/******************************************************************************
* This function simulatenously reads ROT-A and ROT-B contacts of the rotary
* encoder and returns the relationship between their phase.
*
* @param psDev is a pointer to the PmodEnc structure.
*
* @return Phase value.
*****************************************************************************/
unsigned char encPhase(const PmodEnc_t* psDev)
{
unsigned char a = readGpio(psDev->RotA);
unsigned char b = readGpio(psDev->RotB);
a = (a == 0) ? 1 : 0;
b = (b == 0) ? 1 : 0;
return (b << 1) | a;
}
/*
* Read GPIO serial value
*/
float getSerialData(int num_registers, char* result_string, float rule_height) {
unsigned short int idx = 0, value_read = 0, pins_out_water = 0;
float pins_mid_level = 0;
clockUp();
loadRegisters();
//FIXME: Essa não é a forma correta de dar delay, muito ineficiente
__delay_cycles( SLEEP_TIME);
clockDown();
unloadRegisters();
for (idx = 0; idx < num_registers; idx++) {
//FIXME: Essa não é a forma correta de dar delay, muito ineficiente
__delay_cycles( SLEEP_TIME);
value_read = readGpio();
pins_out_water += value_read;
if (value_read)
strcat(result_string, "1");
else
strcat(result_string, "0");
clockUp();
//FIXME: Essa não é a forma correta de dar delay, muito ineficiente
__delay_cycles( SLEEP_TIME);
clockDown();
}
pins_mid_level = (MID_LEVEL / RULE_SPACE_PIN);
rule_height = ((num_registers - pins_out_water - pins_mid_level)
* RULE_SPACE_PIN);
return pins_mid_level;
}
JNIEXPORT jint JNICALL asusec_DockEmbeddedController_nativeReadECWakeUp
(JNIEnv *env, jclass cls) {
const int SIZE = 16;
char buf[SIZE];
int count = readGpio(ASUSEC_SYSFS_EC_WAKEUP, buf, SIZE);
int ret = -1;
if (count > 0) {
ret = atoi(buf);
}
return (jint)ret;
}
/******************************************************************************
* This function implements the state machine that reads the rotary encoder and
* returns its value;
*
* @param psDev is a pointer to the PmodEnc structure.
* @param psStatus is a pointer to the status structure of the encoder.
*
* @return Rotary encoder direction value.
*****************************************************************************/
void encMonitor(const PmodEnc_t* psDev, PmodEncStatus_t* psStatus)
{
static int state = DETENT;
static int last = -1;
unsigned int value = encPhase(psDev);
unsigned char centerLast = 0;
unsigned char centerNow = readGpio(psDev->Center);
// Detect a possible rising edge of the center button press
if (centerNow != centerLast)
{
if (centerNow)
{
psStatus->CenterValueChanged = 1;
}
centerLast = centerNow;
}
if (value != last)
{
switch (state)
{
case DETENT:
if(value == 2)
{
state = CW_1;
}
else if(value == 1)
{
state = CCW_1;
}
break;
case CW_1:
if(value == 0)
{
state = DETENT;
}
else if(value == 3)
{
state = CW_2;
}
break;
case CW_2:
if(value == 2)
{
state = CW_1;
}
else if(value == 1)
{
state = CW_3;
}
break;
case CW_3:
if(value == 1)
{
state = CW_2;
}
else if(value == 0)
{
state = DETENT;
psStatus->CntValue++;
psStatus->RotValueChanged = 1;
//printf("+");
}
break;
case CCW_1:
if(value == 0)
{
state = DETENT;
}
else if(value == 3)
{
state = CCW_2;
}
break;
case CCW_2:
if(value == 1)
{
state = CCW_1;
}
else if(value == 2)
{
state = CCW_3;
}
break;
case CCW_3:
if(value == 3)
{
state = CCW_2;
}
else if(value == 0)
{
state = DETENT;
psStatus->CntValue--;
psStatus->RotValueChanged = 1;
//printf("-");
}
}
last = value;
}
}