Diff: LTC2944.cpp

Revision:

1:378dc5a174ce

Parent:

0:ec69fa9832e5

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/LTC2944.cpp	Wed May 17 18:45:40 2017 +0000
@@ -0,0 +1,113 @@
+// LTC2944 V1.0
+// 07/03/2017  GR :
+#include "LTC2944.h"
+//Serial pc(USBTX, USBRX);  // I/O terminal PC
+
+
+
+LTC2944::LTC2944(PinName sda, PinName scl) : i2c(sda,scl),pc(USBTX, USBRX)
+{
+    address=0xC8;   // adresse I2C
+    //i2c.frequency(400000);
+}
+void LTC2944::setRsense(float r)
+{
+    rsense=r;
+}
+//
+void LTC2944::setMode(unsigned char m)
+{
+    dataw[0]=0x01;  // registre B control
+    i2c.write(address,dataw,1,1);  // positionnement de l'adresse
+    i2c.read(address,datar,1);    // lecture du registre
+    pc.printf("valm1 %x \n",datar[0]);
+    dataw[1]=(datar[0]&~0xC0)|(m<<6);
+    i2c.write(address,dataw,2);  // ecriture
+    i2c.write(address,dataw,1,1);  // positionnement de l'adresse
+    i2c.read(address,datar,1);    // lecture du registre
+    pc.printf("valm2 %x \n",datar[0]);
+}
+//
+void LTC2944::setPrescaler(unsigned char p)
+{
+    dataw[0]=0x01;  // registre B control
+    i2c.write(address,dataw,1,1);  // positionnement de l'adresse
+    i2c.read(address,datar,1);    // lecture du registre
+    pc.printf("valp1 %x \n",datar[0]);
+    dataw[1]=(datar[0]&~0x38)|(p<<3);
+    i2c.write(address,dataw,2);  // ecriture
+    i2c.write(address,dataw,1,1);  // positionnement de l'adresse
+    i2c.read(address,datar,1);    // lecture du registre
+    pc.printf("valp2 %x \n",datar[0]);
+}
+//
+void LTC2944::setImin(float imin)
+{
+    dataw[0]=0x12;  // registre B control
+    i2c.write(address,dataw,1,1);  // positionnement de l'adresse
+    i2c.read(address,datar,2);    // lecture du registre
+    pc.printf("valImin1 %x %x \n",datar[0],datar[1]);
+    short val=(short)((imin*rsense*32767/64)+32767);
+    dataw[1]=(char)(val>>8);
+    dataw[2]=(char)(val&0x00FF);
+    i2c.write(address,dataw,3);  // ecriture
+    i2c.write(address,dataw,1,1);  // positionnement de l'adresse
+    i2c.read(address,datar,2);    // lecture du registre
+    pc.printf("valmin2 %x %x \n",datar[0],datar[1]);
+}
+
+void LTC2944::setImax(float imin)
+{
+    dataw[0]=0x10;  // registre B control
+    i2c.write(address,dataw,1,1);  // positionnement de l'adresse
+    i2c.read(address,datar,2);    // lecture du registre
+    pc.printf("valImax1 %x %x \n",datar[0],datar[1]);
+    short val=(short)((imin*rsense*32767/64)+32767);
+    dataw[1]=(char)(val>>8);
+    dataw[2]=(char)(val&0x00FF);
+    i2c.write(address,dataw,3);  // ecriture
+    i2c.write(address,dataw,1,1);  // positionnement de l'adresse
+    i2c.read(address,datar,2);    // lecture du registre
+    pc.printf("valmax2 %x %x \n",datar[0],datar[1]);
+}
+//
+float LTC2944::getVoltage(void)
+{
+    dataw[0]=8;  // adresse de la tension
+    i2c.write(address,dataw,1,1);  // positionnement de l'adresse
+    i2c.read(address,datar,2);    // lecture du registre de deux octets
+    return((((unsigned short)(datar[0])<<8)+datar[1])*70.8/0xFFFF);
+}
+
+float LTC2944::getCurrent(void)
+{
+    dataw[0]=0xE;  // adresse de la tension
+    i2c.write(address,dataw,1,1);  // positionnement de l'adresse
+    i2c.read(address,datar,2);    // lecture du registre de deux octets
+    unsigned short value=((unsigned short)(datar[0])<<8)|(unsigned short)datar[1];
+    return(((float)(value)-32767.0)*64./rsense/32767.0);
+}
+
+unsigned short LTC2944::getAccumulatedCharge(void)
+{
+    dataw[0]=0x2;  // adresse de la tension
+    i2c.write(address,dataw,1,1);  // positionnement de l'adresse
+    i2c.read(address,datar,2);    // lecture du registre de deux octets
+    return(((unsigned short)(datar[0])<<8)|(unsigned short)datar[1]);
+
+}
+unsigned char LTC2944::getStatus(void)
+{
+    dataw[0]=0x0;  // adresse status
+    i2c.write(address,dataw,1,1);  // positionnement de l'adresse
+    i2c.read(address,datar,1);    // lecture du registre de deux octets
+    return(datar[0]);
+
+}
+unsigned char LTC2944::alertResponse(void)
+{
+    i2c.read(0x18,datar,1);    // lecture du registre de deux octets
+
+
+    return( datar[0]);
+}
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