Convert remaining PS2AVRGB boards to I2C WS2812 driver (#7245)
* Convert remaining PS2AVRGB boards to I2C WS2812 driver * Add back functions to make the custom matrices happyrefactor_process_record_kb_user
parent
a4d138645f
commit
3a215195ed
@ -1,106 +0,0 @@ |
||||
/*
|
||||
Copyright 2016 Luiz Ribeiro <luizribeiro@gmail.com> |
||||
|
||||
This program is free software: you can redistribute it and/or modify |
||||
it under the terms of the GNU General Public License as published by |
||||
the Free Software Foundation, either version 2 of the License, or |
||||
(at your option) any later version. |
||||
|
||||
This program is distributed in the hope that it will be useful, |
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of |
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
||||
GNU General Public License for more details. |
||||
|
||||
You should have received a copy of the GNU General Public License |
||||
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
*/ |
||||
|
||||
// Please do not modify this file
|
||||
|
||||
#include <avr/io.h> |
||||
#include <util/twi.h> |
||||
|
||||
#include "i2c.h" |
||||
|
||||
void i2c_set_bitrate(uint16_t bitrate_khz) { |
||||
uint8_t bitrate_div = ((F_CPU / 1000l) / bitrate_khz); |
||||
if (bitrate_div >= 16) { |
||||
bitrate_div = (bitrate_div - 16) / 2; |
||||
} |
||||
TWBR = bitrate_div; |
||||
} |
||||
|
||||
void i2c_init(void) { |
||||
// set pull-up resistors on I2C bus pins
|
||||
PORTC |= 0b11; |
||||
|
||||
i2c_set_bitrate(400); |
||||
|
||||
// enable TWI (two-wire interface)
|
||||
TWCR |= (1 << TWEN); |
||||
|
||||
// enable TWI interrupt and slave address ACK
|
||||
TWCR |= (1 << TWIE); |
||||
TWCR |= (1 << TWEA); |
||||
} |
||||
|
||||
uint8_t i2c_start(uint8_t address) { |
||||
// reset TWI control register
|
||||
TWCR = 0; |
||||
|
||||
// begin transmission and wait for it to end
|
||||
TWCR = (1<<TWINT) | (1<<TWSTA) | (1<<TWEN); |
||||
while (!(TWCR & (1<<TWINT))); |
||||
|
||||
// check if the start condition was successfully transmitted
|
||||
if ((TWSR & 0xF8) != TW_START) { |
||||
return 1; |
||||
} |
||||
|
||||
// transmit address and wait
|
||||
TWDR = address; |
||||
TWCR = (1<<TWINT) | (1<<TWEN); |
||||
while (!(TWCR & (1<<TWINT))); |
||||
|
||||
// check if the device has acknowledged the READ / WRITE mode
|
||||
uint8_t twst = TW_STATUS & 0xF8; |
||||
if ((twst != TW_MT_SLA_ACK) && (twst != TW_MR_SLA_ACK)) { |
||||
return 1; |
||||
} |
||||
|
||||
return 0; |
||||
} |
||||
|
||||
void i2c_stop(void) { |
||||
TWCR = (1<<TWINT) | (1<<TWEN) | (1<<TWSTO); |
||||
} |
||||
|
||||
uint8_t i2c_write(uint8_t data) { |
||||
TWDR = data; |
||||
|
||||
// transmit data and wait
|
||||
TWCR = (1<<TWINT) | (1<<TWEN); |
||||
while (!(TWCR & (1<<TWINT))); |
||||
|
||||
if ((TWSR & 0xF8) != TW_MT_DATA_ACK) { |
||||
return 1; |
||||
} |
||||
|
||||
return 0; |
||||
} |
||||
|
||||
uint8_t i2c_send(uint8_t address, uint8_t *data, uint16_t length) { |
||||
if (i2c_start(address)) { |
||||
return 1; |
||||
} |
||||
|
||||
for (uint16_t i = 0; i < length; i++) { |
||||
if (i2c_write(data[i])) { |
||||
return 1; |
||||
} |
||||
} |
||||
|
||||
i2c_stop(); |
||||
|
||||
return 0; |
||||
} |
@ -1,27 +0,0 @@ |
||||
/*
|
||||
Copyright 2016 Luiz Ribeiro <luizribeiro@gmail.com> |
||||
|
||||
This program is free software: you can redistribute it and/or modify |
||||
it under the terms of the GNU General Public License as published by |
||||
the Free Software Foundation, either version 2 of the License, or |
||||
(at your option) any later version. |
||||
|
||||
This program is distributed in the hope that it will be useful, |
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of |
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
||||
GNU General Public License for more details. |
||||
|
||||
You should have received a copy of the GNU General Public License |
||||
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
*/ |
||||
|
||||
// Please do not modify this file
|
||||
|
||||
#ifndef __I2C_H__ |
||||
#define __I2C_H__ |
||||
|
||||
void i2c_init(void); |
||||
void i2c_set_bitrate(uint16_t bitrate_khz); |
||||
uint8_t i2c_send(uint8_t address, uint8_t *data, uint16_t length); |
||||
|
||||
#endif |
@ -1,106 +0,0 @@ |
||||
/*
|
||||
Copyright 2016 Luiz Ribeiro <luizribeiro@gmail.com> |
||||
|
||||
This program is free software: you can redistribute it and/or modify |
||||
it under the terms of the GNU General Public License as published by |
||||
the Free Software Foundation, either version 2 of the License, or |
||||
(at your option) any later version. |
||||
|
||||
This program is distributed in the hope that it will be useful, |
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of |
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
||||
GNU General Public License for more details. |
||||
|
||||
You should have received a copy of the GNU General Public License |
||||
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
*/ |
||||
|
||||
// Please do not modify this file
|
||||
|
||||
#include <avr/io.h> |
||||
#include <util/twi.h> |
||||
|
||||
#include "i2c.h" |
||||
|
||||
void i2c_set_bitrate(uint16_t bitrate_khz) { |
||||
uint8_t bitrate_div = ((F_CPU / 1000l) / bitrate_khz); |
||||
if (bitrate_div >= 16) { |
||||
bitrate_div = (bitrate_div - 16) / 2; |
||||
} |
||||
TWBR = bitrate_div; |
||||
} |
||||
|
||||
void i2c_init(void) { |
||||
// set pull-up resistors on I2C bus pins
|
||||
PORTC |= 0b11; |
||||
|
||||
i2c_set_bitrate(400); |
||||
|
||||
// enable TWI (two-wire interface)
|
||||
TWCR |= (1 << TWEN); |
||||
|
||||
// enable TWI interrupt and slave address ACK
|
||||
TWCR |= (1 << TWIE); |
||||
TWCR |= (1 << TWEA); |
||||
} |
||||
|
||||
uint8_t i2c_start(uint8_t address) { |
||||
// reset TWI control register
|
||||
TWCR = 0; |
||||
|
||||
// begin transmission and wait for it to end
|
||||
TWCR = (1<<TWINT) | (1<<TWSTA) | (1<<TWEN); |
||||
while (!(TWCR & (1<<TWINT))); |
||||
|
||||
// check if the start condition was successfully transmitted
|
||||
if ((TWSR & 0xF8) != TW_START) { |
||||
return 1; |
||||
} |
||||
|
||||
// transmit address and wait
|
||||
TWDR = address; |
||||
TWCR = (1<<TWINT) | (1<<TWEN); |
||||
while (!(TWCR & (1<<TWINT))); |
||||
|
||||
// check if the device has acknowledged the READ / WRITE mode
