Quentin Roche / ST_I2S

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drivers/I2S.cpp@16:04e1abb4cca3, 2017-01-25 (annotated)

Committer:
Wolfgang Betz
Date:
Wed Jan 25 13:56:15 2017 +0100
Revision:
16:04e1abb4cca3
Parent:
11:50562a5f8a93
Child:
17:7a4a4631672c
Make locking function become protected

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 0:752e74bf5ef1 7 namespace mbed {
Wolfgang Betz 0:752e74bf5ef1 8
Wolfgang Betz 10:1a612c2e4a85 9 I2S* I2S::_owner = NULL;
Wolfgang Betz 10:1a612c2e4a85 10 SingletonPtr<PlatformMutex> I2S::_mutex; // intentional class level lock!
Wolfgang Betz 0:752e74bf5ef1 11
Wolfgang Betz 10:1a612c2e4a85 12 events::EventQueue I2S::i2s_bh_queue;
Wolfgang Betz 0:752e74bf5ef1 13
Wolfgang Betz 10:1a612c2e4a85 14 void I2S::lock() {
Wolfgang Betz 10:1a612c2e4a85 15 #if defined(NDEBUG) || !defined(MBED_CONF_RTOS_PRESENT)
Wolfgang Betz 10:1a612c2e4a85 16 _mutex->lock(); // intentional class level lock!
Wolfgang Betz 0:752e74bf5ef1 17 #else
Wolfgang Betz 10:1a612c2e4a85 18 osStatus ret = _mutex->lock(); // intentional class level lock!
Wolfgang Betz 10:1a612c2e4a85 19 MBED_ASSERT(ret == osOK);
Wolfgang Betz 0:752e74bf5ef1 20 #endif
Wolfgang Betz 10:1a612c2e4a85 21 }
Wolfgang Betz 10:1a612c2e4a85 22
Wolfgang Betz 10:1a612c2e4a85 23 void I2S::unlock() {
Wolfgang Betz 10:1a612c2e4a85 24 #if defined(NDEBUG) || !defined(MBED_CONF_RTOS_PRESENT)
Wolfgang Betz 10:1a612c2e4a85 25 _mutex->unlock(); // intentional class level lock!
Wolfgang Betz 10:1a612c2e4a85 26 #else
Wolfgang Betz 10:1a612c2e4a85 27 osStatus ret = _mutex->unlock(); // intentional class level lock!
Wolfgang Betz 10:1a612c2e4a85 28 MBED_ASSERT(ret == osOK);
Wolfgang Betz 10:1a612c2e4a85 29 #endif
Wolfgang Betz 10:1a612c2e4a85 30 }
Wolfgang Betz 0:752e74bf5ef1 31
Wolfgang Betz 10:1a612c2e4a85 32 I2S::I2S(PinName dpin, PinName clk, PinName wsel, PinName fdpin, PinName mck) :
Wolfgang Betz 16:04e1abb4cca3 33 _i2s(),
Wolfgang Betz 10:1a612c2e4a85 34 _irq_tx(this), _irq_rx(this),
Wolfgang Betz 10:1a612c2e4a85 35 _priority(MEDIUM),
Wolfgang Betz 10:1a612c2e4a85 36 _dbits(16),
Wolfgang Betz 10:1a612c2e4a85 37 _fbits(16),
Wolfgang Betz 10:1a612c2e4a85 38 _polarity(0),
Wolfgang Betz 10:1a612c2e4a85 39 _protocol(PHILIPS),
Wolfgang Betz 10:1a612c2e4a85 40 _mode(MASTER_TX),
Wolfgang Betz 10:1a612c2e4a85 41 _circular(false),
Wolfgang Betz 10:1a612c2e4a85 42 _hz(44100) {
Wolfgang Betz 10:1a612c2e4a85 43 lock();
