eeprom adding
Fork of SEEED_CAN by
seeed_can.cpp@3:29448355ef3a, 2017-03-10 (annotated)
- Committer:
- sameera0824
- Date:
- Fri Mar 10 09:32:20 2017 +0000
- Revision:
- 3:29448355ef3a
- Parent:
- 2:fd026fcfde94
EEPROM chack
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
Just4pLeisure | 0:f5d099885d3d | 1 | /* mbed FRDM-KL25Z Library for Seeed Studios CAN-BUS Shield |
Just4pLeisure | 0:f5d099885d3d | 2 | * Copyright (c) 2013 Sophie Dexter |
Just4pLeisure | 0:f5d099885d3d | 3 | * |
Just4pLeisure | 0:f5d099885d3d | 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
Just4pLeisure | 0:f5d099885d3d | 5 | * you may not use this file except in compliance with the License. |
Just4pLeisure | 0:f5d099885d3d | 6 | * You may obtain a copy of the License at |
Just4pLeisure | 0:f5d099885d3d | 7 | * |
Just4pLeisure | 0:f5d099885d3d | 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
Just4pLeisure | 0:f5d099885d3d | 9 | * |
Just4pLeisure | 0:f5d099885d3d | 10 | * Unless required by applicable law or agreed to in writing, software |
Just4pLeisure | 0:f5d099885d3d | 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
Just4pLeisure | 0:f5d099885d3d | 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
Just4pLeisure | 0:f5d099885d3d | 13 | * See the License for the specific language governing permissions and |
Just4pLeisure | 0:f5d099885d3d | 14 | * limitations under the License. |
Just4pLeisure | 0:f5d099885d3d | 15 | */ |
Just4pLeisure | 0:f5d099885d3d | 16 | |
Just4pLeisure | 0:f5d099885d3d | 17 | #include "seeed_can.h" |
Just4pLeisure | 0:f5d099885d3d | 18 | |
Just4pLeisure | 1:ad71faa09868 | 19 | /** Seeed Studios CAN-BUS Shield Constructor - Create a SEEED_CAN interface connected to the specified pins. |
Just4pLeisure | 0:f5d099885d3d | 20 | */ |
Just4pLeisure | 1:ad71faa09868 | 21 | SEEED_CAN::SEEED_CAN(PinName ncs, PinName irq, PinName mosi, PinName miso, PinName clk, int spiBitrate) : |
Just4pLeisure | 0:f5d099885d3d | 22 | _spi(mosi, miso, clk), |
Just4pLeisure | 2:fd026fcfde94 | 23 | _can(_spi, ncs, irq), |
Just4pLeisure | 2:fd026fcfde94 | 24 | _irqpin(irq) |
Just4pLeisure | 0:f5d099885d3d | 25 | { |
Just4pLeisure | 0:f5d099885d3d | 26 | // Make sure CS is high |
Just4pLeisure | 0:f5d099885d3d | 27 | _can.ncs = 1; |
Just4pLeisure | 0:f5d099885d3d | 28 | // Set up the spi interface |
Just4pLeisure | 0:f5d099885d3d | 29 | _can.spi.format(8, 3); |
Just4pLeisure | 0:f5d099885d3d | 30 | _can.spi.frequency(spiBitrate); |
Just4pLeisure | 2:fd026fcfde94 | 31 | // _can.irq.fall(this, &SEEED_CAN::call_irq); |
Just4pLeisure | 2:fd026fcfde94 | 32 | _irqpin.fall(this, &SEEED_CAN::call_irq); |
Just4pLeisure | 1:ad71faa09868 | 33 | } |
Just4pLeisure | 1:ad71faa09868 | 34 | |
Just4pLeisure | 1:ad71faa09868 | 35 | /** Open initialises the Seeed Studios CAN-BUS Shield. |
Just4pLeisure | 1:ad71faa09868 | 36 | */ |
Just4pLeisure | 2:fd026fcfde94 | 37 | int SEEED_CAN::open(int canBitrate, Mode mode) |
Just4pLeisure | 2:fd026fcfde94 | 38 | { |
Just4pLeisure | 2:fd026fcfde94 | 39 | return mcpInit(&_can, (uint32_t) canBitrate, (CANMode)mode); |
Just4pLeisure | 2:fd026fcfde94 | 40 | } |
Just4pLeisure | 2:fd026fcfde94 | 41 | |
Just4pLeisure | 2:fd026fcfde94 | 42 | /** Puts or removes the Seeed Studios CAN-BUS shield into or from silent monitoring mode |
Just4pLeisure | 2:fd026fcfde94 | 43 | */ |
Just4pLeisure | 2:fd026fcfde94 | 44 | void SEEED_CAN::monitor(bool silent) |
