mbed library sources
Dependents: Encrypted my_mbed lklk CyaSSL_DTLS_Cellular ... more
Superseded
This library was superseded by mbed-dev - https://os.mbed.com/users/mbed_official/code/mbed-dev/.
Development branch of the mbed library sources. This library is kept in synch with the latest changes from the mbed SDK and it is not guaranteed to work.
If you are looking for a stable and tested release, please import one of the official mbed library releases:
Import librarymbed
The official Mbed 2 C/C++ SDK provides the software platform and libraries to build your applications.
Diff: common/SerialBase.cpp
- Revision:
- 525:c320967f86b9
- Parent:
- 212:34d62c0b2af6
- Child:
- 563:536c9fb088a0
diff -r c0134becc221 -r c320967f86b9 common/SerialBase.cpp --- a/common/SerialBase.cpp Mon Apr 27 09:45:08 2015 +0100 +++ b/common/SerialBase.cpp Tue Apr 28 11:45:12 2015 +0100 @@ -20,7 +20,12 @@ namespace mbed { -SerialBase::SerialBase(PinName tx, PinName rx) : _serial(), _baud(9600) { +SerialBase::SerialBase(PinName tx, PinName rx) : +#if DEVICE_SERIAL_ASYNCH + _thunk_irq(this), _tx_usage(DMA_USAGE_NEVER), + _rx_usage(DMA_USAGE_NEVER), +#endif + _serial(), _baud(9600) { serial_init(&_serial, tx, rx); serial_irq_handler(&_serial, SerialBase::_irq_handler, (uint32_t)this); } @@ -103,6 +108,105 @@ } #endif +#if DEVICE_SERIAL_ASYNCH + +int SerialBase::write(uint8_t *buffer, int length, const event_callback_t& callback, int event) +{ + if (serial_tx_active(&_serial)) { + return -1; // transaction ongoing + } + start_write((void *)buffer, length, 8, callback, event); + return 0; +} + +int SerialBase::write(uint16_t *buffer, int length, const event_callback_t& callback, int event) +{ + if (serial_tx_active(&_serial)) { + return -1; // transaction ongoing + } + start_write((void *)buffer, length, 16, callback, event); + return 0; +} + +void SerialBase::start_write(void *buffer, int buffer_size, char buffer_width, const event_callback_t& callback, int event) +{ + _tx_callback = callback; + + _thunk_irq.callback(&SerialBase::interrupt_handler_asynch); + serial_tx_asynch(&_serial, buffer, buffer_size, buffer_width, _thunk_irq.entry(), event, _tx_usage); +} + +void SerialBase::abort_write(void) +{ + serial_tx_abort_asynch(&_serial); +} + +void SerialBase::abort_read(void) +{ + serial_rx_abort_asynch(&_serial); +} + +int SerialBase::set_dma_usage_tx(DMAUsage usage) +{ + if (serial_tx_active(&_serial)) { + return -1; + } + _tx_usage = usage; + return 0; +} + +int SerialBase::set_dma_usage_rx(DMAUsage usage) +{ + if (serial_tx_active(&_serial)) { + return -1; + } + _rx_usage = usage; + return 0; +} + +int SerialBase::read(uint8_t *buffer, int length, const event_callback_t& callback, int event, unsigned char char_match) +{ + if (serial_rx_active(&_serial)) { + return -1; // transaction ongoing + } + start_read((void*)buffer, length, 8, callback, event, char_match); + return 0; +} + + +int SerialBase::read(uint16_t *buffer, int length, const event_callback_t& callback, int event, unsigned char char_match) +{ + if (serial_rx_active(&_serial)) { + return -1; // transaction ongoing + } + start_read((void*)buffer, length, 16, callback, event, char_match); + return 0; +} + + +void SerialBase::start_read(void *buffer, int buffer_size, char buffer_width, const event_callback_t& callback, int event, unsigned char char_match) +{ + _rx_callback = callback; + _thunk_irq.callback(&SerialBase::interrupt_handler_asynch); + serial_rx_asynch(&_serial, buffer, buffer_size, buffer_width, _thunk_irq.entry(), event, char_match, _rx_usage); +} + +void SerialBase::interrupt_handler_asynch(void) +{ + int event = serial_irq_handler_asynch(&_serial); + int rx_event = event & SERIAL_EVENT_RX_MASK; + if (_rx_callback && rx_event) { + _rx_callback.call(rx_event); + } + + int tx_event = event & SERIAL_EVENT_TX_MASK; + if (_tx_callback && tx_event) { + _tx_callback.call(tx_event); + } +} + +#endif + } // namespace mbed #endif