Wolfgang Betz 10:1a612c2e4a85 44 /* Init instance */
Wolfgang Betz 10:1a612c2e4a85 45 i2s_init(&_i2s, dpin, clk, wsel, fdpin, mck, _mode);
Wolfgang Betz 10:1a612c2e4a85 46 acquire();
Wolfgang Betz 10:1a612c2e4a85 47 unlock();
Wolfgang Betz 10:1a612c2e4a85 48 }
Wolfgang Betz 0:752e74bf5ef1 49
Wolfgang Betz 10:1a612c2e4a85 50 int I2S::format(int dbits, int fbits, int polarity) {
Wolfgang Betz 10:1a612c2e4a85 51 lock();
Wolfgang Betz 10:1a612c2e4a85 52 if (i2s_active(&_i2s)) {
Wolfgang Betz 9:c4c2240e06d6 53 unlock();
Wolfgang Betz 10:1a612c2e4a85 54 return -1;
Wolfgang Betz 0:752e74bf5ef1 55 }
Wolfgang Betz 10:1a612c2e4a85 56 _dbits = dbits;
Wolfgang Betz 10:1a612c2e4a85 57 _fbits = fbits;
Wolfgang Betz 10:1a612c2e4a85 58 _polarity = polarity;
Wolfgang Betz 10:1a612c2e4a85 59 I2S::_owner = NULL; // Not that elegant, but works. rmeyer
Wolfgang Betz 10:1a612c2e4a85 60 acquire();
Wolfgang Betz 10:1a612c2e4a85 61 unlock();
Wolfgang Betz 10:1a612c2e4a85 62 return 0;
Wolfgang Betz 10:1a612c2e4a85 63 }
Wolfgang Betz 0:752e74bf5ef1 64
Wolfgang Betz 10:1a612c2e4a85 65 int I2S::audio_frequency(unsigned int hz) {
Wolfgang Betz 10:1a612c2e4a85 66 lock();
Wolfgang Betz 10:1a612c2e4a85 67 if (i2s_active(&_i2s)) {
Wolfgang Betz 9:c4c2240e06d6 68 unlock();
Wolfgang Betz 10:1a612c2e4a85 69 return -1;
Wolfgang Betz 0:752e74bf5ef1 70 }
Wolfgang Betz 10:1a612c2e4a85 71 _hz = hz;
Wolfgang Betz 10:1a612c2e4a85 72 I2S::_owner = NULL; // Not that elegant, but works. rmeyer
Wolfgang Betz 10:1a612c2e4a85 73 acquire();
Wolfgang Betz 10:1a612c2e4a85 74 unlock();
Wolfgang Betz 10:1a612c2e4a85 75 return 0;
Wolfgang Betz 10:1a612c2e4a85 76 }
Wolfgang Betz 0:752e74bf5ef1 77
Wolfgang Betz 10:1a612c2e4a85 78 int I2S::set_protocol(i2s_bitorder_t protocol) {
Wolfgang Betz 10:1a612c2e4a85 79 lock();
Wolfgang Betz 10:1a612c2e4a85 80 if (i2s_active(&_i2s)) {
Wolfgang Betz 9:c4c2240e06d6 81 unlock();
Wolfgang Betz 10:1a612c2e4a85 82 return -1;
Wolfgang Betz 0:752e74bf5ef1 83 }
Wolfgang Betz 10:1a612c2e4a85 84 _protocol = protocol;
Wolfgang Betz 10:1a612c2e4a85 85 I2S::_owner = NULL; // Not that elegant, but works. rmeyer
Wolfgang Betz 10:1a612c2e4a85 86 acquire();
Wolfgang Betz 10:1a612c2e4a85 87 unlock();
Wolfgang Betz 10:1a612c2e4a85 88 return 0;
Wolfgang Betz 10:1a612c2e4a85 89 }
Wolfgang Betz 0:752e74bf5ef1 90
Wolfgang Betz 10:1a612c2e4a85 91 int I2S::set_mode(i2s_mode_t mode, bool circular) {
Wolfgang Betz 10:1a612c2e4a85 92 lock();
