/*! \brief Enable an EIC interrupt line.
*
* This routine maps a GPIO pin and peripheral function to a specified EIC line.
*
* \param eic_line Line number to enable
* \param eic_pin GPIO module pin
* \param eic_func GPIO module function
* \param eic_irq IRQ of the interrupt handler
* \param eic_handler Interrupt handler to register
*/
static void eic_irq_connect(uint32_t eic_line, uint32_t eic_pin,
uint32_t eic_func, uint32_t eic_irq, __int_handler eic_handler)
{
eic_options_t const eic_options = {
.eic_line = eic_line,
.eic_mode = EIC_MODE_EDGE_TRIGGERED,
.eic_edge = EIC_EDGE_RISING_EDGE,
.eic_level = EIC_LEVEL_HIGH_LEVEL,
.eic_filter = EIC_FILTER_ENABLED,
.eic_async = EIC_ASYNCH_MODE
};
sysclk_enable_pba_module(SYSCLK_EIC);
gpio_enable_module_pin(eic_pin, eic_func);
irq_register_handler(eic_handler, eic_irq, 0);
eic_init(&AVR32_EIC, &eic_options, 1);
eic_enable_line(&AVR32_EIC, eic_line);
eic_enable_interrupt_line(&AVR32_EIC, eic_line);
}
static void prvSetupMACBInterrupt(volatile avr32_macb_t *macb)
{
#ifdef FREERTOS_USED
// Create the semaphore used to trigger the MACB task.
if (xSemaphore == NULL)
{
vSemaphoreCreateBinary( xSemaphore );
}
#else
// Init the variable counting the number of received frames not yet read.
DataToRead = 0;
#endif
#ifdef FREERTOS_USED
if( xSemaphore != NULL)
{
// We start by 'taking' the semaphore so the ISR can 'give' it when the
// first interrupt occurs.
xSemaphoreTake( xSemaphore, 0 );
#endif
// Setup the interrupt for MACB.
// Register the interrupt handler to the interrupt controller at interrupt level 2
INTC_register_interrupt((__int_handler)&vMACB_ISR, AVR32_MACB_IRQ, AVR32_INTC_INT2);
#if ETHERNET_CONF_USE_PHY_IT == 1
#if EXTPHY_MACB_USE_EXTINT
static const gpio_map_t EIC_GPIO_MAP =
{
{EXTPHY_MACB_INTERRUPT_PIN, EXTPHY_MACB_INTERRUPT_FUNCTION},
};
gpio_enable_module(EIC_GPIO_MAP, sizeof(EIC_GPIO_MAP) / sizeof(EIC_GPIO_MAP[0]));
// Enable GPIO pull ups for the interrupt pin.
gpio_enable_pin_pull_up(EXTPHY_MACB_INTERRUPT_PIN);
// Setup the interrupt for PHY.
// Register the interrupt handler to the interrupt controller at interrupt level 2
INTC_register_interrupt((__int_handler)&vPHY_ISR, EXTPHY_MACB_INTERRUPT_IRQ, AVR32_INTC_INT2);
// Enable edge-triggered interrupt.
eic_options.eic_mode = EIC_MODE_EDGE_TRIGGERED;
// Interrupt will trigger on falling edge (this is a must-do for the keypad scan
// feature if the chosen mode is edge-triggered).
eic_options.eic_edge = EIC_EDGE_FALLING_EDGE;
// Initialize in synchronous mode : interrupt is synchronized to the clock
eic_options.eic_async = EIC_SYNCH_MODE;
// Set the interrupt line number.
eic_options.eic_line = EXTPHY_MACB_INTERRUPT;
// Init the EIC controller with the options
eic_init(&AVR32_EIC, &eic_options, 1);
// Enable the EIC line.
eic_enable_line(&AVR32_EIC, EXTPHY_MACB_INTERRUPT);
// Enable the interrupt for the EIC line.
eic_enable_interrupt_line(&AVR32_EIC, EXTPHY_MACB_INTERRUPT);
#else
/* GPIO enable interrupt upon rising edge */
gpio_enable_pin_interrupt(EXTPHY_MACB_INTERRUPT_PIN, GPIO_FALLING_EDGE);
// Setup the interrupt for PHY.