|
||||
uint8_t twst = TW_STATUS & 0xF8; |
||||
if ((twst != TW_MT_SLA_ACK) && (twst != TW_MR_SLA_ACK)) { |
||||
return 1; |
||||
} |
||||
|
||||
return 0; |
||||
} |
||||
|
||||
void i2c_stop(void) { |
||||
TWCR = (1<<TWINT) | (1<<TWEN) | (1<<TWSTO); |
||||
} |
||||
|
||||
uint8_t i2c_write(uint8_t data) { |
||||
TWDR = data; |
||||
|
||||
// transmit data and wait
|
||||
TWCR = (1<<TWINT) | (1<<TWEN); |
||||
while (!(TWCR & (1<<TWINT))); |
||||
|
||||
if ((TWSR & 0xF8) != TW_MT_DATA_ACK) { |
||||
return 1; |
||||
} |
||||
|
||||
return 0; |
||||
} |
||||
|
||||
uint8_t i2c_send(uint8_t address, uint8_t *data, uint16_t length) { |
||||
if (i2c_start(address)) { |
||||
return 1; |
||||
} |
||||
|
||||
for (uint16_t i = 0; i < length; i++) { |
||||
if (i2c_write(data[i])) { |
||||
return 1; |
||||
} |
||||
} |
||||
|
||||
i2c_stop(); |
||||
|
||||
return 0; |
||||
} |
@ -1,27 +0,0 @@ |
||||
/*
|
||||
Copyright 2016 Luiz Ribeiro <luizribeiro@gmail.com> |
||||
|
||||
This program is free software: you can redistribute it and/or modify |
||||
it under the terms of the GNU General Public License as published by |
||||
the Free Software Foundation, either version 2 of the License, or |
||||
(at your option) any later version. |
||||
|
||||
This program is distributed in the hope that it will be useful, |
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of |
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
||||
GNU General Public License for more details. |
||||
|
||||
You should have received a copy of the GNU General Public License |
||||
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
*/ |
||||
|
||||
// Please do not modify this file
|
||||
|
||||
#ifndef __I2C_H__ |
||||
#define __I2C_H__ |
||||
|
||||
void i2c_init(void); |
||||
void i2c_set_bitrate(uint16_t bitrate_khz); |
||||
uint8_t i2c_send(uint8_t address, uint8_t *data, uint16_t length); |
||||
|
||||
#endif |
@ -1,104 +0,0 @@ |
||||
/*
|
||||
Copyright 2016 Luiz Ribeiro <luizribeiro@gmail.com> |
||||
|
||||
This program is free software: you can redistribute it and/or modify |
||||
it under the terms of the GNU General Public License as published by |
||||
the Free Software Foundation, either version 2 of the License, or |
||||
(at your option) any later version. |
||||
|
||||
This program is distributed in the hope that it will be useful, |
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of |
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
||||
GNU General Public License for more details. |
||||
|
||||
You should have received a copy of the GNU General Public License |
||||
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
*/ |
||||
|
||||
#include <avr/io.h> |
||||
#include <util/twi.h> |
||||
|
||||
#include "i2c.h" |
||||
|
||||
void i2c_set_bitrate(uint16_t bitrate_khz) { |
||||
uint8_t bitrate_div = ((F_CPU / 1000l) / bitrate_khz); |
||||
if (bitrate_div >= 16) { |
||||
bitrate_div = (bitrate_div - 16) / 2; |
||||
} |
||||
TWBR = bitrate_div; |
||||
} |
||||
|
||||
void i2c_init(void) { |
||||
// set pull-up resistors on I2C bus pins
|
||||
PORTC |= 0b11; |
||||
|
||||
i2c_set_bitrate(400); |
||||
|
||||
// enable TWI (two-wire interface)
|
||||
TWCR |= (1 << TWEN); |
||||
|
||||
// enable TWI interrupt and slave address ACK
|
||||
TWCR |= (1 << TWIE); |
||||
TWCR |= (1 << TWEA); |
||||
} |
||||
|
||||
uint8_t i2c_start(uint8_t address) { |
||||
// reset TWI control register
|
||||
TWCR = 0; |
||||
|
||||
// begin transmission and wait for it to end
|
||||
TWCR = (1<<TWINT) | (1<<TWSTA) | (1<<TWEN); |
||||
while (!(TWCR & (1<<TWINT))); |
||||
|
||||
// check if the start condition was successfully transmitted
|
||||
if ((TWSR & 0xF8) != TW_START) { |
||||
return 1; |
||||
} |
||||
|
||||
// transmit address and wait
|
||||
TWDR = address; |
||||
TWCR = (1<<TWINT) | (1<<TWEN); |
||||
while (!(TWCR & (1<<TWINT))); |
||||
|
||||
// check if the device has acknowledged the READ / WRITE mode
|
||||
uint8_t twst = TW_STATUS & 0xF8; |
||||
if ((twst != TW_MT_SLA_ACK) && (twst != TW_MR_SLA_ACK)) { |
||||
return 1; |
||||
} |
||||
|
||||
return 0; |
||||
} |
||||
|
||||
void i2c_stop(void) { |
||||
TWCR = (1<<TWINT) | (1<<TWEN) | (1<<TWSTO); |
||||
} |
||||
|
||||
uint8_t i2c_write(uint8_t data) { |
||||
TWDR = data; |
||||
|
||||
// transmit data and wait
|
||||
TWCR = (1<<TWINT) | (1<<TWEN); |
||||
while (!(TWCR & (1<<TWINT))); |
||||
|
||||
if ((TWSR & 0xF8) != TW_MT_DATA_ACK) { |
||||
return 1; |
||||
} |
||||
|
||||
return 0; |
||||
} |
||||
|
||||
uint8_t i2c_send(uint8_t address, uint8_t *data, uint16_t length) { |
||||
if (i2c_start(address)) { |
||||
return 1; |
||||
} |
||||
|
||||
for (uint16_t i = 0; i < length; i++) { |
||||
if (i2c_write(data[i])) { |
||||
return 1; |
||||
} |
||||
} |
||||
|
||||
i2c_stop(); |
||||
|
||||
return 0; |
||||
} |
@ -1,25 +0,0 @@ |
||||
/*
|
||||
Copyright 2016 Luiz Ribeiro <luizribeiro@gmail.com> |
||||
|
||||
This program is free software: you can redistribute it and/or modify |
||||
it under the terms of the GNU General Public License as published by |
||||
the Free Software Foundation, either version 2 of the License, or |
||||
(at your option) any later version. |
||||
|
||||
This program is distributed in the hope that it will be useful, |
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of |
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
||||
GNU General Public License for more details. |
||||
|
||||
You should have received a copy of the GNU General Public License |
||||
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
*/ |
||||
|
||||
#ifndef __I2C_H__ |
||||
#define __I2C_H__ |
||||
|
||||
void i2c_init(void); |
||||
void i2c_set_bitrate(uint16_t bitrate_khz); |
||||
uint8_t i2c_send(uint8_t address, uint8_t *data, uint16_t length); |
||||
|
||||
#endif |
@ -1,104 +0,0 @@ |
||||
/*
|
||||
Copyright 2016 Luiz Ribeiro <luizribeiro@gmail.com> |
||||
|
||||
This program is free software: you can redistribute it and/or modify |
||||
it under the terms of the GNU General Public License as published by |
||||
the Free Software Foundation, either version 2 of the License, or |
||||
(at your option) any later version. |
||||
|
||||
This program is distributed in the hope that it will be useful, |
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of |