Wolfgang Betz 10:1a612c2e4a85 93 if (i2s_active(&_i2s)) {
Wolfgang Betz 9:c4c2240e06d6 94 unlock();
Wolfgang Betz 10:1a612c2e4a85 95 return -1;
Wolfgang Betz 10:1a612c2e4a85 96 }
Wolfgang Betz 10:1a612c2e4a85 97 _mode = mode;
Wolfgang Betz 10:1a612c2e4a85 98 _circular = circular;
Wolfgang Betz 10:1a612c2e4a85 99 I2S::_owner = NULL; // Not that elegant, but works. rmeyer
Wolfgang Betz 10:1a612c2e4a85 100 acquire();
Wolfgang Betz 10:1a612c2e4a85 101 unlock();
Wolfgang Betz 10:1a612c2e4a85 102 return 0;
Wolfgang Betz 10:1a612c2e4a85 103 }
Wolfgang Betz 10:1a612c2e4a85 104
Wolfgang Betz 10:1a612c2e4a85 105 int I2S::harmonize(I2S &dev_i2s_1, I2S &dev_i2s_2) {
Wolfgang Betz 10:1a612c2e4a85 106 dev_i2s_1.lock();
Wolfgang Betz 10:1a612c2e4a85 107 if (i2s_active(&dev_i2s_1._i2s)) {
Wolfgang Betz 10:1a612c2e4a85 108 dev_i2s_1.unlock();
Wolfgang Betz 10:1a612c2e4a85 109 return -1;
Wolfgang Betz 0:752e74bf5ef1 110 }
Wolfgang Betz 9:c4c2240e06d6 111
Wolfgang Betz 10:1a612c2e4a85 112 dev_i2s_2.lock();
Wolfgang Betz 10:1a612c2e4a85 113 if (i2s_active(&dev_i2s_2._i2s)) {
Wolfgang Betz 11:50562a5f8a93 114 dev_i2s_2.unlock();
Wolfgang Betz 9:c4c2240e06d6 115 dev_i2s_1.unlock();
Wolfgang Betz 10:1a612c2e4a85 116 return -1;
Wolfgang Betz 9:c4c2240e06d6 117 }
Wolfgang Betz 9:c4c2240e06d6 118
Wolfgang Betz 10:1a612c2e4a85 119 uint32_t hz1 = dev_i2s_1._hz;
Wolfgang Betz 10:1a612c2e4a85 120 uint32_t hz2 = dev_i2s_2._hz;
Wolfgang Betz 10:1a612c2e4a85 121 int8_t ret = i2s_harmonize(&dev_i2s_1._i2s, &hz1, &dev_i2s_2._i2s, &hz2);
Wolfgang Betz 0:752e74bf5ef1 122
Wolfgang Betz 10:1a612c2e4a85 123 if(ret == 0) {
Wolfgang Betz 10:1a612c2e4a85 124 dev_i2s_1.audio_frequency(hz1);
Wolfgang Betz 10:1a612c2e4a85 125 dev_i2s_2.audio_frequency(hz2);
Wolfgang Betz 9:c4c2240e06d6 126 }
Wolfgang Betz 0:752e74bf5ef1 127
Wolfgang Betz 10:1a612c2e4a85 128 dev_i2s_2.unlock();
Wolfgang Betz 10:1a612c2e4a85 129 dev_i2s_1.unlock();
Wolfgang Betz 10:1a612c2e4a85 130
Wolfgang Betz 10:1a612c2e4a85 131 return ret;
Wolfgang Betz 10:1a612c2e4a85 132 }
Wolfgang Betz 10:1a612c2e4a85 133
Wolfgang Betz 10:1a612c2e4a85 134 void I2S::abort_transfer()
Wolfgang Betz 10:1a612c2e4a85 135 {
Wolfgang Betz 10:1a612c2e4a85 136 lock();
Wolfgang Betz 10:1a612c2e4a85 137 i2s_abort_asynch(&_i2s);
Wolfgang Betz 10:1a612c2e4a85 138 #if TRANSACTION_QUEUE_SIZE_I2S
Wolfgang Betz 10:1a612c2e4a85 139 dequeue_transaction();
Wolfgang Betz 10:1a612c2e4a85 140 #endif
Wolfgang Betz 10:1a612c2e4a85 141 unlock();
