diff options
Diffstat (limited to 'libraries/Wire')
| -rw-r--r-- | libraries/Wire/HardWire.cpp | 66 | ||||
| -rw-r--r-- | libraries/Wire/HardWire.h | 69 | ||||
| -rw-r--r-- | libraries/Wire/Wire.cpp | 182 | ||||
| -rw-r--r-- | libraries/Wire/Wire.h | 136 | ||||
| -rw-r--r-- | libraries/Wire/WireBase.cpp | 140 | ||||
| -rw-r--r-- | libraries/Wire/WireBase.h | 143 | ||||
| -rw-r--r-- | libraries/Wire/rules.mk | 29 |
7 files changed, 765 insertions, 0 deletions
diff --git a/libraries/Wire/HardWire.cpp b/libraries/Wire/HardWire.cpp new file mode 100644 index 0000000..c2412f1 --- /dev/null +++ b/libraries/Wire/HardWire.cpp @@ -0,0 +1,66 @@ +/****************************************************************************** + * The MIT License + * + * Copyright (c) 2010 LeafLabs LLC. + * + * Permission is hereby granted, free of charge, to any person + * obtaining a copy of this software and associated documentation + * files (the "Software"), to deal in the Software without + * restriction, including without limitation the rights to use, copy, + * modify, merge, publish, distribute, sublicense, and/or sell copies + * of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + *****************************************************************************/ + +/** + * @file HardWire.cpp + * @author Trystan Jones <crenn6977@gmail.com> + * @brief Wire library, uses the hardware I2C available in the Maple to + * interact with I2C slave devices. + */ + +/* + * Library created by crenn to use the new WireBase system and allow Arduino + * users easy interaction with the I2C Hardware in a familiar method. + */ + +#include <Wire/HardWire.h> + +uint8 HardWire::process() { + int8 res = i2c_master_xfer(sel_hard, &itc_msg, 1, 0); + if (res != 0) { + i2c_disable(sel_hard); + i2c_master_enable(sel_hard, (I2C_BUS_RESET | dev_flags)); + } + return 0; +} + +// TODO: Add in Error Handling if devsel is out of range for other Maples +HardWire::HardWire(uint8 dev_sel, uint8 flags) { + if (dev_sel == 1) { + sel_hard = I2C1; + } else if (dev_sel == 2) { + sel_hard = I2C2; + } else { + ASSERT(1); + } + dev_flags=flags; + i2c_master_enable(sel_hard, flags); +} + +HardWire::~HardWire() { + i2c_disable(sel_hard); + sel_hard = 0; +} diff --git a/libraries/Wire/HardWire.h b/libraries/Wire/HardWire.h new file mode 100644 index 0000000..d6eb54a --- /dev/null +++ b/libraries/Wire/HardWire.h @@ -0,0 +1,69 @@ +/****************************************************************************** + * The MIT License + * + * Copyright (c) 2010 LeafLabs LLC. + * + * Permission is hereby granted, free of charge, to any person + * obtaining a copy of this software and associated documentation + * files (the "Software"), to deal in the Software without + * restriction, including without limitation the rights to use, copy, + * modify, merge, publish, distribute, sublicense, and/or sell copies + * of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + *****************************************************************************/ + +/** + * @file HardWire.h + * @author Trystan Jones <crenn6977@gmail.com> + * @brief Wire library, uses the hardware I2C available in the Maple to + * interact with I2C slave devices. + */ + +/* + * Library created by crenn to use the new WireBase system and allow Arduino + * users easy interaction with the I2C Hardware in a familiar method. + */ + +#ifndef _HARDWIRE_H_ +#define _HARDWIRE_H_ + +#include <Wire/WireBase.h> +#include <wirish/wirish.h> +#include <libmaple/i2c.h> + +class HardWire : public WireBase { +private: + i2c_dev* sel_hard; + uint8 dev_flags; +protected: + /* + * Processes the incoming I2C message defined by WireBase to the + * hardware. If an error occured, restart the I2C device. + */ + uint8 process(); +public: + /* + * Check if devsel is within range and enable