An I2C Scanner, to test that your I2C can be detected. Works with the NRF51 Development Kit.
Dependencies: mbed-src-nrf51822
wire.h@0:839b7264c387, 2016-06-09 (annotated)
- Committer:
- Cannonball2134
- Date:
- Thu Jun 09 11:06:51 2016 +0000
- Revision:
- 0:839b7264c387
Working Version of I2C Scanner 09-06-16.; The mbed-src-nrf51822 library and wire.cpp/.h is what fixed previous issues
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
Cannonball2134 | 0:839b7264c387 | 1 | /* |
Cannonball2134 | 0:839b7264c387 | 2 | |
Cannonball2134 | 0:839b7264c387 | 3 | Copyright (c) 2014 RedBearLab, All rights reserved. |
Cannonball2134 | 0:839b7264c387 | 4 | |
Cannonball2134 | 0:839b7264c387 | 5 | This library is free software; you can redistribute it and/or |
Cannonball2134 | 0:839b7264c387 | 6 | modify it under the terms of the GNU Lesser General Public |
Cannonball2134 | 0:839b7264c387 | 7 | License as published by the Free Software Foundation; either |
Cannonball2134 | 0:839b7264c387 | 8 | version 2.1 of the License, or (at your option) any later version. |
Cannonball2134 | 0:839b7264c387 | 9 | |
Cannonball2134 | 0:839b7264c387 | 10 | This library is distributed in the hope that it will be useful, |
Cannonball2134 | 0:839b7264c387 | 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
Cannonball2134 | 0:839b7264c387 | 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. |
Cannonball2134 | 0:839b7264c387 | 13 | See the GNU Lesser General Public License for more details. |
Cannonball2134 | 0:839b7264c387 | 14 | |
Cannonball2134 | 0:839b7264c387 | 15 | You should have received a copy of the GNU Lesser General Public |
Cannonball2134 | 0:839b7264c387 | 16 | License along with this library; if not, write to the Free Software |
Cannonball2134 | 0:839b7264c387 | 17 | Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
Cannonball2134 | 0:839b7264c387 | 18 | |
Cannonball2134 | 0:839b7264c387 | 19 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
Cannonball2134 | 0:839b7264c387 | 20 | EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
Cannonball2134 | 0:839b7264c387 | 21 | MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. |
Cannonball2134 | 0:839b7264c387 | 22 | IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY |
Cannonball2134 | 0:839b7264c387 | 23 | CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, |
Cannonball2134 | 0:839b7264c387 | 24 | TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE |
Cannonball2134 | 0:839b7264c387 | 25 | SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
Cannonball2134 | 0:839b7264c387 | 26 | |
Cannonball2134 | 0:839b7264c387 | 27 | */ |
Cannonball2134 | 0:839b7264c387 | 28 | |
Cannonball2134 | 0:839b7264c387 | 29 | #ifndef _WIRE_H_ |
Cannonball2134 | 0:839b7264c387 | 30 | #define _WIRE_H_ |
Cannonball2134 | 0:839b7264c387 | 31 | |
Cannonball2134 | 0:839b7264c387 | 32 | #include "mbed.h" |
Cannonball2134 | 0:839b7264c387 | 33 | |
Cannonball2134 | 0:839b7264c387 | 34 | #define TWI_DELAY(x) wait_us(x); |
Cannonball2134 | 0:839b7264c387 | 35 | |
Cannonball2134 | 0:839b7264c387 | 36 | #define BUFF_MAX_LENGTH 128 |
Cannonball2134 | 0:839b7264c387 | 37 | |
Cannonball2134 | 0:839b7264c387 | 38 | #define MAX_TIMEOUT_LOOPS (20000UL) |
Cannonball2134 | 0:839b7264c387 | 39 | |
Cannonball2134 | 0:839b7264c387 | 40 | #define TWI_FREQUENCY_100K 0 |
Cannonball2134 | 0:839b7264c387 | 41 | #define TWI_FREQUENCY_250K 1 |
Cannonball2134 | 0:839b7264c387 | 42 | #define TWI_FREQUENCY_400K 2 |
Cannonball2134 | 0:839b7264c387 | 43 | |
Cannonball2134 | 0:839b7264c387 | 44 | #define TWI_SCL 28 |
Cannonball2134 | 0:839b7264c387 | 45 | #define TWI_SDA 29 |