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
||||
GNU General Public License for more details. |
||||
|
||||
You should have received a copy of the GNU General Public License |
||||
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
*/ |
||||
|
||||
#include <avr/io.h> |
||||
#include <util/twi.h> |
||||
|
||||
#include "i2c.h" |
||||
|
||||
void i2c_set_bitrate(uint16_t bitrate_khz) { |
||||
uint8_t bitrate_div = ((F_CPU / 1000l) / bitrate_khz); |
||||
if (bitrate_div >= 16) { |
||||
bitrate_div = (bitrate_div - 16) / 2; |
||||
} |
||||
TWBR = bitrate_div; |
||||
} |
||||
|
||||
void i2c_init(void) { |
||||
// set pull-up resistors on I2C bus pins
|
||||
PORTC |= 0b11; |
||||
|
||||
i2c_set_bitrate(400); |
||||
|
||||
// enable TWI (two-wire interface)
|
||||
TWCR |= (1 << TWEN); |
||||
|
||||
// enable TWI interrupt and slave address ACK
|
||||
TWCR |= (1 << TWIE); |
||||
TWCR |= (1 << TWEA); |
||||
} |
||||
|
||||
uint8_t i2c_start(uint8_t address) { |
||||
// reset TWI control register
|
||||
TWCR = 0; |
||||
|
||||
// begin transmission and wait for it to end
|
||||
TWCR = (1<<TWINT) | (1<<TWSTA) | (1<<TWEN); |
||||
while (!(TWCR & (1<<TWINT))); |
||||
|
||||
// check if the start condition was successfully transmitted
|
||||
if ((TWSR & 0xF8) != TW_START) { |
||||
return 1; |
||||
} |
||||
|
||||
// transmit address and wait
|
||||
TWDR = address; |
||||
TWCR = (1<<TWINT) | (1<<TWEN); |
||||
while (!(TWCR & (1<<TWINT))); |
||||
|
||||
// check if the device has acknowledged the READ / WRITE mode
|
||||
uint8_t twst = TW_STATUS & 0xF8; |
||||
if ((twst != TW_MT_SLA_ACK) && (twst != TW_MR_SLA_ACK)) { |
||||
return 1; |
||||
} |
||||
|
||||
return 0; |
||||
} |
||||
|
||||
void i2c_stop(void) { |
||||
TWCR = (1<<TWINT) | (1<<TWEN) | (1<<TWSTO); |
||||
} |
||||
|
||||
uint8_t i2c_write(uint8_t data) { |
||||
TWDR = data; |
||||
|
||||
// transmit data and wait
|
||||
TWCR = (1<<TWINT) | (1<<TWEN); |
||||
while (!(TWCR & (1<<TWINT))); |
||||
|
||||
if ((TWSR & 0xF8) != TW_MT_DATA_ACK) { |
||||
return 1; |
||||
} |
||||
|
||||
return 0; |
||||
} |
||||
|
||||
uint8_t i2c_send(uint8_t address, uint8_t *data, uint16_t length) { |
||||
if (i2c_start(address)) { |
||||
return 1; |
||||
} |
||||
|
||||
for (uint16_t i = 0; i < length; i++) { |
||||
if (i2c_write(data[i])) { |
||||
return 1; |
||||
} |
||||
} |
||||
|
||||
i2c_stop(); |
||||
|
||||
return 0; |
||||
} |
@ -1,22 +0,0 @@ |
||||
/*
|
||||
Copyright 2016 Luiz Ribeiro <luizribeiro@gmail.com> |
||||
This program is free software: you can redistribute it and/or modify |
||||
it under the terms of the GNU General Public License as published by |
||||
the Free Software Foundation, either version 2 of the License, or |
||||
(at your option) any later version. |
||||
This program is distributed in the hope that it will be useful, |
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of |
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
||||
GNU General Public License for more details. |
||||
You should have received a copy of the GNU General Public License |
||||
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
*/ |
||||
|
||||
#ifndef __I2C_H__ |
||||
#define __I2C_H__ |
||||
|
||||
void i2c_init(void); |
||||
void i2c_set_bitrate(uint16_t bitrate_khz); |
||||
uint8_t i2c_send(uint8_t address, uint8_t *data, uint16_t length); |
||||
|
||||
#endif |
@ -1,106 +0,0 @@ |
||||
/*
|
||||
Copyright 2016 Luiz Ribeiro <luizribeiro@gmail.com> |
||||
|
||||
This program is free software: you can redistribute it and/or modify |
||||
it under the terms of the GNU General Public License as published by |
||||
the Free Software Foundation, either version 2 of the License, or |
||||
(at your option) any later version. |
||||
|
||||
This program is distributed in the hope that it will be useful, |
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of |
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
||||
GNU General Public License for more details. |
||||
|
||||
You should have received a copy of the GNU General Public License |
||||
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
*/ |
||||
|
||||
// Please do not modify this file
|
||||
|
||||
#include <avr/io.h> |
||||
#include <util/twi.h> |
||||
|
||||
#include "i2c.h" |
||||
|
||||
void i2c_set_bitrate(uint16_t bitrate_khz) { |
||||
uint8_t bitrate_div = ((F_CPU / 1000l) / bitrate_khz); |
||||
if (bitrate_div >= 16) { |
||||
bitrate_div = (bitrate_div - 16) / 2; |
||||
} |
||||
TWBR = bitrate_div; |
||||
} |
||||
|
||||
void i2c_init(void) { |
||||
// set pull-up resistors on I2C bus pins
|
||||
PORTC |= 0b11; |
||||
|
||||
i2c_set_bitrate(400); |
||||
|
||||
// enable TWI (two-wire interface)
|
||||
TWCR |= (1 << TWEN); |
||||
|
||||
// enable TWI interrupt and slave address ACK
|
||||
TWCR |= (1 << TWIE); |
||||
TWCR |= (1 << TWEA); |
||||
} |
||||
|
||||
uint8_t i2c_start(uint8_t address) { |
||||
// reset TWI control register
|
||||
TWCR = 0; |
||||
|
||||
// begin transmission and wait for it to end
|
||||
TWCR = (1<<TWINT) | (1<<TWSTA) | (1<<TWEN); |
||||
while (!(TWCR & (1<<TWINT))); |
||||
|
||||
// check if the start condition was successfully transmitted
|
||||
if ((TWSR & 0xF8) != TW_START) { |
||||
return 1; |
||||
} |
||||
|
||||
// transmit address and wait
|
||||
TWDR = address; |
||||
TWCR = (1<<TWINT) | (1<<TWEN); |
||||
while (!(TWCR & (1<<TWINT))); |
||||
|
||||
// check if the device has acknowledged the READ / WRITE mode
|
||||
uint8_t twst = TW_STATUS & 0xF8; |
||||
if ((twst != TW_MT_SLA_ACK) && (twst != TW_MR_SLA_ACK)) { |
||||
return 1; |
||||
} |
||||
|
||||
return 0; |
||||
} |
||||
|
||||
void i2c_stop(void) { |
||||
TWCR = (1<<TWINT) | (1<<TWEN) | (1<<TWSTO); |
||||
} |
||||
|
||||
uint8_t i2c_write(uint8_t data) { |
||||
TWDR = data; |
||||
|
||||
// transmit data and wait
|
||||
TWCR = (1<<TWINT) | (1<<TWEN); |
||||
while (!(TWCR & (1<<TWINT))); |
||||
|
||||
if ((TWSR & 0xF8) != TW_MT_DATA_ACK) { |
||||
return 1; |
||||
} |
||||
|
||||
return 0; |
||||
} |
||||
|
||||
uint8_t i2c_send(uint8_t address, uint8_t *data, uint16_t length) { |
||||
if (i2c_start(address)) { |
||||
return 1; |
||||
} |
||||
|
||||
for (uint16_t i = 0; i < length; i++) { |
||||
if (i2c_write(data[i])) { |
||||
return 1; |
||||
} |