Wolfgang Betz 10:1a612c2e4a85 142 }
Wolfgang Betz 10:1a612c2e4a85 143
Wolfgang Betz 0:752e74bf5ef1 144
Wolfgang Betz 10:1a612c2e4a85 145 void I2S::clear_transfer_buffer()
Wolfgang Betz 10:1a612c2e4a85 146 {
Wolfgang Betz 10:1a612c2e4a85 147 #if TRANSACTION_QUEUE_SIZE_I2S
Wolfgang Betz 10:1a612c2e4a85 148 lock();
Wolfgang Betz 10:1a612c2e4a85 149 _transaction_buffer.reset();
Wolfgang Betz 10:1a612c2e4a85 150 unlock();
Wolfgang Betz 10:1a612c2e4a85 151 #endif
Wolfgang Betz 10:1a612c2e4a85 152 }
Wolfgang Betz 0:752e74bf5ef1 153
Wolfgang Betz 10:1a612c2e4a85 154 void I2S::abort_all_transfers()
Wolfgang Betz 10:1a612c2e4a85 155 {
Wolfgang Betz 10:1a612c2e4a85 156 lock();
Wolfgang Betz 10:1a612c2e4a85 157 clear_transfer_buffer();
Wolfgang Betz 10:1a612c2e4a85 158 abort_transfer();
Wolfgang Betz 10:1a612c2e4a85 159 unlock();
Wolfgang Betz 10:1a612c2e4a85 160 }
Wolfgang Betz 10:1a612c2e4a85 161
Wolfgang Betz 10:1a612c2e4a85 162 int I2S::get_transfer_status()
Wolfgang Betz 10:1a612c2e4a85 163 {
Wolfgang Betz 10:1a612c2e4a85 164 lock();
Wolfgang Betz 10:1a612c2e4a85 165 if (i2s_active(&_i2s)) {
Wolfgang Betz 9:c4c2240e06d6 166 unlock();
Wolfgang Betz 10:1a612c2e4a85 167 return -1;
Wolfgang Betz 0:752e74bf5ef1 168 }
Wolfgang Betz 10:1a612c2e4a85 169 unlock();
Wolfgang Betz 10:1a612c2e4a85 170 return 0;
Wolfgang Betz 10:1a612c2e4a85 171 }
Wolfgang Betz 0:752e74bf5ef1 172
Wolfgang Betz 10:1a612c2e4a85 173 unsigned int I2S::get_module()
Wolfgang Betz 10:1a612c2e4a85 174 {
Wolfgang Betz 10:1a612c2e4a85 175 return i2s_get_module(&_i2s);
Wolfgang Betz 10:1a612c2e4a85 176 }
Wolfgang Betz 0:752e74bf5ef1 177
Wolfgang Betz 10:1a612c2e4a85 178 int I2S::set_dma_priority(i2s_dma_prio_t prio)
Wolfgang Betz 10:1a612c2e4a85 179 {
Wolfgang Betz 10:1a612c2e4a85 180 lock();
Wolfgang Betz 10:1a612c2e4a85 181 if (i2s_active(&_i2s)) {
Wolfgang Betz 10:1a612c2e4a85 182 unlock();
Wolfgang Betz 10:1a612c2e4a85 183 return -1;
Wolfgang Betz 10:1a612c2e4a85 184 }
Wolfgang Betz 10:1a612c2e4a85 185 _priority = prio;
Wolfgang Betz 10:1a612c2e4a85 186 unlock();
Wolfgang Betz 10:1a612c2e4a85 187 return 0;
Wolfgang Betz 10:1a612c2e4a85 188 }
Wolfgang Betz 10:1a612c2e4a85 189
Wolfgang Betz 10:1a612c2e4a85 190 int I2S::queue_transfer(const void *tx_buffer, int tx_length, void *rx_buffer, int rx_length, const event_callback_t& callback, int event)
Wolfgang Betz 10:1a612c2e4a85 191 { // betzw: MUST be called with lock held!