Just4pLeisure | 1:ad71faa09868 | 45 | { |
Just4pLeisure | 2:fd026fcfde94 | 46 | mcpMonitor(&_can, silent); |
Just4pLeisure | 2:fd026fcfde94 | 47 | } |
Just4pLeisure | 2:fd026fcfde94 | 48 | |
Just4pLeisure | 2:fd026fcfde94 | 49 | /** Change the Seeed Studios CAN-BUS shield CAN operation mode |
Just4pLeisure | 2:fd026fcfde94 | 50 | */ |
Just4pLeisure | 2:fd026fcfde94 | 51 | int SEEED_CAN::mode(Mode mode) |
Just4pLeisure | 2:fd026fcfde94 | 52 | { |
Just4pLeisure | 2:fd026fcfde94 | 53 | return mcpMode(&_can, (CANMode)mode); |
Just4pLeisure | 0:f5d099885d3d | 54 | } |
Just4pLeisure | 0:f5d099885d3d | 55 | |
Just4pLeisure | 1:ad71faa09868 | 56 | /** Set the CAN bus frequency (Bit Rate) |
Just4pLeisure | 0:f5d099885d3d | 57 | */ |
Just4pLeisure | 1:ad71faa09868 | 58 | int SEEED_CAN::frequency(int canBitRate) |
Just4pLeisure | 0:f5d099885d3d | 59 | { |
Just4pLeisure | 1:ad71faa09868 | 60 | // return mcpSetBitRate(&_can, (uint32_t) canBitRate); |
Just4pLeisure | 2:fd026fcfde94 | 61 | return mcpInit(&_can, (uint32_t) canBitRate, (CANMode)Normal); |
Just4pLeisure | 0:f5d099885d3d | 62 | } |
Just4pLeisure | 0:f5d099885d3d | 63 | |
Just4pLeisure | 1:ad71faa09868 | 64 | /** Read a CAN bus message from the MCP2515 (if one has been received) |
Just4pLeisure | 0:f5d099885d3d | 65 | */ |
Just4pLeisure | 0:f5d099885d3d | 66 | int SEEED_CAN::read(SEEED_CANMessage &msg) |
Just4pLeisure | 0:f5d099885d3d | 67 | { |
Just4pLeisure | 0:f5d099885d3d | 68 | return mcpCanRead(&_can, &msg); |
Just4pLeisure | 0:f5d099885d3d | 69 | } |
Just4pLeisure | 0:f5d099885d3d | 70 | |
Just4pLeisure | 0:f5d099885d3d | 71 | /** Write a CAN bus message to the MCP2515 (if there is a free message buffer) |
Just4pLeisure | 0:f5d099885d3d | 72 | */ |
Just4pLeisure | 0:f5d099885d3d | 73 | int SEEED_CAN::write(SEEED_CANMessage msg) |
Just4pLeisure | 0:f5d099885d3d | 74 | { |
Just4pLeisure | 0:f5d099885d3d | 75 | return mcpCanWrite(&_can, msg); |
Just4pLeisure | 0:f5d099885d3d | 76 | } |
Just4pLeisure | 0:f5d099885d3d | 77 | |
Just4pLeisure | 1:ad71faa09868 | 78 | /** Configure one of the Accpetance Masks (0 or 1) |
Just4pLeisure | 1:ad71faa09868 | 79 | */ |
Just4pLeisure | 1:ad71faa09868 | 80 | int SEEED_CAN::mask(int maskNum, int canId, CANFormat format) |
Just4pLeisure | 1:ad71faa09868 | 81 | { |
Just4pLeisure | 1:ad71faa09868 | 82 | return mcpInitMask(&_can, maskNum, canId, format); |
Just4pLeisure | 1:ad71faa09868 | 83 | } |
Just4pLeisure | 1:ad71faa09868 | 84 | |
Just4pLeisure | 1:ad71faa09868 | 85 | /** Configure one of the Acceptance Filters (0 through 5) |
Just4pLeisure | 1:ad71faa09868 | 86 | */ |
Just4pLeisure | 1:ad71faa09868 | 87 | int SEEED_CAN::filter(int filterNum, int canId, CANFormat format) |
Just4pLeisure | 1:ad71faa09868 | 88 | { |
Just4pLeisure | 1:ad71faa09868 | 89 | return mcpInitFilter(&_can, filterNum, canId, format); |
Just4pLeisure | 1:ad71faa09868 | 90 | } |
Just4pLeisure | 1:ad71faa09868 | 91 | |
Just4pLeisure | 0:f5d099885d3d | 92 | /** Returns number of message reception (read) errors to detect read overflow errors. |
Just4pLeisure | 0:f5d099885d3d | 93 | */ |
Just4pLeisure | 0:f5d099885d3d | 94 | unsigned char SEEED_CAN::rderror(void) |
Just4pLeisure | 0:f5d099885d3d | 95 | { |
Just4pLeisure | 0:f5d099885d3d | 96 | return mcpReceptionErrorCount(&_can); |
Just4pLeisure | 0:f5d099885d3d | 97 | } |
Just4pLeisure | 0:f5d099885d3d | 98 | |
Just4pLeisure | 0:f5d099885d3d | 99 | /** Returns number of message transmission (write) errors to detect write overflow errors. |
