Nick Ryder
AD5384 DAC.
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AD5384
by 
wimbeaumont Project
Diff: AD5384.cpp
- Revision:
- 3:0d930c475e72
- Parent:
- 1:d2d6341d3e97
--- a/AD5384.cpp Sun Oct 05 17:10:03 2014 +0000
+++ b/AD5384.cpp Tue Oct 07 21:17:50 2014 +0000
@@ -59,182 +59,155 @@
-AD5384::AD5384(SWSPI *spiinterface ,DigitalOut* chipselect):getVersion( VERSION_AD5384_HDR,AD5384_SRC_VERSION, __TIME__, __DATE__) {
- vref=2.5;
- spi=spiinterface;
- cs=chipselect;
- for ( int nc=0 ; nc < nrch; nc++){
- gain[nc]=0x3FFE;
- offset[nc]=0x2000;
- }
- };
+AD5384::AD5384(SWSPI * spiinterface, DigitalOut * chipselect):
+ getVersion(VERSION_AD5384_HDR, AD5384_SRC_VERSION, __TIME__, __DATE__)
+{
+ vref = 2.5;
+ spi = spiinterface;
+ cs = chipselect;
+ for (int nc = 0; nc < nrch; nc++) {
+ gain[nc] = 0x3FFE;
+ offset[nc] = 0x2000;
+ }
+};
- u16 AD5384::calculate_dac_setting(u8 nr, float vout ) {
+u16 AD5384::calculate_dac_setting(u8 nr, float vout) {
//Vout = 2 * Vref * x2 / 2^n => x2 = Vout * 2^14 /(2 * Vref)
// x2 is loaded to the DAC string
// x1 is the 14 bit DAC wordt written to the DAC input register
- if( nr >39 ) return 0;
- float x2= vout * p2_14 /(2 *vref);
+ if (nr > 39) return 0;
+ float x2 = vout * p2_14 / (2 * vref);
// x2 = [(gain+2)/2^n * x1] + offset-2^13
// x1 = 2^14/(gain+2) * [ x2 - offset+2^13 ]
- u16 x1 = p2_14/(gain[nr]+1) *( x2- offset[nr]+p2_13);
- x1= 0x3FFF & x1;
- dac[nr]=x1 ;
- return x1;
- };
-
+ u16 x1 = p2_14 / (gain[nr] + 1) * (x2 - offset[nr] + p2_13);
+ x1 = 0x3FFF & x1;
+ dac[nr] = x1;
+ return x1;
+};
-u32 AD5384::format_word(u8 mode,u8 ch,u8 rw,u16 data) {
- // not clear what is the MSB bit ,set it to zero
- u32 shift = (u32) rw&1;
- u32 word= shift << 22;
-
- shift= (u32)(ch &0x1F);
- shift = shift << 16;
- word = word | shift;
-
- shift= (u32)(mode & 0x3);
- shift = shift << 14;
- word = word | shift;
-
- word = word | (data & 0x3FFF);
-
- return word;
+u32 AD5384::format_word(u8 mode, u8 ch, u8 rw, u16 data) {
+ // not clear what is the MSB bit ,set it to zero
+ u32 shift = (u32) rw & 1;
+ u32 word = shift << 22;
+ shift = (u32) (ch & 0x1F);
+ shift = shift << 16;
+ word = word | shift;
+ shift = (u32) (mode & 0x3);
+ shift = shift << 14;
+ word = word | shift;
+ word = word | (data & 0x3FFF);
+ return word;
}
-
-void AD5384::set_spi_mode(){
- spi->format(24,1);
+
+void AD5384::set_spi_mode() {
+ spi->format(24, 1);
spi->frequency(10000000);
}
- u16 AD5384::set_volt(u8 ch, float vout ){
- volt[ch]=vout;
- u16 dacin=calculate_dac_setting(ch, vout );
+ u16 AD5384::set_volt(u8 ch, float vout) {
+ volt[ch] = vout;
+ u16 dacin = calculate_dac_setting(ch, vout);
set_spi_mode();
- u32 data=format_word(M_DATA_R,ch,0,dacin);
+ u32 data = format_word(M_DATA_R, ch, 0, dacin);
cs->write(C_ACTIVE);
spi->write(data);
cs->write(C_DEACTIVE);
return dacin;
}
-void AD5384::init1(){
- u16 ctrlreg=0;
- ctrlreg = (INT_REF_2500 | REF_SRC_INT ) & TOGGLE_DISABLE;
- set_reg(M_SPEC_R,CTRL_REG_ADDR,ctrlreg);
-
+void AD5384::init1() {
+ u16 ctrlreg = 0;
+ ctrlreg = (INT_REF_2500 | REF_SRC_INT ) & TOGGLE_DISABLE;
+ set_reg(M_SPEC_R, CTRL_REG_ADDR, ctrlreg);
}
-void AD5384::init2(){
- u16 ctrlreg=0;
- // implecite INT_REF_1250
- ctrlreg = REF_SRC_INT & TOGGLE_DISABLE;