Wolfgang Betz 10:1a612c2e4a85 192 #if TRANSACTION_QUEUE_SIZE_I2S
Wolfgang Betz 10:1a612c2e4a85 193 transaction_t t;
Wolfgang Betz 10:1a612c2e4a85 194
Wolfgang Betz 10:1a612c2e4a85 195 t.tx_buffer = const_cast<void *>(tx_buffer);
Wolfgang Betz 10:1a612c2e4a85 196 t.tx_length = tx_length;
Wolfgang Betz 10:1a612c2e4a85 197 t.rx_buffer = rx_buffer;
Wolfgang Betz 10:1a612c2e4a85 198 t.rx_length = rx_length;
Wolfgang Betz 10:1a612c2e4a85 199 t.event = event;
Wolfgang Betz 10:1a612c2e4a85 200 t.callback = callback;
Wolfgang Betz 10:1a612c2e4a85 201 t.width = 16;
Wolfgang Betz 10:1a612c2e4a85 202 Transaction<I2S> transaction(this, t);
Wolfgang Betz 10:1a612c2e4a85 203 core_util_critical_section_enter();
Wolfgang Betz 10:1a612c2e4a85 204 if (_transaction_buffer.full()) {
Wolfgang Betz 9:c4c2240e06d6 205 core_util_critical_section_enter();
Wolfgang Betz 10:1a612c2e4a85 206 return -1; // the buffer is full
Wolfgang Betz 10:1a612c2e4a85 207 } else {
Wolfgang Betz 10:1a612c2e4a85 208 _transaction_buffer.push(transaction);
Wolfgang Betz 10:1a612c2e4a85 209 core_util_critical_section_exit();
Wolfgang Betz 10:1a612c2e4a85 210 return 0;
Wolfgang Betz 10:1a612c2e4a85 211 }
Wolfgang Betz 9:c4c2240e06d6 212 #else
Wolfgang Betz 10:1a612c2e4a85 213 return -1;
Wolfgang Betz 9:c4c2240e06d6 214 #endif
Wolfgang Betz 10:1a612c2e4a85 215 }
Wolfgang Betz 0:752e74bf5ef1 216
Wolfgang Betz 0:752e74bf5ef1 217
Wolfgang Betz 9:c4c2240e06d6 218 // ignore the fact that there are multiple physical i2s's, and always update if it wasn't us last
Wolfgang Betz 10:1a612c2e4a85 219 void I2S::acquire() { // betzw: MUST be called with lock held!
Wolfgang Betz 10:1a612c2e4a85 220 if (_owner != this) {
Wolfgang Betz 10:1a612c2e4a85 221 i2s_format(&_i2s, _dbits, _fbits, _polarity);
Wolfgang Betz 10:1a612c2e4a85 222 i2s_audio_frequency(&_i2s, _hz);
Wolfgang Betz 10:1a612c2e4a85 223 i2s_set_protocol(&_i2s, _protocol);
Wolfgang Betz 10:1a612c2e4a85 224 i2s_set_mode(&_i2s, _mode);
Wolfgang Betz 10:1a612c2e4a85 225 _owner = this;
Wolfgang Betz 0:752e74bf5ef1 226 }
Wolfgang Betz 10:1a612c2e4a85 227 }
Wolfgang Betz 0:752e74bf5ef1 228
Wolfgang Betz 10:1a612c2e4a85 229 void I2S::start_transfer(const void *tx_buffer, int tx_length, void *rx_buffer, int rx_length,
Wolfgang Betz 10:1a612c2e4a85 230 const event_callback_t& callback, int event)
Wolfgang Betz 10:1a612c2e4a85 231 { // betzw: MUST be called with lock held!
Wolfgang Betz 10:1a612c2e4a85 232 acquire();
Wolfgang Betz 10:1a612c2e4a85 233 _callback = callback;
Wolfgang Betz 10:1a612c2e4a85 234 _irq_tx.callback(&I2S::irq_handler_asynch_tx);
Wolfgang Betz 10:1a612c2e4a85 235 _irq_rx.callback(&I2S::irq_handler_asynch_rx);
Wolfgang Betz 10:1a612c2e4a85 236 i2s_transfer(&_i2s,
Wolfgang Betz 10:1a612c2e4a85 237 const_cast<void *>(tx_buffer), tx_length, rx_buffer, rx_length,
Wolfgang Betz 10:1a612c2e4a85 238 _circular, _priority,
Wolfgang Betz 10:1a612c2e4a85 239 _irq_tx.entry(), _irq_rx.entry(),
Wolfgang Betz 10:1a612c2e4a85 240 event);
Wolfgang Betz 10:1a612c2e4a85 241 }
Wolfgang Betz 0:752e74bf5ef1 242
Wolfgang Betz 0:752e74bf5ef1 243 #if TRANSACTION_QUEUE_SIZE_I2S
Wolfgang Betz 0:752e74bf5ef1 244
Wolfgang Betz 10:1a612c2e4a85 245 void I2S::start_transaction(transaction_t *data)
Wolfgang Betz 10:1a612c2e4a85 246 { // betzw: MUST be called with lock held!
