XADC内嵌在PS端的使用
xadc内嵌在ps端，允许cpu或其他主机连接xadc，而不用使用pl端。xadc最大采样率为1msps，精度为12bits，内置电压和温度传感器，可监测芯片的电压及温度信息。如图所示电压传感器可监测芯片的vccint,vccaux,vccbram等，vp_0和vn_0为一对专用的adc模拟输入口。vauxp[*]和vauxn[*]也是adc输入口，但是不用作adc输入口时，可用作普通io使用。
int xadcpolledprintfexample(u16 xadcdeviceid)
{
int status;
xadcps_config *configptr;
u32 temprawdata;
u32 vccpintrawdata;
u32 vccpauxrawdata;
u32 vccpdrorawdata;
float tempdata;
float vccpintdata;
float vccpauxdata;
float maxdata;
float mindata;
xadcps *xadcinstptr = &xadcinst;
printf( entering the xadc polledexample. );
/*
* initialize the xadc driver.
*/
configptr= xadcps_lookupconfig(xadcdeviceid);
if (configptr == null) {
return xst_failure;
}
xadcps_cfginitialize(xadcinstptr,configptr,
configptr->baseaddress);
/*
* self test the xadc/adc device
*/
status= xadcps_selftest(xadcinstptr);
if (status != xst_success) {
return xst_failure;
}
/*
* disable the channel sequencer beforeconfiguring the sequence
* registers.
*/
xadcps_setsequencermode(xadcinstptr,xadcps_seq_mode_safe);
/*
* read the on-chip temperature data(current/maximum/minimum)
* from the adc data registers.
*/
temprawdata= xadcps_getadcdata(xadcinstptr, xadcps_ch_temp);
tempdata= xadcps_rawtotemperature(temprawdata);
printf( the current temperature is%0d.%03d centigrades. ,
(int)(tempdata), xadcfractiontoint(tempdata));
temprawdata= xadcps_getminmaxmeasurement(xadcinstptr, xadcps_max_temp);
maxdata= xadcps_rawtotemperature(temprawdata);
printf(the maximum temperature is%0d.%03d centigrades. ,
(int)(maxdata), xadcfractiontoint(maxdata));
temprawdata= xadcps_getminmaxmeasurement(xadcinstptr, xadcps_min_temp);
mindata= xadcps_rawtotemperature(temprawdata & 0xfff0);
printf(the minimum temperature is%0d.%03d centigrades. ,
(int)(mindata), xadcfractiontoint(mindata));
/*
* read the vccpint votage data(current/maximum/minimum) from the
* adc data registers.
*/
vccpintrawdata= xadcps_getadcdata(xadcinstptr, xadcps_ch_vccpint);
vccpintdata= xadcps_rawtovoltage(vccpintrawdata);
printf( the current vccpint is%0d.%03d volts. ,
(int)(vccpintdata),xadcfractiontoint(vccpintdata));
vccpintrawdata= xadcps_getminmaxmeasurement(xadcinstptr,
xadcps_max_vccpint);
maxdata= xadcps_rawtovoltage(vccpintrawdata);
printf(the maximum vccpint is %0d.%03dvolts. ,
(int)(maxdata), xadcfractiontoint(maxdata));
vccpintrawdata= xadcps_getminmaxmeasurement(xadcinstptr,
xadcps_min_vccpint);
mindata= xadcps_rawtovoltage(vccpintrawdata);
printf(the minimum vccpint is %0d.%03dvolts. ,
(int)(mindata), xadcfractiontoint(mindata));
/*
* read the vccpaux votage data(current/maximum/minimum) from the
* adc data registers.
*/
vccpauxrawdata= xadcps_getadcdata(xadcinstptr, xadcps_ch_vccpaux);
vccpauxdata= xadcps_rawtovoltage(vccpauxrawdata);
printf( the current vccpaux is%0d.%03d volts. ,
(int)(vccpauxdata),xadcfractiontoint(vccpauxdata));
vccpauxrawdata= xadcps_getminmaxmeasurement(xadcinstptr,
xadcps_max_vccpaux);
maxdata= xadcps_rawtovoltage(vccpauxrawdata);
printf(the maximum vccpaux is %0d.%03dvolts. ,
(int)(maxdata), xadcfractiontoint(maxdata));
vccpauxrawdata= xadcps_getminmaxmeasurement(xadcinstptr,
xadcps_min_vccpaux);
mindata= xadcps_rawtovoltage(vccpauxrawdata);
printf(the minimum vccpaux is %0d.%03dvolts. ,
(int)(mindata), xadcfractiontoint(mindata));
/*
* read the vccpdro votage data(current/maximum/minimum) from the
* adc data registers.
