Quentin Roche / ST_I2S

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drivers/I2S.cpp@17:7a4a4631672c, 2017-01-26 (annotated)

Committer:
Wolfgang Betz
Date:
Thu Jan 26 10:37:27 2017 +0100
Revision:
17:7a4a4631672c
Parent:
16:04e1abb4cca3
Child:
19:ef6ef1795e30
Remove `namespace mbed`

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Wolfgang Betz 0:752e74bf5ef1 1 #include "drivers/I2S.h"
Wolfgang Betz 0:752e74bf5ef1 2 #include "platform/critical.h"
Wolfgang Betz 0:752e74bf5ef1 3 #include "platform/mbed_assert.h"
Wolfgang Betz 0:752e74bf5ef1 4
Wolfgang Betz 0:752e74bf5ef1 5 #if DEVICE_I2S
Wolfgang Betz 0:752e74bf5ef1 6
Wolfgang Betz 10:1a612c2e4a85 7 I2S* I2S::_owner = NULL;
Wolfgang Betz 10:1a612c2e4a85 8 SingletonPtr<PlatformMutex> I2S::_mutex; // intentional class level lock!
Wolfgang Betz 0:752e74bf5ef1 9
Wolfgang Betz 10:1a612c2e4a85 10 events::EventQueue I2S::i2s_bh_queue;
Wolfgang Betz 0:752e74bf5ef1 11
Wolfgang Betz 10:1a612c2e4a85 12 void I2S::lock() {
Wolfgang Betz 10:1a612c2e4a85 13 #if defined(NDEBUG) || !defined(MBED_CONF_RTOS_PRESENT)
Wolfgang Betz 10:1a612c2e4a85 14 _mutex->lock(); // intentional class level lock!
Wolfgang Betz 0:752e74bf5ef1 15 #else
Wolfgang Betz 10:1a612c2e4a85 16 osStatus ret = _mutex->lock(); // intentional class level lock!
Wolfgang Betz 10:1a612c2e4a85 17 MBED_ASSERT(ret == osOK);
Wolfgang Betz 0:752e74bf5ef1 18 #endif
Wolfgang Betz 10:1a612c2e4a85 19 }
Wolfgang Betz 10:1a612c2e4a85 20
Wolfgang Betz 10:1a612c2e4a85 21 void I2S::unlock() {
Wolfgang Betz 10:1a612c2e4a85 22 #if defined(NDEBUG) || !defined(MBED_CONF_RTOS_PRESENT)
Wolfgang Betz 10:1a612c2e4a85 23 _mutex->unlock(); // intentional class level lock!
Wolfgang Betz 10:1a612c2e4a85 24 #else
Wolfgang Betz 10:1a612c2e4a85 25 osStatus ret = _mutex->unlock(); // intentional class level lock!
Wolfgang Betz 10:1a612c2e4a85 26 MBED_ASSERT(ret == osOK);
Wolfgang Betz 10:1a612c2e4a85 27 #endif
Wolfgang Betz 10:1a612c2e4a85 28 }
Wolfgang Betz 0:752e74bf5ef1 29
Wolfgang Betz 10:1a612c2e4a85 30 I2S::I2S(PinName dpin, PinName clk, PinName wsel, PinName fdpin, PinName mck) :
Wolfgang Betz 16:04e1abb4cca3 31 _i2s(),
Wolfgang Betz 10:1a612c2e4a85 32 _irq_tx(this), _irq_rx(this),
Wolfgang Betz 10:1a612c2e4a85 33 _priority(MEDIUM),
Wolfgang Betz 10:1a612c2e4a85 34 _dbits(16),
Wolfgang Betz 10:1a612c2e4a85 35 _fbits(16),
Wolfgang Betz 10:1a612c2e4a85 36 _polarity(0),
Wolfgang Betz 10:1a612c2e4a85 37 _protocol(PHILIPS),
Wolfgang Betz 10:1a612c2e4a85 38 _mode(MASTER_TX),
