RAJESH M
PCF8591 I2C _ADC read library for LPC11U24
Dependents: mbed_PCF8591_LPC11U24_ADC_RAJESH_NIELIT_CALICUT
Revision 0:3c4cd2f477ea, committed 2016-06-15
- Comitter:
- rajeshnielit
- Date:
- Wed Jun 15 21:31:05 2016 +0000
- Commit message:
- PCF8591_ADC Read for LPC11U24 _ver01
Changed in this revision
| PCF8591.h | Show annotated file Show diff for this revision Revisions of this file |
| PCF8591_ADC.cpp | Show annotated file Show diff for this revision Revisions of this file |
diff -r 000000000000 -r 3c4cd2f477ea PCF8591.h
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/PCF8591.h Wed Jun 15 21:31:05 2016 +0000
@@ -0,0 +1,20 @@
+
+#include "mbed.h"
+#define PCF8591_ADDR 0x90
+#define ADC_CH00 0x00
+#define ADC_CH01 0x01
+#define ADC_CH02 0x02
+#define ADC_CH03 0x03
+
+class PCF8591 {
+public:
+
+ PCF8591(I2C *i2c);
+
+uint8_t ADC_read(uint8_t);
+
+protected:
+ I2C *_i2c; //I2C bus reference
+ uint8_t _slaveAddress; //I2C Slave address of device
+
+};
diff -r 000000000000 -r 3c4cd2f477ea PCF8591_ADC.cpp
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/PCF8591_ADC.cpp Wed Jun 15 21:31:05 2016 +0000
@@ -0,0 +1,27 @@
+
+ #include "mbed.h"
+#include "PCF8591.h"
+
+
+/** Create a PCF8591 AD and DA object using a specified I2C bus and slaveaddress
+ *
+ * @param I2C &i2c the I2C port to connect to
+ * @param char deviceAddress the address of the PCF8591
+ */
+PCF8591::PCF8591(I2C *i2c) : _i2c(i2c) {
+
+ _slaveAddress = PCF8591_ADDR;
+
+}
+
+
+uint8_t PCF8591::ADC_read(uint8_t channel) {
+
+char cmd;
+ char anaval;
+ cmd=channel;
+ _i2c->write( _slaveAddress, &cmd, 1 );
+ _i2c->read( _slaveAddress, &anaval, 1 );
+ return anaval;
+
+};