*/
vccpdrorawdata= xadcps_getadcdata(xadcinstptr, xadcps_ch_vccpdro);
vccpintdata= xadcps_rawtovoltage(vccpdrorawdata);
printf( the current vccpddro is%0d.%03d volts. ,
(int)(vccpintdata), xadcfractiontoint(vccpintdata));
vccpdrorawdata= xadcps_getminmaxmeasurement(xadcinstptr,
xadcps_max_vccpdro);
maxdata= xadcps_rawtovoltage(vccpdrorawdata);
printf(the maximum vccpddro is %0d.%03dvolts. ,
(int)(maxdata), xadcfractiontoint(maxdata));
vccpdrorawdata= xadcps_getminmaxmeasurement(xadcinstptr,
xadcps_min_vccpdro);
mindata= xadcps_rawtovoltage(vccpdrorawdata);
printf(the minimum vccpddro is %0d.%03dvolts. ,
(int)(mindata), xadcfractiontoint(mindata));
printf(exiting the xadc polled example. );
return xst_success;
}
/****************************************************************************/
/**
*
* this function converts the fractionpart of the given floating point number
* (after the decimal point)to aninteger.
*
* @param floatnum is the floating point number.
*
* @return integer number to a precision of 3 digits.
*
* @note
* this function is used in the printingof floating point data to a stdio device
* using the xil_printf function. thexil_printf is a very small foot-print
* printf function and does notsupport the printing of floating point numbers.
*
*****************************************************************************/
int xadcfractiontoint(float floatnum)
{
float temp;
temp= floatnum;
if (floatnum < 0) {
temp= -(floatnum);
}
return( ((int)((temp -(float)((int)temp)) * (1000.0f))));
}
原文标题：zynq中ps端xadc
文章出处：【微信公众号：fpga之家】欢迎添加关注！文章转载请注明出处。
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int xadcpolledprintfexample(u16 xadcdeviceid)
{
int status;
xadcps_config *configptr;
u32 temprawdata;
u32 vccpintrawdata;
u32 vccpauxrawdata;
u32 vccpdrorawdata;
float tempdata;
float vccpintdata;
float vccpauxdata;
float maxdata;
float mindata;
xadcps *xadcinstptr = &xadcinst;
printf( entering the xadc polledexample. );
/*
* initialize the xadc driver.
*/
configptr= xadcps_lookupconfig(xadcdeviceid);
if (configptr == null) {
return xst_failure;
}
xadcps_cfginitialize(xadcinstptr,configptr,
configptr->baseaddress);
/*
* self test the xadc/adc device
*/
status= xadcps_selftest(xadcinstptr);
if (status != xst_success) {
return xst_failure;
}
/*
* disable the channel sequencer beforeconfiguring the sequence
* registers.
*/
xadcps_setsequencermode(xadcinstptr,xadcps_seq_mode_safe);
/*
* read the on-chip temperature data(current/maximum/minimum)
* from the adc data registers.
*/
temprawdata= xadcps_getadcdata(xadcinstptr, xadcps_ch_temp);
tempdata= xadcps_rawtotemperature(temprawdata);
printf( the current temperature is%0d.%03d centigrades. ,
(int)(tempdata), xadcfractiontoint(tempdata));
temprawdata= xadcps_getminmaxmeasurement(xadcinstptr, xadcps_max_temp);
maxdata= xadcps_rawtotemperature(temprawdata);
printf(the maximum temperature is%0d.%03d centigrades. ,
(int)(maxdata), xadcfractiontoint(maxdata));
temprawdata= xadcps_getminmaxmeasurement(xadcinstptr, xadcps_min_temp);
mindata= xadcps_rawtotemperature(temprawdata & 0xfff0);
printf(the minimum temperature is%0d.%03d centigrades. ,
(int)(mindata), xadcfractiontoint(mindata));
/*
* read the vccpint votage data(current/maximum/minimum) from the
* adc data registers.