Wolfgang Betz 10:1a612c2e4a85 39 _circular(false),
Wolfgang Betz 10:1a612c2e4a85 40 _hz(44100) {
Wolfgang Betz 10:1a612c2e4a85 41 lock();
Wolfgang Betz 10:1a612c2e4a85 42 /* Init instance */
Wolfgang Betz 10:1a612c2e4a85 43 i2s_init(&_i2s, dpin, clk, wsel, fdpin, mck, _mode);
Wolfgang Betz 10:1a612c2e4a85 44 acquire();
Wolfgang Betz 10:1a612c2e4a85 45 unlock();
Wolfgang Betz 10:1a612c2e4a85 46 }
Wolfgang Betz 0:752e74bf5ef1 47
Wolfgang Betz 10:1a612c2e4a85 48 int I2S::format(int dbits, int fbits, int polarity) {
Wolfgang Betz 10:1a612c2e4a85 49 lock();
Wolfgang Betz 10:1a612c2e4a85 50 if (i2s_active(&_i2s)) {
Wolfgang Betz 9:c4c2240e06d6 51 unlock();
Wolfgang Betz 10:1a612c2e4a85 52 return -1;
Wolfgang Betz 0:752e74bf5ef1 53 }
Wolfgang Betz 10:1a612c2e4a85 54 _dbits = dbits;
Wolfgang Betz 10:1a612c2e4a85 55 _fbits = fbits;
Wolfgang Betz 10:1a612c2e4a85 56 _polarity = polarity;
Wolfgang Betz 10:1a612c2e4a85 57 I2S::_owner = NULL; // Not that elegant, but works. rmeyer
Wolfgang Betz 10:1a612c2e4a85 58 acquire();
Wolfgang Betz 10:1a612c2e4a85 59 unlock();
Wolfgang Betz 10:1a612c2e4a85 60 return 0;
Wolfgang Betz 10:1a612c2e4a85 61 }
Wolfgang Betz 0:752e74bf5ef1 62
Wolfgang Betz 10:1a612c2e4a85 63 int I2S::audio_frequency(unsigned int hz) {
Wolfgang Betz 10:1a612c2e4a85 64 lock();
Wolfgang Betz 10:1a612c2e4a85 65 if (i2s_active(&_i2s)) {
Wolfgang Betz 9:c4c2240e06d6 66 unlock();
Wolfgang Betz 10:1a612c2e4a85 67 return -1;
Wolfgang Betz 0:752e74bf5ef1 68 }
Wolfgang Betz 10:1a612c2e4a85 69 _hz = hz;
Wolfgang Betz 10:1a612c2e4a85 70 I2S::_owner = NULL; // Not that elegant, but works. rmeyer
Wolfgang Betz 10:1a612c2e4a85 71 acquire();
Wolfgang Betz 10:1a612c2e4a85 72 unlock();
Wolfgang Betz 10:1a612c2e4a85 73 return 0;
Wolfgang Betz 10:1a612c2e4a85 74 }
Wolfgang Betz 0:752e74bf5ef1 75
Wolfgang Betz 10:1a612c2e4a85 76 int I2S::set_protocol(i2s_bitorder_t protocol) {
Wolfgang Betz 10:1a612c2e4a85 77 lock();
Wolfgang Betz 10:1a612c2e4a85 78 if (i2s_active(&_i2s)) {
Wolfgang Betz 9:c4c2240e06d6 79 unlock();
Wolfgang Betz 10:1a612c2e4a85 80 return -1;
Wolfgang Betz 0:752e74bf5ef1 81 }
Wolfgang Betz 10:1a612c2e4a85 82 _protocol = protocol;
Wolfgang Betz 10:1a612c2e4a85 83 I2S::_owner = NULL; // Not that elegant, but works. rmeyer
Wolfgang Betz 10:1a612c2e4a85 84 acquire();
Wolfgang Betz 10:1a612c2e4a85 85 unlock();
Wolfgang Betz 10:1a612c2e4a85 86 return 0;
Wolfgang Betz 10:1a612c2e4a85 87 }
Wolfgang Betz 0:752e74bf5ef1 88
