adc0831（adc0831）

adc0831（adc0831） adc0831(adc0831) ADC0832 C program //============================================ //2005-03-28... 2005-03-29 The C51 program source file for the //ADC0834 module //FileName=ADC083X.c //#include #include "DELAY_S.h"" #include "ADC083X.h"" A predefined global variable external / //******************************************************* / / number: //HD_ADC083X_S01 / / function: / / port initialization / / input: / / no / / output: / / no //******************************************************** Voidadc083x_init (void) { SET_ADC083X_CS; SET_ADC083X_DO; CLR_ADC083X_CLK; #ifTYPE_VAL>=ADC0832.html, "target=", "_blank", "title=", "ADC0832", ">ADC0832" and "PDF" SET_ADC083X_DI; #endif #ifTYPE_VAL>=ADC0834 SET_ADC083X_SARS; #endif } //******************************************************* / / number: //HD_ADC083X_S02 / / function: Read data byte / / AD / / input: The //chanel channel number and the single and double end settings are selected, whose values are limited by type values! The effective value is select / / take a minimum of 4 and 3 respectively, 2 bit or not used / / specific values found in the PDF document! / / output: Result bytes for //AD conversion //******************************************************** Ucharadc083x_do_one_change (ucharchanel) { Uchardataad_val; Uchardatai; / / initialization before conversion SET_ADC083X_CS; CLR_ADC083X_CLK; SET_ADC083X_DO; CLR_ADC083X_CS; //SARS pins are not necessary when not in use to save pin resources! #if (TYPE_VAL==ADC0838) //chanel_.3.2.1.0=0000 channel 0+_ channel 1-, =001 channel 2+_ channel 3- (double ended mode) //SGL/DIFODD/SIGNSELECTSELECT=0010 channel 4+_ channel 5-, =011 channel 6+_ channel 7- (double ended mode) //=0100 channel 0-_ channel 1+, =0101 channel 2-_ channel 3+ (double ended mode) //=0110 channel 4-_ channel 5+, =0111 channel 6-_ channel 7+ (double ended mode) //=1000 channel 0+, =1001 Channel 2+ (single ended mode) //=1010 channel 4+, =1011 Channel 6+ (single ended mode) //=1100 channel 1+, =1101 Channel 3+ (single ended mode) //=1110 channel 5+, =1111 Channel 7+ (single ended mode) / / pin /SE can be grounded, do not use the control response byte output delay function! Chanel|=0x10; / / additional initiation For (i=0; i<5; i++) { If ((chanel&0x10) - =0) { SET_ADC083X_DI; } Else { CLR_ADC083X_DI; } seen _ adc083x _ clk; the clr _ adc083x _ clk; chanel < < = 1; } # elif (type _ val = = adc0834) / / chanel _.2.1.0 = 000通道0 + _ 通道1 -, = 001通道2 + _ 通 道3 -, (双端方式) / / sgl / difodd / signselect = 010通道0 - _ 通道1 + = 011 通道2 - _ 通 道3 + (双端方式) / / = 100通道0 + = 101通道2 + (单端方式) / / = 110通道1 + = 111通道3 + (单端方式) chanel | = 0x08; / / 附加起始位 for (i = 0; i < 4; i + +) { if ((chanel & 0x08)! = 0) { seen _ adc083x _ di; } else { the clr _ adc083x _ di; } seen _ adc083x _ clk; the clr _ adc083x _ clk; chanel < < = 1; } # elif (type _ val = = adc0832.html _ "target =" blank "title =" adc0832货源和pdf资料 "> adc0832) / / chanel _.1.0 = 00通道0 + _ 通道1 -, = 01通道0 - _ 通道 1 + (双端方式) / / sgl / difodd / sign = 10通道0 + = 11通道1 + (单端方式) chanel | = 0x04; / / 附加起始位 for (i = 0; i < 3; i + +) { if ((chanel & 0x04)! = 0) { seen _ adc083x _ di; } else { the clr _ adc083x _ di; } seen _ adc083x _ clk; the clr _ adc083x _ clk; chanel < < = 1; } # else / / 缺省时为adc0831 seen _ adc083x _ clk; the clr _ adc083x _ clk; # endif seen _ adc083x _ clk; / / 数据接收前的转换位 the clr _ adc083x _ clk; for (ad _ val = 0, i = 0; i < 8; i + +) { ad _ val < < = 1; seen _ adc083x _ clk; ad _ val + = (judge _ adc083x _ do = = 1? 1: 0); the clr _ adc083x _ clk; } / / 对非adc0831的型号而言, 后续波形没有使用! seen _ adc083x _ cs; return (ad _ val); } / / = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = / / endoffile adc0832.html _ "target =" blank "title =" adc0832货源和pdf 资料 "> adc0832 为8位分辨率a / d转换芯片, 其最高分辨可达256级, 可以适应 一般的模拟量转换要求.其内部电源输入与参考电压的复用, 使得芯片的模拟 电压输入在0 ~ 5v之间.芯片转换时间仅为32μs, 据有双数据输出可作为数据 校验, 以减少数据误差, 转换速度快且稳定性能强.独立的芯片使能输入, 使 多器件挂接和处理器控制变的更加方便.通过di 数据输入端, 可以轻易的实现 通道功能的选择. window.google _ running _ ad ();