/*! \brief Noise Task:
* - Add random noise to buffer input signal
*/
void noise_task(void)
{
static uint32_t noise_value = NOISE_STARTUP_VALUE;
int32_t i;
if (gpio_get_pin_value(GPIO_PUSH_BUTTON_0) == GPIO_PUSH_BUTTON_0_PRESSED) {
if (noise_value < NOISE_MAX_VALUE - NOISE_STEP)
noise_value = noise_value + NOISE_STEP;
}
if (gpio_get_pin_value(GPIO_PUSH_BUTTON_1) == GPIO_PUSH_BUTTON_1_PRESSED) {
if (noise_value > NOISE_MIN_VALUE + NOISE_STEP)
noise_value = noise_value - NOISE_STEP;
}
for (i=0;i<GUI_BUFFER_LENGTH;i++) {
// Generate a Random noise reading the potentiometer Value
signal_noise_remote[i] = (rand()%(noise_value));
// Rescale the value on a 16-bits fixed point format
signal_noise_gui[i] =
GUI_SCALE_GAIN_VALUE*((int32_t)signal_noise_remote[i]) -
GUI_SCALE_OFFSET_VALUE;
// Add noise to the sine wave signal
signalin_noise_remote[i] = signalin_remote[i] +
signal_noise_remote[i];
// Rescale the value on a 16-bits fixed point format
signalin_noise_gui[i] = GUI_SCALE_GAIN_VALUE *
((int32_t)signalin_noise_remote[i]) - GUI_SCALE_OFFSET_VALUE;
}
}
static void irq_port1_line1(void) {
// print_dbg("\r\ninterrupt on PB08-PB15.");
// static event_t e;
// e.type = kSwitchEvents[swIdx];
// e.data = gpio_get_pin_value(kSwitchPins[swIdx]);
// event_post(&e);
// clock norm
if(gpio_get_pin_interrupt_flag(B09)) {
static event_t e;
e.type = kEventClockNormal;
e.data = !gpio_get_pin_value(B09);
event_post(&e);
gpio_clear_pin_interrupt_flag(B09);
}
// clock in
if(gpio_get_pin_interrupt_flag(B08)) {
// CLOCK BOUNCY WITHOUT THESE PRINTS
// print_dbg("\rclk: ");
// print_dbg_ulong(gpio_get_pin_value(B08));
// (*clock_pulse)(gpio_get_pin_value(B08));
static event_t e;
e.type = kEventClockExt;
e.data = gpio_get_pin_value(B08);
event_post(&e);
gpio_clear_pin_interrupt_flag(B08);
}
}
static void irq_port1_line1(void) {
// print_dbg("\r\ninterrupt on PB08-PB15.");
// clock norm
// if(gpio_get_pin_interrupt_flag(B10)) {
// static event_t e;
// e.type = kEventTrNormal;
// e.data = !gpio_get_pin_value(B10);
// event_post(&e);
// gpio_clear_pin_interrupt_flag(B10);
// }
// clock in
if(gpio_get_pin_interrupt_flag(B08)) {
static event_t e;
e.type = kEventTr;
e.data = gpio_get_pin_value(B08);
event_post(&e);
gpio_clear_pin_interrupt_flag(B08);
}
// tr in
if(gpio_get_pin_interrupt_flag(B09)) {
static event_t e;
e.type = kEventTr;
e.data = gpio_get_pin_value(B09) + 2;
event_post(&e);
gpio_clear_pin_interrupt_flag(B09);
}
}
/** \brief Test if a touch is detected.
*
* Checks if one of the Y lines is pulled low due to a touch on the surface.
* The Y lines must be pulled up and the X lines must be GND in order to work.
*
* \return \c true if a touch is detected and \c false if no touch is detected.