Wolfgang Betz 10:1a612c2e4a85 89 int I2S::set_mode(i2s_mode_t mode, bool circular) {
Wolfgang Betz 10:1a612c2e4a85 90 lock();
Wolfgang Betz 10:1a612c2e4a85 91 if (i2s_active(&_i2s)) {
Wolfgang Betz 9:c4c2240e06d6 92 unlock();
Wolfgang Betz 10:1a612c2e4a85 93 return -1;
Wolfgang Betz 10:1a612c2e4a85 94 }
Wolfgang Betz 10:1a612c2e4a85 95 _mode = mode;
Wolfgang Betz 10:1a612c2e4a85 96 _circular = circular;
Wolfgang Betz 10:1a612c2e4a85 97 I2S::_owner = NULL; // Not that elegant, but works. rmeyer
Wolfgang Betz 10:1a612c2e4a85 98 acquire();
Wolfgang Betz 10:1a612c2e4a85 99 unlock();
Wolfgang Betz 10:1a612c2e4a85 100 return 0;
Wolfgang Betz 10:1a612c2e4a85 101 }
Wolfgang Betz 10:1a612c2e4a85 102
Wolfgang Betz 10:1a612c2e4a85 103 int I2S::harmonize(I2S &dev_i2s_1, I2S &dev_i2s_2) {
Wolfgang Betz 10:1a612c2e4a85 104 dev_i2s_1.lock();
Wolfgang Betz 10:1a612c2e4a85 105 if (i2s_active(&dev_i2s_1._i2s)) {
Wolfgang Betz 10:1a612c2e4a85 106 dev_i2s_1.unlock();
Wolfgang Betz 10:1a612c2e4a85 107 return -1;
Wolfgang Betz 0:752e74bf5ef1 108 }
Wolfgang Betz 9:c4c2240e06d6 109
Wolfgang Betz 10:1a612c2e4a85 110 dev_i2s_2.lock();
Wolfgang Betz 10:1a612c2e4a85 111 if (i2s_active(&dev_i2s_2._i2s)) {
Wolfgang Betz 11:50562a5f8a93 112 dev_i2s_2.unlock();
Wolfgang Betz 9:c4c2240e06d6 113 dev_i2s_1.unlock();
Wolfgang Betz 10:1a612c2e4a85 114 return -1;
Wolfgang Betz 9:c4c2240e06d6 115 }
Wolfgang Betz 9:c4c2240e06d6 116
Wolfgang Betz 10:1a612c2e4a85 117 uint32_t hz1 = dev_i2s_1._hz;
Wolfgang Betz 10:1a612c2e4a85 118 uint32_t hz2 = dev_i2s_2._hz;
Wolfgang Betz 10:1a612c2e4a85 119 int8_t ret = i2s_harmonize(&dev_i2s_1._i2s, &hz1, &dev_i2s_2._i2s, &hz2);
Wolfgang Betz 0:752e74bf5ef1 120
Wolfgang Betz 10:1a612c2e4a85 121 if(ret == 0) {
Wolfgang Betz 10:1a612c2e4a85 122 dev_i2s_1.audio_frequency(hz1);
Wolfgang Betz 10:1a612c2e4a85 123 dev_i2s_2.audio_frequency(hz2);
Wolfgang Betz 9:c4c2240e06d6 124 }
Wolfgang Betz 0:752e74bf5ef1 125
Wolfgang Betz 10:1a612c2e4a85 126 dev_i2s_2.unlock();
Wolfgang Betz 10:1a612c2e4a85 127 dev_i2s_1.unlock();
Wolfgang Betz 10:1a612c2e4a85 128
Wolfgang Betz 10:1a612c2e4a85 129 return ret;
Wolfgang Betz 10:1a612c2e4a85 130 }
Wolfgang Betz 10:1a612c2e4a85 131
Wolfgang Betz 10:1a612c2e4a85 132 void I2S::abort_transfer()
Wolfgang Betz 10:1a612c2e4a85 133 {
Wolfgang Betz 10:1a612c2e4a85 134 lock();
Wolfgang Betz 10:1a612c2e4a85 135 i2s_abort_asynch(&_i2s);
Wolfgang Betz 10:1a612c2e4a85 136 #if TRANSACTION_QUEUE_SIZE_I2S
Wolfgang Betz 10:1a612c2e4a85 137 dequeue_transaction();
