Michael Wilkens / TCA9548

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TCA9548 Class Reference
Public Member Functions

TCA9548 Class Reference

TCA9548 control class. More...

#include <TCA9548.h>

Public Member Functions

 TCA9548 ()
 Initialize object with default i2c pins.
 TCA9548 (PinName i2c_sda, PinName i2c_scl)
 Initialize object with specific i2c pins.
bool init (uint8_t iCh)
 Boot up the mux and change to initial channel (defaults to 0)
void ch (uint8_t newCh)
 Changes the i2c channel.

Detailed Description

TCA9548 control class.

Example: 

 //Perform readings on two i2c devices with the same address
 #include "TCA9548.h"
 #include "mbed.h"
 #include "VL6180.h"

 TCA9548 i2cMux(SDA, SCL);
 VL6180 laser1(SDA, SCL); // on SD0 and SC0
 VL6180 laser2(SDA, SCL); // on SD1 and SC1
 Serial pc(USBTX, USBRX); //USB serial

 int main() {
   float reading;
   i2cMux.ch(CH0);
   reading = laser1.read();
   pc.printf("Laser 1: %f\n", reading);
   i2cMux.ch(CH1); //for two channels: i2cMux.ch(CH1 | CH5);
   pc.printf("Laser 2: %f\n", reading);
   reading = laser2.read();
       
   while(1) {
   }
 }

Definition at line 51 of file TCA9548.h.

Constructor & Destructor Documentation

TCA9548 (  )

Initialize object with default i2c pins.

Definition at line 3 of file TCA9548.cpp.

TCA9548 ( PinName  i2c_sda,
PinName  i2c_scl 
)

Initialize object with specific i2c pins.

Parameters:
i2c_sdaSDA pin
i2c_sclSCL pin

Definition at line 4 of file TCA9548.cpp.

Member Function Documentation

void ch ( uint8_t  newCh )

Changes the i2c channel.

Parameters:
newChNew channel for mux

Definition at line 27 of file TCA9548.cpp.

bool init ( uint8_t  iCh )

Boot up the mux and change to initial channel (defaults to 0)

Parameters:
iChInitial Channel
Returns:
1 if failed ` 0 if successful

Definition at line 12 of file TCA9548.cpp.

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