Wolfgang Betz 10:1a612c2e4a85 247 start_transfer(data->tx_buffer, data->tx_length, data->rx_buffer, data->rx_length, data->callback, data->event);
Wolfgang Betz 10:1a612c2e4a85 248 }
Wolfgang Betz 0:752e74bf5ef1 249
Wolfgang Betz 10:1a612c2e4a85 250 void I2S::dequeue_transaction()
Wolfgang Betz 10:1a612c2e4a85 251 {
Wolfgang Betz 10:1a612c2e4a85 252 lock();
Wolfgang Betz 10:1a612c2e4a85 253 if (!i2s_active(&_i2s)) {
Wolfgang Betz 10:1a612c2e4a85 254 Transaction<I2S> t;
Wolfgang Betz 10:1a612c2e4a85 255 if (_transaction_buffer.pop(t)) {
Wolfgang Betz 10:1a612c2e4a85 256 I2S* obj = t.get_object();
Wolfgang Betz 10:1a612c2e4a85 257 transaction_t* data = t.get_transaction();
Wolfgang Betz 16:04e1abb4cca3 258 MBED_ASSERT(obj == this);
Wolfgang Betz 10:1a612c2e4a85 259 obj->start_transaction(data);
Wolfgang Betz 9:c4c2240e06d6 260 }
Wolfgang Betz 0:752e74bf5ef1 261 }
Wolfgang Betz 10:1a612c2e4a85 262 unlock();
Wolfgang Betz 10:1a612c2e4a85 263 }
Wolfgang Betz 0:752e74bf5ef1 264
Wolfgang Betz 0:752e74bf5ef1 265 #endif
Wolfgang Betz 0:752e74bf5ef1 266
Wolfgang Betz 10:1a612c2e4a85 267 void I2S::irq_handler_asynch_rx(void)
Wolfgang Betz 10:1a612c2e4a85 268 {
Wolfgang Betz 10:1a612c2e4a85 269 int event = i2s_irq_handler_asynch(&_i2s, I2S_RX_EVENT);
Wolfgang Betz 10:1a612c2e4a85 270 if (_callback && (event & I2S_EVENT_ALL)) {
Wolfgang Betz 10:1a612c2e4a85 271 I2sBhHandler::i2s_defer_function(_callback, event & I2S_EVENT_ALL);
Wolfgang Betz 10:1a612c2e4a85 272 }
Wolfgang Betz 0:752e74bf5ef1 273 #if TRANSACTION_QUEUE_SIZE_I2S
Wolfgang Betz 10:1a612c2e4a85 274 if (event & I2S_EVENT_INTERNAL_TRANSFER_COMPLETE) {
Wolfgang Betz 10:1a612c2e4a85 275 I2sBhHandler::i2s_defer_function(Callback<void()>(this, &I2S::dequeue_transaction));
Wolfgang Betz 10:1a612c2e4a85 276 }
Wolfgang Betz 0:752e74bf5ef1 277 #endif
Wolfgang Betz 10:1a612c2e4a85 278 }
Davide Aliprandi 4:21603d68bcf7 279
Wolfgang Betz 10:1a612c2e4a85 280 void I2S::irq_handler_asynch_tx(void)
Wolfgang Betz 10:1a612c2e4a85 281 {
Wolfgang Betz 10:1a612c2e4a85 282 int event = i2s_irq_handler_asynch(&_i2s, I2S_TX_EVENT);
Wolfgang Betz 10:1a612c2e4a85 283 if (_callback && (event & I2S_EVENT_ALL)) {
Wolfgang Betz 10:1a612c2e4a85 284 I2sBhHandler::i2s_defer_function(_callback, event & I2S_EVENT_ALL);
Wolfgang Betz 10:1a612c2e4a85 285 }
Wolfgang Betz 9:c4c2240e06d6 286 #if TRANSACTION_QUEUE_SIZE_I2S
Wolfgang Betz 10:1a612c2e4a85 287 if (event & I2S_EVENT_INTERNAL_TRANSFER_COMPLETE) {
Wolfgang Betz 10:1a612c2e4a85 288 I2sBhHandler::i2s_defer_function(Callback<void()>(this, &I2S::dequeue_transaction));
Wolfgang Betz 10:1a612c2e4a85 289 }
Wolfgang Betz 9:c4c2240e06d6 290 #endif
Wolfgang Betz 10:1a612c2e4a85 291 }
Davide Aliprandi 4:21603d68bcf7 292
Wolfgang Betz 0:752e74bf5ef1 293 } // namespace mbed
Wolfgang Betz 0:752e74bf5ef1 294
Wolfgang Betz 0:752e74bf5ef1 295 #endif