/**
* \brief Enable re200b pir sensor
*/
void re200b_motion_detect_enable(void)
{
acc_enable(ACC);
/* Enable compasion interrupt */
acc_enable_interrupt(ACC);
/* Enable ACC interrupt */
NVIC_EnableIRQ(ACC_IRQn);
}
/**
* \brief ACC example application entry point.
*
* \return Unused (ANSI-C compatibility).
*/
int main(void)
{
uint32_t uc_key;
int16_t s_volt = 0;
uint32_t ul_value = 0;
volatile uint32_t ul_status = 0x0;
int32_t l_volt_dac0 = 0;
/* Initialize the system */
sysclk_init();
board_init();
/* Initialize debug console */
configure_console();
/* Output example information */
puts(STRING_HEADER);
/* Initialize DACC */
/* Enable clock for DACC */
pmc_enable_periph_clk(ID_DACC);
/* Reset DACC registers */
dacc_reset(DACC);
/* External trigger mode disabled. DACC in free running mode. */
dacc_disable_trigger(DACC, DACC_CHANNEL_0);
/* Half word transfer mode */
dacc_set_transfer_mode(DACC, 0);
#if (SAM3S) || (SAM3XA)
/* Power save:
* sleep mode - 0 (disabled)
* fast wakeup - 0 (disabled)
*/
dacc_set_power_save(DACC, 0, 0);
#endif
/* Enable output channel DACC_CHANNEL */
dacc_enable_channel(DACC, DACC_CHANNEL_0);
/* Setup analog current */
dacc_set_analog_control(DACC, DACC_ANALOG_CONTROL);
/* Set DAC0 output at ADVREF/2. The DAC formula is:
*
* (5/6 * VOLT_REF) - (1/6 * VOLT_REF) volt - (1/6 * VOLT_REF)
* ----------------------------------- = --------------------------
* MAX_DIGITAL digit
*
* Here, digit = MAX_DIGITAL/2
*/
dacc_write_conversion_data(DACC, MAX_DIGITAL / 2, DACC_CHANNEL_0);
l_volt_dac0 = (MAX_DIGITAL / 2) * (2 * VOLT_REF / 3) / MAX_DIGITAL +
VOLT_REF / 6;
/* Enable clock for AFEC */
afec_enable(AFEC0);
struct afec_config afec_cfg;
afec_get_config_defaults(&afec_cfg);
/* Initialize AFEC */
afec_init(AFEC0, &afec_cfg);
struct afec_ch_config afec_ch_cfg;
afec_ch_get_config_defaults(&afec_ch_cfg);
afec_ch_cfg.gain = AFEC_GAINVALUE_0;
afec_ch_set_config(AFEC0, AFEC_CHANNEL_POTENTIOMETER, &afec_ch_cfg);
/*
* Because the internal ADC offset is 0x200, it should cancel it and shift
* down to 0.