Wolfgang Betz 10:1a612c2e4a85 138 #endif
Wolfgang Betz 10:1a612c2e4a85 139 unlock();
Wolfgang Betz 10:1a612c2e4a85 140 }
Wolfgang Betz 10:1a612c2e4a85 141
Wolfgang Betz 0:752e74bf5ef1 142
Wolfgang Betz 10:1a612c2e4a85 143 void I2S::clear_transfer_buffer()
Wolfgang Betz 10:1a612c2e4a85 144 {
Wolfgang Betz 10:1a612c2e4a85 145 #if TRANSACTION_QUEUE_SIZE_I2S
Wolfgang Betz 10:1a612c2e4a85 146 lock();
Wolfgang Betz 10:1a612c2e4a85 147 _transaction_buffer.reset();
Wolfgang Betz 10:1a612c2e4a85 148 unlock();
Wolfgang Betz 10:1a612c2e4a85 149 #endif
Wolfgang Betz 10:1a612c2e4a85 150 }
Wolfgang Betz 0:752e74bf5ef1 151
Wolfgang Betz 10:1a612c2e4a85 152 void I2S::abort_all_transfers()
Wolfgang Betz 10:1a612c2e4a85 153 {
Wolfgang Betz 10:1a612c2e4a85 154 lock();
Wolfgang Betz 10:1a612c2e4a85 155 clear_transfer_buffer();
Wolfgang Betz 10:1a612c2e4a85 156 abort_transfer();
Wolfgang Betz 10:1a612c2e4a85 157 unlock();
Wolfgang Betz 10:1a612c2e4a85 158 }
Wolfgang Betz 10:1a612c2e4a85 159
Wolfgang Betz 10:1a612c2e4a85 160 int I2S::get_transfer_status()
Wolfgang Betz 10:1a612c2e4a85 161 {
Wolfgang Betz 10:1a612c2e4a85 162 lock();
Wolfgang Betz 10:1a612c2e4a85 163 if (i2s_active(&_i2s)) {
Wolfgang Betz 9:c4c2240e06d6 164 unlock();
Wolfgang Betz 10:1a612c2e4a85 165 return -1;
Wolfgang Betz 0:752e74bf5ef1 166 }
Wolfgang Betz 10:1a612c2e4a85 167 unlock();
Wolfgang Betz 10:1a612c2e4a85 168 return 0;
Wolfgang Betz 10:1a612c2e4a85 169 }
Wolfgang Betz 0:752e74bf5ef1 170
Wolfgang Betz 10:1a612c2e4a85 171 unsigned int I2S::get_module()
Wolfgang Betz 10:1a612c2e4a85 172 {
Wolfgang Betz 10:1a612c2e4a85 173 return i2s_get_module(&_i2s);
Wolfgang Betz 10:1a612c2e4a85 174 }
Wolfgang Betz 0:752e74bf5ef1 175
Wolfgang Betz 10:1a612c2e4a85 176 int I2S::set_dma_priority(i2s_dma_prio_t prio)
Wolfgang Betz 10:1a612c2e4a85 177 {
Wolfgang Betz 10:1a612c2e4a85 178 lock();
Wolfgang Betz 10:1a612c2e4a85 179 if (i2s_active(&_i2s)) {
Wolfgang Betz 10:1a612c2e4a85 180 unlock();
Wolfgang Betz 10:1a612c2e4a85 181 return -1;
Wolfgang Betz 10:1a612c2e4a85 182 }
Wolfgang Betz 10:1a612c2e4a85 183 _priority = prio;
Wolfgang Betz 10:1a612c2e4a85 184 unlock();
Wolfgang Betz 10:1a612c2e4a85 185 return 0;
Wolfgang Betz 10:1a612c2e4a85 186 }
Wolfgang Betz 10:1a612c2e4a85 187
Wolfgang Betz 17:7a4a4631672c 188 int I2S::queue_transfer(const void *tx_buffer, int tx_length, void *rx_buffer, int rx_length, const mbed::event_callback_t& callback, int event)
Wolfgang Betz 10:1a612c2e4a85 189 { // betzw: MUST be called with lock held!
