Diff: mbed-src/common/I2C.cpp

Revision:

1:9d3b497333c0

Parent:

0:638edba3adf6

--- a/mbed-src/common/I2C.cpp	Mon Jan 11 02:32:24 2016 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,128 +0,0 @@
-/* mbed Microcontroller Library
- * Copyright (c) 2006-2015 ARM Limited
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-#include "I2C.h"
-
-#if DEVICE_I2C
-
-namespace mbed {
-
-I2C *I2C::_owner = NULL;
-
-I2C::I2C(PinName sda, PinName scl) :
-#if DEVICE_I2C_ASYNCH
-                                     _irq(this), _usage(DMA_USAGE_NEVER),
-#endif
-                                      _i2c(), _hz(100000) {
-    // The init function also set the frequency to 100000
-    i2c_init(&_i2c, sda, scl);
-
-    // Used to avoid unnecessary frequency updates
-    _owner = this;
-}
-
-void I2C::frequency(int hz) {
-    _hz = hz;
-
-    // We want to update the frequency even if we are already the bus owners
-    i2c_frequency(&_i2c, _hz);
-
-    // Updating the frequency of the bus we become the owners of it
-    _owner = this;
-}
-
-void I2C::aquire() {
-    if (_owner != this) {
-        i2c_frequency(&_i2c, _hz);
-        _owner = this;
-    }
-}
-
-// write - Master Transmitter Mode
-int I2C::write(int address, const char* data, int length, bool repeated) {
-    aquire();
-
-    int stop = (repeated) ? 0 : 1;
-    int written = i2c_write(&_i2c, address, data, length, stop);
-
-    return length != written;
-}
-
-int I2C::write(int data) {
-    return i2c_byte_write(&_i2c, data);
-}
-
-// read - Master Reciever Mode
-int I2C::read(int address, char* data, int length, bool repeated) {
-    aquire();
-
-    int stop = (repeated) ? 0 : 1;
-    int read = i2c_read(&_i2c, address, data, length, stop);
-
-    return length != read;
-}
-
-int I2C::read(int ack) {
-    if (ack) {
-        return i2c_byte_read(&_i2c, 0);
-    } else {
-        return i2c_byte_read(&_i2c, 1);
-    }
-}
-
-void I2C::start(void) {
-    i2c_start(&_i2c);
-}
-
-void I2C::stop(void) {
-    i2c_stop(&_i2c);
-}
-
-#if DEVICE_I2C_ASYNCH
-
-int I2C::transfer(int address, const char *tx_buffer, int tx_length, char *rx_buffer, int rx_length, const event_callback_t& callback, int event, bool repeated)
-{
-    if (i2c_active(&_i2c)) {
-        return -1; // transaction ongoing
-    }
-    aquire();
-
-    _callback = callback;
-    int stop = (repeated) ? 0 : 1;
-    _irq.callback(&I2C::irq_handler_asynch);
-    i2c_transfer_asynch(&_i2c, (void *)tx_buffer, tx_length, (void *)rx_buffer, rx_length, address, stop, _irq.entry(), event, _usage);
-    return 0;
-}
-
-void I2C::abort_transfer(void)
-{
-    i2c_abort_asynch(&_i2c);
-}
-
-void I2C::irq_handler_asynch(void)
-{
-    int event = i2c_irq_handler_asynch(&_i2c);
-    if (_callback && event) {
-        _callback.call(event);
-    }
-
-}
-
-
-#endif
-
-} // namespace mbed
-
-#endif