*/
afec_channel_set_analog_offset(AFEC0, AFEC_CHANNEL_POTENTIOMETER, 0x200);
afec_set_trigger(AFEC0, AFEC_TRIG_SW);
/* Enable channel for potentiometer. */
afec_channel_enable(AFEC0, AFEC_CHANNEL_POTENTIOMETER);
/* Enable clock for ACC */
pmc_enable_periph_clk(ID_ACC);
/* Initialize ACC */
acc_init(ACC, ACC_MR_SELPLUS_AFE0_AD0, ACC_MR_SELMINUS_DAC0,
ACC_MR_EDGETYP_ANY, ACC_MR_INV_DIS);
/* Enable ACC interrupt */
NVIC_EnableIRQ(ACC_IRQn);
/* Enable */
acc_enable_interrupt(ACC);
dsplay_menu();
while (1) {
while (usart_read(CONSOLE_UART, &uc_key)) {
}
printf("input: %c\r\n", uc_key);
switch (uc_key) {
case 's':
case 'S':
printf("Input DAC0 output voltage (%d~%d mv): ",
(VOLT_REF / 6), (VOLT_REF * 5 / 6));
s_volt = get_input_voltage();
puts("\r");
if (s_volt > 0) {
l_volt_dac0 = s_volt;
/* The DAC formula is:
*
* (5/6 * VOLT_REF) - (1/6 * VOLT_REF) volt - (1/6 * VOLT_REF)
* ----------------------------------- = --------------------------
* MAX_DIGITAL digit
*
*/
ul_value = ((s_volt - (VOLT_REF / 6))
* (MAX_DIGITAL * 6) / 4) / VOLT_REF;
dacc_write_conversion_data(DACC, ul_value, DACC_CHANNEL_0);
puts("-I- Set ok\r");
} else {
puts("-I- Input voltage is invalid\r");
}
break;
case 'v':
case 'V':
/* Start conversion */
afec_start_software_conversion(AFEC0);
ul_status = afec_get_interrupt_status(AFEC0);
while ((ul_status & AFEC_ISR_EOC0) != AFEC_ISR_EOC0) {
ul_status = afec_get_interrupt_status(AFEC0);
}
/* Conversion is done */
ul_value = afec_channel_get_value(AFEC0, AFEC_CHANNEL_POTENTIOMETER);
/*
* Convert AFEC sample data to voltage value:
* voltage value = (sample data / max. resolution) * reference voltage
*/
s_volt = (ul_value * VOLT_REF) / MAX_DIGITAL;
printf("-I- Voltage on potentiometer(AD0) is %d mv\n\r", s_volt);
printf("-I- Voltage on DAC0 is %ld mv \n\r", (long)l_volt_dac0);
break;
case 'm':
case 'M':
dsplay_menu();
break;
}
}
}
/**
* \brief ACC example application entry point.
*
* \return Unused (ANSI-C compatibility).
*/
int main(void)
{
uint8_t uc_key;
int16_t s_volt = 0;
uint32_t ul_value = 0;
volatile uint32_t ul_status = 0x0;
int32_t l_volt_dac0 = 0;
/* Initialize the system */
sysclk_init();
board_init();
/* Initialize debug console */
configure_console();
/* Output example information */
puts(STRING_HEADER);
/* Initialize DACC */
/* Enable clock for DACC */
pmc_enable_periph_clk(ID_DACC);
/* Reset DACC registers */
dacc_reset(DACC);
/* External trigger mode disabled. DACC in free running mode. */
dacc_disable_trigger(DACC);
/* Half word transfer mode */
dacc_set_transfer_mode(DACC, 0);
/* Power save:
* sleep mode - 0 (disabled)
* fast wake-up - 0 (disabled)
*/
dacc_set_power_save(DACC, 0, 0);
/* Timing:
* refresh - 0x08 (1024*8 dacc clocks)
* max speed mode - 0 (disabled)
* startup time - 0xf (960 dacc clocks)
*/
dacc_set_timing(DACC, 0x08, 0, 0xf);
/* Disable TAG and select output channel DACC_CHANNEL */
dacc_set_channel_selection(DACC, DACC_CHANNEL_0);
/* Enable output channel DACC_CHANNEL */
dacc_enable_channel(DACC, DACC_CHANNEL_0);