*/
static bool inline rtouch_is_detect(void)
{
/* Check if one of the Y lines is pulled low */
if (!gpio_get_pin_value(rtouch_gpio_ymap[0].pin) ||
!gpio_get_pin_value(rtouch_gpio_ymap[1].pin)) {
return true;
} else {
return false;
}
}
void gnms_button_init() {
gpio_enable_pin_glitch_filter(PROJECTOR_LEFT);
gpio_enable_pin_glitch_filter(PROJECTOR_RIGHT);
gpio_enable_pin_glitch_filter(PROJECTOR_UP);
gpio_enable_pin_glitch_filter(PROJECTOR_DOWN);
gpio_enable_pin_glitch_filter(PROJECTOR_MENU);
gpio_enable_pin_glitch_filter(PROJECTOR_EXIT);
gpio_enable_pin_glitch_filter(PROJECTOR_ENTER);
gpio_enable_pin_glitch_filter(VOLUME_UP);
gpio_enable_pin_glitch_filter(VOLUME_DN);
prev_proj_left = gpio_get_pin_value(PROJECTOR_LEFT);
prev_proj_right = gpio_get_pin_value(PROJECTOR_RIGHT);
prev_proj_up = gpio_get_pin_value(PROJECTOR_UP);
prev_proj_down = gpio_get_pin_value(PROJECTOR_DOWN);
prev_proj_menu = gpio_get_pin_value(PROJECTOR_MENU);
prev_proj_enter = gpio_get_pin_value(PROJECTOR_ENTER);
prev_proj_exit = gpio_get_pin_value(PROJECTOR_EXIT);
prev_vol_up = gpio_get_pin_value(VOLUME_UP);
prev_vol_dn = gpio_get_pin_value(VOLUME_DN);
cur_proj_left = prev_proj_left;
cur_proj_right = prev_proj_right;
cur_proj_up = prev_proj_up;
cur_proj_down = prev_proj_down;
cur_proj_menu = prev_proj_menu;
cur_proj_enter = prev_proj_enter;
cur_proj_exit = prev_proj_exit;
cur_vol_up = prev_vol_up;
cur_vol_dn = prev_vol_dn;
}
unsigned char Switch_On(unsigned char switch_flags)
{
if ((switch_flags & SWITCH2) && !gpio_get_pin_value(GPIO_PUSH_BUTTON_SW2))
return 1;
else
return 0;
}
__always_inline static int is_pressed(short idx) {
#if BOARD == EVK1104
return qt60168_is_key_pressed(idx_to_button_map[idx]);
#else
return (gpio_get_pin_value(button[idx]) == BUTTON_PRESSED);
#endif
}
unsigned int FC_standby(void)
{
unsigned int fc_state;
if (gpio_get_pin_value(START))
{
fc_state = FC_STATE_STARTUP_FANS;
gpio_clr_gpio_pin(LED_STOP);
gpio_set_gpio_pin(LED_START);
}
else
{
//make sure fuel cell stays off
//Supply valve closed
gpio_clr_gpio_pin(H2_VALVE);
//purge valve closed
gpio_clr_gpio_pin(PURGE_VALVE);
//relays open
gpio_clr_gpio_pin(MOTOR_RELAY);
gpio_clr_gpio_pin(RES_RELAY);
gpio_clr_gpio_pin(CAP_RELAY);
//led's off
gpio_clr_gpio_pin(LED_RUN);
gpio_clr_gpio_pin(LED_START);
gpio_clr_gpio_pin(LED_STOP);
//fan low
FANUpdate(0);
fc_state = FC_STATE_STANDBY;
}
return(fc_state);
}
// wait for ready status (e.g. after module init)
void bfin_wait_ready(void) {
// use ready pin
while( !gpio_get_pin_value(BFIN_READY_PIN) ) {
;; // print_dbg("\r\n wait bfin_ready ");
}
// print_dbg("... waited");
}
/*********************************************************************
Functions
*********************************************************************/
int main (void)
{
int i;
// initialize
init();
gpio_configure_pin(RESPONSE_A, GPIO_DIR_OUTPUT | GPIO_INIT_LOW);
gpio_configure_pin(TEST_A, GPIO_DIR_INPUT | GPIO_INIT_LOW);
gpio_configure_pin(RESPONSE_B, GPIO_DIR_OUTPUT | GPIO_INIT_LOW);
gpio_configure_pin(TEST_B, GPIO_DIR_INPUT | GPIO_INIT_LOW);
gpio_configure_pin(RESPONSE_C, GPIO_DIR_OUTPUT | GPIO_INIT_LOW);
gpio_configure_pin(TEST_C, GPIO_DIR_INPUT | GPIO_INIT_LOW);
// start code from here
gpio_set_pin_high(RESPONSE_A);
gpio_set_pin_high(RESPONSE_B);
gpio_set_pin_high(RESPONSE_C);
while(1)
{
if(!gpio_get_pin_value(TEST_A)){
gpio_set_pin_low(RESPONSE_A);
busy_delay_us(5);
gpio_set_pin_high(RESPONSE_A);
}
if(!gpio_get_pin_value(TEST_B)){
gpio_set_pin_low(RESPONSE_B);
busy_delay_us(5);
gpio_set_pin_high(RESPONSE_B);
}
if(!gpio_get_pin_value(TEST_C)){
gpio_set_pin_low(RESPONSE_C);
busy_delay_us(5);
gpio_set_pin_high(RESPONSE_C);
}
//printf("tick\n");
//gpio_toggle_pin(LED0_GPIO);
//busy_delay_ms(500);
}
}
// generate events from switch interrupts
void process_sw( const U8 swIdx ) {
static event_t e;
e.type = kSwitchEvents[swIdx];
e.data = gpio_get_pin_value(kSwitchPins[swIdx]);
event_post(&e);
// print_dbg("\r\n posted switch event ");
// print_dbg_ulong(swIdx);
}
// wait for ready status (e.g. after module init)
void bfin_wait_ready(void) {
#if 1
#else
// use ready pin
while( !gpio_get_pin_value(BFIN_READY_PIN) ) {
// print_dbg("\r\n waiting on bfin ready pin... ");
}
#endif
}
static void irq_port0_line1(void) {
if(gpio_get_pin_interrupt_flag(NMI)) {
gpio_clear_pin_interrupt_flag(NMI);
// print_dbg("\r\n ### NMI ### ");
static event_t e;
e.type = kEventFront;
e.data = gpio_get_pin_value(NMI);
event_post(&e);
}
}
// wait for busy pin to clear
void bfin_wait(void) {
// print_dbg("\r\n hwait: ");
// print_dbg_ulong(gpio_get_pin_value(BFIN_HWAIT_PIN));
while (gpio_get_pin_value(BFIN_HWAIT_PIN) > 0) {
;;
print_dbg("\r\n HWAIT asserted...");
// delay_ms(1);
}
delay_us(50);
}
/*! \brief Wait for NAND flash R/B signal to go ready.