// Register the interrupt handler to the interrupt controller at interrupt level 2
INTC_register_interrupt((__int_handler)&vPHY_ISR, (AVR32_GPIO_IRQ_0 + (EXTPHY_MACB_INTERRUPT_PIN/8)), AVR32_INTC_INT2);
#endif
/* enable interrupts on INT pin */
vWriteMDIO( macb, PHY_MICR , ( MICR_INTEN | MICR_INTOE ));
/* enable "link change" interrupt for Phy */
vWriteMDIO( macb, PHY_MISR , MISR_LINK_INT_EN );
#endif
// We want to interrupt on Rx and Tx events
macb->ier = AVR32_MACB_IER_RCOMP_MASK | AVR32_MACB_IER_TCOMP_MASK;
#ifdef FREERTOS_USED
}
#endif
}
///< Initializes ADC (configures Pins, starts Clock, sets defaults)
void ads1274_init_DAC(void)
{
function_generator = NULL;
///< set mode to "high resolution"
gpio_configure_pin(ADC_MODE0,GPIO_DIR_OUTPUT | GPIO_INIT_HIGH);
gpio_configure_pin(ADC_MODE1,GPIO_DIR_OUTPUT | GPIO_INIT_LOW);
///< set Format to Fixed-position TDM via SPI
gpio_configure_pin(ADC_FORMAT0,GPIO_DIR_OUTPUT | GPIO_INIT_HIGH);
gpio_configure_pin(ADC_FORMAT1,GPIO_DIR_OUTPUT | GPIO_INIT_LOW);
gpio_configure_pin(ADC_FORMAT2,GPIO_DIR_OUTPUT | GPIO_INIT_LOW);
///< configure the four channels
gpio_configure_pin(ADC_PWDN1,GPIO_DIR_OUTPUT | GPIO_INIT_HIGH);
gpio_configure_pin(ADC_PWDN2,GPIO_DIR_OUTPUT | GPIO_INIT_HIGH);
gpio_configure_pin(ADC_PWDN3,GPIO_DIR_OUTPUT | GPIO_INIT_HIGH);
gpio_configure_pin(ADC_PWDN4,GPIO_DIR_OUTPUT | GPIO_INIT_HIGH);
//gpio_configure_pin(AVR32_TC1_B0_0_0_PIN,GPIO_DIR_OUTPUT | GPIO_INIT_HIGH);
//gpio_configure_pin(AVR32_PIN_PC19, GPIO_DIR_OUTPUT| GPIO_INIT_HIGH);
ads1274_ADC_switch_clock(true);
//tc_init_waveform(tc, &waveform_opt); ///< Initialize the timer/counter .
///< Set the compare triggers.
//tc_write_rb(tc, EXAMPLE_TC_CHANNEL_ID, 0x1); ///< Set RA value.
//tc_write_rc(tc, EXAMPLE_TC_CHANNEL_ID, 0x2); ///< Set RC value.
///< Start the timer/counter.
//tc_start(tc, EXAMPLE_TC_CHANNEL_ID);
///< Enable edge-triggered interrupt.
eic_options[0].eic_mode = EIC_MODE_EDGE_TRIGGERED;
///< Interrupt will trigger on falling edge.
eic_options[0].eic_edge = EIC_EDGE_FALLING_EDGE;
///< Initialize in synchronous mode : interrupt is synchronized to the clock
eic_options[0].eic_async = EIC_SYNCH_MODE;
///< Set the interrupt line number.
eic_options[0].eic_line = EXT_NMI;
gpio_enable_module_pin(AVR32_EIC_EXTINT_0_1_PIN, AVR32_EIC_EXTINT_0_1_FUNCTION);
///<Disable_global_interrupt();
///< Initialize interrupt vectors.
eic_init(&AVR32_EIC, eic_options, 1);
///<INTC_init_interrupts();
///< initialize SPI0 interface
spi_buffered_init(&AVR32_SPI0, ADC_SPI_INDEX);
spi_buffered_init_DMA(0, 12);
spi_buffered_set_callback(ADC_SPI_INDEX, &process_data);
///< Register the EIC interrupt handlers to the interrupt controller.
