB >>= 3;?? ??? ??? ??? ?// Only get Bit7~4
?? ??? ??? ?if((ADJMD<0x3F)&(R_AIN_DATA_LB == 0)){ADJMD++;}
?? ? ? ? ? ?else if(ADJMD == 0x3F){ADJMD = 0x20;break;}?? ??? ?
?? ? ? ? ? ?else {break;} ?
?? ??? ?}
?? ?}
}
void ADC_Calibration_Pro(void)
{
?? ?//----- Initial ADC-----?? ? ?
?? ?ADMD ?= C_ADC_En | C_ADC_CH_Dis | C_VSS ;?? ?// Enable ADC power, Disable global ADC input channel. Select PA1 pad as ADC input (SFR "ADMD")
?//----- ADC high reference voltage source select-----
//?? ?ADVREFH = C_Vrefh_VDD;?? ??? ??? ??? ??? ?// ADC reference high voltage is supplied by internal VDD (Note: ADC clock freq. must be equal or less than 2MHz @ VDD=5.0V)?
// ?? ?ADVREFH = C_Vrefh_4V;?? ??? ??? ??? ??? ?// ADC reference high voltage is supplied by internal 4V ?(Note: ADC clock freq. must be equal or less than 1MHz)
// ?? ?ADVREFH = C_Vrefh_3V;?? ??? ??? ??? ??? ?// ADC reference high voltage is supplied by internal 3V ?(Note: ADC clock freq. must be equal or less than 500KHz)
??? ?ADVREFH = C_Vrefh_2V;?? ??? ??? ??? ??? ?// ADC reference high voltage is supplied by internal 2V ?(Note: ADC clock freq. must be equal or less than 250KHz)
? ?? ?delay(100);?? ??? ??? ??? ??? ??? ??? ??? ?// 4M/2T , 0.56mS
//----- ADC clock frequency select----------------------------?? ??
//?? ?ADR?? ? = C_Ckl_Div1;?? ??? ??? ??? ??? ??? ?// ADC clock=Fcpu/1, Clear ADIF, disable ADC interrupt?? ?
//?? ?ADR?? ? = C_Ckl_Div2;?? ? ?? ??? ??? ??? ?// ADC clock=Fcpu/2, Clear ADIF, disable ADC interrupt?? ?
? ? ADR?? ? ?= C_Ckl_Div8;?? ??? ??? ??? ??? ?// ADC clock=Fcpu/8, Clear ADIF, disable ADC interrupt?? ?
//?? ?ADR?? ? = C_Ckl_Div16;?? ??? ??? ??? ??? ?// ADC clock=Fcpu/16, Clear ADIF, disable ADC interrupt?? ?
?
//----- ADC Sampling pulse width select-------------?? ??
? ? ADCR ?= C_Sample_1clk | C_12BIT;?? ??? ?// Sample pulse width=1 adc clock, ADC select 12-bit conversion ( Note: ADC clock freq. must be equal or less than 500KHz)
// ?? ?ADCR ?= C_Sample_2clk | C_12BIT;?? ??? ?// Sample pulse width=2 adc clock, ADC select 12-bit conversion ( Note: ADC clock freq. must be equal or less than 1MHz)
// ?ADCR ?= C_Sample_4clk | C_12BIT;?? ??? ?// Sample pulse width=4 adc clock, ADC select 12-bit conversion ( Note: ADC clock freq. must be equal or less than 1.25MHz)
// ?? ?ADCR ?= C_Sample_8clk | C_12BIT; ?? ??? ?// Sample pulse width=8 adc clock, ADC select 12-bit conversion ( Note: ADC clock freq. must be equal or less than 2MHz)?? ?
//--------------------------------------------------?? ?
?? ?ADJMD = 0x00;
?? ?F_ADJMD();
}
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