LTC2418IGN datasheet(44/48 Pages) LINER

44 / 48 page

LTC2414/LTC2418

241418fa

////////// Bidirectional Shift Routine for ADC //////////

void shiftbidir(char nextch)

{

int i;

for(i=0;i<2;i++)

// send config bits 7:6,

// ignore EOC/ and DMY bits

{

sdi=nextch.7;

// put data on pin

nextch = rl(nextch);

// get next config bit ready

sck=1;

// clock high

sck=0;

// clock low

}

for(i=0;i<8;i++)

// send config, read byte 3

{

sdi=nextch.7;

// put data on pin

nextch = rl(nextch);

// get next config bit ready

result_3 = rl(result_3);// get ready to load lsb

result_3.0 = sdo;

// load lsb

sck=1;

// clock high

sck=0;

// clock low

}

for(i=0;i<8;i++)

// read byte 2

{

result_2 = rl(result_2);// get ready to load lsb

result_2.0 = sdo;

// load lsb

sck=1;

// clock high

sck=0;

// clock low

}

for(i=0;i<8;i++)

// read byte 1

{

result_1 = rl(result_1);// get ready to load lsb

result_1.0 = sdo;

// load lsb

sck=1;

// clock high

sck=0;

// clock low

}

result_0=0;

// ensure bits 7:6 are zero

for(i=0;i<6;i++)

// read byte 0

{

result_0 = rl(result_0);// get ready to load lsb

result_0.0 = sdo;

// load lsb

sck=1;

// clock high

sck=0;

// clock low

}

Figure 50. Sample Program in CC5X for PIC16F84 (cont)

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