code with new accelerometers
Dependencies: BLE_API i2c-serial-conflict nRF51822
Fork of accel_to_blenano_i2c by
wire.h
- Committer:
- cpadua
- Date:
- 2017-04-26
- Revision:
- 9:c175975679dc
- Parent:
- 0:6a249a5be3a4
File content as of revision 9:c175975679dc:
/* Copyright (c) 2014 RedBearLab, All rights reserved. This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 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. */ #ifndef _WIRE_H_ #define _WIRE_H_ #include "mbed.h" #define TWI_DELAY(x) wait_us(x); #define BUFF_MAX_LENGTH 128 #define MAX_TIMEOUT_LOOPS (20000UL) #define TWI_FREQUENCY_100K 0 #define TWI_FREQUENCY_250K 1 #define TWI_FREQUENCY_400K 2 #define TWI_SCL 28 #define TWI_SDA 29 class TwoWire { public : TwoWire(NRF_TWI_Type *twi_use); void begin(); void begin(uint32_t scl_pin, uint32_t sda_pin, uint8_t speed); void beginTransmission(uint8_t); void beginTransmission(int); uint8_t endTransmission(void); uint8_t endTransmission(uint8_t); uint8_t requestFrom(uint8_t, uint8_t); uint8_t requestFrom(uint8_t, uint8_t, uint8_t); uint8_t requestFrom(int, int); uint8_t requestFrom(int, int, int); int write(uint8_t); int write(const uint8_t *, size_t); int available(void); int read(void); private : uint8_t RX_Buffer[BUFF_MAX_LENGTH]; uint8_t RX_BufferIndex; uint8_t RX_BufferLength; uint8_t TX_Buffer[BUFF_MAX_LENGTH]; uint8_t TX_BufferIndex; uint8_t TX_BufferLength; NRF_TWI_Type *twi; uint8_t PPI_channel; uint8_t Transform_Addr; uint32_t SDA_Pin; uint32_t SCL_Pin; uint32_t twi_frequency; enum TwoWireStatus { UNINITIALIZED, MASTER_IDLE, MASTER_SEND, MASTER_RECV, SLAVE_IDLE, SLAVE_RECV, SLAVE_SEND }; TwoWireStatus twi_status; bool twi_master_clear_bus(void); bool twi_master_init(void); uint8_t twi_master_read(uint8_t *data, uint8_t data_length, uint8_t issue_stop_condition); uint8_t twi_master_write(uint8_t *data, uint8_t data_length, uint8_t issue_stop_condition); }; #endif