DA module library for MCU Gear with LPC1114FN28. This library contains wiring setting function.
DAmoduleLPC1114.cpp
- Committer:
- Info
- Date:
- 2014-05-05
- Revision:
- 0:177e80bbbd3b
File content as of revision 0:177e80bbbd3b:
#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--- }