void ms3_dac_mute(bool mute)
{
if (mute) {
U32 save_dac_reload_callback_opt;
// Mute all channels
// ms3_write_reg(MS3_MUTE_VOL_CTRL, 0xAF);
// Disable the reload callback function
save_dac_reload_callback_opt = ms3_output_params.callback_opt;
ms3_output_params.callback_opt = 0;
// Disable the transfer complete interruption and wait until the transfer is complete
pdca_disable_interrupt_reload_counter_zero(MS3_SSC_TX_PDCA_CHANNEL);
while (!(pdca_get_transfer_status(MS3_SSC_TX_PDCA_CHANNEL) & PDCA_TRANSFER_COMPLETE));
// Re-enable the reload callback function
ms3_output_params.callback_opt = save_dac_reload_callback_opt;
// Set as gpio pin
gpio_enable_gpio(MS3_GPIO_MAP, sizeof(MS3_GPIO_MAP) / sizeof(MS3_GPIO_MAP[0]));
}
else {
// Re-enable the reload interrupt
pdca_enable_interrupt_reload_counter_zero(MS3_SSC_TX_PDCA_CHANNEL);
// Unmute all channels
// ms3_write_reg(MS3_MUTE_VOL_CTRL, 0xA0);
// Enable SSC interface
gpio_enable_module(MS3_GPIO_MAP, sizeof(MS3_GPIO_MAP) / sizeof(MS3_GPIO_MAP[0]));
}
}
void aic23b_dac_mute(bool mute)
{
#if (AIC23B_MODE==AIC23B_MODE_DAC)
/* if(mute==true) {
pdca_disable(AIC23B_SSC_TX_PDCA_CHANNEL);
}
else {
pdca_enable(AIC23B_SSC_TX_PDCA_CHANNEL);
}
*/
if (mute)
{
uint32_t save_dac_reload_callback_opt;
// Disable the reload callback function
save_dac_reload_callback_opt = aic23b_output_params.callback_opt;
aic23b_output_params.callback_opt = 0;
// Disable the transfer complete interruption and wait until the transfer is complete
pdca_disable_interrupt_reload_counter_zero(AIC23B_SSC_TX_PDCA_CHANNEL);
while (!(pdca_get_transfer_status(AIC23B_SSC_TX_PDCA_CHANNEL) & PDCA_TRANSFER_COMPLETE));
// Re-enable the reload callback function
aic23b_output_params.callback_opt = save_dac_reload_callback_opt;
}
else
{
// Re-enable the reload interrupt
pdca_enable_interrupt_reload_counter_zero(AIC23B_SSC_TX_PDCA_CHANNEL);
}
#endif
}
uint32_t pdca_init_channel(uint8_t pdca_ch_number,
const pdca_channel_options_t *opt)
{
/* get the correct channel pointer */
volatile avr32_pdca_channel_t *pdca_channel = pdca_get_handler(
pdca_ch_number);
pdca_disable_interrupt_transfer_complete(pdca_ch_number);
pdca_disable_interrupt_reload_counter_zero(pdca_ch_number);
irqflags_t flags = cpu_irq_save();
pdca_channel->mar = (uint32_t)opt->addr;
pdca_channel->tcr = opt->size;
pdca_channel->psr = opt->pid;
pdca_channel->marr = (uint32_t)opt->r_addr;
pdca_channel->tcrr = opt->r_size;
pdca_channel->mr =
#if (AVR32_PDCA_H_VERSION >= 120)
opt->etrig << AVR32_PDCA_ETRIG_OFFSET |
#endif
opt->transfer_size << AVR32_PDCA_SIZE_OFFSET;
pdca_channel->cr = AVR32_PDCA_ECLR_MASK;
pdca_channel->isr;
cpu_irq_restore(flags);
return PDCA_SUCCESS;
}
void aic23b_dac_flush(void)
{
pdca_disable_interrupt_transfer_complete(AIC23B_SSC_TX_PDCA_CHANNEL);
pdca_disable_interrupt_reload_counter_zero(AIC23B_SSC_TX_PDCA_CHANNEL);
while (!(pdca_get_transfer_status(AIC23B_SSC_TX_PDCA_CHANNEL) &
PDCA_TRANSFER_COMPLETE));
}
/*! \brief Flushes the sample buffer being output to the ABDAC.
