void digitalWrite( uint8_t pin, uint8_t val )
{
if (pin >= NUM_DIGITAL_PINS) return;
PinDescription *p = &g_APinDescription[pin];
if (!p->ulInputMode) {
if (p->ulGPIOType == SS_GPIO) {
uint32_t reg = p->ulGPIOBase + SS_GPIO_SWPORTA_DR;
if (val)
SET_ARC_BIT(reg, p->ulGPIOId);
else
CLEAR_ARC_BIT(reg, p->ulGPIOId);
}
else if (p->ulGPIOType == SOC_GPIO) {
uint32_t reg = p->ulGPIOBase + SOC_GPIO_SWPORTA_DR;
if (val)
SET_MMIO_BIT(reg, p->ulGPIOId);
else
CLEAR_MMIO_BIT(reg, p->ulGPIOId);
}
} else {
if (val)
SET_PIN_PULLUP(p->ulSocPin,1);
else
SET_PIN_PULLUP(p->ulSocPin,0);
}
}
void pinMode( uint8_t pin, uint8_t mode )
{
if (pin >= NUM_DIGITAL_PINS) return;
PinDescription *p = &g_APinDescription[pin];
if (mode == OUTPUT) {
p->ulInputMode = OUTPUT_MODE;
if (p->ulGPIOType == SS_GPIO) {
uint32_t reg = p->ulGPIOBase + SS_GPIO_SWPORTA_DDR;
SET_ARC_BIT(reg, p->ulGPIOId);
}
else if (p->ulGPIOType == SOC_GPIO) {
uint32_t reg = p->ulGPIOBase + SOC_GPIO_SWPORTA_DDR;
SET_MMIO_BIT(reg, p->ulGPIOId);
}
} else {
p->ulInputMode = INPUT_MODE;
if (p->ulGPIOType == SS_GPIO) {
uint32_t reg = p->ulGPIOBase + SS_GPIO_SWPORTA_DDR;
CLEAR_ARC_BIT(reg, p->ulGPIOId);
}
else if (p->ulGPIOType == SOC_GPIO) {
uint32_t reg = p->ulGPIOBase + SOC_GPIO_SWPORTA_DDR;
CLEAR_MMIO_BIT(reg, p->ulGPIOId);
}
}
/* Set SoC pin mux configuration */
SET_PIN_PULLUP(p->ulSocPin, (mode == INPUT_PULLUP) ? 1 : 0);
if (p->ulPinMode != GPIO_MUX_MODE) {
SET_PIN_MODE(p->ulSocPin, GPIO_MUX_MODE);
p->ulPinMode = GPIO_MUX_MODE;
}
}
uint32_t analogRead(uint32_t pin)
{
uint32_t val = 0;
/* allow for channel or pin numbers */
if (pin < 6) pin += A0;
PinDescription *p = &g_APinDescription[pin];
/* Disable pull-up and set pin mux for ADC output */
SET_PIN_MODE(p->ulSocPin, ADC_MUX_MODE);
SET_PIN_PULLUP(p->ulSocPin,0);
/* Reset sequence pointer */
SET_ARC_MASK(ADC_CTRL, ADC_SEQ_PTR_RST);
/* Update sequence table */
WRITE_ARC_REG(p->ulAdcChan, ADC_SEQ);
/* Reset sequence pointer & start sequencer */
SET_ARC_MASK(ADC_CTRL, ADC_SEQ_PTR_RST | ADC_SEQ_START | ADC_ENABLE);
/* Poll for ADC data ready status (DATA_A) */
while((READ_ARC_REG(ADC_INTSTAT) & ADC_INT_DATA_A) == 0);
/* Pop the data sample from FIFO to sample register */
SET_ARC_MASK(ADC_SET, ADC_POP_SAMPLE);
/* Read sample from sample register */
val = READ_ARC_REG( ADC_SAMPLE);
/* Clear the DATA_A status bit */
SET_ARC_MASK( ADC_CTRL, ADC_CLR_DATA_A);
return mapResolution(val, ADC_RESOLUTION, _readResolution);
}
void analogWrite(uint8_t pin, uint32_t val)
{
if (! digitalPinHasPWM(pin))
{
if(val > 127)
{
digitalWrite(pin, HIGH);
}
else
{
digitalWrite(pin, LOW);
}
return;
}
if (val <= 0) {
/* Use GPIO for 0% duty cycle (always off) */
pinMode(pin, OUTPUT);
digitalWrite(pin, LOW);
} else if (val >= ((1 << _writeResolution) - 1)) {
/* Use GPIO for 100% duty cycle (always on) */
pinMode(pin, OUTPUT);
digitalWrite(pin, HIGH);
} else {
/* PWM for everything in between */
PinDescription *p = &g_APinDescription[pin];
uint32_t offset;
uint32_t hcnt = (val/(float)maxResolutionValue) * pwmPeriod[p->ulPwmChan];
uint32_t lcnt = pwmPeriod[p->ulPwmChan] - hcnt;
/* Set the high count period (duty cycle) */
offset = ((p->ulPwmChan * QRK_PWM_N_LCNT2_LEN) + QRK_PWM_N_LOAD_COUNT2);
MMIO_REG_VAL(QRK_PWM_BASE_ADDR + offset) = hcnt;
/* Set the low count period (duty cycle) */
offset = ((p->ulPwmChan * QRK_PWM_N_REGS_LEN) + QRK_PWM_N_LOAD_COUNT1);
MMIO_REG_VAL(QRK_PWM_BASE_ADDR + offset) = lcnt;
/* start the PWM output */
offset = ((p->ulPwmChan * QRK_PWM_N_REGS_LEN) + QRK_PWM_N_CONTROL);
SET_MMIO_MASK(QRK_PWM_BASE_ADDR + offset, QRK_PWM_CONTROL_ENABLE);
if(pinmuxMode[pin] != PWM_MUX_MODE)
{
/* Disable pull-up and set pin mux for PWM output */
SET_PIN_PULLUP(p->ulSocPin, 0);
SET_PIN_MODE(p->ulSocPin, PWM_MUX_MODE);
pinmuxMode[pin] = PWM_MUX_MODE;
}
}
}