Just4pLeisure | 0:f5d099885d3d | 100 | */ |
Just4pLeisure | 0:f5d099885d3d | 101 | unsigned char SEEED_CAN::tderror(void) |
Just4pLeisure | 0:f5d099885d3d | 102 | { |
Just4pLeisure | 0:f5d099885d3d | 103 | return mcpTransmissionErrorCount(&_can); |
Just4pLeisure | 0:f5d099885d3d | 104 | } |
Just4pLeisure | 0:f5d099885d3d | 105 | |
Just4pLeisure | 1:ad71faa09868 | 106 | /** Check if any type of error has been detected on the CAN bus |
Just4pLeisure | 0:f5d099885d3d | 107 | */ |
Just4pLeisure | 2:fd026fcfde94 | 108 | int SEEED_CAN::errors(ErrorType type) |
Just4pLeisure | 0:f5d099885d3d | 109 | { |
Just4pLeisure | 2:fd026fcfde94 | 110 | return mcpErrorType(&_can, (CANFlags)type); |
Just4pLeisure | 0:f5d099885d3d | 111 | } |
Just4pLeisure | 0:f5d099885d3d | 112 | |
Just4pLeisure | 2:fd026fcfde94 | 113 | /** Returns the contents of the MCP2515's Error Flag register |
Just4pLeisure | 0:f5d099885d3d | 114 | */ |
Just4pLeisure | 2:fd026fcfde94 | 115 | unsigned char SEEED_CAN::errorFlags(void) |
Just4pLeisure | 2:fd026fcfde94 | 116 | { |
Just4pLeisure | 2:fd026fcfde94 | 117 | return mcpErrorFlags(&_can); |
Just4pLeisure | 2:fd026fcfde94 | 118 | } |
Just4pLeisure | 0:f5d099885d3d | 119 | |
Just4pLeisure | 0:f5d099885d3d | 120 | /** Attach a function to call whenever a CAN frame received interrupt is generated. |
Just4pLeisure | 0:f5d099885d3d | 121 | */ |
Just4pLeisure | 2:fd026fcfde94 | 122 | void SEEED_CAN::attach(void (*fptr)(void), IrqType event) |
Just4pLeisure | 2:fd026fcfde94 | 123 | { |
Just4pLeisure | 2:fd026fcfde94 | 124 | if (fptr) { |
Just4pLeisure | 2:fd026fcfde94 | 125 | _callback_irq.attach(fptr); |
Just4pLeisure | 2:fd026fcfde94 | 126 | mcpSetInterrupts(&_can, (CANIrqs)event); |
Just4pLeisure | 2:fd026fcfde94 | 127 | // _irq[(CanIrqType)type].attach(fptr); |
Just4pLeisure | 2:fd026fcfde94 | 128 | // can_irq_set(&_can, (CanIrqType)type, 1); |
Just4pLeisure | 2:fd026fcfde94 | 129 | } else { |
Just4pLeisure | 2:fd026fcfde94 | 130 | mcpSetInterrupts(&_can, (CANIrqs)SEEED_CAN::None); |
Just4pLeisure | 2:fd026fcfde94 | 131 | // can_irq_set(&_can, (CanIrqType)type, 0); |
Just4pLeisure | 2:fd026fcfde94 | 132 | } |
Just4pLeisure | 2:fd026fcfde94 | 133 | } |
Just4pLeisure | 2:fd026fcfde94 | 134 | |
Just4pLeisure | 2:fd026fcfde94 | 135 | |
Just4pLeisure | 2:fd026fcfde94 | 136 | void SEEED_CAN::call_irq(void) |
Just4pLeisure | 0:f5d099885d3d | 137 | { |
Just4pLeisure | 2:fd026fcfde94 | 138 | _callback_irq.call(); |
Just4pLeisure | 0:f5d099885d3d | 139 | } |
Just4pLeisure | 2:fd026fcfde94 | 140 | |
Just4pLeisure | 2:fd026fcfde94 | 141 | /** Check if the specified interrupt event has occurred |
Just4pLeisure | 2:fd026fcfde94 | 142 | */ |
Just4pLeisure | 2:fd026fcfde94 | 143 | int SEEED_CAN::interrupts(IrqType type) |
Just4pLeisure | 2:fd026fcfde94 | 144 | { |
Just4pLeisure | 2:fd026fcfde94 | 145 | return mcpInterruptType(&_can, (CANIrqs)type); |
Just4pLeisure | 2:fd026fcfde94 | 146 | } |
Just4pLeisure | 2:fd026fcfde94 | 147 | |
Just4pLeisure | 2:fd026fcfde94 | 148 | /** Returns the contents of the MCP2515's Interrupt Flag register |
Just4pLeisure | 2:fd026fcfde94 | 149 | */ |
Just4pLeisure | 2:fd026fcfde94 | 150 | unsigned char SEEED_CAN::interruptFlags(void) |
Just4pLeisure | 2:fd026fcfde94 | 151 | { |
Just4pLeisure | 2:fd026fcfde94 | 152 | return mcpInterruptFlags(&_can); |
Just4pLeisure | 2:fd026fcfde94 | 153 | } |