mbed library sources, include can_api for nucleo-f091rc
Dependents: CanNucleoF0_example
Fork of mbed-src by
targets/hal/TARGET_WIZNET/TARGET_W7500x/i2c_api.c@645:13c87cbecd54, 2016-01-07 (annotated)
- Committer:
- ptpaterson
- Date:
- Thu Jan 07 05:49:05 2016 +0000
- Revision:
- 645:13c87cbecd54
- Parent:
- 619:034e698bc035
corrected freeze on CAN_RECEIVE_IT
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
mbed_official | 558:0880f51c4036 | 1 | /* mbed Microcontroller Library |
mbed_official | 558:0880f51c4036 | 2 | ******************************************************************************* |
mbed_official | 558:0880f51c4036 | 3 | * Copyright (c) 2015 WIZnet Co.,Ltd. All rights reserved. |
mbed_official | 558:0880f51c4036 | 4 | * All rights reserved. |
mbed_official | 558:0880f51c4036 | 5 | * |
mbed_official | 558:0880f51c4036 | 6 | * Redistribution and use in source and binary forms, with or without |
mbed_official | 558:0880f51c4036 | 7 | * modification, are permitted provided that the following conditions are met: |
mbed_official | 558:0880f51c4036 | 8 | * |
mbed_official | 558:0880f51c4036 | 9 | * 1. Redistributions of source code must retain the above copyright notice, |
mbed_official | 558:0880f51c4036 | 10 | * this list of conditions and the following disclaimer. |
mbed_official | 558:0880f51c4036 | 11 | * 2. Redistributions in binary form must reproduce the above copyright notice, |
mbed_official | 558:0880f51c4036 | 12 | * this list of conditions and the following disclaimer in the documentation |
mbed_official | 558:0880f51c4036 | 13 | * and/or other materials provided with the distribution. |
mbed_official | 558:0880f51c4036 | 14 | * 3. Neither the name of ARM Limited nor the names of its contributors |
mbed_official | 558:0880f51c4036 | 15 | * may be used to endorse or promote products derived from this software |
mbed_official | 558:0880f51c4036 | 16 | * without specific prior written permission. |
mbed_official | 558:0880f51c4036 | 17 | * |
mbed_official | 558:0880f51c4036 | 18 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
mbed_official | 558:0880f51c4036 | 19 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
mbed_official | 558:0880f51c4036 | 20 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
mbed_official | 558:0880f51c4036 | 21 | * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE |
mbed_official | 558:0880f51c4036 | 22 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
mbed_official | 558:0880f51c4036 | 23 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
mbed_official | 558:0880f51c4036 | 24 | * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
mbed_official | 558:0880f51c4036 | 25 | * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
mbed_official | 558:0880f51c4036 | 26 | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
mbed_official | 558:0880f51c4036 | 27 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
mbed_official | 558:0880f51c4036 | 28 | ******************************************************************************* |