*/
void tpa6130_dac_flush(void)
{
pdca_disable_interrupt_transfer_complete(TPA6130_ABDAC_PDCA_CHANNEL);
pdca_disable_interrupt_reload_counter_zero(TPA6130_ABDAC_PDCA_CHANNEL);
/*TODO Do we really want to wait here? Or do we just don't care when
* the buffer is empty/flushed */
//while(!pdca_get_transfer_status(TPA6130_ABDAC_PDCA_CHANNEL) &
// PDCA_TRANSFER_COMPLETE);
pdca_disable (TPA6130_ABDAC_PDCA_CHANNEL );
pdca_load_channel (TPA6130_ABDAC_PDCA_CHANNEL,0x0, 0);
pdca_reload_channel(TPA6130_ABDAC_PDCA_CHANNEL,0x0, 0);
pdca_enable (TPA6130_ABDAC_PDCA_CHANNEL );
}
ISR(tpa6130_abdac_tx_pdca_int_handler, TPA6130_ABDAC_PDCA_IRQ_GROUP, TPA6130_ABDAC_PDCA_INT_LEVEL)
{
if (pdca_get_transfer_status(TPA6130_ABDAC_PDCA_CHANNEL) & PDCA_TRANSFER_COMPLETE)
{
pdca_disable_interrupt_transfer_complete(TPA6130_ABDAC_PDCA_CHANNEL);
if (tpa6130_output_param.callback_opt & AUDIO_DAC_OUT_OF_SAMPLE_CB)
tpa6130_output_param.callback(AUDIO_DAC_OUT_OF_SAMPLE_CB);
}
if (pdca_get_transfer_status(TPA6130_ABDAC_PDCA_CHANNEL) & PDCA_TRANSFER_COUNTER_RELOAD_IS_ZERO)
{
pdca_disable_interrupt_reload_counter_zero(TPA6130_ABDAC_PDCA_CHANNEL);
if (tpa6130_output_param.callback_opt & AUDIO_DAC_RELOAD_CB)
tpa6130_output_param.callback(AUDIO_DAC_RELOAD_CB);
}
}
__interrupt
#endif
static void aic23b_ssc_rx_pdca_int_handler(void)
{
if (pdca_get_transfer_status(AIC23B_SSC_RX_PDCA_CHANNEL) & PDCA_TRANSFER_COMPLETE)
{
pdca_disable_interrupt_transfer_complete(AIC23B_SSC_RX_PDCA_CHANNEL);
if (aic23b_output_params.callback_opt & AUDIO_ADC_OUT_OF_SAMPLE_CB)
aic23b_output_params.callback(AUDIO_ADC_OUT_OF_SAMPLE_CB);
}
if (pdca_get_transfer_status(AIC23B_SSC_RX_PDCA_CHANNEL) & PDCA_TRANSFER_COUNTER_RELOAD_IS_ZERO)
{
pdca_disable_interrupt_reload_counter_zero(AIC23B_SSC_RX_PDCA_CHANNEL);
if (aic23b_output_params.callback_opt & AUDIO_ADC_RELOAD_CB)
aic23b_output_params.callback(AUDIO_ADC_RELOAD_CB);
}
}
__interrupt
#endif
static void ms3_ssc_tx_pdca_int_handler(void)
{
if (pdca_get_transfer_status(MS3_SSC_TX_PDCA_CHANNEL) & PDCA_TRANSFER_COMPLETE)
{
pdca_disable_interrupt_transfer_complete(MS3_SSC_TX_PDCA_CHANNEL);
if (ms3_output_params.callback_opt & AUDIO_DAC_OUT_OF_SAMPLE_CB)
ms3_output_params.callback(AUDIO_DAC_OUT_OF_SAMPLE_CB);
}
if (pdca_get_transfer_status(MS3_SSC_TX_PDCA_CHANNEL) & PDCA_TRANSFER_COUNTER_RELOAD_IS_ZERO)
{
pdca_disable_interrupt_reload_counter_zero(MS3_SSC_TX_PDCA_CHANNEL);
if (ms3_output_params.callback_opt & AUDIO_DAC_RELOAD_CB)
ms3_output_params.callback(AUDIO_DAC_RELOAD_CB);
}
}
//!
//! @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 Sets the DACs up with new settings.
*
* \note The DACs must have been started beforehand.
*/
void tpa6130_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)
{
// save input parameters to local driver data
tpa6130_output_param.num_channels = num_channels;
tpa6130_output_param.callback = callback;
tpa6130_output_param.callback_opt = callback_opt;
/* Probe for amplifier and initialize it */
tpa6130_init();
#if defined(TPA6130_DAC_CLOCK_SET_CALLBACK)
TPA6130_DAC_CLOCK_SET_CALLBACK(sample_rate_hz);
#else
/* ABDAC configuration
* The ABDAC needs the input frequency of its generic clock (bus_hz)
* Here we use the configuration value from the conf_tpa6130.h file
* (TPA6130_ABDAC_GCLK_INPUT_HZ).
* The sample rate specifies the desired sample rate for the ABDAC.
* The generic clock input must be greater than 256*sample_rate_hz
* or the setup of the ABDAC will fail silently here.
* TODO we could add asserts here to detect wrong settings during
* compile time.
*/
if(!abdac_set_dac_sample_rate(sample_rate_hz)) {
// if it is not possible to set correctly the sample rate
// Use default set function
abdac_set_dac_hz(TPA6130_ABDAC, TPA6130_ABDAC_GCLK_INPUT_HZ,sample_rate_hz);
}
#endif
if(swap_channels)
{
abdac_swap_channels(TPA6130_ABDAC);
}
abdac_enable(TPA6130_ABDAC);
/* PDCA setup */
/*FIXME we use only word as transfer size for now.