Wolfgang Betz 10:1a612c2e4a85 190 #if TRANSACTION_QUEUE_SIZE_I2S
Wolfgang Betz 17:7a4a4631672c 191 mbed::transaction_t t;
Wolfgang Betz 10:1a612c2e4a85 192
Wolfgang Betz 10:1a612c2e4a85 193 t.tx_buffer = const_cast<void *>(tx_buffer);
Wolfgang Betz 10:1a612c2e4a85 194 t.tx_length = tx_length;
Wolfgang Betz 10:1a612c2e4a85 195 t.rx_buffer = rx_buffer;
Wolfgang Betz 10:1a612c2e4a85 196 t.rx_length = rx_length;
Wolfgang Betz 10:1a612c2e4a85 197 t.event = event;
Wolfgang Betz 10:1a612c2e4a85 198 t.callback = callback;
Wolfgang Betz 10:1a612c2e4a85 199 t.width = 16;
Wolfgang Betz 17:7a4a4631672c 200 mbed::Transaction<I2S> transaction(this, t);
Wolfgang Betz 10:1a612c2e4a85 201 core_util_critical_section_enter();
Wolfgang Betz 10:1a612c2e4a85 202 if (_transaction_buffer.full()) {
Wolfgang Betz 9:c4c2240e06d6 203 core_util_critical_section_enter();
Wolfgang Betz 10:1a612c2e4a85 204 return -1; // the buffer is full
Wolfgang Betz 10:1a612c2e4a85 205 } else {
Wolfgang Betz 10:1a612c2e4a85 206 _transaction_buffer.push(transaction);
Wolfgang Betz 10:1a612c2e4a85 207 core_util_critical_section_exit();
Wolfgang Betz 10:1a612c2e4a85 208 return 0;
Wolfgang Betz 10:1a612c2e4a85 209 }
Wolfgang Betz 9:c4c2240e06d6 210 #else
Wolfgang Betz 10:1a612c2e4a85 211 return -1;
Wolfgang Betz 9:c4c2240e06d6 212 #endif
Wolfgang Betz 10:1a612c2e4a85 213 }
Wolfgang Betz 0:752e74bf5ef1 214
Wolfgang Betz 0:752e74bf5ef1 215
Wolfgang Betz 9:c4c2240e06d6 216 // ignore the fact that there are multiple physical i2s's, and always update if it wasn't us last
Wolfgang Betz 10:1a612c2e4a85 217 void I2S::acquire() { // betzw: MUST be called with lock held!
Wolfgang Betz 10:1a612c2e4a85 218 if (_owner != this) {
Wolfgang Betz 10:1a612c2e4a85 219 i2s_format(&_i2s, _dbits, _fbits, _polarity);
Wolfgang Betz 10:1a612c2e4a85 220 i2s_audio_frequency(&_i2s, _hz);
Wolfgang Betz 10:1a612c2e4a85 221 i2s_set_protocol(&_i2s, _protocol);
Wolfgang Betz 10:1a612c2e4a85 222 i2s_set_mode(&_i2s, _mode);
Wolfgang Betz 10:1a612c2e4a85 223 _owner = this;
Wolfgang Betz 0:752e74bf5ef1 224 }
Wolfgang Betz 10:1a612c2e4a85 225 }
Wolfgang Betz 0:752e74bf5ef1 226
Wolfgang Betz 10:1a612c2e4a85 227 void I2S::start_transfer(const void *tx_buffer, int tx_length, void *rx_buffer, int rx_length,
Wolfgang Betz 17:7a4a4631672c 228 const mbed::event_callback_t& callback, int event)
Wolfgang Betz 10:1a612c2e4a85 229 { // betzw: MUST be called with lock held!
Wolfgang Betz 10:1a612c2e4a85 230 acquire();
Wolfgang Betz 10:1a612c2e4a85 231 _callback = callback;
Wolfgang Betz 10:1a612c2e4a85 232 _irq_tx.callback(&I2S::irq_handler_asynch_tx);
Wolfgang Betz 10:1a612c2e4a85 233 _irq_rx.callback(&I2S::irq_handler_asynch_rx);
Wolfgang Betz 10:1a612c2e4a85 234 i2s_transfer(&_i2s,
Wolfgang Betz 10:1a612c2e4a85 235 const_cast<void *>(tx_buffer), tx_length, rx_buffer, rx_length,
Wolfgang Betz 10:1a612c2e4a85 236 _circular, _priority,
Wolfgang Betz 10:1a612c2e4a85 237 _irq_tx.entry(), _irq_rx.entry(),
Wolfgang Betz 10:1a612c2e4a85 238 event);
Wolfgang Betz 10:1a612c2e4a85 239 }
Wolfgang Betz 0:752e74bf5ef1 240
Wolfgang Betz 0:752e74bf5ef1 241 #if TRANSACTION_QUEUE_SIZE_I2S
Wolfgang Betz 0:752e74bf5ef1 242
Wolfgang Betz 17:7a4a4631672c 243 void I2S::start_transaction(mbed::transaction_t *data)
Wolfgang Betz 10:1a612c2e4a85 244 { // betzw: MUST be called with lock held!