*
* This function will wait for the R/B signal to go to the ready state. It
* will do a polled wait with the possibility for a timeout.
*
* \param nfd Pointer to the nand_driver_data struct which
* holds all vital data about the NAND GPIO driver.
*
* \return 0 on success, an error number elsewise.
*/
static int32_t nand_gpio_wait_ready(struct nand_driver_data *nfd)
{
/* Should be done within 3 milliseconds for all commands. */
volatile uint64_t timeout = 0x200000; //approx. 3secs
while (timeout > 0) {
if (gpio_get_pin_value(nfd->gpio_cont_pin, nfd->gpio_rb)) return 0;
--timeout;
}
return -ETIMEDOUT;
}
static inline void manage_button_isr(int pin, enum joystick_status_t status_pressed, enum joystick_status_t status_released)
{
if (gpio_get_pin_interrupt_flag(pin))
{
// Clear current pin status
joystick_status &= ~(status_pressed | status_released);
if (gpio_get_pin_value(pin))
joystick_status |= status_pressed;
else
joystick_status |= status_released;
gpio_clear_pin_interrupt_flag(pin);
}
}
uint32_t debounce2( uint32_t GPIO_PIN ){//regresar se presiono el boton o no
if(gpio_get_pin_value(GPIO_PIN)==1){// se presiono el boton?, sino salir de la funcion
delay_ms(10);
if (gpio_get_pin_value(GPIO_PIN)==0){//Si ya se libero, es ruido, salir sin hacer nada
goto salir;
}
espera://espera a que suelte el botón
while (gpio_get_pin_value(GPIO_PIN)==1){}
delay_ms(10);
if (gpio_get_pin_value(GPIO_PIN)==1) {//si ya lo presiono otra vez , es ruido, regresa a esperar
goto espera;
}
return 1;//debounce completo regresa 1
}
salir:
return 0;
}
static void testerA(void *pvParameters){
const portTickType xDelay = 10 / portTICK_RATE_MS;
gpio_configure_pin(RESPONSE_A, GPIO_DIR_OUTPUT | GPIO_INIT_LOW);
gpio_configure_pin(TEST_A, GPIO_DIR_INPUT | GPIO_INIT_LOW);
gpio_set_pin_high(RESPONSE_A);
while (1){
if(!gpio_get_pin_value(TEST_A)){
gpio_set_pin_low(RESPONSE_A);
vTaskDelay(xDelay);
gpio_set_pin_high(RESPONSE_A);
}
}
}
unsigned int FC_startup_fans(void)
{
unsigned int fc_state;
//relays open
gpio_clr_gpio_pin(START_RELAY);
gpio_clr_gpio_pin(MOTOR_RELAY);
gpio_clr_gpio_pin(RES_RELAY);
gpio_clr_gpio_pin(CAP_RELAY);
//valves closed
gpio_clr_gpio_pin(H2_VALVE);
gpio_clr_gpio_pin(PURGE_VALVE);
//set fans to min
FANUpdate(0);
//read fan tachometer to ensure fans are spinning
//increment if tach is 0 and reads 1
if(tachometer_test == 0)
{
if(gpio_get_pin_value(FAN_TACH)==1)
{
tachometer_test = 1;
}
}
fc_state = FC_STATE_STARTUP_FANS; //keep looping in this function
//then wait for it to go low again (then the fan is spinning)
if(tachometer_test == 1)
{
if(gpio_get_pin_value(FAN_TACH) == 0)
{
//fan is spinning go to startup
fc_state = FC_STATE_STARTUP_H2;
}
}
start_delay = millis();
return(FC_STATE_STARTUP_H2); //don't run this function again it is broken
}
void Lab3(void){
pm_switch_to_osc0(&AVR32_PM,FOSC0,OSC0_STARTUP);
int32_t cuenta =0;
while(1){
if (gpio_get_pin_value(QT1081_TOUCH_SENSOR_ENTER))
{
while (gpio_get_pin_value(QT1081_TOUCH_SENSOR_DOWN)==0)
{
display(cuenta++);
if (cuenta>9)
{
cuenta=0;
}
delay_s(100);
}
//ya se presiono la tecla down
while (gpio_get_pin_value(QT1081_TOUCH_SENSOR_ENTER)==0)
{
display(cuenta--);
if (cuenta<0)
{
cuenta=9;
}
delay_s(100);
}
}
}
}
/*! \brief This is the main function.