mbed_official | 558:0880f51c4036 | 29 | */ |
mbed_official | 558:0880f51c4036 | 30 | |
mbed_official | 558:0880f51c4036 | 31 | #include "mbed_assert.h" |
mbed_official | 558:0880f51c4036 | 32 | #include "i2c_api.h" |
mbed_official | 558:0880f51c4036 | 33 | |
mbed_official | 576:99a3d3d9c43f | 34 | |
mbed_official | 558:0880f51c4036 | 35 | #if DEVICE_I2C |
mbed_official | 558:0880f51c4036 | 36 | |
mbed_official | 558:0880f51c4036 | 37 | #include "cmsis.h" |
mbed_official | 558:0880f51c4036 | 38 | #include "pinmap.h" |
mbed_official | 558:0880f51c4036 | 39 | #include "PeripheralPins.h" |
mbed_official | 558:0880f51c4036 | 40 | |
mbed_official | 576:99a3d3d9c43f | 41 | #include "wait_api.h" |
mbed_official | 576:99a3d3d9c43f | 42 | #include "us_ticker_api.h" |
mbed_official | 619:034e698bc035 | 43 | #include "W7500x_i2c.h" |
mbed_official | 576:99a3d3d9c43f | 44 | |
mbed_official | 558:0880f51c4036 | 45 | /* Timeout values for flags and events waiting loops. These timeouts are |
mbed_official | 558:0880f51c4036 | 46 | not based on accurate values, they just guarantee that the application will |
mbed_official | 558:0880f51c4036 | 47 | not remain stuck if the I2C communication is corrupted. */ |
mbed_official | 558:0880f51c4036 | 48 | #define FLAG_TIMEOUT ((int)0x1000) |
mbed_official | 558:0880f51c4036 | 49 | #define LONG_TIMEOUT ((int)0xFFFF) |
mbed_official | 558:0880f51c4036 | 50 | |
mbed_official | 558:0880f51c4036 | 51 | |
mbed_official | 558:0880f51c4036 | 52 | void i2c_init(i2c_t *obj, PinName sda, PinName scl) |
mbed_official | 558:0880f51c4036 | 53 | { |
mbed_official | 601:248b0d2dd755 | 54 | I2C_ConfigStruct conf; |
mbed_official | 601:248b0d2dd755 | 55 | |
mbed_official | 601:248b0d2dd755 | 56 | //Determine the I2C to use |
mbed_official | 558:0880f51c4036 | 57 | I2CName i2c_sda = (I2CName)pinmap_peripheral(sda, PinMap_I2C_SDA); |
mbed_official | 558:0880f51c4036 | 58 | I2CName i2c_scl = (I2CName)pinmap_peripheral(scl, PinMap_I2C_SCL); |
mbed_official | 601:248b0d2dd755 | 59 | obj->I2Cx = (I2CName)pinmap_merge(i2c_sda, i2c_scl); |
mbed_official | 601:248b0d2dd755 | 60 | MBED_ASSERT(obj->I2Cx != (I2CName)NC); |
mbed_official | 601:248b0d2dd755 | 61 | |
mbed_official | 601:248b0d2dd755 | 62 | obj->sda = sda; |
mbed_official | 601:248b0d2dd755 | 63 | obj->scl = scl; |
mbed_official | 601:248b0d2dd755 | 64 | obj->ADDRESS = 0x0; |
mbed_official | 558:0880f51c4036 | 65 | obj->is_setAddress = 0; |
mbed_official | 601:248b0d2dd755 | 66 | |
mbed_official | 601:248b0d2dd755 | 67 | conf.sda = (I2C_PinName)obj->sda; |
mbed_official | 601:248b0d2dd755 | 68 | conf.scl = (I2C_PinName)obj->scl; |
mbed_official | 601:248b0d2dd755 | 69 | |
mbed_official | 601:248b0d2dd755 | 70 | I2C_Init(&conf); |
mbed_official | 558:0880f51c4036 | 71 | } |
mbed_official | 558:0880f51c4036 | 72 | |
mbed_official | 558:0880f51c4036 | 73 | void i2c_frequency(i2c_t *obj, int hz) |
mbed_official | 558:0880f51c4036 | 74 | { |
mbed_official | 601:248b0d2dd755 | 75 | |
mbed_official | 558:0880f51c4036 | 76 | } |