/* Setup analog current */
dacc_set_analog_control(DACC, DACC_ANALOG_CONTROL);
/* Set DAC0 output at ADVREF/2. The DAC formula is:
*
* (5/6 * VOLT_REF) - (1/6 * VOLT_REF) volt - (1/6 * VOLT_REF)
* ----------------------------------- = --------------------------
* MAX_DIGITAL digit
*
* Here, digit = MAX_DIGITAL/2
*/
dacc_write_conversion_data(DACC, MAX_DIGITAL / 2);
l_volt_dac0 = (MAX_DIGITAL / 2) * (2 * VOLT_REF / 3) / MAX_DIGITAL +
VOLT_REF / 6;
/* Initialize ADC */
/* Enable clock for ADC */
pmc_enable_periph_clk(ID_ADC);
/*
* Formula: ADCClock = MCK / ( (PRESCAL+1) * 2 )
* For example, MCK = 64MHZ, PRESCAL = 4, then:
* ADCClock = 64 / ((4+1) * 2) = 6.4MHz;
*/
adc_init(ADC, sysclk_get_cpu_hz(), ADC_CLOCK, ADC_STARTUP_TIME_SETTING);
/* Formula:
* Startup Time = startup value / ADCClock
* Transfer Time = (TRANSFER * 2 + 3) / ADCClock
* Tracking Time = (TRACKTIM + 1) / ADCClock
* Settling Time = settling value / ADCClock
* For example, ADC clock = 6MHz (166.7 ns)
* Startup time = 512 / 6MHz = 85.3 us
* Transfer Time = (1 * 2 + 3) / 6MHz = 833.3 ns
* Tracking Time = (0 + 1) / 6MHz = 166.7 ns
* Settling Time = 3 / 6MHz = 500 ns
*/
/* Set ADC timing */
adc_configure_timing(ADC, ADC_TRACK_SETTING, ADC_SETTLING_TIME_3,
ADC_TRANSFER_SETTING);
/* Channel 5 has to be compared */
adc_enable_channel(ADC, ADC_CHANNEL_5);
//! [acc_enable_clock]
/** Enable clock for ACC */
pmc_enable_periph_clk(ID_ACC);
//! [acc_enable_clock]
//! [acc_init]
/** Initialize ACC */
acc_init(ACC, ACC_MR_SELPLUS_AD5, ACC_MR_SELMINUS_DAC0,
ACC_MR_EDGETYP_ANY, ACC_MR_INV_DIS);
//! [acc_init]
//! [acc_irq_enable]
/** Enable ACC interrupt */
NVIC_EnableIRQ(ACC_IRQn);
/** Enable */
acc_enable_interrupt(ACC);
//! [acc_irq_enable]
dsplay_menu();
while (1) {
while (uart_read(CONSOLE_UART, &uc_key)) {
}
printf("input: %c\r\n", uc_key);
switch (uc_key) {
case 's':
case 'S':
printf("Input DAC0 output voltage (%d~%d mv): ",
(VOLT_REF / 6), (VOLT_REF * 5 / 6));
s_volt = get_input_voltage();
puts("\r");
if (s_volt > 0) {
l_volt_dac0 = s_volt;
/* The DAC formula is:
*
* (5/6 * VOLT_REF) - (1/6 * VOLT_REF) volt - (1/6 * VOLT_REF)
* ----------------------------------- = --------------------------
* MAX_DIGITAL digit
*
*/
ul_value = ((s_volt - (VOLT_REF / 6))
* (MAX_DIGITAL * 6) / 4) / VOLT_REF;
dacc_write_conversion_data(DACC, ul_value);
puts("-I- Set ok\r");
} else {
puts("-I- Input voltage is invalid\r");
}
break;
case 'v':
case 'V':
/* Start conversion */
adc_start(ADC);
ul_status = adc_get_status(ADC);
while ((ul_status & ADC_ISR_EOC5) != ADC_ISR_EOC5) {
ul_status = adc_get_status(ADC);
}
/* Conversion is done */
ul_value = adc_get_channel_value(ADC, ADC_CHANNEL_5);
/*
* Convert ADC sample data to voltage value:
* voltage value = (sample data / max. resolution) * reference voltage
*/
s_volt = (ul_value * VOLT_REF) / MAX_DIGITAL;
printf("-I- Voltage on potentiometer(AD5) is %d mv\n\r", s_volt);
printf("-I- Voltage on DAC0 is %ld mv \n\r", (long)l_volt_dac0);
break;
case 'm':
case 'M':
dsplay_menu();
break;
}
}
}