*
*/
int main(void)
{
U8 button_status=0;
// Read Button Status
button_status=gpio_get_pin_value(GPIO_USB_MODE_BUTTON);
// If Button is pressed, launch prog2.
if(button_status==0) {
jumpAddress(PROGRAM2_START_ADDRESS);
}
// else launch prog1.
else {
jumpAddress(PROGRAM1_START_ADDRESS);
}
while(1); // Never reached
}
int main(void)
{
sysclk_init();
init_dbg_rs232(FMCK_HZ);
init_gpio();
assign_main_event_handlers();
init_events();
init_tc();
init_spi();
init_adc();
irq_initialize_vectors();
register_interrupts();
cpu_irq_enable();
init_usb_host();
init_monome();
if(flash_is_fresh()) {
// nothing has been stored in the flash memory so far
// so you need to initialize any variables you store in flash here with appropriate default values
}
else {
// read from flash
flash_read();
}
clock_pulse = &clock;
clock_external = !gpio_get_pin_value(B09);
// start timers that track clock, ADCs (including the clock and the param knobs) and the front panel button
timer_add(&clockTimer,120,&clockTimer_callback, NULL);
timer_add(&keyTimer,50,&keyTimer_callback, NULL);
timer_add(&adcTimer,100,&adcTimer_callback, NULL);
clock_temp = 10000; // out of ADC range to force tempo
// main loop - you probably don't need to do anything here as everything should be done by handlers
while (true) {
check_events();
}
}
static void handle_Switch5(s32 data) {
/// power switch
render_boot("");
render_boot("");
render_boot("");
render_boot("");
render_boot("");
render_boot("");
render_boot("powering down");
// skip flash write if MODE is down
if(!gpio_get_pin_value(SW_MODE_PIN)) {
scene_write_default();
}
// power down
delay_ms(100);
gpio_clr_gpio_pin(POWER_CTL_PIN);
}
static ai_device_status_t ai_sd_mmc_get_device_status(ai_async_status_t *cmd_ai_status)
{
*cmd_ai_status = CMD_DONE;
#if defined(SD_MMC_CARD_DETECT_PIN)
if (gpio_get_pin_value(SD_MMC_CARD_DETECT_PIN))
#endif
#if defined(SUPPORT_SD_MMC_MCI) && SUPPORT_SD_MMC_MCI == true
if (sd_mmc_mci_mem_check(SD_SLOT))
{
volatile uint32_t card_size;
sd_mmc_mci_read_capacity(SD_SLOT, (uint32_t *) &card_size);
return AI_DEVICE_STATUS_CONNECTED;
}
#else
if (sd_mmc_spi_check_presence() == true)
return AI_DEVICE_STATUS_CONNECTED;
#endif
return AI_DEVICE_STATUS_NOT_PRESENT;
}
static void testerC(void *pvParameters){
const portTickType xDelay = 5 / portTICK_RATE_MS;
portTickType xLastWakeTime;
xLastWakeTime = xTaskGetTickCount();
gpio_configure_pin(RESPONSE_C, GPIO_DIR_OUTPUT | GPIO_INIT_LOW);
gpio_configure_pin(TEST_C, GPIO_DIR_INPUT | GPIO_INIT_LOW);
gpio_set_pin_high(RESPONSE_C);
while (1){
vTaskDelayUntil(&xLastWakeTime, xDelay);
if(!gpio_get_pin_value(TEST_C)){
gpio_set_pin_low(RESPONSE_C);
vTaskDelay(xDelay);
gpio_set_pin_high(RESPONSE_C);
}
}
}
static void vTask_B(void *pvParameters)
{
/* init counter variable to be used for periodic execution */
portTickType xLastWakeTime;
const portTickType xFrequency = TASK_B_PERIOD/portTICK_RATE_MS;