||||
} |
||||
|
||||
i2c_stop(); |
||||
|
||||
return 0; |
||||
} |
@ -1,27 +0,0 @@ |
||||
/*
|
||||
Copyright 2016 Luiz Ribeiro <luizribeiro@gmail.com> |
||||
|
||||
This program is free software: you can redistribute it and/or modify |
||||
it under the terms of the GNU General Public License as published by |
||||
the Free Software Foundation, either version 2 of the License, or |
||||
(at your option) any later version. |
||||
|
||||
This program is distributed in the hope that it will be useful, |
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of |
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
||||
GNU General Public License for more details. |
||||
|
||||
You should have received a copy of the GNU General Public License |
||||
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
*/ |
||||
|
||||
// Please do not modify this file
|
||||
|
||||
#ifndef __I2C_H__ |
||||
#define __I2C_H__ |
||||
|
||||
void i2c_init(void); |
||||
void i2c_set_bitrate(uint16_t bitrate_khz); |
||||
uint8_t i2c_send(uint8_t address, uint8_t *data, uint16_t length); |
||||
|
||||
#endif |
@ -1,104 +0,0 @@ |
||||
/*
|
||||
Copyright 2016 Luiz Ribeiro <luizribeiro@gmail.com> |
||||
|
||||
This program is free software: you can redistribute it and/or modify |
||||
it under the terms of the GNU General Public License as published by |
||||
the Free Software Foundation, either version 2 of the License, or |
||||
(at your option) any later version. |
||||
|
||||
This program is distributed in the hope that it will be useful, |
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of |
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
||||
GNU General Public License for more details. |
||||
|
||||
You should have received a copy of the GNU General Public License |
||||
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
*/ |
||||
|
||||
#include <avr/io.h> |
||||
#include <util/twi.h> |
||||
|
||||
#include "i2c.h" |
||||
|
||||
void i2c_set_bitrate(uint16_t bitrate_khz) { |
||||
uint8_t bitrate_div = ((F_CPU / 1000l) / bitrate_khz); |
||||
if (bitrate_div >= 16) { |
||||
bitrate_div = (bitrate_div - 16) / 2; |
||||
} |
||||
TWBR = bitrate_div; |
||||
} |
||||
|
||||
void i2c_init(void) { |
||||
// set pull-up resistors on I2C bus pins
|
||||
PORTC |= 0b11; |
||||
|
||||
i2c_set_bitrate(400); |
||||
|
||||
// enable TWI (two-wire interface)
|
||||
TWCR |= (1 << TWEN); |
||||
|
||||
// enable TWI interrupt and slave address ACK
|
||||
TWCR |= (1 << TWIE); |
||||
TWCR |= (1 << TWEA); |
||||
} |
||||
|
||||
uint8_t i2c_start(uint8_t address) { |
||||
// reset TWI control register
|
||||
TWCR = 0; |
||||
|
||||
// begin transmission and wait for it to end
|
||||
TWCR = (1<<TWINT) | (1<<TWSTA) | (1<<TWEN); |
||||
while (!(TWCR & (1<<TWINT))); |
||||
|
||||
// check if the start condition was successfully transmitted
|
||||
if ((TWSR & 0xF8) != TW_START) { |
||||
return 1; |
||||
} |
||||
|
||||
// transmit address and wait
|
||||
TWDR = address; |
||||
TWCR = (1<<TWINT) | (1<<TWEN); |
||||
while (!(TWCR & (1<<TWINT))); |
||||
|
||||
// check if the device has acknowledged the READ / WRITE mode
|
||||
uint8_t twst = TW_STATUS & 0xF8; |
||||
if ((twst != TW_MT_SLA_ACK) && (twst != TW_MR_SLA_ACK)) { |
||||
return 1; |
||||
} |
||||
|
||||
return 0; |
||||
} |
||||
|
||||
void i2c_stop(void) { |
||||
TWCR = (1<<TWINT) | (1<<TWEN) | (1<<TWSTO); |
||||
} |
||||
|
||||
uint8_t i2c_write(uint8_t data) { |
||||
TWDR = data; |
||||
|
||||
// transmit data and wait
|
||||
TWCR = (1<<TWINT) | (1<<TWEN); |
||||
while (!(TWCR & (1<<TWINT))); |
||||
|
||||
if ((TWSR & 0xF8) != TW_MT_DATA_ACK) { |
||||
return 1; |
||||
} |
||||
|
||||
return 0; |
||||
} |
||||
|
||||
uint8_t i2c_send(uint8_t address, uint8_t *data, uint16_t length) { |
||||
if (i2c_start(address)) { |
||||
return 1; |
||||
} |
||||
|
||||
for (uint16_t i = 0; i < length; i++) { |
||||
if (i2c_write(data[i])) { |
||||
return 1; |
||||
} |
||||
} |
||||
|
||||
i2c_stop(); |
||||
|
||||
return 0; |
||||
} |
@ -1,25 +0,0 @@ |
||||
/*
|
||||
Copyright 2016 Luiz Ribeiro <luizribeiro@gmail.com> |
||||
|
||||
This program is free software: you can redistribute it and/or modify |
||||
it under the terms of the GNU General Public License as published by |
||||
the Free Software Foundation, either version 2 of the License, or |
||||
(at your option) any later version. |
||||
|
||||
This program is distributed in the hope that it will be useful, |
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of |
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
||||
GNU General Public License for more details. |
||||
|
||||
You should have received a copy of the GNU General Public License |
||||
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
*/ |
||||
|
||||
#ifndef __I2C_H__ |
||||
#define __I2C_H__ |
||||
|
||||
void i2c_init(void); |
||||
void i2c_set_bitrate(uint16_t bitrate_khz); |
||||
uint8_t i2c_send(uint8_t address, uint8_t *data, uint16_t length); |
||||
|
||||
#endif |
@ -1,106 +0,0 @@ |
||||
/*
|
||||
Copyright 2016 Luiz Ribeiro <luizribeiro@gmail.com> |
||||
|
||||
This program is free software: you can redistribute it and/or modify |
||||
it under the terms of the GNU General Public License as published by |
||||
the Free Software Foundation, either version 2 of the License, or |
||||
(at your option) any later version. |
||||
|
||||
This program is distributed in the hope that it will be useful, |
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of |
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
||||
GNU General Public License for more details. |
||||
|
||||
You should have received a copy of the GNU General Public License |
||||
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
*/ |
||||
|
||||
// Please do not modify this file
|
||||
|
||||
#include <avr/io.h> |
||||
#include <util/twi.h> |
||||
|
||||
#include "i2c.h" |
||||
|
||||
void i2c_set_bitrate(uint16_t bitrate_khz) { |
||||
uint8_t bitrate_div = ((F_CPU / 1000l) / bitrate_khz); |
||||
if (bitrate_div >= 16) { |
||||
bitrate_div = (bitrate_div - 16) / 2; |
||||
} |
||||
TWBR = bitrate_div; |
||||
} |
||||
|
||||
void i2c_init(void) { |
||||
// set pull-up resistors on I2C bus pins
|
||||
PORTC |= 0b11; |
||||
|
||||
i2c_set_bitrate(400); |
||||
|
||||