Wolfgang Betz 10:1a612c2e4a85 245 start_transfer(data->tx_buffer, data->tx_length, data->rx_buffer, data->rx_length, data->callback, data->event);
Wolfgang Betz 10:1a612c2e4a85 246 }
Wolfgang Betz 0:752e74bf5ef1 247
Wolfgang Betz 10:1a612c2e4a85 248 void I2S::dequeue_transaction()
Wolfgang Betz 10:1a612c2e4a85 249 {
Wolfgang Betz 10:1a612c2e4a85 250 lock();
Wolfgang Betz 10:1a612c2e4a85 251 if (!i2s_active(&_i2s)) {
Wolfgang Betz 17:7a4a4631672c 252 mbed::Transaction<I2S> t;
Wolfgang Betz 10:1a612c2e4a85 253 if (_transaction_buffer.pop(t)) {
Wolfgang Betz 10:1a612c2e4a85 254 I2S* obj = t.get_object();
Wolfgang Betz 17:7a4a4631672c 255 mbed::transaction_t* data = t.get_transaction();
Wolfgang Betz 16:04e1abb4cca3 256 MBED_ASSERT(obj == this);
Wolfgang Betz 10:1a612c2e4a85 257 obj->start_transaction(data);
Wolfgang Betz 9:c4c2240e06d6 258 }
Wolfgang Betz 0:752e74bf5ef1 259 }
Wolfgang Betz 10:1a612c2e4a85 260 unlock();
Wolfgang Betz 10:1a612c2e4a85 261 }
Wolfgang Betz 0:752e74bf5ef1 262
Wolfgang Betz 0:752e74bf5ef1 263 #endif
Wolfgang Betz 0:752e74bf5ef1 264
Wolfgang Betz 10:1a612c2e4a85 265 void I2S::irq_handler_asynch_rx(void)
Wolfgang Betz 10:1a612c2e4a85 266 {
Wolfgang Betz 10:1a612c2e4a85 267 int event = i2s_irq_handler_asynch(&_i2s, I2S_RX_EVENT);
Wolfgang Betz 10:1a612c2e4a85 268 if (_callback && (event & I2S_EVENT_ALL)) {
Wolfgang Betz 10:1a612c2e4a85 269 I2sBhHandler::i2s_defer_function(_callback, event & I2S_EVENT_ALL);
Wolfgang Betz 10:1a612c2e4a85 270 }
Wolfgang Betz 0:752e74bf5ef1 271 #if TRANSACTION_QUEUE_SIZE_I2S
Wolfgang Betz 10:1a612c2e4a85 272 if (event & I2S_EVENT_INTERNAL_TRANSFER_COMPLETE) {
Wolfgang Betz 17:7a4a4631672c 273 I2sBhHandler::i2s_defer_function(mbed::Callback<void()>(this, &I2S::dequeue_transaction));
Wolfgang Betz 10:1a612c2e4a85 274 }
Wolfgang Betz 0:752e74bf5ef1 275 #endif
Wolfgang Betz 10:1a612c2e4a85 276 }
Davide Aliprandi 4:21603d68bcf7 277
Wolfgang Betz 10:1a612c2e4a85 278 void I2S::irq_handler_asynch_tx(void)
Wolfgang Betz 10:1a612c2e4a85 279 {
Wolfgang Betz 10:1a612c2e4a85 280 int event = i2s_irq_handler_asynch(&_i2s, I2S_TX_EVENT);
Wolfgang Betz 10:1a612c2e4a85 281 if (_callback && (event & I2S_EVENT_ALL)) {
Wolfgang Betz 10:1a612c2e4a85 282 I2sBhHandler::i2s_defer_function(_callback, event & I2S_EVENT_ALL);
Wolfgang Betz 10:1a612c2e4a85 283 }
Wolfgang Betz 9:c4c2240e06d6 284 #if TRANSACTION_QUEUE_SIZE_I2S
Wolfgang Betz 10:1a612c2e4a85 285 if (event & I2S_EVENT_INTERNAL_TRANSFER_COMPLETE) {
Wolfgang Betz 17:7a4a4631672c 286 I2sBhHandler::i2s_defer_function(mbed::Callback<void()>(this, &I2S::dequeue_transaction));
Wolfgang Betz 10:1a612c2e4a85 287 }
Wolfgang Betz 9:c4c2240e06d6 288 #endif
Wolfgang Betz 10:1a612c2e4a85 289 }
Davide Aliprandi 4:21603d68bcf7 290
Wolfgang Betz 17:7a4a4631672c 291 #endif // DEVICE_I2S