Diff: mcp3208.cpp

Revision:

1:7dde73ad2b78

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mcp3208.cpp	Sun Dec 15 02:42:47 2013 +0000
@@ -0,0 +1,116 @@
+#include "mbed.h"
+#include "mcp3208.h"
+
+using namespace mbed;
+
+mcp3208::mcp3208(SPI &spi, void(*sel)(void), void(*usel)(void)): _spi(spi) {    
+    selectfxn = sel;
+    unselectfxn = usel;         
+}
+
+mcp3208::~mcp3208() {
+}
+
+int mcp3208::read0(){
+    //printf("Read 0\r\n");
+    select();
+    _spi.write(USELECTADC0);
+    int upperbyte = _spi.write(LSELECTADC0);
+    int lowerbyte = _spi.write(0x00);
+    deselect();
+    int value = ((0x0F & upperbyte) << 8) | lowerbyte;
+    return value;
+}
+
+int mcp3208::read1(){
+    //printf("Read 1\r\n");
+    select();
+    _spi.write(USELECTADC1);
+    int upperbyte = _spi.write(LSELECTADC1);
+    int lowerbyte = _spi.write(0x00);
+    deselect();
+    int value = ((0x0F & upperbyte) << 8) | lowerbyte;
+    return value;
+}
+
+int mcp3208::read2(){
+    //printf("Read 2\r\n");
+    select();
+    _spi.write(USELECTADC2);
+    int upperbyte = _spi.write(LSELECTADC2);
+    int lowerbyte = _spi.write(0x00);
+    deselect();
+    int value = ((0x0F & upperbyte) << 8) | lowerbyte;
+    return value;
+}
+
+int mcp3208::read3(){
+    //printf("Read 3\r\n");
+    select();
+    _spi.write(USELECTADC3);
+    int upperbyte = _spi.write(LSELECTADC3);
+    int lowerbyte = _spi.write(0x00);
+    deselect();
+    int value = ((0x0F & upperbyte) << 8) | lowerbyte;
+    return value;
+}
+
+int mcp3208::read4(){
+    //printf("Read 4\r\n");
+    select();
+    _spi.write(USELECTADC4);
+    int upperbyte = _spi.write(LSELECTADC4);
+    int lowerbyte = _spi.write(0x00);
+    deselect();
+    int value = ((0x0F & upperbyte) << 8) | lowerbyte;
+    return value;
+}
+
+int mcp3208::read5(){
+    //printf("Read 5\r\n");
+    select();
+    _spi.write(USELECTADC5);
+    int upperbyte = _spi.write(LSELECTADC5);
+    int lowerbyte = _spi.write(0x00);
+    deselect();
+    int value = ((0x0F & upperbyte) << 8) | lowerbyte;
+    return value;
+}
+
+int mcp3208::read6(){
+    //printf("Read 6\r\n");
+    select();
+    _spi.write(USELECTADC6);
+    int upperbyte = _spi.write(LSELECTADC6);
+    int lowerbyte = _spi.write(0x00);
+    deselect();
+    int value = ((0x0F & upperbyte) << 8) | lowerbyte;
+    return value;
+}
+
+int mcp3208::read7(){
+    //printf("Read 7\r\n");
+    select();
+    _spi.write(USELECTADC7);
+    int upperbyte = _spi.write(LSELECTADC7);
+    int lowerbyte = _spi.write(0x00);
+    deselect();
+    int value = ((0x0F & upperbyte) << 8) | lowerbyte;
+    return value;
+}
+
+void mcp3208::configspi() {
+    _spi.format(8, 0);
+    //_spi.frequency();
+}
+
+void mcp3208::select() {
+    //Set CS low to start transmission (interrupts conversion)   
+    configspi(); 
+    selectfxn();
+}
+
+void mcp3208::deselect() {
+    //Set CS high to stop transmission (restarts conversion)    
+    unselectfxn();    
+}
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