xLastWakeTime = xTaskGetTickCount();
while (true)
{
/* Wait until the period time is up */
vTaskDelayUntil(&xLastWakeTime, xFrequency);
/* Check for test signal */
if (!gpio_get_pin_value(TEST_B))
{
gpio_set_pin_low(RESPONSE_B);
vTaskDelay(RESPONSE_DELAY/portTICK_RATE_MS);
gpio_set_pin_high(RESPONSE_B);
}
}
}
/*********************************************************************
Functions
*********************************************************************/
int main (void)
{
int i;
// initialize
init();
// start code from here
gpio_set_pin_high(RESPONSE_A);
while(1)
{
if(!gpio_get_pin_value(TEST_A)){
gpio_set_pin_low(RESPONSE_A);
busy_delay_us(5);
gpio_set_pin_high(RESPONSE_A);
}
//printf("tick\n");
//gpio_toggle_pin(LED0_GPIO);
//busy_delay_ms(500);
}
}
void aic23b_dac_start(uint32_t sample_rate_hz,
uint8_t num_channels,
uint8_t bits_per_sample,
bool swap_channels,
void (*callback)(uint32_t arg),
uint32_t callback_opt,
uint32_t pba_hz)
{
#if AIC23B_CTRL_INTERFACE == AIC23B_CTRL_INTERFACE_SPI
static const spi_options_t AIC23B_SPI_OPTIONS =
{
.reg = AIC23B_SPI_NPCS,
.baudrate = AIC23B_SPI_MASTER_SPEED,
.bits = AIC23B_CTRL_SIZE,
.spck_delay = 0,
.trans_delay = 0,
.stay_act = 0,
.spi_mode = 3,
.modfdis = 1
};
spi_setupChipReg(AIC23B_SPI, &AIC23B_SPI_OPTIONS, pba_hz);
#endif
aic23b_dac_stop();
gpio_enable_module(AIC23B_SSC_DAC_GPIO_MAP,
sizeof(AIC23B_SSC_DAC_GPIO_MAP) / sizeof(AIC23B_SSC_DAC_GPIO_MAP[0]));
aic23b_pdc_t pdc;
pdc.data = AIC23B_DEFAULT(AIC23B_PDC);
pdc.off = 0;
pdc.clk = 0;
pdc.osc = 0;
pdc.out = 0;
pdc.dac = 0;
pdc.adc = 1;
pdc.mic = 1;
pdc.line = 1;
aic23b_set_power_down_state(pdc);
aic23b_dac_setup(sample_rate_hz,
num_channels,
bits_per_sample,
swap_channels,
callback,
callback_opt,
pba_hz);
aic23b_aapc_t aapc;
aapc.data = AIC23B_DEFAULT(AIC23B_AAPC);
aapc.ste = 0;
aapc.dac = 1;
aapc.byp = 0;
aapc.micm = 1;
aapc.micb = 0;
aic23b_set_analog_audio_path(aapc);
aic23b_dapc_t dapc;
dapc.data = AIC23B_DEFAULT(AIC23B_DAPC);
dapc.dacm = 0;
dapc.deemp = AIC23B_DAPC_DEEMP_NONE;
dapc.adchp = 1;
aic23b_set_digital_audio_path(dapc);
// set an acceptable start volume
aic23b_set_headphone_volume(AIC23B_LEFT_CHANNEL | AIC23B_RIGHT_CHANNEL,
-30,
true);
aic23b_activate_dig_audio(true);
INTC_register_interrupt(&aic23b_ssc_tx_pdca_int_handler,
AIC23B_SSC_TX_PDCA_IRQ,
AIC23B_SSC_TX_PDCA_INT_LEVEL);
}
void aic23b_dac_setup(uint32_t sample_rate_hz,
uint8_t num_channels,
uint8_t bits_per_sample,
bool swap_channels,
void (*callback)(uint32_t arg),
uint32_t callback_opt,
uint32_t pba_hz)
{
#if defined(AIC23B_DAC_USE_RX_CLOCK) && AIC23B_DAC_USE_RX_CLOCK == true
#if defined(AIC23B_DAC_RX_CLOCK_SET_CALLBACK)
AIC23B_DAC_RX_CLOCK_SET_CALLBACK(2 * sample_rate_hz *
((bits_per_sample <= 16) ? 16 :
(bits_per_sample <= 20) ? 20 :
(bits_per_sample <= 24) ? 24 :
32));
#endif
ssc_i2s_init(AIC23B_SSC,
sample_rate_hz,
bits_per_sample,
(bits_per_sample <= 16) ? 16 :