mbed_official | 558:0880f51c4036 | 77 | |
mbed_official | 558:0880f51c4036 | 78 | inline int i2c_start(i2c_t *obj) |
mbed_official | 558:0880f51c4036 | 79 | { |
mbed_official | 601:248b0d2dd755 | 80 | I2C_ConfigStruct conf; |
mbed_official | 601:248b0d2dd755 | 81 | conf.sda = (I2C_PinName)obj->sda; |
mbed_official | 601:248b0d2dd755 | 82 | conf.scl = (I2C_PinName)obj->scl; |
mbed_official | 601:248b0d2dd755 | 83 | |
mbed_official | 601:248b0d2dd755 | 84 | I2C_Start(&conf); |
mbed_official | 601:248b0d2dd755 | 85 | |
mbed_official | 558:0880f51c4036 | 86 | return 0; |
mbed_official | 558:0880f51c4036 | 87 | } |
mbed_official | 558:0880f51c4036 | 88 | |
mbed_official | 558:0880f51c4036 | 89 | inline int i2c_stop(i2c_t *obj) |
mbed_official | 601:248b0d2dd755 | 90 | { |
mbed_official | 601:248b0d2dd755 | 91 | I2C_ConfigStruct conf; |
mbed_official | 601:248b0d2dd755 | 92 | conf.sda = (I2C_PinName)obj->sda; |
mbed_official | 601:248b0d2dd755 | 93 | conf.scl = (I2C_PinName)obj->scl; |
mbed_official | 576:99a3d3d9c43f | 94 | |
mbed_official | 601:248b0d2dd755 | 95 | I2C_Stop(&conf); |
mbed_official | 576:99a3d3d9c43f | 96 | |
mbed_official | 558:0880f51c4036 | 97 | return 0; |
mbed_official | 558:0880f51c4036 | 98 | } |
mbed_official | 558:0880f51c4036 | 99 | |
mbed_official | 558:0880f51c4036 | 100 | int i2c_read(i2c_t *obj, int address, char *data, int length, int stop) |
mbed_official | 558:0880f51c4036 | 101 | { |
mbed_official | 601:248b0d2dd755 | 102 | I2C_ConfigStruct conf; |
mbed_official | 601:248b0d2dd755 | 103 | |
mbed_official | 601:248b0d2dd755 | 104 | conf.sda = (I2C_PinName)obj->sda; |
mbed_official | 601:248b0d2dd755 | 105 | conf.scl = (I2C_PinName)obj->scl; |
mbed_official | 576:99a3d3d9c43f | 106 | |
mbed_official | 601:248b0d2dd755 | 107 | |
mbed_official | 601:248b0d2dd755 | 108 | if(stop) |
mbed_official | 601:248b0d2dd755 | 109 | { |
mbed_official | 619:034e698bc035 | 110 | if(I2C_Read(&conf, address, (uint8_t*)data, length) != 0) |
mbed_official | 601:248b0d2dd755 | 111 | return -1; |
mbed_official | 558:0880f51c4036 | 112 | } |
mbed_official | 558:0880f51c4036 | 113 | else |
mbed_official | 558:0880f51c4036 | 114 | { |
mbed_official | 619:034e698bc035 | 115 | if(I2C_ReadRepeated(&conf, address, (uint8_t*)data, length) != 0) |
mbed_official | 601:248b0d2dd755 | 116 | return -1; |
mbed_official | 558:0880f51c4036 | 117 | } |
mbed_official | 576:99a3d3d9c43f | 118 | |
mbed_official | 601:248b0d2dd755 | 119 | return length; |
mbed_official | 576:99a3d3d9c43f | 120 | |
mbed_official | 558:0880f51c4036 | 121 | } |
mbed_official | 558:0880f51c4036 | 122 | |
mbed_official | 558:0880f51c4036 | 123 | int i2c_write(i2c_t *obj, int address, const char *data, int length, int stop) |
mbed_official | 558:0880f51c4036 | 124 | { |
mbed_official | 601:248b0d2dd755 | 125 | I2C_ConfigStruct conf; |
mbed_official | 601:248b0d2dd755 | 126 | |
mbed_official | 601:248b0d2dd755 | 127 | conf.sda = (I2C_PinName)obj->sda; |
mbed_official | 601:248b0d2dd755 | 128 | conf.scl = (I2C_PinName)obj->scl; |
