void WriteByte(unsigned char value)
{
unsigned char Mask=1;
int loop;
for(loop=0;loop<8;loop++)
{
INP_GPIO(DS_PIN);
OUT_GPIO(DS_PIN);
GPIO_CLR= 1 <<DS_PIN;
if((value & Mask)!=0)
{
DELAY1US
INP_GPIO(DS_PIN);
DelayMicrosecondsNoSleep(60);
}
else
{
DelayMicrosecondsNoSleep(60);
INP_GPIO(DS_PIN);
DelayMicrosecondsNoSleep(1);
}
Mask*=2;
DelayMicrosecondsNoSleep(60);
}
usleep(100);
}
unsigned char ReadByte(void)
{
unsigned char Mask=1;
int loop;
unsigned char data=0;
int loop2;
for(loop=0;loop<8;loop++)
{
// set output
INP_GPIO(DS_PIN);
OUT_GPIO(DS_PIN);
// PIN LOW
GPIO_CLR= 1<<DS_PIN;
DELAY1US
// set input
INP_GPIO(DS_PIN);
// Wait 2 us
DelayMicrosecondsNoSleep(2);
if(GPIO_READ(DS_PIN)!=0)
data |= Mask;
Mask*=2;
DelayMicrosecondsNoSleep(60);
}
return data;
}
void QEncoder::clockPulse()
{
m_gpio.bitSet (m_bitClock);
DelayMicrosecondsNoSleep(5);
m_gpio.bitClear (m_bitClock);
DelayMicrosecondsNoSleep(5);
}
unsigned char ReadBit(void)
{
unsigned char rvalue=0;
INP_GPIO(DS_PIN);
OUT_GPIO(DS_PIN);
// PIN LOW
GPIO_CLR= 1 << DS_PIN;
DELAY1US
// set INPUT
INP_GPIO(DS_PIN);
DelayMicrosecondsNoSleep(2);
if(GPIO_READ(DS_PIN)!=0)
rvalue=1;
DelayMicrosecondsNoSleep(60);
return rvalue;
}
void WriteBit(unsigned char value)
{
INP_GPIO(DS_PIN);
OUT_GPIO(DS_PIN);
GPIO_CLR=1 <<DS_PIN;
if(value)
{
DELAY1US
INP_GPIO(DS_PIN);
DelayMicrosecondsNoSleep(60);
}
else
{
DelayMicrosecondsNoSleep(60);
INP_GPIO(DS_PIN);
DelayMicrosecondsNoSleep(1);
}
DelayMicrosecondsNoSleep(60);
}
int DoReset(void)
{
int loop;
INP_GPIO(DS_PIN);
DelayMicrosecondsNoSleep(10);
INP_GPIO(DS_PIN);
OUT_GPIO(DS_PIN);
// pin low for 480 us
GPIO_CLR=1<<DS_PIN;
usleep(480);
INP_GPIO(DS_PIN);
DelayMicrosecondsNoSleep(60);
if(GPIO_READ(DS_PIN)==0)
{
DelayMicrosecondsNoSleep(420);
return 1;
}
return 0;
}
/**
*On button push send trig signal
**/
void btnHandler(void)
{
//Debounce
long prevTime = btn_time.tv_nsec;
clock_gettime(CLOCK_MONOTONIC, &btn_time);
if ((btn_time.tv_nsec - prevTime) < DEBOUNCE) {
return;
}
//Send trigger pulse
printf("BTN pushed\n");
digitalWrite(TRIG, LOW);
digitalWrite(TRIG, HIGH);
DelayMicrosecondsNoSleep(20);
digitalWrite(TRIG, LOW);
}
