Steve Kim
mbed library sources(for async_print)
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Diff: api/I2CSlave.h
- Revision:
- 10:3bc89ef62ce7
- Parent:
- 9:0ce32e54c9a7
- Child:
- 13:0645d8841f51
--- a/api/I2CSlave.h Mon Jun 10 16:03:00 2013 +0100
+++ b/api/I2CSlave.h Fri Jun 14 17:49:17 2013 +0100
@@ -1,154 +1,154 @@
-/* mbed Microcontroller Library
- * Copyright (c) 2006-2013 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.
- */
-#ifndef MBED_I2C_SLAVE_H
-#define MBED_I2C_SLAVE_H
-
-#include "platform.h"
-
-#if DEVICE_I2CSLAVE
-
-#include "i2c_api.h"
-
-namespace mbed {
-
-/** An I2C Slave, used for communicating with an I2C Master device
- *
- * Example:
- * @code
- * // Simple I2C responder
- * #include <mbed.h>
- *
- * I2CSlave slave(p9, p10);
- *
- * int main() {
- * char buf[10];
- * char msg[] = "Slave!";
- *
- * slave.address(0xA0);
- * while (1) {
- * int i = slave.receive();
- * switch (i) {
- * case I2CSlave::ReadAddressed:
- * slave.write(msg, strlen(msg) + 1); // Includes null char
- * break;
- * case I2CSlave::WriteGeneral:
- * slave.read(buf, 10);
- * printf("Read G: %s\n", buf);
- * break;
- * case I2CSlave::WriteAddressed:
- * slave.read(buf, 10);
- * printf("Read A: %s\n", buf);
- * break;
- * }
- * for(int i = 0; i < 10; i++) buf[i] = 0; // Clear buffer
- * }
- * }
- * @endcode
- */
-class I2CSlave {
-
-public:
- enum RxStatus {
- NoData = 0,
- ReadAddressed = 1,
- WriteGeneral = 2,
- WriteAddressed = 3
- };
-
- /** Create an I2C Slave interface, connected to the specified pins.
- *
- * @param sda I2C data line pin
- * @param scl I2C clock line pin
- */
- I2CSlave(PinName sda, PinName scl);
-
- /** Set the frequency of the I2C interface
- *
- * @param hz The bus frequency in hertz
- */
- void frequency(int hz);
-
- /** Checks to see if this I2C Slave has been addressed.
- *
- * @returns
- * A status indicating if the device has been addressed, and how
- * - NoData - the slave has not been addressed
- * - ReadAddressed - the master has requested a read from this slave
- * - WriteAddressed - the master is writing to this slave
- * - WriteGeneral - the master is writing to all slave
- */
- int receive(void);
-
- /** Read from an I2C master.
- *
- * @param data pointer to the byte array to read data in to
- * @param length maximum number of bytes to read
- *
- * @returns
- * 0 on success,
- * non-0 otherwise
- */
- int read(char *data, int length);
-
- /** Read a single byte from an I2C master.
- *
- * @returns
- * the byte read
- */
- int read(void);
-
- /** Write to an I2C master.
- *
- * @param data pointer to the byte array to be transmitted
- * @param length the number of bytes to transmite
- *
- * @returns
- * 0 on success,
- * non-0 otherwise
- */
- int write(const char *data, int length);
-
- /** Write a single byte to an I2C master.
- *
- * @data the byte to write
- *
- * @returns
- * '1' if an ACK was received,
- * '0' otherwise
- */
- int write(int data);
-
- /** Sets the I2C slave address.
- *
- * @param address The address to set for the slave (ignoring the least
- * signifcant bit). If set to 0, the slave will only respond to the
- * general call address.
- */
- void address(int address);
-
- /** Reset the I2C slave back into the known ready receiving state.
- */
- void stop(void);
-
-protected:
- i2c_t _i2c;
-};
-
-} // namespace mbed
-
-#endif
-
-#endif
+/* mbed Microcontroller Library
+ * Copyright (c) 2006-2013 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.
+ */
+#ifndef MBED_I2C_SLAVE_H
+#define MBED_I2C_SLAVE_H
+
+#include "platform.h"
+
+#if DEVICE_I2CSLAVE
+
+#include "i2c_api.h"
+
+namespace mbed {
+
+/** An I2C Slave, used for communicating with an I2C Master device
+ *
+ * Example:
+ * @code
+ * // Simple I2C responder
+ * #include <mbed.h>
+ *
+ * I2CSlave slave(p9, p10);
+ *
+ * int main() {
+ * char buf[10];
+ * char msg[] = "Slave!";
+ *
+ * slave.address(0xA0);
+ * while (1) {
+ * int i = slave.receive();
+ * switch (i) {
+ * case I2CSlave::ReadAddressed:
+ * slave.write(msg, strlen(msg) + 1); // Includes null char
+ * break;
+ * case I2CSlave::WriteGeneral:
+ * slave.read(buf, 10);
+ * printf("Read G: %s\n", buf);
+ * break;
+ * case I2CSlave::WriteAddressed:
+ * slave.read(buf, 10);
+ * printf("Read A: %s\n", buf);
+ * break;
+ * }
+ * for(int i = 0; i < 10; i++) buf[i] = 0; // Clear buffer
+ * }
+ * }
+ * @endcode
+ */
+class I2CSlave {
+
+public:
+ enum RxStatus {
+ NoData = 0,
+ ReadAddressed = 1,
+ WriteGeneral = 2,
+ WriteAddressed = 3
+ };
+
+ /** Create an I2C Slave interface, connected to the specified pins.
+ *
+ * @param sda I2C data line pin
+ * @param scl I2C clock line pin
+ */
+ I2CSlave(PinName sda, PinName scl);
+
+ /** Set the frequency of the I2C interface
+ *
+ * @param hz The bus frequency in hertz
+ */
+ void frequency(int hz);
+
+ /** Checks to see if this I2C Slave has been addressed.
+ *
+ * @returns
+ * A status indicating if the device has been addressed, and how
+ * - NoData - the slave has not been addressed
+ * - ReadAddressed - the master has requested a read from this slave
+ * - WriteAddressed - the master is writing to this slave
+ * - WriteGeneral - the master is writing to all slave
+ */
+ int receive(void);
+
+ /** Read from an I2C master.
+ *
+ * @param data pointer to the byte array to read data in to
+ * @param length maximum number of bytes to read
+ *
+ * @returns
+ * 0 on success,
+ * non-0 otherwise
+ */
+ int read(char *data, int length);
+
+ /** Read a single byte from an I2C master.
+ *
+ * @returns
+ * the byte read
+ */
+ int read(void);
+
+ /** Write to an I2C master.
+ *
+ * @param data pointer to the byte array to be transmitted
+ * @param length the number of bytes to transmite
+ *
+ * @returns
+ * 0 on success,
+ * non-0 otherwise
+ */
+ int write(const char *data, int length);
+
+ /** Write a single byte to an I2C master.
+ *
+ * @data the byte to write
+ *
+ * @returns
+ * '1' if an ACK was received,
+ * '0' otherwise
+ */
+ int write(int data);
+
+ /** Sets the I2C slave address.
+ *
+ * @param address The address to set for the slave (ignoring the least
+ * signifcant bit). If set to 0, the slave will only respond to the
+ * general call address.
+ */
+ void address(int address);
+
+ /** Reset the I2C slave back into the known ready receiving state.
+ */
+ void stop(void);
+
+protected:
+ i2c_t _i2c;
+};
+
+} // namespace mbed
+
+#endif
+
+#endif