(bits_per_sample <= 20) ? 20 :
(bits_per_sample <= 24) ? 24 :
32,
SSC_I2S_MODE_STEREO_OUT_EXT_CLK,
pba_hz);
#else
ssc_i2s_init(AIC23B_SSC,
sample_rate_hz,
bits_per_sample,
(bits_per_sample <= 16) ? 16 :
(bits_per_sample <= 20) ? 20 :
(bits_per_sample <= 24) ? 24 :
32,
SSC_I2S_MODE_STEREO_OUT,
pba_hz);
#endif
pdca_channel_options_t aic23b_ssc_pdca_options =
{
.addr = NULL,
.size = 0,
.r_addr = NULL,
.r_size = 0,
.pid = AIC23B_SSC_TX_PDCA_PID,
.transfer_size = (bits_per_sample <= 8) ? PDCA_TRANSFER_SIZE_BYTE :
(bits_per_sample <= 16) ? PDCA_TRANSFER_SIZE_HALF_WORD :
PDCA_TRANSFER_SIZE_WORD
};
pdca_init_channel(AIC23B_SSC_TX_PDCA_CHANNEL, &aic23b_ssc_pdca_options);
pdca_enable(AIC23B_SSC_TX_PDCA_CHANNEL);
#if !defined(AIC23B_DAC_USE_RX_CLOCK) || AIC23B_DAC_USE_RX_CLOCK == false || \
!defined(AIC23B_DAC_RX_CLOCK_SET_CALLBACK)
// Set DAC frequency
aic23b_configure_freq(AIC23B_MCLK_HZ, sample_rate_hz);
#endif
aic23b_daif_t daif;
daif.data = AIC23B_DEFAULT(AIC23B_DAIF);
daif.ms = AIC23B_DAIF_MS_SLAVE;
daif.lrswap = swap_channels;
daif.lrp = 0;
daif.iwl = (bits_per_sample <= 16) ? AIC23B_DAIF_IWL_16 :
(bits_per_sample <= 20) ? AIC23B_DAIF_IWL_20 :
(bits_per_sample <= 24) ? AIC23B_DAIF_IWL_24 :
AIC23B_DAIF_IWL_32;
daif.fmt = AIC23B_DAIF_FMT_I2S;
aic23b_write_reg(AIC23B_DAIF, daif.data);
aic23b_output_params.num_channels = num_channels;
aic23b_output_params.callback = callback;
aic23b_output_params.callback_opt = callback_opt;
}
#endif
bool aic23b_dac_output(void *sample_buffer, size_t sample_length)
{
bool global_interrupt_enabled;
if (!(pdca_get_transfer_status(AIC23B_SSC_TX_PDCA_CHANNEL) &
PDCA_TRANSFER_COUNTER_RELOAD_IS_ZERO))
return false;
if (sample_length)
{
if (aic23b_output_params.num_channels == 1)
{
int16_t *s16_sample_buffer = sample_buffer;
int i;
for (i = sample_length - 1; i >= 0; i--)
{
s16_sample_buffer[2 * i + 1] =
s16_sample_buffer[2 * i] = s16_sample_buffer[i];
}
}
// The PDCA is not able to synchronize its start of transfer with the SSC
// start of period, so this has to be done by polling the TF pin.
// Not doing so may result in channels being swapped randomly.
if ((global_interrupt_enabled = Is_global_interrupt_enabled()))
Disable_global_interrupt();
if (pdca_get_transfer_status(AIC23B_SSC_TX_PDCA_CHANNEL) &
PDCA_TRANSFER_COMPLETE)
{
while (gpio_get_pin_value(AIC23B_SSC_TX_FRAME_SYNC_PIN));
while (!gpio_get_pin_value(AIC23B_SSC_TX_FRAME_SYNC_PIN));
}
pdca_reload_channel(AIC23B_SSC_TX_PDCA_CHANNEL, sample_buffer, sample_length * 2);
pdca_get_reload_size(AIC23B_SSC_TX_PDCA_CHANNEL);
if (global_interrupt_enabled)
Enable_global_interrupt();
if (aic23b_output_params.callback_opt & AUDIO_DAC_OUT_OF_SAMPLE_CB)
pdca_enable_interrupt_transfer_complete(AIC23B_SSC_TX_PDCA_CHANNEL);
if (aic23b_output_params.callback_opt & AUDIO_DAC_RELOAD_CB)
pdca_enable_interrupt_reload_counter_zero(AIC23B_SSC_TX_PDCA_CHANNEL);
}
return true;
}
//!