Cannonball2134 | 0:839b7264c387 | 46 | |
Cannonball2134 | 0:839b7264c387 | 47 | |
Cannonball2134 | 0:839b7264c387 | 48 | class TwoWire |
Cannonball2134 | 0:839b7264c387 | 49 | { |
Cannonball2134 | 0:839b7264c387 | 50 | public : |
Cannonball2134 | 0:839b7264c387 | 51 | TwoWire(NRF_TWI_Type *twi_use); |
Cannonball2134 | 0:839b7264c387 | 52 | void begin(); |
Cannonball2134 | 0:839b7264c387 | 53 | void begin(uint32_t scl_pin, uint32_t sda_pin, uint8_t speed); |
Cannonball2134 | 0:839b7264c387 | 54 | void beginTransmission(uint8_t); |
Cannonball2134 | 0:839b7264c387 | 55 | void beginTransmission(int); |
Cannonball2134 | 0:839b7264c387 | 56 | uint8_t endTransmission(void); |
Cannonball2134 | 0:839b7264c387 | 57 | uint8_t endTransmission(uint8_t); |
Cannonball2134 | 0:839b7264c387 | 58 | uint8_t requestFrom(uint8_t, uint8_t); |
Cannonball2134 | 0:839b7264c387 | 59 | uint8_t requestFrom(uint8_t, uint8_t, uint8_t); |
Cannonball2134 | 0:839b7264c387 | 60 | uint8_t requestFrom(int, int); |
Cannonball2134 | 0:839b7264c387 | 61 | uint8_t requestFrom(int, int, int); |
Cannonball2134 | 0:839b7264c387 | 62 | int write(uint8_t); |
Cannonball2134 | 0:839b7264c387 | 63 | int write(const uint8_t *, size_t); |
Cannonball2134 | 0:839b7264c387 | 64 | int available(void); |
Cannonball2134 | 0:839b7264c387 | 65 | int read(void); |
Cannonball2134 | 0:839b7264c387 | 66 | |
Cannonball2134 | 0:839b7264c387 | 67 | private : |
Cannonball2134 | 0:839b7264c387 | 68 | uint8_t RX_Buffer[BUFF_MAX_LENGTH]; |
Cannonball2134 | 0:839b7264c387 | 69 | uint8_t RX_BufferIndex; |
Cannonball2134 | 0:839b7264c387 | 70 | uint8_t RX_BufferLength; |
Cannonball2134 | 0:839b7264c387 | 71 | |
Cannonball2134 | 0:839b7264c387 | 72 | uint8_t TX_Buffer[BUFF_MAX_LENGTH]; |
Cannonball2134 | 0:839b7264c387 | 73 | uint8_t TX_BufferIndex; |
Cannonball2134 | 0:839b7264c387 | 74 | uint8_t TX_BufferLength; |
Cannonball2134 | 0:839b7264c387 | 75 | |
Cannonball2134 | 0:839b7264c387 | 76 | NRF_TWI_Type *twi; |
Cannonball2134 | 0:839b7264c387 | 77 | |
Cannonball2134 | 0:839b7264c387 | 78 | uint8_t PPI_channel; |
Cannonball2134 | 0:839b7264c387 | 79 | uint8_t Transform_Addr; |
Cannonball2134 | 0:839b7264c387 | 80 | |
Cannonball2134 | 0:839b7264c387 | 81 | uint32_t SDA_Pin; |
Cannonball2134 | 0:839b7264c387 | 82 | uint32_t SCL_Pin; |
Cannonball2134 | 0:839b7264c387 | 83 | |
Cannonball2134 | 0:839b7264c387 | 84 | uint32_t twi_frequency; |
Cannonball2134 | 0:839b7264c387 | 85 | |
Cannonball2134 | 0:839b7264c387 | 86 | enum TwoWireStatus { |
Cannonball2134 | 0:839b7264c387 | 87 | UNINITIALIZED, |
Cannonball2134 | 0:839b7264c387 | 88 | MASTER_IDLE, |
Cannonball2134 | 0:839b7264c387 | 89 | MASTER_SEND, |
Cannonball2134 | 0:839b7264c387 | 90 | MASTER_RECV, |
Cannonball2134 | 0:839b7264c387 | 91 | SLAVE_IDLE, |
Cannonball2134 | 0:839b7264c387 | 92 | SLAVE_RECV, |
Cannonball2134 | 0:839b7264c387 | 93 | SLAVE_SEND |
Cannonball2134 | 0:839b7264c387 | 94 | }; |
Cannonball2134 | 0:839b7264c387 | 95 | TwoWireStatus twi_status; |
Cannonball2134 | 0:839b7264c387 | 96 | |
Cannonball2134 | 0:839b7264c387 | 97 | bool twi_master_clear_bus(void); |
Cannonball2134 | 0:839b7264c387 | 98 | bool twi_master_init(void); |
Cannonball2134 | 0:839b7264c387 | 99 | uint8_t twi_master_read(uint8_t *data, uint8_t data_length, uint8_t issue_stop_condition); |
Cannonball2134 | 0:839b7264c387 | 100 | uint8_t twi_master_write(uint8_t *data, uint8_t data_length, uint8_t issue_stop_condition); |
Cannonball2134 | 0:839b7264c387 | 101 | }; |
Cannonball2134 | 0:839b7264c387 | 102 | |
Cannonball2134 | 0:839b7264c387 | 103 | #endif |