Revision 0:177e80bbbd3b, committed 2014-05-05

Comitter:

Info

Date:

Mon May 05 10:40:11 2014 +0000

Commit message:

DA module library for MCU Gear with LPC1114FN28 mbed.; This library contain wiring setting for DA module.

Changed in this revision

diff -r 000000000000 -r 177e80bbbd3b DAmoduleLPC1114.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/DAmoduleLPC1114.cpp	Mon May 05 10:40:11 2014 +0000
@@ -0,0 +1,74 @@
+
+#include "mbed.h"
+#include "MCUGearALPC1114.h"
+#include "MCUGearBaseALPC1114.h"
+#include "DAmoduleLPC1114.h"
+
+DAmodule::DAmodule(SPI _spi, PinName _cs, PinName _dout1, MCUGear *mcugear)
+    :spi(_spi),cs(_cs), dout1(_dout1) {
+        
+    //Dout,mosi,sck,cs
+    mcugear->setWireA(IOout1, IO_REG_OUT_DIR, 0);
+    mcugear->setWireA(IOMOSI, IO_REG_OUT_DIR, 1);
+    mcugear->setWireA(IOSCK, IO_REG_OUT_DIR,2);
+    mcugear->setWireA(IOCS, IO_REG_OUT_DIR,3);
+}
+
+
+void DAmodule::initDA(MCUGear *mcugear){
+    
+       cs = 1;
+       dout1=1;    //reset ratch signal
+       
+       //12bit SPI DA module----------------
+       spi.frequency(20000000); //10MHz
+}
+
+void DAmodule::writeDAm(MCUGear *mcugear, int data){
+
+       //12bit SPI DA module----------------
+       //DA signl uses the data of AD 0ch. 
+       //cs = 1;
+       //dout1=1;    //reset ratch signal
+       
+       //12bit SPI DA module----------------
+       //spi.frequency(20000000); //10MHz
+       //connection
+       //mcugear->connectModuleA();   //connect---
+       cs = 0;
+       spi.write((0x30)+((data>>8)&0x0F));//write 0011 0000
+       spi.write(data&0xFF);//write 0011 1000 0000 0000
+
+       wait_us(1);  //over 15nsec
+       cs = 1;      //CS high
+       wait_us(1);  //over 40nsec
+       dout1=0;      //ratch for DA out enable
+       wait_us(1);  //over 100nsec
+       dout1=1;      //reset ratch signal
+       //mcugear->disconnectModule();   //disconnect---
+       //wait_us(1);  //wait after disconnect
+}
+
+void DAmodule::writeDAa(MCUGear *mcugear, int data){
+
+       //12bit SPI DA module----------------
+       //DA signl uses the data of AD 0ch. 
+       cs = 1;
+       dout1=1;    //reset ratch signal
+       
+       //12bit SPI DA module----------------
+       spi.frequency(20000000); //10MHz
+       //connection
+       mcugear->connectModuleA();   //connect---
+       cs = 0;
+       spi.write((0x30)+((data>>8)&0x0F));//write 0011 0000
+       spi.write(data&0xFF);//write 0011 1000 0000 0000
+
+       wait_us(1);  //over 15nsec
+       cs = 1;      //CS high
+       wait_us(1);  //over 40nsec
+       dout1=0;      //ratch for DA out enable
+       wait_us(1);  //over 100nsec
+       dout1=1;      //reset ratch signal
+       mcugear->disconnectModule();   //disconnect---
+}

diff -r 000000000000 -r 177e80bbbd3b DAmoduleLPC1114.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/DAmoduleLPC1114.h	Mon May 05 10:40:11 2014 +0000
@@ -0,0 +1,16 @@
+
+#include "commonALPC1114.h"
+
+class DAmodule
+{   
+    public:
+        DAmodule(SPI _spi, PinName _cs, PinName _dout1, MCUGear *mcugear);
+        void IODAmodule(MCUGear *mcugear);
+        void writeDAm(MCUGear *mcugear, int data);//manual connection
+        void writeDAa(MCUGear *mcugear, int data);//automatic connection
+        void initDA(MCUGear *mcugear);
+    protected:
+        SPI spi;
+        DigitalOut cs;
+        DigitalOut dout1;
+};
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