- set_reg(M_SPEC_R,CTRL_REG_ADDR,ctrlreg);
-
+void AD5384::init2() {
+ u16 ctrlreg = 0;
+ // implecite INT_REF_1250
+ ctrlreg = REF_SRC_INT & TOGGLE_DISABLE;
+ set_reg(M_SPEC_R, CTRL_REG_ADDR, ctrlreg);
}
-
-
-u32 AD5384::soft_clr(){
- return set_reg(M_SPEC_R,0x02,0x2000);
+u32 AD5384::soft_clr() {
+ return set_reg(M_SPEC_R, 0x02, 0x2000);
}
-
-u32 AD5384::soft_rst(){
- return set_reg(M_SPEC_R,0x0F,0x211F);
+u32 AD5384::soft_rst() {
+ return set_reg(M_SPEC_R, 0x0F, 0x211F);
}
-
-u32 AD5384::clear_code(){
- return set_reg(M_SPEC_R,0x01,0x2000);
- }
+u32 AD5384::clear_code() {
+ return set_reg(M_SPEC_R, 0x01, 0x2000);
+}
-u16 AD5384::set_gain(u8 ch, u16 gain ){
- set_reg(M_GAIN_R,ch,gain);
- return gain;
+u16 AD5384::set_gain(u8 ch, u16 gain) {
+ set_reg(M_GAIN_R, ch, gain);
+ return gain;
}
-u16 AD5384::set_offset(u8 ch, u16 gain ){
- set_reg(M_OFFS_R,ch,gain);
- return gain;
-}
-
-
-u16 AD5384::set_dac(u8 ch, u16 dac ){
- set_reg(M_DATA_R,ch,dac);
- return dac;
+u16 AD5384::set_offset(u8 ch, u16 gain){
+ set_reg(M_OFFS_R, ch, gain);
+ return gain;
}
+u16 AD5384::set_dac(u8 ch, u16 dac){
+ set_reg(M_DATA_R, ch, dac);
+ return dac;
+}
-
+u32 AD5384::set_reg(u8 mode, u8 ch, u16 value){
+ set_spi_mode();
+ value = value & 0x3FFF;
+ u32 data = format_word(mode, ch, 0, value);
+ cs->write(C_ACTIVE);
+ spi->write(data);
+ cs->write(C_DEACTIVE);
+ return data;
+}
- u32 AD5384::set_reg(u8 mode,u8 ch, u16 value ){
- set_spi_mode();
- value=value & 0x3FFF;
- u32 data=format_word(mode,ch,0,value);
- cs->write(C_ACTIVE);
- spi->write(data);
- cs->write(C_DEACTIVE);
- return data;
- }
-
- u16 AD5384::get_reg(u8 mode, u8 ch ){
- set_spi_mode();
- u32 data=format_word(mode,ch,1,0);
- cs->write(C_ACTIVE);
- spi->write(data);
- cs->write(C_DEACTIVE);
- wait( .00001);
- cs->write(C_ACTIVE);
- data=spi->write(NOP_INST);
- cs->write(C_DEACTIVE);
- return (u16) data;
+u16 AD5384::get_reg(u8 mode, u8 ch ){
+ set_spi_mode();
+ u32 data = format_word(mode, ch, 1, 0);
+ cs->write(C_ACTIVE);
+ spi->write(data);
+ cs->write(C_DEACTIVE);
+ wait(0.00001);
+ cs->write(C_ACTIVE);
+ data=spi->write(NOP_INST);
+ cs->write(C_DEACTIVE);
+ return (u16) data;
}
- u16 AD5384::get_gain(u8 ch ){
- return get_reg(M_GAIN_R,ch);
-
+u16 AD5384::get_gain(u8 ch) {
+ return get_reg(M_GAIN_R, ch);
}
-u16 AD5384::get_dac(u8 ch){
- return get_reg(M_DATA_R,ch);
-
+u16 AD5384::get_dac(u8 ch) {
+ return get_reg(M_DATA_R, ch);
}
-
-
-
-
- u16 AD5384::get_offset(u8 ch ){
- return get_reg(M_OFFS_R,ch);
-
+
+u16 AD5384::get_offset(u8 ch) {
+ return get_reg(M_OFFS_R, ch);
}
u32 AD5384::get_ctrl(){
-
return get_reg(M_SPEC_R, 0x0C);
}
-
-
-
u16 AD5384::get_ch_out_reg(u8 ch) {
- u32 data=format_word(M_DATA_R,ch,1,0);
- cs->write(C_ACTIVE);
- spi->write(data);
- cs->write(C_DEACTIVE);
- wait( .00001);
- cs->write(C_ACTIVE);
- data=spi->write(NOP_INST);
- cs->write(C_DEACTIVE);
- return (u16) data;
+ u32 data=format_word(M_DATA_R,ch,1,0);
+ cs->write(C_ACTIVE);
+ spi->write(data);
+ cs->write(C_DEACTIVE);
+ wait(0.00001);
+ cs->write(C_ACTIVE);
+ data = spi->write(NOP_INST);
+ cs->write(C_DEACTIVE);
+ return (u16) data;
}
-
-
-
-
-#include "sscm_comm.h"
+#include "sscm_comm.h" // Weird place for an include
/*
u16 AD5384::get_src_version_nr(){