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Library to work with the LDC1000 from Texas Instruments
LDC1000
This library was written to interface to Texas Instruments' LDC1000 in order to perform inductance measurement. This libary needs a SPI peripheral on your mbed device to talk to the LDC1000.
Clock
The LDC1000 needs a high speed clock for its internal frequency counter. In order to provide this clock, the FastPWM library is used. This may change the behaviour of other PWM channels, please be aware of that, and read the FastPWM documentation to understand the implications.
Unsupported
Not supported (yet):
- Setting the RpMAX and RpMIN values
- Setting the interrupt pin functionality
Revision 12:312970050c8c, committed 2015-06-01
- Comitter:
- hamid567
- Date:
- Mon Jun 01 08:21:11 2015 +0000
- Parent:
- 11:0f53fbf73613
- Child:
- 13:e077728f89ac
- Child:
- 14:14a6f50840df
- Commit message:
- Working example
Changed in this revision
| LDC1000.cpp | Show annotated file Show diff for this revision Revisions of this file |
| LDC1000.h | Show annotated file Show diff for this revision Revisions of this file |
--- a/LDC1000.cpp Fri May 29 13:45:48 2015 +0000
+++ b/LDC1000.cpp Mon Jun 01 08:21:11 2015 +0000
@@ -41,7 +41,6 @@
buffer &= 0xE7; //clear amplitude bits
buffer |= (amplitude<<3) & 0x18;
writeSPI(&buffer,0x04);
-
}
void LDC1000::setWatchdog(float frequency)
@@ -78,12 +77,11 @@
};
-/* reads all 5 registers also after cable reconnect but het returns just one byte*/
uint32_t LDC1000::readRawCounts(void)
{
uint8_t val[5];
readSPI(val,0x21,5);
- unsigned int combinedbytes = (val[4]<<16)| (val[3]<<8) | val[2]; // combine the 3 bytes from registers 23, 24 and 25
+ uint32_t combinedbytes = (val[4]<<16)| (val[3]<<8) | val[2]; // combine the content of the 3 bytes from registers 23, 24 and 25
return combinedbytes;
}
@@ -124,5 +122,4 @@
float LDC1000::get_frequency() {return _frequency;};
float LDC1000::get_responsetime() {return _responsetime;};
float LDC1000::get_cap() {return cap;};
-// END ***********************************************************
-
+// END ***********************************************************
\ No newline at end of file
--- a/LDC1000.h Fri May 29 13:45:48 2015 +0000
+++ b/LDC1000.h Mon Jun 01 08:21:11 2015 +0000
@@ -32,9 +32,6 @@
typedef enum { LDC_MODE_STANDBY = 0, LDC_MODE_ACTIVE = 1} LDC_MODE;
-typedef enum { WAKE_UP = 1, COMPARATOR = 2 , ACTIVE = 4} LDC_INTB;
-
-
/**
* Class for the LDC1000.
* @author Victor Sluiter
@@ -53,7 +50,6 @@
* @param mode choose from LDC_MODE_ACTIVE or LDC_MODE STANDBY
**/
void mode(LDC_MODE mode){writeSPI((uint8_t *)(&mode), 0x0B);};
- void setINTB(LDC_INTB setINTB){writeSPI((uint8_t *)(&setINTB), 0x0A);};
/**
* @brief get the calculated inductance value
**/
LDC1000