mbed library sources. Supersedes mbed-src.
Fork of mbed by
Diff: targets/hal/TARGET_WIZNET/TARGET_W7500x/i2c_api.c
- Revision:
- 144:ef7eb2e8f9f7
- Parent:
- 0:9b334a45a8ff
--- a/targets/hal/TARGET_WIZNET/TARGET_W7500x/i2c_api.c Tue Aug 02 14:07:36 2016 +0000 +++ b/targets/hal/TARGET_WIZNET/TARGET_W7500x/i2c_api.c Fri Sep 02 15:07:44 2016 +0100 @@ -1,182 +1,182 @@ -/* mbed Microcontroller Library - ******************************************************************************* - * Copyright (c) 2015 WIZnet Co.,Ltd. All rights reserved. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are met: - * - * 1. Redistributions of source code must retain the above copyright notice, - * this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright notice, - * this list of conditions and the following disclaimer in the documentation - * and/or other materials provided with the distribution. - * 3. Neither the name of ARM Limited nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" - * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE - * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR - * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER - * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, - * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - ******************************************************************************* - */ - -#include "mbed_assert.h" -#include "i2c_api.h" - - -#if DEVICE_I2C - -#include "cmsis.h" -#include "pinmap.h" -#include "PeripheralPins.h" - -#include "wait_api.h" -#include "us_ticker_api.h" -#include "W7500x_i2c.h" - -/* Timeout values for flags and events waiting loops. These timeouts are - not based on accurate values, they just guarantee that the application will - not remain stuck if the I2C communication is corrupted. */ -#define FLAG_TIMEOUT ((int)0x1000) -#define LONG_TIMEOUT ((int)0xFFFF) - - -void i2c_init(i2c_t *obj, PinName sda, PinName scl) -{ - I2C_ConfigStruct conf; - - //Determine the I2C to use - I2CName i2c_sda = (I2CName)pinmap_peripheral(sda, PinMap_I2C_SDA); - I2CName i2c_scl = (I2CName)pinmap_peripheral(scl, PinMap_I2C_SCL); - obj->I2Cx = (I2CName)pinmap_merge(i2c_sda, i2c_scl); - MBED_ASSERT(obj->I2Cx != (I2CName)NC); - - obj->sda = sda; - obj->scl = scl; - obj->ADDRESS = 0x0; - obj->is_setAddress = 0; - - conf.sda = (I2C_PinName)obj->sda; - conf.scl = (I2C_PinName)obj->scl; - - I2C_Init(&conf); -} - -void i2c_frequency(i2c_t *obj, int hz) -{ - -} - -inline int i2c_start(i2c_t *obj) -{ - I2C_ConfigStruct conf; - conf.sda = (I2C_PinName)obj->sda; - conf.scl = (I2C_PinName)obj->scl; - - I2C_Start(&conf); - - return 0; -} - -inline int i2c_stop(i2c_t *obj) -{ - I2C_ConfigStruct conf; - conf.sda = (I2C_PinName)obj->sda; - conf.scl = (I2C_PinName)obj->scl; - - I2C_Stop(&conf); - - return 0; -} - -int i2c_read(i2c_t *obj, int address, char *data, int length, int stop) -{ - I2C_ConfigStruct conf; - - conf.sda = (I2C_PinName)obj->sda; - conf.scl = (I2C_PinName)obj->scl; - - - if(stop) - { - if(I2C_Read(&conf, address, (uint8_t*)data, length) != 0) - return -1; - } - else - { - if(I2C_ReadRepeated(&conf, address, (uint8_t*)data, length) != 0) - return -1; - } - - return length; - -} - -int i2c_write(i2c_t *obj, int address, const char *data, int length, int stop) -{ - I2C_ConfigStruct conf; - - conf.sda = (I2C_PinName)obj->sda; - conf.scl = (I2C_PinName)obj->scl; - - - if(stop) - { - if(I2C_Write(&conf, address, (uint8_t*)data, length) != 0) - return -1; - } - else - { - if(I2C_WriteRepeated(&conf, address, (uint8_t*)data, length) != 0) - return -1; - } - - return length; -} - -int i2c_byte_read(i2c_t *obj, int last) -{ - uint8_t ret; - I2C_ConfigStruct conf; - - conf.sda = (I2C_PinName)obj->sda; - conf.scl = (I2C_PinName)obj->scl; - - ret = I2C_ReadByte(&conf); - - if(last) - I2C_SendNACK(&conf); - else - I2C_SendACK(&conf); - - return (int)ret; -} - -int i2c_byte_write(i2c_t *obj, int data) -{ - I2C_ConfigStruct conf; - - conf.sda = (I2C_PinName)obj->sda; - conf.scl = (I2C_PinName)obj->scl; - - if(I2C_WriteByte(&conf, (uint8_t)data)) // NACK - return 0; - else //ack - return 1; -} - -void i2c_reset(i2c_t *obj) -{ - -} - - -#endif // DEVICE_I2C +/* mbed Microcontroller Library + ******************************************************************************* + * Copyright (c) 2015 WIZnet Co.,Ltd. All rights reserved. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. Neither the name of ARM Limited nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR + * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER + * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, + * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + ******************************************************************************* + */ + +#include "mbed_assert.h" +#include "i2c_api.h" + + +#if DEVICE_I2C + +#include "cmsis.h" +#include "pinmap.h" +#include "PeripheralPins.h" + +#include "wait_api.h" +#include "us_ticker_api.h" +#include "W7500x_i2c.h" + +/* Timeout values for flags and events waiting loops. These timeouts are + not based on accurate values, they just guarantee that the application will + not remain stuck if the I2C communication is corrupted. */ +#define FLAG_TIMEOUT ((int)0x1000) +#define LONG_TIMEOUT ((int)0xFFFF) + + +void i2c_init(i2c_t *obj, PinName sda, PinName scl) +{ + I2C_ConfigStruct conf; + + //Determine the I2C to use + I2CName i2c_sda = (I2CName)pinmap_peripheral(sda, PinMap_I2C_SDA); + I2CName i2c_scl = (I2CName)pinmap_peripheral(scl, PinMap_I2C_SCL); + obj->I2Cx = (I2CName)pinmap_merge(i2c_sda, i2c_scl); + MBED_ASSERT(obj->I2Cx != (I2CName)NC); + + obj->sda = sda; + obj->scl = scl; + obj->ADDRESS = 0x0; + obj->is_setAddress = 0; + + conf.sda = (I2C_PinName)obj->sda; + conf.scl = (I2C_PinName)obj->scl; + + I2C_Init(&conf); +} + +void i2c_frequency(i2c_t *obj, int hz) +{ + +} + +inline int i2c_start(i2c_t *obj) +{ + I2C_ConfigStruct conf; + conf.sda = (I2C_PinName)obj->sda; + conf.scl = (I2C_PinName)obj->scl; + + I2C_Start(&conf); + + return 0; +} + +inline int i2c_stop(i2c_t *obj) +{ + I2C_ConfigStruct conf; + conf.sda = (I2C_PinName)obj->sda; + conf.scl = (I2C_PinName)obj->scl; + + I2C_Stop(&conf); + + return 0; +} + +int i2c_read(i2c_t *obj, int address, char *data, int length, int stop) +{ + I2C_ConfigStruct conf; + + conf.sda = (I2C_PinName)obj->sda; + conf.scl = (I2C_PinName)obj->scl; + + + if(stop) + { + if(I2C_Read(&conf, address, (uint8_t*)data, length) != 0) + return -1; + } + else + { + if(I2C_ReadRepeated(&conf, address, (uint8_t*)data, length) != 0) + return -1; + } + + return length; + +} + +int i2c_write(i2c_t *obj, int address, const char *data, int length, int stop) +{ + I2C_ConfigStruct conf; + + conf.sda = (I2C_PinName)obj->sda; + conf.scl = (I2C_PinName)obj->scl; + + + if(stop) + { + if(I2C_Write(&conf, address, (uint8_t*)data, length) != 0) + return -1; + } + else + { + if(I2C_WriteRepeated(&conf, address, (uint8_t*)data, length) != 0) + return -1; + } + + return length; +} + +int i2c_byte_read(i2c_t *obj, int last) +{ + uint8_t ret; + I2C_ConfigStruct conf; + + conf.sda = (I2C_PinName)obj->sda; + conf.scl = (I2C_PinName)obj->scl; + + ret = I2C_ReadByte(&conf); + + if(last) + I2C_SendNACK(&conf); + else + I2C_SendACK(&conf); + + return (int)ret; +} + +int i2c_byte_write(i2c_t *obj, int data) +{ + I2C_ConfigStruct conf; + + conf.sda = (I2C_PinName)obj->sda; + conf.scl = (I2C_PinName)obj->scl; + + if(I2C_WriteByte(&conf, (uint8_t)data)) // NACK + return 0; + else //ack + return 1; +} + +void i2c_reset(i2c_t *obj) +{ + +} + + +#endif // DEVICE_I2C