*/
vccpintrawdata= xadcps_getadcdata(xadcinstptr, xadcps_ch_vccpint);
vccpintdata= xadcps_rawtovoltage(vccpintrawdata);
printf( the current vccpint is%0d.%03d volts. ,
(int)(vccpintdata),xadcfractiontoint(vccpintdata));
vccpintrawdata= xadcps_getminmaxmeasurement(xadcinstptr,
xadcps_max_vccpint);
maxdata= xadcps_rawtovoltage(vccpintrawdata);
printf(the maximum vccpint is %0d.%03dvolts. ,
(int)(maxdata), xadcfractiontoint(maxdata));
vccpintrawdata= xadcps_getminmaxmeasurement(xadcinstptr,
xadcps_min_vccpint);
mindata= xadcps_rawtovoltage(vccpintrawdata);
printf(the minimum vccpint is %0d.%03dvolts. ,
(int)(mindata), xadcfractiontoint(mindata));
/*
* read the vccpaux votage data(current/maximum/minimum) from the
* adc data registers.
*/
vccpauxrawdata= xadcps_getadcdata(xadcinstptr, xadcps_ch_vccpaux);
vccpauxdata= xadcps_rawtovoltage(vccpauxrawdata);
printf( the current vccpaux is%0d.%03d volts. ,
(int)(vccpauxdata),xadcfractiontoint(vccpauxdata));
vccpauxrawdata= xadcps_getminmaxmeasurement(xadcinstptr,
xadcps_max_vccpaux);
maxdata= xadcps_rawtovoltage(vccpauxrawdata);
printf(the maximum vccpaux is %0d.%03dvolts. ,
(int)(maxdata), xadcfractiontoint(maxdata));
vccpauxrawdata= xadcps_getminmaxmeasurement(xadcinstptr,
xadcps_min_vccpaux);
mindata= xadcps_rawtovoltage(vccpauxrawdata);
printf(the minimum vccpaux is %0d.%03dvolts. ,
(int)(mindata), xadcfractiontoint(mindata));
/*
* read the vccpdro votage data(current/maximum/minimum) from the
* adc data registers.
*/
vccpdrorawdata= xadcps_getadcdata(xadcinstptr, xadcps_ch_vccpdro);
vccpintdata= xadcps_rawtovoltage(vccpdrorawdata);
printf( the current vccpddro is%0d.%03d volts. ,
(int)(vccpintdata), xadcfractiontoint(vccpintdata));
vccpdrorawdata= xadcps_getminmaxmeasurement(xadcinstptr,
xadcps_max_vccpdro);
maxdata= xadcps_rawtovoltage(vccpdrorawdata);
printf(the maximum vccpddro is %0d.%03dvolts. ,
(int)(maxdata), xadcfractiontoint(maxdata));
vccpdrorawdata= xadcps_getminmaxmeasurement(xadcinstptr,
xadcps_min_vccpdro);
mindata= xadcps_rawtovoltage(vccpdrorawdata);
printf(the minimum vccpddro is %0d.%03dvolts. ,
(int)(mindata), xadcfractiontoint(mindata));
printf(exiting the xadc polled example. );
return xst_success;
}
/****************************************************************************/
/**
*
* this function converts the fractionpart of the given floating point number
* (after the decimal point)to aninteger.
*
* @param floatnum is the floating point number.
*
* @return integer number to a precision of 3 digits.
*
* @note
* this function is used in the printingof floating point data to a stdio device
* using the xil_printf function. thexil_printf is a very small foot-print
* printf function and does notsupport the printing of floating point numbers.
*
*****************************************************************************/
int xadcfractiontoint(float floatnum)
{
float temp;
temp= floatnum;
if (floatnum < 0) {
temp= -(floatnum);
}
return( ((int)((temp -(float)((int)temp)) * (1000.0f))));
}
原文标题：zynq中ps端xadc
文章出处：【微信公众号：fpga之家】欢迎添加关注！文章转载请注明出处。
混合动力系统代表动力总成系统电气化的第一步
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