04bbba6c12
Rename guhRF platform to osd-merkur-256, previous osd-merkur platform is now osd-merkur-128. Also check that everything is consistent. Add both platforms to the regression tests. Move redundant files in platform dev directory of both platforms to cpu/avr/dev. Note that this probably needs some rework. Already discovered some inconsistency in io definitions of both devices in the avr/io.h includes. Added a workaround in the obvious cases. The platform makefiles now set correct parameters for bootloader and for reading mac-address from flash memory. Factor the flash programming into cpu/avr and platform/osd-merkur* and rework *all* osd example makefiles to use the new settings. Also update all the flash.sh and run.sh to use the new settings. The suli ledstrip modules (and osd example) have also been removed.
132 lines
4.4 KiB
C
132 lines
4.4 KiB
C
/*
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* Copyright (c) 2014, Ingo Gulyas Intembsys
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* This file is part of the Contiki operating system.
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*
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*/
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/**
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* \file
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* I2C driver for ATMEGA128rfa1
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*
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* \author
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* Ingo Gulyas Intembsys
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* office@intembsys.at
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* www.intembsys.at
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*/
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#ifndef I2C_H_
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#define I2C_H_
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#include <stdint.h>
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////////////////////////////////////////////////////////////////////////////////////////////
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// CONFIGURATION SECTION:
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#define I2C_TD 0 // compiler switch: i2c testdriver code
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#define I2C_PORT PORTD
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#define I2C_DDR DDRD
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#define I2C_SCL_PIN 0
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#define I2C_SDA_PIN 1
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// END OF CONFIGURATION SECTION
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////////////////////////////////////////////////////////////////////////////////////////////
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#define I2C_INIT() ({I2C_DDR &= ~((1<<I2C_SCL_PIN) | (1<<I2C_SDA_PIN)); I2C_PORT |= ((1<<I2C_SCL_PIN) | (1<<I2C_SDA_PIN));})
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#define I2C_DEINIT() ({I2C_DDR &= ~((1<<I2C_SCL_PIN) | (1<<I2C_SDA_PIN)); I2C_PORT |= ((1<<I2C_SCL_PIN) | (1<<I2C_SDA_PIN));})
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#define I2C_FREQ_STANDARD I2C_FREQ_50KHZ
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#if F_CPU == 16000000UL
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#define I2C_FREQ_400KHZ 0x03
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#define I2C_FREQ_250KHZ 0x06
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#define I2C_FREQ_100KHZ 0x12
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#define I2C_FREQ_50KHZ 0x26
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#define I2C_FREQ_10KHZ 0xC6
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#else
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#error "NO I2C FREQUENCY DEFINED -> CHECK F_CPU SETTINGS!"
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#endif
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#define I2C_STATUS_REG TWSR
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#define I2C_TX_REG TWDR
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#define I2C_RX_REG TWDR
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#define I2C_START() (TWCR = (1<<TWINT) |(1<<TWSTA) | (1<<TWEN))
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#define I2C_STOP() (TWCR = (1<<TWINT) | (1<<TWEN) | (1<<TWSTO))
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#define I2C_WRITE_BYTE() (TWCR = (1<<TWINT) | (1<<TWEN))
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#define I2C_READ_BYTE_ACK() (TWCR = (1<<TWINT) | (1<<TWEN) | (1<<TWEA))
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#define I2C_READ_BYTE_NACK() (TWCR = (1<<TWINT) | (1<<TWEN))
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#define I2C_STATUS() (I2C_STATUS_REG & I2C_STATUS_MASK)
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#define I2C_STATUS_MASK 0xF8
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#define I2C_STATUS_START 0x08
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#define I2C_STATUS_START_REP 0x10
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#define I2C_STATUS_SLAW_ACK 0x18
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#define I2C_STATUS_DATAW_ACK 0x28
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#define I2C_STATUS_SLAR_ACK 0x40
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#define I2C_STATUS_DATAR_ACK 0x50
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#define I2C_STATUS_DATAR_NACK 0x58
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#define I2C_ADR_WR(adr) ((adr<<1) & ~(1<<0))
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#define I2C_ADR_RD(adr) ((adr<<1) | (1<<0))
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#define I2C_CMD_FLAG_NONE 0x00
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#define I2C_CMD_FLAG_START (1<<0)
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#define I2C_CMD_FLAG_STOP (1<<1)
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#define I2C_OK 0
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#define I2C_ERROR_DRIVER -1
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#define I2C_ERROR_TIMEOUT -2
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#define I2C_ERROR_START -3
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#define I2C_ERROR_WRITE -4
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#define I2C_ERROR_READ -5
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#define I2C_IOCTL_CMD_SET_FREQ 0x01
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typedef struct i2c_driver i2c_driver;
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struct i2c_driver
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{
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int8_t (*ioctl)(const i2c_driver* const me, uint8_t cmd, uint8_t arg);
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int8_t (*read)(const i2c_driver* const me, uint8_t cmd_flags, uint8_t* buffer, uint8_t len);
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int8_t (*write)(const i2c_driver* const me, uint8_t cmd_flags, const uint8_t* data, uint8_t len);
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};
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i2c_driver* i2c_open(void);
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void i2c_close(i2c_driver* const me);
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void i2c_reset(void);
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#endif /* I2C_H_ */
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