SakuraIO
Fork of SakuraIO by
SakuraIO_I2C.cpp@6:25e1fa75c64d, 2017-01-06 (annotated)
- Committer:
- chibiegg
- Date:
- Fri Jan 06 17:57:08 2017 +0900
- Revision:
- 6:25e1fa75c64d
- Parent:
- 3:c54a1eba22c4
Follow SakuraIOArduino v1.0.3
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
chibiegg | 3:c54a1eba22c4 | 1 | /* SAKURA Internet IoT Communication Module Library for mbed |
chibiegg | 3:c54a1eba22c4 | 2 | * |
chibiegg | 3:c54a1eba22c4 | 3 | * The MIT License (MIT) |
chibiegg | 3:c54a1eba22c4 | 4 | * |
chibiegg | 3:c54a1eba22c4 | 5 | * Copyright (c) SAKURA Internet Inc. |
chibiegg | 3:c54a1eba22c4 | 6 | * |
chibiegg | 3:c54a1eba22c4 | 7 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
chibiegg | 3:c54a1eba22c4 | 8 | * of this software and associated documentation files (the "Software"), |
chibiegg | 3:c54a1eba22c4 | 9 | * to deal in the Software without restriction, including without limitation |
chibiegg | 3:c54a1eba22c4 | 10 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
chibiegg | 3:c54a1eba22c4 | 11 | * and/or sell copies of the Software, and to permit persons to whom the Software |
chibiegg | 3:c54a1eba22c4 | 12 | * is furnished to do so, subject to the following conditions: |
chibiegg | 3:c54a1eba22c4 | 13 | * |
chibiegg | 3:c54a1eba22c4 | 14 | * The above copyright notice and this permission notice shall be included |
chibiegg | 3:c54a1eba22c4 | 15 | * in all copies or substantial portions of the Software. |
chibiegg | 3:c54a1eba22c4 | 16 | * |
chibiegg | 3:c54a1eba22c4 | 17 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
chibiegg | 3:c54a1eba22c4 | 18 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
chibiegg | 3:c54a1eba22c4 | 19 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. |
chibiegg | 3:c54a1eba22c4 | 20 | * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, |
chibiegg | 3:c54a1eba22c4 | 21 | * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
chibiegg | 3:c54a1eba22c4 | 22 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
chibiegg | 3:c54a1eba22c4 | 23 | */ |
chibiegg | 3:c54a1eba22c4 | 24 | |
spiralray | 0:8d34375d954c | 25 | #include "mbed.h" |
spiralray | 0:8d34375d954c | 26 | #include "SakuraIO.h" |
spiralray | 1:20e1dfe45dab | 27 | #include "debug.h" |
spiralray | 1:20e1dfe45dab | 28 | |
spiralray | 0:8d34375d954c | 29 | #define SAKURAIO_SLAVE_ADDR 0x4F |
spiralray | 1:20e1dfe45dab | 30 | |
spiralray | 0:8d34375d954c | 31 | #define MODE_IDLE 0x00 |
spiralray | 0:8d34375d954c | 32 | #define MODE_WRITE 0x01 |
spiralray | 0:8d34375d954c | 33 | #define MODE_READ 0x02 |
spiralray | 1:20e1dfe45dab | 34 | |
spiralray | 0:8d34375d954c | 35 | void SakuraIO_I2C::begin(){ |
spiralray | 0:8d34375d954c | 36 | mode = MODE_IDLE; |
spiralray | 0:8d34375d954c | 37 | } |
spiralray | 1:20e1dfe45dab | 38 | |
spiralray | 0:8d34375d954c | 39 | void SakuraIO_I2C::end(){ |
spiralray | 0:8d34375d954c | 40 | switch(mode){ |
spiralray | 0:8d34375d954c | 41 | case MODE_WRITE: |
spiralray | 0:8d34375d954c | 42 | i2c.stop(); |
spiralray | 0:8d34375d954c | 43 | break; |
spiralray | 0:8d34375d954c | 44 | case MODE_READ: |