// enable TWI (two-wire interface)
|
||||
TWCR |= (1 << TWEN); |
||||
|
||||
// enable TWI interrupt and slave address ACK
|
||||
TWCR |= (1 << TWIE); |
||||
TWCR |= (1 << TWEA); |
||||
} |
||||
|
||||
uint8_t i2c_start(uint8_t address) { |
||||
// reset TWI control register
|
||||
TWCR = 0; |
||||
|
||||
// begin transmission and wait for it to end
|
||||
TWCR = (1<<TWINT) | (1<<TWSTA) | (1<<TWEN); |
||||
while (!(TWCR & (1<<TWINT))); |
||||
|
||||
// check if the start condition was successfully transmitted
|
||||
if ((TWSR & 0xF8) != TW_START) { |
||||
return 1; |
||||
} |
||||
|
||||
// transmit address and wait
|
||||
TWDR = address; |
||||
TWCR = (1<<TWINT) | (1<<TWEN); |
||||
while (!(TWCR & (1<<TWINT))); |
||||
|
||||
// check if the device has acknowledged the READ / WRITE mode
|
||||
uint8_t twst = TW_STATUS & 0xF8; |
||||
if ((twst != TW_MT_SLA_ACK) && (twst != TW_MR_SLA_ACK)) { |
||||
return 1; |
||||
} |
||||
|
||||
return 0; |
||||
} |
||||
|
||||
void i2c_stop(void) { |
||||
TWCR = (1<<TWINT) | (1<<TWEN) | (1<<TWSTO); |
||||
} |
||||
|
||||
uint8_t i2c_write(uint8_t data) { |
||||
TWDR = data; |
||||
|
||||
// transmit data and wait
|
||||
TWCR = (1<<TWINT) | (1<<TWEN); |
||||
while (!(TWCR & (1<<TWINT))); |
||||
|
||||
if ((TWSR & 0xF8) != TW_MT_DATA_ACK) { |
||||
return 1; |
||||
} |
||||
|
||||
return 0; |
||||
} |
||||
|
||||
uint8_t i2c_send(uint8_t address, uint8_t *data, uint16_t length) { |
||||
if (i2c_start(address)) { |
||||
return 1; |
||||
} |
||||
|
||||
for (uint16_t i = 0; i < length; i++) { |
||||
if (i2c_write(data[i])) { |
||||
return 1; |
||||
} |
||||
} |
||||
|
||||
i2c_stop(); |
||||
|
||||
return 0; |
||||
} |
@ -1,27 +0,0 @@ |
||||
/*
|
||||
Copyright 2016 Luiz Ribeiro <luizribeiro@gmail.com> |
||||
|
||||
This program is free software: you can redistribute it and/or modify |
||||
it under the terms of the GNU General Public License as published by |
||||
the Free Software Foundation, either version 2 of the License, or |
||||
(at your option) any later version. |
||||
|
||||
This program is distributed in the hope that it will be useful, |
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of |
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
||||
GNU General Public License for more details. |
||||
|
||||
You should have received a copy of the GNU General Public License |
||||
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
*/ |
||||
|
||||
// Please do not modify this file
|
||||
|
||||
#ifndef __I2C_H__ |
||||
#define __I2C_H__ |
||||
|
||||
void i2c_init(void); |
||||
void i2c_set_bitrate(uint16_t bitrate_khz); |
||||
uint8_t i2c_send(uint8_t address, uint8_t *data, uint16_t length); |
||||
|
||||
#endif |
@ -1,106 +0,0 @@ |
||||
/*
|
||||
Copyright 2016 Luiz Ribeiro <luizribeiro@gmail.com> |
||||
|
||||
This program is free software: you can redistribute it and/or modify |
||||
it under the terms of the GNU General Public License as published by |
||||
the Free Software Foundation, either version 2 of the License, or |
||||
(at your option) any later version. |
||||
|
||||
This program is distributed in the hope that it will be useful, |
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of |
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
||||
GNU General Public License for more details. |
||||
|
||||
You should have received a copy of the GNU General Public License |
||||
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
*/ |
||||
|
||||
// Please do not modify this file
|
||||
|
||||
#include <avr/io.h> |
||||
#include <util/twi.h> |
||||
|
||||
#include "i2c.h" |
||||
|
||||
void i2c_set_bitrate(uint16_t bitrate_khz) { |
||||
uint8_t bitrate_div = ((F_CPU / 1000l) / bitrate_khz); |
||||
if (bitrate_div >= 16) { |
||||
bitrate_div = (bitrate_div - 16) / 2; |
||||
} |
||||
TWBR = bitrate_div; |
||||
} |
||||
|
||||
void i2c_init(void) { |
||||
// set pull-up resistors on I2C bus pins
|
||||
PORTC |= 0b11; |
||||
|
||||
i2c_set_bitrate(400); |
||||
|
||||
// enable TWI (two-wire interface)
|
||||
TWCR |= (1 << TWEN); |
||||
|
||||
// enable TWI interrupt and slave address ACK
|
||||
TWCR |= (1 << TWIE); |
||||
TWCR |= (1 << TWEA); |
||||
} |
||||
|
||||
uint8_t i2c_start(uint8_t address) { |
||||
// reset TWI control register
|
||||
TWCR = 0; |
||||
|
||||
// begin transmission and wait for it to end
|
||||
TWCR = (1<<TWINT) | (1<<TWSTA) | (1<<TWEN); |
||||
while (!(TWCR & (1<<TWINT))); |
||||
|
||||
// check if the start condition was successfully transmitted
|
||||
if ((TWSR & 0xF8) != TW_START) { |
||||
return 1; |
||||
} |
||||
|
||||
// transmit address and wait
|
||||
TWDR = address; |
||||
TWCR = (1<<TWINT) | (1<<TWEN); |
||||
while (!(TWCR & (1<<TWINT))); |
||||
|
||||
// check if the device has acknowledged the READ / WRITE mode
|
||||
uint8_t twst = TW_STATUS & 0xF8; |
||||
if ((twst != TW_MT_SLA_ACK) && (twst != TW_MR_SLA_ACK)) { |
||||
return 1; |
||||
} |
||||
|
||||
return 0; |
||||
} |
||||
|
||||
void i2c_stop(void) { |
||||
TWCR = (1<<TWINT) | (1<<TWEN) | (1<<TWSTO); |
||||
} |
||||
|
||||
uint8_t i2c_write(uint8_t data) { |
||||
TWDR = data; |
||||
|
||||
// transmit data and wait
|
||||
TWCR = (1<<TWINT) | (1<<TWEN); |
||||
while (!(TWCR & (1<<TWINT))); |
||||
|
||||
if ((TWSR & 0xF8) != TW_MT_DATA_ACK) { |
||||
return 1; |
||||
} |
||||
|
||||
return 0; |
||||
} |
||||
|
||||
uint8_t i2c_send(uint8_t address, uint8_t *data, uint16_t length) { |
||||
if (i2c_start(address)) { |
||||
return 1; |
||||
} |
||||
|
||||
for (uint16_t i = 0; i < length; i++) { |
||||
if (i2c_write(data[i])) { |
||||
return 1; |
||||
} |
||||
} |
||||
|
||||
i2c_stop(); |
||||
|
||||
return 0; |
||||
} |
@ -1,25 +0,0 @@ |
||||
/*
|
||||
Copyright 2016 Luiz Ribeiro <luizribeiro@gmail.com> |
||||
|
||||
This program is free software: you can redistribute it and/or modify |
||||
it under the terms of the GNU General Public License as published by |
||||
the Free Software Foundation, either version 2 of the License, or |
||||
(at your option) any later version. |
||||
|
||||
This program is distributed in the hope that it will be useful, |
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of |
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
||||
GNU General Public License for more details. |
||||
|
||||
