Diff: adt7320.cpp

Revision:

0:e252ae2774e8

Child:

1:1b9f706b8abc

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/adt7320.cpp	Thu Oct 02 19:25:55 2014 +0000
@@ -0,0 +1,65 @@
+#include "adt7320.h"
+
+
+#define  CS_ACTIVE 1
+#define  CS_DEACTIVE 0
+
+adt7320::adt7320(SWSPI *spiinterface ,DigitalOut* chipselect ){
+    spi=spiinterface;
+    cs=chipselect;
+    }
+
+void adt7320::set_spi_mode(u8 nrbyte){
+    spi->format(nrbyte,1);
+    spi->frequency(10000000);             
+}
+
+
+u8   adt7320::format_cmd( u8 reg, bool rw){
+    u8  cmd=0; ;
+    reg= reg & 0x7;
+    cmd = reg << 3;
+    if ( rw)  cmd |= 0x40;  // write bit 6 
+    return cmd; 
+}    
+    
+
+
+u8   adt7320::getR08( u8 reg){
+    set_spi_mode(16);
+    u16 data=0x00FF;
+    u16 cmd = (u16) format_cmd(reg,true);
+    cmd = cmd <<8;
+    data= data | cmd;
+     cs->write(CS_ACTIVE);
+     data= spi->write(data);
+     cs->write(CS_DEACTIVE);
+     return (u8)(0x00FF &data);         
+    
+}
+
+u16   adt7320::getR16( u8 reg){
+    set_spi_mode(24);
+    u32 data=0x0000FFFF;
+    u32 cmd =(u32) format_cmd(reg,true);
+    cmd = cmd <<16;
+    data= data | cmd;
+     cs->write(CS_ACTIVE);
+     data= spi->write(data);
+     cs->write(CS_DEACTIVE);
+     return (u16)(0x0000FFFF &data);             
+}
+
+
+u8  adt7320::getId(){
+    return getR08(0x03);
+}
+
+u16 adt7320::get_TcritSP(){
+    return getR16(0x04);   
+}    
+
+u16 adt7320::get_T(){
+    return getR16(0x02);   
+}    
+