mbed_official | 601:248b0d2dd755 | 129 | |
mbed_official | 576:99a3d3d9c43f | 130 | |
mbed_official | 601:248b0d2dd755 | 131 | if(stop) |
mbed_official | 601:248b0d2dd755 | 132 | { |
mbed_official | 619:034e698bc035 | 133 | if(I2C_Write(&conf, address, (uint8_t*)data, length) != 0) |
mbed_official | 601:248b0d2dd755 | 134 | return -1; |
mbed_official | 601:248b0d2dd755 | 135 | } |
mbed_official | 558:0880f51c4036 | 136 | else |
mbed_official | 558:0880f51c4036 | 137 | { |
mbed_official | 619:034e698bc035 | 138 | if(I2C_WriteRepeated(&conf, address, (uint8_t*)data, length) != 0) |
mbed_official | 601:248b0d2dd755 | 139 | return -1; |
mbed_official | 558:0880f51c4036 | 140 | } |
mbed_official | 576:99a3d3d9c43f | 141 | |
mbed_official | 601:248b0d2dd755 | 142 | return length; |
mbed_official | 558:0880f51c4036 | 143 | } |
mbed_official | 558:0880f51c4036 | 144 | |
mbed_official | 558:0880f51c4036 | 145 | int i2c_byte_read(i2c_t *obj, int last) |
mbed_official | 558:0880f51c4036 | 146 | { |
mbed_official | 601:248b0d2dd755 | 147 | uint8_t ret; |
mbed_official | 601:248b0d2dd755 | 148 | I2C_ConfigStruct conf; |
mbed_official | 601:248b0d2dd755 | 149 | |
mbed_official | 601:248b0d2dd755 | 150 | conf.sda = (I2C_PinName)obj->sda; |
mbed_official | 601:248b0d2dd755 | 151 | conf.scl = (I2C_PinName)obj->scl; |
mbed_official | 601:248b0d2dd755 | 152 | |
mbed_official | 601:248b0d2dd755 | 153 | ret = I2C_ReadByte(&conf); |
mbed_official | 601:248b0d2dd755 | 154 | |
mbed_official | 601:248b0d2dd755 | 155 | if(last) |
mbed_official | 601:248b0d2dd755 | 156 | I2C_SendNACK(&conf); |
mbed_official | 601:248b0d2dd755 | 157 | else |
mbed_official | 601:248b0d2dd755 | 158 | I2C_SendACK(&conf); |
mbed_official | 601:248b0d2dd755 | 159 | |
mbed_official | 601:248b0d2dd755 | 160 | return (int)ret; |
mbed_official | 558:0880f51c4036 | 161 | } |
mbed_official | 558:0880f51c4036 | 162 | |
mbed_official | 558:0880f51c4036 | 163 | int i2c_byte_write(i2c_t *obj, int data) |
mbed_official | 558:0880f51c4036 | 164 | { |
mbed_official | 601:248b0d2dd755 | 165 | I2C_ConfigStruct conf; |
mbed_official | 601:248b0d2dd755 | 166 | |
mbed_official | 601:248b0d2dd755 | 167 | conf.sda = (I2C_PinName)obj->sda; |
mbed_official | 601:248b0d2dd755 | 168 | conf.scl = (I2C_PinName)obj->scl; |
mbed_official | 601:248b0d2dd755 | 169 | |
mbed_official | 601:248b0d2dd755 | 170 | if(I2C_WriteByte(&conf, (uint8_t)data)) // NACK |
mbed_official | 601:248b0d2dd755 | 171 | return 0; |
mbed_official | 601:248b0d2dd755 | 172 | else //ack |
mbed_official | 601:248b0d2dd755 | 173 | return 1; |
mbed_official | 558:0880f51c4036 | 174 | } |
mbed_official | 558:0880f51c4036 | 175 | |
mbed_official | 558:0880f51c4036 | 176 | void i2c_reset(i2c_t *obj) |
mbed_official | 558:0880f51c4036 | 177 | { |
mbed_official | 601:248b0d2dd755 | 178 | |
mbed_official | 558:0880f51c4036 | 179 | } |
mbed_official | 558:0880f51c4036 | 180 | |
mbed_official | 558:0880f51c4036 | 181 | |
mbed_official | 558:0880f51c4036 | 182 | #endif // DEVICE_I2C |