* half-word transfer size will only write to channel0
* of the ABDAC, this can be used to implement mono */
pdca_channel_options_t tpa6130_abdac_pdca_options =
{
.addr = NULL,
.size = 0,
.r_addr = 0,
.r_size = 0,
.pid = TPA6130_ABDAC_PDCA_PID,
.transfer_size = PDCA_TRANSFER_SIZE_WORD
};
/* Initialize the PCDA for the ABDAC
* The channel number can be set in the configuration file
* with the define TPA6130_ABDAC_PDCA_CHANNEL.
*/
pdca_init_channel(TPA6130_ABDAC_PDCA_CHANNEL,
&tpa6130_abdac_pdca_options);
/* Enable the PDCA channel. Since we did not provide any data
* yet the channel is in idle mode */
pdca_enable(TPA6130_ABDAC_PDCA_CHANNEL);
}
/*! \brief Outputs a sample buffer to the DACs.
* The input requires a sample buffer that consists of words (32-bit)
* which contain two (16-bit) samples, one for each channel.
*
* \note The DACs must have been started beforehand.
*/
bool tpa6130_dac_output(void *sample_buffer, size_t sample_length)
{
//int global_interrupt_enabled;
/*Wait until the PDCA loads the reload value to its transfer
* counter register(TCRR=0). Then we are ready to set up a new
* transfer */
if(!(pdca_get_transfer_status(TPA6130_ABDAC_PDCA_CHANNEL) &
PDCA_TRANSFER_COUNTER_RELOAD_IS_ZERO))
{
return false;
}
/* Nothing to do if we get no data. */
if(sample_length)
{
/*TODO Do we really need to adjust the buffer for mono*/
/* While reloading the PDC we do not need any active interrupt*/
//if((global_interrupt_enabled = cpu_irq_is_enabled()))
// cpu_irq_disable();
/*FIXME This assumes a stereo 16-bit sample size */
// one sample here consists of 2x16-bit (16-bit stereo)
pdca_reload_channel(TPA6130_ABDAC_PDCA_CHANNEL,
sample_buffer, sample_length);
//if(global_interrupt_enabled)
// cpu_irq_enable();
/*TODO enable transfer complete interrupt
* Is it possible to move this to setup or other places?*/
if(tpa6130_output_param.callback_opt & AUDIO_DAC_OUT_OF_SAMPLE_CB)
pdca_enable_interrupt_transfer_complete(TPA6130_ABDAC_PDCA_CHANNEL);
if (tpa6130_output_param.callback_opt & AUDIO_DAC_RELOAD_CB)
pdca_enable_interrupt_reload_counter_zero(TPA6130_ABDAC_PDCA_CHANNEL);
}
return true;
}
bool tpa6130_dac_is_volume_muted(void)
{
return false;
}
void tpa6130_dac_mute(bool mute)
{
// //1st Version Mute Audio for Play/Pause
/* int volume=tpa6130_get_volume();
if(mute==true) {
//Mute volume
volume= volume|MUTE_L|MUTE_R;
}
else {
//Unmute volume
volume= volume&(~(MUTE_L|MUTE_R));
}
tpa6130_write_data(TPA6130_VOLUME_AND_MUTE,volume);
*/
//2n Version Stop PDCA >> No lost of audio when pause
/* if(mute==true) {
pdca_disable(TPA6130_ABDAC_PDCA_CHANNEL);
}
else {
pdca_enable(TPA6130_ABDAC_PDCA_CHANNEL);
}
*/
// 3rd Version wait until the current buffers are empty and disable the interrupts
int8_t volume = tpa6130_get_volume();
if (mute)
{
uint32_t save_dac_reload_callback_opt;
// Mute the audio stream
volume = volume | MUTE_L | MUTE_R;
tpa6130_write_data(TPA6130_VOLUME_AND_MUTE, volume);
// Disable the reload channel of the interrupt
save_dac_reload_callback_opt = tpa6130_output_param.callback_opt;
tpa6130_output_param.callback_opt = 0;
// Disable the reload interruption and wait until the transfer is complete
pdca_disable_interrupt_reload_counter_zero(TPA6130_ABDAC_PDCA_CHANNEL);
while (!(pdca_get_transfer_status(TPA6130_ABDAC_PDCA_CHANNEL) & PDCA_TRANSFER_COMPLETE));
// Restore the reload callback function
tpa6130_output_param.callback_opt = save_dac_reload_callback_opt;
}
else
{
// Re-enable the interrupts
pdca_enable_interrupt_reload_counter_zero(TPA6130_ABDAC_PDCA_CHANNEL);
// Un-mute the audio stream
volume = volume & (~(MUTE_L | MUTE_R));
tpa6130_write_data(TPA6130_VOLUME_AND_MUTE, volume);
}
}