selected I2C interface with + * passed flags + */ + HardWire(uint8, uint8 = 0); + + /* + * Disables the I2C device and remove the device address. + */ + ~HardWire(); +}; + +#endif // _HARDWIRE_H_ diff --git a/libraries/Wire/Wire.cpp b/libraries/Wire/Wire.cpp new file mode 100644 index 0000000..d646132 --- /dev/null +++ b/libraries/Wire/Wire.cpp @@ -0,0 +1,182 @@ +/****************************************************************************** + * The MIT License + * + * Copyright (c) 2010 LeafLabs LLC. + * + * Permission is hereby granted, free of charge, to any person + * obtaining a copy of this software and associated documentation + * files (the "Software"), to deal in the Software without + * restriction, including without limitation the rights to use, copy, + * modify, merge, publish, distribute, sublicense, and/or sell copies + * of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + *****************************************************************************/ + +/** + * @file Wire.cpp + * @author Trystan Jones <crenn6977@gmail.com> + * @brief Wire library, uses the WireBase to create the primary interface + * while keeping low level interactions invisible to the user. + */ + +/* + * Library updated by crenn to follow new Wire system. + * Code was derived from the original Wire for maple code by leaflabs and the + * modifications by gke and ala42. + */ + +#include <Wire/Wire.h> + +#define I2C_WRITE 0 +#define I2C_READ 1 + +/* low level conventions: + * - SDA/SCL idle high (expected high) + * - always start with i2c_delay rather than end + */ + +void TwoWire::set_scl(bool state) { + I2C_DELAY(this->i2c_delay); + digitalWrite(this->scl_pin,state); + //Allow for clock stretching - dangerous currently + if (state == HIGH) { + while(digitalRead(this->scl_pin) == 0); + } +} + +void TwoWire::set_sda(bool state) { + I2C_DELAY(this->i2c_delay); + digitalWrite(this->sda_pin, state); +} + +void TwoWire::i2c_start() { + set_sda(LOW); + set_scl(LOW); +} + +void TwoWire::i2c_stop() { + set_sda(LOW); + set_scl(HIGH); + set_sda(HIGH); +} + +bool TwoWire::i2c_get_ack() { + set_scl(LOW); + set_sda(HIGH); + set_scl(HIGH); + + bool ret = !digitalRead(this->sda_pin); + set_scl(LOW); + return ret; +} + +void TwoWire::i2c_send_ack() { + set_sda(LOW); + set_scl(HIGH); + set_scl(LOW); +} + +void TwoWire::i2c_send_nack() { + set_sda(HIGH); + set_scl(HIGH); + set_scl(LOW); +} + +uint8 TwoWire::i2c_shift_in() { + uint8 data = 0; + set_sda(HIGH); + + int i; + for (i = 0; i < 8; i++) { + set_scl(HIGH); + data |= digitalRead(this->sda_pin) << (7-i); + set_scl(LOW); + } + + return data; +} + +void TwoWire::i2c_shift_out(uint8 val) { + int i; + for (i = 0; i < 8; i++) { + set_sda(!!(val & (1 << (7 - i)) ) ); + set_scl(HIGH); + set_scl(LOW); + } +} + +uint8 TwoWire::process() { + itc_msg.xferred = 0; + + uint8 sla_addr = (itc_msg.addr << 1); + if (itc_msg.flags == I2C_MSG_READ) { + sla_addr |= I2C_READ; + } + i2c_start(); + // shift out the address we're transmitting to + i2c_shift_out(sla_addr); + if (!i2c_get_ack()) { + return ENACKADDR; + } + // Recieving + if (itc_msg.flags == I2C_MSG_READ) { + while (itc_msg.xferred < itc_msg.length) { + itc_msg.data[itc_msg.xferred++] = i2c_shift_in(); + if (itc_msg.xferred < itc_msg.length) { + i2c_send_ack(); + } else { + i2c_send_nack(); + } + } + } + // Sending + else { + for (uint8 i = 0; i < itc_msg.length; i++) { + i2c_shift_out(itc_msg.data[i]); + if (!i2c_get_ack()) { + return ENACKTRNS; + } + itc_msg.xferred++; + } + } + i2c_stop(); + return SUCCESS; +} + +// TODO: Add in Error Handling if pins is out of range for other Maples +// TODO: Make delays more capable +TwoWire::TwoWire(uint8 scl, uint8 sda, uint8 delay) : i2c_delay(delay) { + this->scl_pin=scl; + this->sda_pin=sda; +} + +void TwoWire::begin(uint8 self_addr) { + tx_buf_idx = 0; + tx_buf_overflow = false; + rx_buf_idx = 0; + rx_buf_len = 0; + pinMode(this->scl_pin, OUTPUT_OPEN_DRAIN); + pinMode(this->sda_pin, OUTPUT_OPEN_DRAIN); + set_scl(HIGH); + set_sda(HIGH); +} + +TwoWire::~TwoWire() { + this->scl_pin=0; + this->sda_pin=0; +} + +// Declare the instance that the users of the library can use +TwoWire Wire(SCL, SDA, SOFT_STANDARD); diff --git a/libraries/Wire/Wire.h b/libraries/Wire/Wire.h new file mode 100644 index 0000000..d455b11 --- /dev/null +++ b/libraries/Wire/Wire.h @@ -0,0 +1,136 @@ +/****************************************************************************** + * The MIT License + * + * Copyright (c) 2010 LeafLabs LLC. + * + * Permission is hereby granted, free of charge, to any person + * obtaining a copy of this software and associated documentation + * files (the "Software"), to deal in the Software without + * restriction, including without limitation the rights to use, copy, + * modify, merge, publish, distribute, sublicense, and/or sell copies + * of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + *****************************************************************************/ + +/** + * @file Wire.h + * @author Trystan Jones <crenn6977@gmail.com> + * @brief Wire library, uses the WireBase to create the primary interface + * while keeping low level interactions invisible to the user. + */ + +/* + * Library updated by crenn to follow new Wire system. + * Code was derived from the original Wire for maple code by leaflabs and the + * modifications by gke and ala42. + */ + +#ifndef _WIRE_H_ +#define _WIRE_H_ + +#include <Wire/WireBase.h> +#include <wirish/wirish.h> + +/* + * On the Maple, let the default pins be in the same location as the Arduino + * pins + */ +#define SDA 19 +#define SCL 20 + +//#define I2C_DELAY(x) {uint32 time=micros(); while(time>(micros()+x));} +#define I2C_DELAY(x) do{for(int i=0;i<x;i++) {asm volatile("nop");}}while(0) +#define SOFT_STANDARD 25 +#define SOFT_FAST 7 + +class TwoWire : public WireBase { + private: + const uint8 i2c_delay; + uint8 scl_pin; + uint8 sda_pin; + + /* + * Sets the SCL line to HIGH/LOW and allow for clock stretching by slave + * devices + */ + void set_scl(bool); + + /* + * Sets the SDA line to HIGH/LOW + */ + void set_sda(bool); + + /* + * Creates a Start condition on the bus + */ + void i2c_start(); + + /* + * Creates a Stop condition on the bus + */ + void i2c_stop(); + + /* + * Gets an ACK condition from a slave device on the bus + */ + bool i2c_get_ack(); + + /* + * Creates a ACK condition on the bus + */ + void i2c_send_ack(); + + /* + * Creates a NACK condition on the bus + */ + void i2c_send_nack(); + + /* + * Shifts in the data through SDA and clocks SCL for the slave device + */ + uint8 i2c_shift_in(); + + /* + * Shifts out the data through SDA and clocks SCL for the slave device + */ + void i2c_shift_out(uint8); + protected: + /* + * Processes the incoming I2C message defined by WireBase + */ + uint8 process(); + public: + /* + * Accept pin numbers for SCL and SDA lines. Set the delay needed + * to create the timing for I2C's Standard Mode and Fast Mode. + */ + TwoWire(uint8 scl=SCL, uint8 sda=SDA, uint8 delay=SOFT_STANDARD); + + /* + * Sets pins SDA and SCL to OUPTUT_OPEN_DRAIN, joining I2C bus as + * master. This function overwrites the default behaviour of + * .begin(uint8) in WireBase + */ + void begin(uint8 = 0x00); + + /* + * If object is destroyed, set pin numbers to 0. + */ + ~TwoWire(); +}; + +extern TwoWire Wire; + +#endif // _WIRE_H_ diff --git a/libraries/Wire/WireBase.cpp b/libraries/Wire/WireBase.cpp new file mode 100644 index 0000000..3cb0174 --- /dev/null +++ b/libraries/Wire/WireBase.cpp @@ -0,0 +1,140 @@ +/****************************************************************************** + * The MIT License + * + * Copyright (c) 2010 LeafLabs LLC. + * + * Permission is hereby granted, free of charge, to any person + * obtaining a copy of this software and associated documentation + * files (the "Software"), to deal in the Software without + * restriction, including without limitation the rights to use, copy, + * modify, merge, publish, distribute, sublicense, and/or sell copies + * of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + *****************************************************************************/ + +/** + * @file WireBase.cpp + * @author Trystan Jones <crenn6977@gmail.com> + * @brief Wire library, following the majority of the interface from Arduino. + * Provides a 'standard' interface to I2C (two-wire) communication for + * derived classes. + */ + +/* + * Library created by crenn to allow a system which would provide users the + * 'standardised' Arduino method for interfacing with I2C devices regardless of + * whether it is I2C hardware or emulating software. + */ + +#include <Wire/WireBase.h> +#include <wirish/wirish.h> + +void WireBase::begin(uint8 self_addr) { + tx_buf_idx = 0; + tx_buf_overflow = false; + rx_buf_idx = 0; + rx_buf_len = 0; +} + +void WireBase::beginTransmission(uint8 slave_address) { + itc_msg.addr = slave_address; + itc_msg.data = &tx_buf[tx_buf_idx]; + itc_msg.length = 0; + itc_msg.flags = 0; +} + +void WireBase::beginTransmission(int slave_address) { + beginTransmission((uint8)slave_address); +} + +uint8 WireBase::endTransmission(void) { + if (tx_buf_overflow) { + return EDATA; + } + process(); + tx_buf_idx = 0; + tx_buf_overflow = false; + return SUCCESS; +} + +//TODO: Add the ability to queue messages (adding a boolean to end of function +// call, allows for the Arduino style to stay while also giving the flexibility +// to bulk send +uint8 WireBase::requestFrom(uint8 address, int num_bytes) { + if (num_bytes > WIRE_BUFSIZ) { + num_bytes = WIRE_BUFSIZ; + } + itc_msg.addr = address; + itc_msg.flags = I2C_MSG_READ; + itc_msg.length = num_bytes; + itc_msg.data = &rx_buf[rx_buf_idx]; + process(); + rx_buf_len += itc_msg.xferred; + itc_msg.flags = 0; + return rx_buf_len; +} + +uint8 WireBase::requestFrom(int address, int numBytes) { + return WireBase::requestFrom((uint8)address, numBytes); +} + +void WireBase::send(uint8 value) { + if (tx_buf_idx == WIRE_BUFSIZ) { + tx_buf_overflow = true; + return; + } + tx_buf[tx_buf_idx++] = value; + itc_msg.length++; +} + +void WireBase::send(uint8* buf, int len) { + for (uint8 i = 0; i < len; i++) { + send(buf[i]); + } +} + +void WireBase::send(int value) { + send((uint8)value); +} + +void WireBase::send(int* buf, int len) { + send((uint8*)buf, (uint8)len); +} + +void WireBase::send(char* buf) { + uint8 *ptr = (uint8*)buf; + while (*ptr) { + send(*ptr); + ptr++; + } +} + +uint8 WireBase::available() { + return rx_buf_len - rx_buf_idx; +} + +uint8 WireBase::receive() { + if (rx_buf_idx == rx_buf_len) { + rx_buf_idx = 0; + rx_buf_len = 0; + return 0; + } else if (rx_buf_idx == (rx_buf_len-1)) { + uint8 temp = rx_buf[rx_buf_idx]; + rx_buf_idx = 0; + rx_buf_len = 0; + return temp; + } + return rx_buf[rx_buf_idx++]; +} diff --git a/libraries/Wire/WireBase.h b/libraries/Wire/WireBase.h new file mode 100644 index 0000000..e154476 --- /dev/null +++ b/libraries/Wire/WireBase.h @@ -0,0 +1,143 @@ +/****************************************************************************** + * The MIT License + * + * Copyright (c) 2010 LeafLabs LLC. + * + * Permission is hereby granted, free of charge, to any person + * obtaining a copy of this software and associated documentation + * files (the "Software"), to deal in the Software without + * restriction, including without limitation the rights to use, copy, + * modify, merge, publish, distribute, sublicense, and/or sell copies + * of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + *****************************************************************************/ + +/** + * @file WireBase.h + * @author Trystan Jones <crenn6977@gmail.com> + * @brief Wire library, following the majority of the interface from Arduino. + * Provides a 'standard' interface to I2C (two-wire) communication for + * derived classes. + */ + +/* + * Library created by crenn to allow a system which would provide users the + * 'standardised' Arduino method for interfacing with I2C devices regardless of + * whether it is I2C hardware or emulating software. + */ + +#ifndef _WIREBASE_H_ +#define _WIREBASE_H_ + +#include <wirish/wirish.h> +#include <libmaple/i2c.h> + +#define WIRE_BUFSIZ 32 + +/* return codes from endTransmission() */ +#define SUCCESS 0 /* transmission was successful */ +#define EDATA 1 /* too much data */ +#define ENACKADDR 2 /* received nack on transmit of address */ +#define ENACKTRNS 3 /* received nack on transmit of data */ +#define EOTHER 4 /* other error */ + +class WireBase { // Abstraction is awesome! +protected: + i2c_msg itc_msg; + uint8 rx_buf[WIRE_BUFSIZ]; /* receive buffer */ + uint8 rx_buf_idx; /* first unread idx in rx_buf */ + uint8 rx_buf_len; /* number of bytes read */ + + uint8 tx_buf[WIRE_BUFSIZ]; /* transmit buffer */ + uint8 tx_buf_idx; // next idx available in tx_buf, -1 overflow + boolean tx_buf_overflow; + + // Force derived classes to define process function + virtual uint8 process() = 0; +public: + WireBase() {} + ~WireBase() {} + + /* + * Initialises the class interface + */ + // Allow derived classes to overwrite begin function + virtual void begin(uint8 = 0x00); + + /* + * Sets up the transmission message to be processed + */ + void beginTransmission(uint8); + + /* + * Allow only 8 bit addresses to be used + */ + void beginTransmission(int); + + /* + * Call the process function to process the message if the TX + * buffer has not overflowed. + */ + uint8 endTransmission(void); + + /* + * Request bytes from a slave device and process the request, + * storing into the receiving buffer. + */ + uint8 requestFrom(uint8, int); + + /* + * Allow only 8 bit addresses to be used when requesting bytes + */ + uint8 requestFrom(int, int); + + /* + * Stack up bytes to be sent when transmitting + */ + void send(uint8); + + /* + * Stack up bytes from the array to be sent when transmitting + */ + void send(uint8*, int); + + /* + * Ensure that a sending data will only be 8-bit bytes + */ + void send(int); + + /* + * Ensure that an array sending data will only be 8-bit bytes + */ + void send(int*, int); + + /* + * Stack up bytes from a string to be sent when transmitting + */ + void send(char*); + + /* + * Return the amount of bytes that is currently in the receiving buffer + */ + uint8 available(); + + /* + * Return the value of byte in the receiving buffer that is currently being + * pointed to + */ + uint8 receive(); +}; + +#endif // _WIREBASE_H_ diff --git a/libraries/Wire/rules.mk b/libraries/Wire/rules.mk new file mode 100644 index 0000000..e16f4db --- /dev/null +++ b/libraries/Wire/rules.mk @@ -0,0 +1,29 @@ +# Standard things +sp := $(sp).x +dirstack_$(sp) := $(d) +d := $(dir) +BUILDDIRS += $(BUILD_PATH)/$(d) + +# Local flags +CFLAGS_$(d) := $(WIRISH_INCLUDES) $(LIBMAPLE_INCLUDES) + +# Local rules and targets +cSRCS_$(d) := + +cppSRCS_$(d) := WireBase.cpp HardWire.cpp Wire.cpp + +cFILES_$(d) := $(cSRCS_$(d):%=$(d)/%) +cppFILES_$(d) := $(cppSRCS_$(d):%=$(d)/%) + +OBJS_$(d) := $(cFILES_$(d):%.c=$(BUILD_PATH)/%.o) \ + $(cppFILES_$(d):%.cpp=$(BUILD_PATH)/%.o) +DEPS_$(d) := $(OBJS_$(d):%.o=%.d) + +$(OBJS_$(d)): TGT_CFLAGS := $(CFLAGS_$(d)) + +TGT_BIN += $(OBJS_$(d)) + +# Standard things +-include $(DEPS_$(d)) +d := $(dirstack_$(sp)) +sp := $(basename $(sp))
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