//INTC_register_interrupt(&eic_int_handler1, AVR32_EIC_IRQ_1, AVR32_INTC_INT1);
///< Enable the chosen lines and their corresponding interrupt feature.
eic_enable_line(&AVR32_EIC, eic_options[0].eic_line);
eic_enable_interrupt_line(&AVR32_EIC, eic_options[0].eic_line);
///< Enable_global_interrupt();
eic_clear_interrupt_line(&AVR32_EIC, EXT_NMI);
///< activate sync and clkdiv
gpio_configure_pin(ADC_CLKDIV,GPIO_DIR_OUTPUT | GPIO_INIT_HIGH);
}
int main(void)
{
enum sleepmgr_mode current_sleep_mode = SLEEPMGR_ACTIVE;
uint32_t ast_counter = 0;
/*
* Initialize the synchronous clock system to the default configuration
* set in conf_clock.h.
* \note All non-essential peripheral clocks are initially disabled.
*/
sysclk_init();
/*
* Initialize the resources used by this example to the default
* configuration set in conf_board.h
*/
board_init();
/*
* Turn the activity status LED on to inform the user that the device
* is active.
*/
gpio_set_pin_low(LED_ACTIVITY_STATUS_PIN);
/*
* Configure pin change interrupt for asynchronous wake-up (required to
* wake up from the STATIC sleep mode) and enable the EIC clock.
*
* First, enable the clock for the EIC module.
*/
sysclk_enable_pba_module(SYSCLK_EIC);
/*
* Map the interrupt line to the GPIO pin with the right peripheral
* function.
*/
gpio_enable_module_pin(WAKE_BUTTON_EIC_PIN, WAKE_BUTTON_EIC_FUNCTION);
/*
* Enable the internal pull-up resistor on that pin (because the EIC is
* configured such that the interrupt will trigger on low-level, see
* eic_options.eic_level).
*/
gpio_enable_pin_pull_up(WAKE_BUTTON_EIC_PIN);
// Init the EIC controller with the options
eic_init(&AVR32_EIC, &eic_options, sizeof(eic_options) /
sizeof(eic_options_t));
// Enable External Interrupt Controller Line
eic_enable_line(&AVR32_EIC, WAKE_BUTTON_EIC_LINE);
// Enable the AST clock.
sysclk_enable_pba_module(SYSCLK_AST);
// Initialize the AST in Counter mode
ast_init_counter(&AVR32_AST, AST_OSC_RC, AST_PSEL_RC_1_76HZ,
ast_counter);
/*
* Configure the AST to wake up the CPU when the counter reaches the
* selected alarm0 value.
*/
AVR32_AST.WER.alarm0 = 1;
// Enable the AST
ast_enable(&AVR32_AST);
// Initialize the sleep manager, lock initial mode.
sleepmgr_init();
sleepmgr_lock_mode(current_sleep_mode);
while (1) {
ast_counter = ast_get_counter_value(&AVR32_AST);
// disable alarm 0
ast_disable_alarm0(&AVR32_AST);
// Set Alarm to current time + (6/1.76) seconds
ast_counter += 6;
ast_set_alarm0_value(&AVR32_AST, ast_counter);
// Enable alarm 0
ast_enable_alarm0(&AVR32_AST);
/*
* Turn the activity status LED off to inform the user that the
* device is in a sleep mode.
*/
gpio_set_pin_high(LED_ACTIVITY_STATUS_PIN);
/*
* Go to sleep in the deepest allowed sleep mode (i.e. no
* deeper than the currently locked sleep mode).
*/
sleepmgr_enter_sleep();
/*
* Turn the activity status LED on to inform the user that the
* device is active.