spiralray | 1:20e1dfe45dab | 45 | while (_length > 0) { |
spiralray | 1:20e1dfe45dab | 46 | _length --; |
spiralray | 1:20e1dfe45dab | 47 | i2c.read(_length > 0 ? 1 : 0); |
spiralray | 1:20e1dfe45dab | 48 | } |
spiralray | 1:20e1dfe45dab | 49 | i2c.stop(); |
spiralray | 0:8d34375d954c | 50 | break; |
spiralray | 0:8d34375d954c | 51 | } |
spiralray | 1:20e1dfe45dab | 52 | |
spiralray | 0:8d34375d954c | 53 | mode = MODE_IDLE; |
spiralray | 0:8d34375d954c | 54 | } |
spiralray | 1:20e1dfe45dab | 55 | |
spiralray | 0:8d34375d954c | 56 | void SakuraIO_I2C::sendByte(uint8_t data){ |
spiralray | 0:8d34375d954c | 57 | if(mode != MODE_WRITE){ |
spiralray | 1:20e1dfe45dab | 58 | dbg("beginTr\r\n"); |
spiralray | 0:8d34375d954c | 59 | i2c.start(); |
spiralray | 0:8d34375d954c | 60 | i2c.write(SAKURAIO_SLAVE_ADDR<<1); |
spiralray | 0:8d34375d954c | 61 | mode = MODE_WRITE; |
spiralray | 0:8d34375d954c | 62 | } |
spiralray | 1:20e1dfe45dab | 63 | dbg("Write=%02x\r\n", data); |
spiralray | 0:8d34375d954c | 64 | i2c.write(data); |
spiralray | 0:8d34375d954c | 65 | } |
spiralray | 1:20e1dfe45dab | 66 | |
spiralray | 1:20e1dfe45dab | 67 | |
spiralray | 0:8d34375d954c | 68 | uint8_t SakuraIO_I2C::startReceive(uint8_t length){ |
spiralray | 1:20e1dfe45dab | 69 | if(mode != MODE_IDLE){ |
spiralray | 1:20e1dfe45dab | 70 | dbg("endTransmission\r\n"); |
spiralray | 1:20e1dfe45dab | 71 | i2c.stop(); |
spiralray | 1:20e1dfe45dab | 72 | } |
spiralray | 1:20e1dfe45dab | 73 | dbg("requestForm=%d\r\n", length); |
spiralray | 1:20e1dfe45dab | 74 | _length = length; |
spiralray | 0:8d34375d954c | 75 | i2c.start(); |
spiralray | 0:8d34375d954c | 76 | i2c.write(SAKURAIO_SLAVE_ADDR<<1 | 1); |
spiralray | 0:8d34375d954c | 77 | mode = MODE_READ; |
spiralray | 1:20e1dfe45dab | 78 | return 0; |
spiralray | 0:8d34375d954c | 79 | } |
spiralray | 1:20e1dfe45dab | 80 | |
spiralray | 0:8d34375d954c | 81 | uint8_t SakuraIO_I2C::receiveByte(){ |
spiralray | 1:20e1dfe45dab | 82 | return receiveByte(false); |
spiralray | 0:8d34375d954c | 83 | } |
spiralray | 1:20e1dfe45dab | 84 | |
spiralray | 0:8d34375d954c | 85 | uint8_t SakuraIO_I2C::receiveByte(bool stop){ |
spiralray | 0:8d34375d954c | 86 | uint8_t ret = 0; |
spiralray | 1:20e1dfe45dab | 87 | if (_length > 0) { |
spiralray | 1:20e1dfe45dab | 88 | _length --; |
spiralray | 1:20e1dfe45dab | 89 | ret = i2c.read(_length > 0 ? 1 : 0); |
spiralray | 1:20e1dfe45dab | 90 | } |
spiralray | 1:20e1dfe45dab | 91 | if(stop){ |
spiralray | 1:20e1dfe45dab | 92 | end(); |
spiralray | 1:20e1dfe45dab | 93 | } |
spiralray | 1:20e1dfe45dab | 94 | dbg("Read=%d\r\n", ret); |
spiralray | 0:8d34375d954c | 95 | return ret; |
spiralray | 0:8d34375d954c | 96 | } |
spiralray | 1:20e1dfe45dab | 97 | |
spiralray | 1:20e1dfe45dab | 98 | SakuraIO_I2C::SakuraIO_I2C (I2C &_i2c) : i2c(_i2c) { |
spiralray | 0:8d34375d954c | 99 | mode = MODE_IDLE; |
spiralray | 0:8d34375d954c | 100 | } |
spiralray | 1:20e1dfe45dab | 101 | |
spiralray | 1:20e1dfe45dab | 102 | SakuraIO_I2C::SakuraIO_I2C (PinName sda, PinName scl) : i2c(sda, scl) { |
spiralray | 1:20e1dfe45dab | 103 | mode = MODE_IDLE; |
spiralray | 1:20e1dfe45dab | 104 | } |