You should have received a copy of the GNU General Public License |
||||
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
*/ |
||||
|
||||
// Please do not modify this file
|
||||
|
||||
#pragma once |
||||
|
||||
void i2c_init(void); |
||||
void i2c_set_bitrate(uint16_t bitrate_khz); |
||||
uint8_t i2c_send(uint8_t address, uint8_t *data, uint16_t length); |
||||
|
@ -1,106 +0,0 @@ |
||||
/*
|
||||
Copyright 2016 Luiz Ribeiro <luizribeiro@gmail.com> |
||||
|
||||
This program is free software: you can redistribute it and/or modify |
||||
it under the terms of the GNU General Public License as published by |
||||
the Free Software Foundation, either version 2 of the License, or |
||||
(at your option) any later version. |
||||
|
||||
This program is distributed in the hope that it will be useful, |
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of |
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
||||
GNU General Public License for more details. |
||||
|
||||
You should have received a copy of the GNU General Public License |
||||
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
*/ |
||||
|
||||
// Please do not modify this file
|
||||
|
||||
#include <avr/io.h> |
||||
#include <util/twi.h> |
||||
|
||||
#include "i2c.h" |
||||
|
||||
void i2c_set_bitrate(uint16_t bitrate_khz) { |
||||
uint8_t bitrate_div = ((F_CPU / 1000l) / bitrate_khz); |
||||
if (bitrate_div >= 16) { |
||||
bitrate_div = (bitrate_div - 16) / 2; |
||||
} |
||||
TWBR = bitrate_div; |
||||
} |
||||
|
||||
void i2c_init(void) { |
||||
// set pull-up resistors on I2C bus pins
|
||||
PORTC |= 0b11; |
||||
|
||||
i2c_set_bitrate(400); |
||||
|
||||
// enable TWI (two-wire interface)
|
||||
TWCR |= (1 << TWEN); |
||||
|
||||
// enable TWI interrupt and slave address ACK
|
||||
TWCR |= (1 << TWIE); |
||||
TWCR |= (1 << TWEA); |
||||
} |
||||
|
||||
uint8_t i2c_start(uint8_t address) { |
||||
// reset TWI control register
|
||||
TWCR = 0; |
||||
|
||||
// begin transmission and wait for it to end
|
||||
TWCR = (1<<TWINT) | (1<<TWSTA) | (1<<TWEN); |
||||
while (!(TWCR & (1<<TWINT))); |
||||
|
||||
// check if the start condition was successfully transmitted
|
||||
if ((TWSR & 0xF8) != TW_START) { |
||||
return 1; |
||||
} |
||||
|
||||
// transmit address and wait
|
||||
TWDR = address; |
||||
TWCR = (1<<TWINT) | (1<<TWEN); |
||||
while (!(TWCR & (1<<TWINT))); |
||||
|
||||
// check if the device has acknowledged the READ / WRITE mode
|
||||
uint8_t twst = TW_STATUS & 0xF8; |
||||
if ((twst != TW_MT_SLA_ACK) && (twst != TW_MR_SLA_ACK)) { |
||||
return 1; |
||||
} |
||||
|
||||
return 0; |
||||
} |
||||
|
||||
void i2c_stop(void) { |
||||
TWCR = (1<<TWINT) | (1<<TWEN) | (1<<TWSTO); |
||||
} |
||||
|
||||
uint8_t i2c_write(uint8_t data) { |
||||
TWDR = data; |
||||
|
||||
// transmit data and wait
|
||||
TWCR = (1<<TWINT) | (1<<TWEN); |
||||
while (!(TWCR & (1<<TWINT))); |
||||
|
||||
if ((TWSR & 0xF8) != TW_MT_DATA_ACK) { |
||||
return 1; |
||||
} |
||||
|
||||
return 0; |
||||
} |
||||
|
||||
uint8_t i2c_send(uint8_t address, uint8_t *data, uint16_t length) { |
||||
if (i2c_start(address)) { |
||||
return 1; |
||||
} |
||||
|
||||
for (uint16_t i = 0; i < length; i++) { |
||||
if (i2c_write(data[i])) { |
||||
return 1; |
||||
} |
||||
} |
||||
|
||||
i2c_stop(); |
||||
|
||||
return 0; |
||||
} |
@ -1,27 +0,0 @@ |
||||
/*
|
||||
Copyright 2016 Luiz Ribeiro <luizribeiro@gmail.com> |
||||
|
||||
This program is free software: you can redistribute it and/or modify |
||||
it under the terms of the GNU General Public License as published by |
||||
the Free Software Foundation, either version 2 of the License, or |
||||
(at your option) any later version. |
||||
|
||||
This program is distributed in the hope that it will be useful, |
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of |
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
||||
GNU General Public License for more details. |
||||
|
||||
You should have received a copy of the GNU General Public License |
||||
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
*/ |
||||
|
||||
// Please do not modify this file
|
||||
|
||||
#ifndef __I2C_H__ |
||||
#define __I2C_H__ |
||||
|
||||
void i2c_init(void); |
||||
void i2c_set_bitrate(uint16_t bitrate_khz); |
||||
uint8_t i2c_send(uint8_t address, uint8_t *data, uint16_t length); |
||||
|
||||
#endif |
@ -1,106 +0,0 @@ |
||||
/*
|
||||
Copyright 2016 Luiz Ribeiro <luizribeiro@gmail.com> |
||||
|
||||
This program is free software: you can redistribute it and/or modify |
||||
it under the terms of the GNU General Public License as published by |
||||
the Free Software Foundation, either version 2 of the License, or |
||||
(at your option) any later version. |
||||
|
||||
This program is distributed in the hope that it will be useful, |
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of |
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
||||
GNU General Public License for more details. |
||||
|
||||
You should have received a copy of the GNU General Public License |
||||
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
*/ |
||||
|
||||
// Please do not modify this file
|
||||
|
||||
#include <avr/io.h> |
||||
#include <util/twi.h> |
||||
|
||||
#include "i2c.h" |
||||
|
||||
void i2c_set_bitrate(uint16_t bitrate_khz) { |
||||
uint8_t bitrate_div = ((F_CPU / 1000l) / bitrate_khz); |
||||
if (bitrate_div >= 16) { |
||||
bitrate_div = (bitrate_div - 16) / 2; |
||||
} |
||||
TWBR = bitrate_div; |
||||
} |
||||
|
||||
void i2c_init(void) { |
||||
// set pull-up resistors on I2C bus pins
|
||||
PORTC |= 0b11; |
||||
|
||||
i2c_set_bitrate(400); |
||||
|
||||
// enable TWI (two-wire interface)
|
||||
TWCR |= (1 << TWEN); |
||||
|
||||
// enable TWI interrupt and slave address ACK
|
||||
TWCR |= (1 << TWIE); |
||||
TWCR |= (1 << TWEA); |
||||
} |
||||
|
||||
uint8_t i2c_start(uint8_t address) { |
||||
// reset TWI control register
|
||||
TWCR = 0; |
||||
|
||||
// begin transmission and wait for it to end
|
||||
TWCR = (1<<TWINT) | (1<<TWSTA) | (1<<TWEN); |
||||
while (!(TWCR & (1<<TWINT))); |
||||
|
||||
// check if the start condition was successfully transmitted
|
||||
if ((TWSR & 0xF8) != TW_START) { |
||||
return 1; |
||||
} |
||||
|
||||
// transmit address and wait
|
||||
TWDR = address; |
||||
TWCR = (1<<TWINT) | (1<<TWEN); |