*/
gpio_set_pin_low(LED_ACTIVITY_STATUS_PIN);
// After wake up, clear the Alarm0
AVR32_AST.SCR.alarm0 = 1;
// Unlock the current sleep mode.
sleepmgr_unlock_mode(current_sleep_mode);
// Add a 3s delay
cpu_delay_ms(3000, sysclk_get_cpu_hz());
// Clear the External Interrupt Line (in case it was raised).
eic_clear_interrupt_line(&AVR32_EIC, WAKE_BUTTON_EIC_LINE);
// Lock the next sleep mode.
++current_sleep_mode;
if ((current_sleep_mode >= SLEEPMGR_NR_OF_MODES)
#if UC3L && (BOARD == UC3L_EK)
/* Note concerning the SHUTDOWN sleep mode: the shutdown sleep
* mode can only be used when the UC3L supply mode is the 3.3V
* Supply Mode with 1.8V Regulated I/O Lines. That is not how
* the UC3L is powered on the ATUC3L-EK so the SHUTDOWN mode
* cannot be used on this board. Thus we skip this sleep mode
* in this example for this board.
*/
|| (current_sleep_mode == SLEEPMGR_SHUTDOWN)
#endif
) {
current_sleep_mode = SLEEPMGR_ACTIVE;
}
sleepmgr_lock_mode(current_sleep_mode);
}
}
/*
* \brief main function : do init and loop to wake up CPU through EIC controller
*/
int main(void)
{
// Structure holding the configuration parameters
// of the EIC module.
eic_options_t eic_options;
// Activate LED0 pin in GPIO output mode and switch LED0 off.
gpio_set_gpio_pin(LED0_GPIO);
// Enable level-triggered interrupt.
eic_options.eic_mode = EIC_MODE_LEVEL_TRIGGERED;
// Interrupt will trigger on low-level.
eic_options.eic_level = EIC_LEVEL_LOW_LEVEL;
// Enable filter.
eic_options.eic_filter = EIC_FILTER_ENABLED;
// For Wake Up mode, initialize in asynchronous mode
eic_options.eic_async = EIC_ASYNCH_MODE;
// Choose External Interrupt Controller Line
eic_options.eic_line = EXT_INT_EXAMPLE_LINE;
// Map the interrupt line to the GPIO pin with the right peripheral function.
gpio_enable_module_pin(EXT_INT_EXAMPLE_PIN_LINE, EXT_INT_EXAMPLE_FUNCTION_LINE);
/*
* Enable the internal pull-up resistor on that pin (because the EIC is
* configured such that the interrupt will trigger on low-level, see
* eic_options.eic_level).
*/
gpio_enable_pin_pull_up(EXT_INT_EXAMPLE_PIN_LINE);
// Init the EIC controller with the options
eic_init(&AVR32_EIC, &eic_options,1);
// Enable External Interrupt Controller Line
eic_enable_line(&AVR32_EIC, EXT_INT_EXAMPLE_LINE);
/*
* Switch the CPU to static sleep mode.
* When the CPU is idle, it is possible to switch off the CPU clock and optionally other
* clock domains to save power. This is activated by the sleep instruction, which takes the sleep
* mode index number as argument. SLEEP function is defined in \DRIVERS\PM\pm.h.
* In static mode, all oscillators, including 32KHz and RC oscillator are stopped.
* Bandgap voltage reference BOD detector is turned off.
*/
SLEEP(AVR32_PM_SMODE_STATIC);
/*
* Cpu now is in static sleep mode. When the wake-up external interrupt occurs,
* the CPU resumes execution here and enter the while(1) loop.
*/
while (true)
{
// Toggle LED0 for a short while
toggle_led();
// Interrupt Line must be cleared to enable next SLEEP action
eic_clear_interrupt_line(&AVR32_EIC, EXT_INT_EXAMPLE_LINE);
// re-enter sleep mode.
SLEEP(AVR32_PM_SMODE_STATIC);
/*
* Cpu now is in static sleep mode. When the wake-up external interrupt occurs,
* the CPU resumes execution back from the top of the while loop.
*/
}
}