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I2CReset is not required as I2C driver does the recovery before init

pull/8109/head
deepikabhavnani 2018-09-12 16:37:32 -05:00
parent ccb08a3fa1
commit a30da7e61e
2 changed files with 2 additions and 32 deletions
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25
components/802.15.4_RF/atmel-rf-driver/source/at24mac.cpp
View File

@ -29,30 +29,9 @@
#define EUI64_LEN 8
#define EUI48_LEN 6
AT24Mac::I2CReset::I2CReset(PinName sda, PinName scl)
{
mbed::DigitalInOut pin_sda(sda, PIN_OUTPUT, PullUp, 1);
mbed::DigitalInOut pin_scl(scl, PIN_OUTPUT, PullUp, 0);
//generate 9 clocks for worst-case scenario
for (int i = 0; i < 10; ++i) {
pin_scl = 1;
wait_us(5);
pin_scl = 0;
wait_us(5);
}
//generate a STOP condition
pin_sda = 0;
wait_us(5);
pin_scl = 1;
wait_us(5);
pin_sda = 1;
wait_us(5);
}
using namespace mbed;
/*I2C needs to be reset before constructing the I2C object (in case I2C is stuck)
because they use the same pins, therefore i2c_reset has to be before _i2c
in the initializer list*/
AT24Mac::AT24Mac(PinName sda, PinName scl) : i2c_reset(sda, scl), _i2c(sda, scl)
AT24Mac::AT24Mac(PinName sda, PinName scl) : _i2c(sda , scl)
{
// Do nothing
}

9
components/802.15.4_RF/atmel-rf-driver/source/at24mac.h
View File

@ -59,15 +59,6 @@ public:
int read_eui48(void *buf);
private:
/*
* Dummy class to allow us to reset I2C before the I2C constructor is called in
* the initializer list of AT24Mac's constructor
*/
class I2CReset {
public:
I2CReset(PinName sda, PinName scl);
};
I2CReset i2c_reset;
mbed::I2C _i2c;
};