//! @brief Entry point of the AK5394A task management
//!
void AK5394A_task(void *pvParameters)
{
portTickType xLastWakeTime;
xLastWakeTime = xTaskGetTickCount();
int i;
while (TRUE)
{
// All the hardwork is done by the pdca and the interrupt handler.
// Just check whether sampling freq is changed, to do rate change etc.
vTaskDelayUntil(&xLastWakeTime, configTSK_AK5394A_PERIOD);
if (freq_changed){
if (current_freq.frequency == 96000){
pdca_disable_interrupt_reload_counter_zero(PDCA_CHANNEL_SSC_RX);
pdca_disable(PDCA_CHANNEL_SSC_RX);
gpio_set_gpio_pin(AK5394_DFS0); // L H -> 96khz
gpio_clr_gpio_pin(AK5394_DFS1);
pm_gc_disable(&AVR32_PM, AVR32_PM_GCLK_GCLK1);
pm_gc_setup(&AVR32_PM, AVR32_PM_GCLK_GCLK1, // gc
0, // osc_or_pll: use Osc (if 0) or PLL (if 1)
1, // pll_osc: select Osc0/PLL0 or Osc1/PLL1
1, // diven - enabled
0); // divided by 2. Therefore GCLK1 = 6.144Mhz
pm_gc_enable(&AVR32_PM, AVR32_PM_GCLK_GCLK1);
if (Is_usb_full_speed_mode()) FB_rate = 96 << 14;
else FB_rate = (96) << 13;
}
else if (current_freq.frequency == 192000)
{
pdca_disable_interrupt_reload_counter_zero(PDCA_CHANNEL_SSC_RX);
pdca_disable(PDCA_CHANNEL_SSC_RX);
gpio_clr_gpio_pin(AK5394_DFS0); // H L -> 192khz
gpio_set_gpio_pin(AK5394_DFS1);
pm_gc_disable(&AVR32_PM, AVR32_PM_GCLK_GCLK1);
pm_gc_setup(&AVR32_PM, AVR32_PM_GCLK_GCLK1, // gc
0, // osc_or_pll: use Osc (if 0) or PLL (if 1)
1, // pll_osc: select Osc0/PLL0 or Osc1/PLL1
0, // diven - disabled
0); // GCLK1 = 12.288Mhz
pm_gc_enable(&AVR32_PM, AVR32_PM_GCLK_GCLK1);
if (Is_usb_full_speed_mode()) FB_rate = 192 << 14;
else FB_rate = (192) << 13;
}
else if (current_freq.frequency == 48000) // 48khz
{
pdca_disable_interrupt_reload_counter_zero(PDCA_CHANNEL_SSC_RX);
pdca_disable(PDCA_CHANNEL_SSC_RX);
gpio_clr_gpio_pin(AK5394_DFS0); // L L -> 48khz
gpio_clr_gpio_pin(AK5394_DFS1);
pm_gc_disable(&AVR32_PM, AVR32_PM_GCLK_GCLK1);
pm_gc_setup(&AVR32_PM, AVR32_PM_GCLK_GCLK1, // gc
0, // osc_or_pll: use Osc (if 0) or PLL (if 1)
1, // pll_osc: select Osc0/PLL0 or Osc1/PLL1
1, // diven - enabled
1); // divided by 4. Therefore GCLK1 = 3.072Mhz
pm_gc_enable(&AVR32_PM, AVR32_PM_GCLK_GCLK1);
if (Is_usb_full_speed_mode()) FB_rate = 48 << 14;
else FB_rate = (48) << 13;
}
// re-sync SSC to LRCK
// Wait for the next frame synchronization event
// to avoid channel inversion. Start with left channel - FS goes low
// However, the channels are reversed at 192khz
if (current_freq.frequency == 192000) {
while (gpio_get_pin_value(AK5394_LRCK));
while (!gpio_get_pin_value(AK5394_LRCK)); // exit when FS goes high
}
else {
while (!gpio_get_pin_value(AK5394_LRCK));
while (gpio_get_pin_value(AK5394_LRCK)); // exit when FS goes low
}
// Enable now the transfer.
pdca_enable(PDCA_CHANNEL_SSC_RX);
// Init PDCA channel with the pdca_options.
pdca_init_channel(PDCA_CHANNEL_SSC_RX, &PDCA_OPTIONS); // init PDCA channel with options.
pdca_enable_interrupt_reload_counter_zero(PDCA_CHANNEL_SSC_RX);
// reset freq_changed flag
freq_changed = FALSE;
}
if (usb_alternate_setting_out_changed){
if (usb_alternate_setting_out != 1){
for (i = 0; i < SPK_BUFFER_SIZE; i++){
spk_buffer_0[i] = 0;
spk_buffer_1[i] = 0;
}
};
usb_alternate_setting_out_changed = FALSE;
}
}
}
//!