||||
while (!(TWCR & (1<<TWINT))); |
||||
|
||||
// check if the device has acknowledged the READ / WRITE mode
|
||||
uint8_t twst = TW_STATUS & 0xF8; |
||||
if ((twst != TW_MT_SLA_ACK) && (twst != TW_MR_SLA_ACK)) { |
||||
return 1; |
||||
} |
||||
|
||||
return 0; |
||||
} |
||||
|
||||
void i2c_stop(void) { |
||||
TWCR = (1<<TWINT) | (1<<TWEN) | (1<<TWSTO); |
||||
} |
||||
|
||||
uint8_t i2c_write(uint8_t data) { |
||||
TWDR = data; |
||||
|
||||
// transmit data and wait
|
||||
TWCR = (1<<TWINT) | (1<<TWEN); |
||||
while (!(TWCR & (1<<TWINT))); |
||||
|
||||
if ((TWSR & 0xF8) != TW_MT_DATA_ACK) { |
||||
return 1; |
||||
} |
||||
|
||||
return 0; |
||||
} |
||||
|
||||
uint8_t i2c_send(uint8_t address, uint8_t *data, uint16_t length) { |
||||
if (i2c_start(address)) { |
||||
return 1; |
||||
} |
||||
|
||||
for (uint16_t i = 0; i < length; i++) { |
||||
if (i2c_write(data[i])) { |
||||
return 1; |
||||
} |
||||
} |
||||
|
||||
i2c_stop(); |
||||
|
||||
return 0; |
||||
} |
@ -1,25 +0,0 @@ |
||||
/*
|
||||
Copyright 2016 Luiz Ribeiro <luizribeiro@gmail.com> |
||||
|
||||
This program is free software: you can redistribute it and/or modify |
||||
it under the terms of the GNU General Public License as published by |
||||
the Free Software Foundation, either version 2 of the License, or |
||||
(at your option) any later version. |
||||
|
||||
This program is distributed in the hope that it will be useful, |
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of |
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
||||
GNU General Public License for more details. |
||||
|
||||
You should have received a copy of the GNU General Public License |
||||
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
*/ |
||||
|
||||
// Please do not modify this file
|
||||
|
||||
#pragma once |
||||
|
||||
void i2c_init(void); |
||||
void i2c_set_bitrate(uint16_t bitrate_khz); |
||||
uint8_t i2c_send(uint8_t address, uint8_t *data, uint16_t length); |
||||
|
@ -1,104 +0,0 @@ |
||||
/*
|
||||
Copyright 2016 Luiz Ribeiro <luizribeiro@gmail.com> |
||||
|
||||
This program is free software: you can redistribute it and/or modify |
||||
it under the terms of the GNU General Public License as published by |
||||
the Free Software Foundation, either version 2 of the License, or |
||||
(at your option) any later version. |
||||
|
||||
This program is distributed in the hope that it will be useful, |
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of |
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
||||
GNU General Public License for more details. |
||||
|
||||
You should have received a copy of the GNU General Public License |
||||
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
*/ |
||||
|
||||
#include <avr/io.h> |
||||
#include <util/twi.h> |
||||
|
||||
#include "i2c.h" |
||||
|
||||
void i2c_set_bitrate(uint16_t bitrate_khz) { |
||||
uint8_t bitrate_div = ((F_CPU / 1000l) / bitrate_khz); |
||||
if (bitrate_div >= 16) { |
||||
bitrate_div = (bitrate_div - 16) / 2; |
||||
} |
||||
TWBR = bitrate_div; |
||||
} |
||||
|
||||
void i2c_init(void) { |
||||
// set pull-up resistors on I2C bus pins
|
||||
PORTC |= 0b11; |
||||
|
||||
i2c_set_bitrate(400); |
||||
|
||||
// enable TWI (two-wire interface)
|
||||
TWCR |= (1 << TWEN); |
||||
|
||||
// enable TWI interrupt and slave address ACK
|
||||
TWCR |= (1 << TWIE); |
||||
TWCR |= (1 << TWEA); |
||||
} |
||||
|
||||
uint8_t i2c_start(uint8_t address) { |
||||
// reset TWI control register
|
||||
TWCR = 0; |
||||
|
||||
// begin transmission and wait for it to end
|
||||
TWCR = (1<<TWINT) | (1<<TWSTA) | (1<<TWEN); |
||||
while (!(TWCR & (1<<TWINT))); |
||||
|
||||
// check if the start condition was successfully transmitted
|
||||
if ((TWSR & 0xF8) != TW_START) { |
||||
return 1; |
||||
} |
||||
|
||||
// transmit address and wait
|
||||
TWDR = address; |
||||
TWCR = (1<<TWINT) | (1<<TWEN); |
||||
while (!(TWCR & (1<<TWINT))); |
||||
|
||||
// check if the device has acknowledged the READ / WRITE mode
|
||||
uint8_t twst = TW_STATUS & 0xF8; |
||||
if ((twst != TW_MT_SLA_ACK) && (twst != TW_MR_SLA_ACK)) { |
||||
return 1; |
||||
} |
||||
|
||||
return 0; |
||||
} |
||||
|
||||
void i2c_stop(void) { |
||||
TWCR = (1<<TWINT) | (1<<TWEN) | (1<<TWSTO); |
||||
} |
||||
|
||||
uint8_t i2c_write(uint8_t data) { |
||||
TWDR = data; |
||||
|
||||
// transmit data and wait
|
||||
TWCR = (1<<TWINT) | (1<<TWEN); |
||||
while (!(TWCR & (1<<TWINT))); |
||||
|
||||
if ((TWSR & 0xF8) != TW_MT_DATA_ACK) { |
||||
return 1; |
||||
} |
||||
|
||||
return 0; |
||||
} |
||||
|
||||
uint8_t i2c_send(uint8_t address, uint8_t *data, uint16_t length) { |
||||
if (i2c_start(address)) { |
||||
return 1; |
||||
} |
||||
|
||||
for (uint16_t i = 0; i < length; i++) { |
||||
if (i2c_write(data[i])) { |
||||
return 1; |
||||
} |
||||
} |
||||
|
||||
i2c_stop(); |
||||
|
||||
return 0; |
||||
} |
@ -1,25 +0,0 @@ |
||||
/*
|
||||
Copyright 2016 Luiz Ribeiro <luizribeiro@gmail.com> |
||||
|
||||
This program is free software: you can redistribute it and/or modify |
||||
it under the terms of the GNU General Public License as published by |
||||
the Free Software Foundation, either version 2 of the License, or |
||||
(at your option) any later version. |
||||
|
||||
This program is distributed in the hope that it will be useful, |
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of |
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
||||
GNU General Public License for more details. |
||||
|
||||
You should have received a copy of the GNU General Public License |
||||
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
*/ |
||||
|
||||
#ifndef __I2C_H__ |
||||
#define __I2C_H__ |
||||
|
||||
void i2c_init(void); |
||||
void i2c_set_bitrate(uint16_t bitrate_khz); |
||||
uint8_t i2c_send(uint8_t address, uint8_t *data, uint16_t length); |
||||
|
||||
#endif |
@ -1,104 +0,0 @@ |
||||
/*
|
||||
Copyright 2016 Luiz Ribeiro <luizribeiro@gmail.com> |
||||
|
||||
This program is free software: you can redistribute it and/or modify |
||||
it under the terms of the GNU General Public License as published by |
||||
the Free Software Foundation, either version 2 of the License, or |
||||
(at your option) any later version. |
||||
|
||||
This program is distributed in the hope that it will be useful, |