//! @brief This function initializes the hardware/software resources
//! required for device CDC task.
//!
void AK5394A_task_init(void)
{
// Set up CS4344
// Set up GLCK1 to provide master clock for CS4344
gpio_enable_module_pin(GCLK1, GCLK1_FUNCTION); // for DA_SCLK
// LRCK is SCLK / 64 generated by TX_SSC
// so SCLK of 6.144Mhz ===> 96khz
pm_gc_setup(&AVR32_PM, AVR32_PM_GCLK_GCLK1, // gc
0, // osc_or_pll: use Osc (if 0) or PLL (if 1)
1, // pll_osc: select Osc0/PLL0 or Osc1/PLL1
1, // diven - enabled
0); // divided by 2. Therefore GCLK1 = 6.144Mhz
pm_gc_enable(&AVR32_PM, AVR32_PM_GCLK_GCLK1);
pm_enable_osc1_ext_clock(&AVR32_PM); // OSC1 is clocked by 12.288Mhz Osc
// from AK5394A Xtal Oscillator
pm_enable_clk1(&AVR32_PM, OSC1_STARTUP);
// Set up AK5394A
gpio_clr_gpio_pin(AK5394_RSTN); // put AK5394A in reset
gpio_clr_gpio_pin(AK5394_DFS0); // L L -> 48khz
gpio_clr_gpio_pin(AK5394_DFS1);
gpio_set_gpio_pin(AK5394_HPFE); // enable HP filter
gpio_clr_gpio_pin(AK5394_ZCAL); // use VCOML and VCOMR to cal
gpio_set_gpio_pin(AK5394_SMODE1); // SMODE1 = H for Master i2s
gpio_set_gpio_pin(AK5394_SMODE2); // SMODE2 = H for Master/Slave i2s
gpio_set_gpio_pin(AK5394_RSTN); // start AK5394A
while (gpio_get_pin_value(AK5394_CAL)); // wait till CAL goes low
// Assign GPIO to SSC.
gpio_enable_module(SSC_GPIO_MAP, sizeof(SSC_GPIO_MAP) / sizeof(SSC_GPIO_MAP[0]));
gpio_enable_pin_glitch_filter(SSC_RX_CLOCK);
gpio_enable_pin_glitch_filter(SSC_RX_DATA);
gpio_enable_pin_glitch_filter(SSC_RX_FRAME_SYNC);
gpio_enable_pin_glitch_filter(SSC_TX_CLOCK);
gpio_enable_pin_glitch_filter(SSC_TX_DATA);
gpio_enable_pin_glitch_filter(SSC_TX_FRAME_SYNC);
current_freq.frequency = 96000;
// set up SSC
ssc_i2s_init(ssc, 96000, 24, 32, SSC_I2S_MODE_STEREO_OUT_STEREO_IN, FPBA_HZ);
// set up PDCA
// In order to avoid long slave handling during undefined length bursts (INCR), the Bus Matrix
// provides specific logic in order to re-arbitrate before the end of the INCR transfer.
//
// HSB Bus Matrix: By default the HSB bus matrix mode is in Undefined length burst type (INCR).
// Here we have to put in single access (the undefined length burst is treated as a succession of single
// accesses, allowing re-arbitration at each beat of the INCR burst.
// Refer to the HSB bus matrix section of the datasheet for more details.
//
// HSB Bus matrix register MCFG1 is associated with the CPU instruction master interface.
AVR32_HMATRIX.mcfg[AVR32_HMATRIX_MASTER_CPU_INSN] = 0x1;
audio_buffer_in = 0;
spk_buffer_out = 0;
// Register PDCA IRQ interrupt.
pdca_set_irq();
// Init PDCA channel with the pdca_options.
pdca_init_channel(PDCA_CHANNEL_SSC_RX, &PDCA_OPTIONS); // init PDCA channel with options.
pdca_enable_interrupt_reload_counter_zero(PDCA_CHANNEL_SSC_RX);
pdca_init_channel(PDCA_CHANNEL_SSC_TX, &SPK_PDCA_OPTIONS); // init PDCA channel with options.
pdca_enable_interrupt_reload_counter_zero(PDCA_CHANNEL_SSC_TX);
//////////////////////////////////////////////
// Enable now the transfer.
pdca_enable(PDCA_CHANNEL_SSC_TX);
xTaskCreate(AK5394A_task,
configTSK_AK5394A_NAME,
configTSK_AK5394A_STACK_SIZE,
NULL,
configTSK_AK5394A_PRIORITY,
NULL);
}