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of |
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
||||
GNU General Public License for more details. |
||||
|
||||
You should have received a copy of the GNU General Public License |
||||
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
*/ |
||||
|
||||
#include <avr/io.h> |
||||
#include <util/twi.h> |
||||
|
||||
#include "i2c.h" |
||||
|
||||
void i2c_set_bitrate(uint16_t bitrate_khz) { |
||||
uint8_t bitrate_div = ((F_CPU / 1000l) / bitrate_khz); |
||||
if (bitrate_div >= 16) { |
||||
bitrate_div = (bitrate_div - 16) / 2; |
||||
} |
||||
TWBR = bitrate_div; |
||||
} |
||||
|
||||
void i2c_init(void) { |
||||
// set pull-up resistors on I2C bus pins
|
||||
PORTC |= 0b11; |
||||
|
||||
i2c_set_bitrate(400); |
||||
|
||||
// enable TWI (two-wire interface)
|
||||
TWCR |= (1 << TWEN); |
||||
|
||||
// enable TWI interrupt and slave address ACK
|
||||
TWCR |= (1 << TWIE); |
||||
TWCR |= (1 << TWEA); |
||||
} |
||||
|
||||
uint8_t i2c_start(uint8_t address) { |
||||
// reset TWI control register
|
||||
TWCR = 0; |
||||
|
||||
// begin transmission and wait for it to end
|
||||
TWCR = (1<<TWINT) | (1<<TWSTA) | (1<<TWEN); |
||||
while (!(TWCR & (1<<TWINT))); |
||||
|
||||
// check if the start condition was successfully transmitted
|
||||
if ((TWSR & 0xF8) != TW_START) { |
||||
return 1; |
||||
} |
||||
|
||||
// transmit address and wait
|
||||
TWDR = address; |
||||
TWCR = (1<<TWINT) | (1<<TWEN); |
||||
while (!(TWCR & (1<<TWINT))); |
||||
|
||||
// check if the device has acknowledged the READ / WRITE mode
|
||||
uint8_t twst = TW_STATUS & 0xF8; |
||||
if ((twst != TW_MT_SLA_ACK) && (twst != TW_MR_SLA_ACK)) { |
||||
return 1; |
||||
} |
||||
|
||||
return 0; |
||||
} |
||||
|
||||
void i2c_stop(void) { |
||||
TWCR = (1<<TWINT) | (1<<TWEN) | (1<<TWSTO); |
||||
} |
||||
|
||||
uint8_t i2c_write(uint8_t data) { |
||||
TWDR = data; |
||||
|
||||
// transmit data and wait
|
||||
TWCR = (1<<TWINT) | (1<<TWEN); |
||||
while (!(TWCR & (1<<TWINT))); |
||||
|
||||
if ((TWSR & 0xF8) != TW_MT_DATA_ACK) { |
||||
return 1; |
||||
} |
||||
|
||||
return 0; |
||||
} |
||||
|
||||
uint8_t i2c_send(uint8_t address, uint8_t *data, uint16_t length) { |
||||
if (i2c_start(address)) { |
||||
return 1; |
||||
} |
||||
|
||||
for (uint16_t i = 0; i < length; i++) { |
||||
if (i2c_write(data[i])) { |
||||
return 1; |
||||
} |
||||
} |
||||
|
||||
i2c_stop(); |
||||
|
||||
return 0; |
||||
} |
@ -1,25 +0,0 @@ |
||||
/*
|
||||
Copyright 2016 Luiz Ribeiro <luizribeiro@gmail.com> |
||||
|
||||
This program is free software: you can redistribute it and/or modify |
||||
it under the terms of the GNU General Public License as published by |
||||
the Free Software Foundation, either version 2 of the License, or |
||||
(at your option) any later version. |
||||
|
||||
This program is distributed in the hope that it will be useful, |
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of |
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
||||
GNU General Public License for more details. |
||||
|
||||
You should have received a copy of the GNU General Public License |
||||
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
*/ |
||||
|
||||
#ifndef __I2C_H__ |
||||
#define __I2C_H__ |
||||
|
||||
void i2c_init(void); |
||||
void i2c_set_bitrate(uint16_t bitrate_khz); |
||||
uint8_t i2c_send(uint8_t address, uint8_t *data, uint16_t length); |
||||
|
||||
#endif |
@ -1,104 +0,0 @@ |
||||
/*
|
||||
Copyright 2016 Luiz Ribeiro <luizribeiro@gmail.com> |
||||
|
||||
This program is free software: you can redistribute it and/or modify |
||||
it under the terms of the GNU General Public License as published by |
||||
the Free Software Foundation, either version 2 of the License, or |
||||
(at your option) any later version. |
||||
|
||||
This program is distributed in the hope that it will be useful, |
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of |
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
||||
GNU General Public License for more details. |
||||
|
||||
You should have received a copy of the GNU General Public License |
||||
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
*/ |
||||
|
||||
#include <avr/io.h> |
||||
#include <util/twi.h> |
||||
|
||||
#include "i2c.h" |
||||
|
||||
void i2c_set_bitrate(uint16_t bitrate_khz) { |
||||
uint8_t bitrate_div = ((F_CPU / 1000l) / bitrate_khz); |
||||
if (bitrate_div >= 16) { |
||||
bitrate_div = (bitrate_div - 16) / 2; |
||||
} |
||||
TWBR = bitrate_div; |
||||
} |
||||
|
||||
void i2c_init(void) { |
||||
// set pull-up resistors on I2C bus pins
|
||||
PORTC |= 0b11; |
||||
|
||||
i2c_set_bitrate(400); |
||||
|
||||
// enable TWI (two-wire interface)
|
||||
TWCR |= (1 << TWEN); |
||||
|
||||
// enable TWI interrupt and slave address ACK
|
||||
TWCR |= (1 << TWIE); |
||||
TWCR |= (1 << TWEA); |
||||
} |
||||
|
||||
uint8_t i2c_start(uint8_t address) { |
||||
// reset TWI control register
|
||||
TWCR = 0; |
||||
|
||||
// begin transmission and wait for it to end
|
||||
TWCR = (1<<TWINT) | (1<<TWSTA) | (1<<TWEN); |
||||
while (!(TWCR & (1<<TWINT))); |
||||
|
||||
// check if the start condition was successfully transmitted
|
||||
if ((TWSR & 0xF8) != TW_START) { |
||||
return 1; |
||||
} |
||||
|
||||
// transmit address and wait
|
||||
TWDR = address; |
||||
TWCR = (1<<TWINT) | (1<<TWEN); |
||||
while (!(TWCR & (1<<TWINT))); |
||||
|
||||
// check if the device has acknowledged the READ / WRITE mode
|
||||
uint8_t twst = TW_STATUS & 0xF8; |
||||
if ((twst != TW_MT_SLA_ACK) && (twst != TW_MR_SLA_ACK)) { |
||||
return 1; |
||||
} |
||||
|
||||
return 0; |
||||
} |
||||
|
||||
void i2c_stop(void) { |
||||
TWCR = (1<<TWINT) | (1<<TWEN) | (1<<TWSTO); |
||||
} |
||||
|
||||
uint8_t i2c_write(uint8_t data) { |
||||
TWDR = data; |
||||
|
||||
// transmit data and wait
|
||||
TWCR = (1<<TWINT) | (1<<TWEN); |
||||
while (!(TWCR & (1<<TWINT))); |
||||
|
||||
if ((TWSR & 0xF8) != TW_MT_DATA_ACK) { |
||||
return 1; |
||||
} |
||||
|
||||
return 0; |
||||
} |
||||
|
||||
uint8_t i2c_send(uint8_t address, uint8_t *data, uint16_t length) { |
||||
if (i2c_start(address)) { |
||||
return 1; |
||||
} |
||||
|
||||
for (uint16_t i = 0; i < length; i++) { |
||||
if (i2c_write(data[i])) { |
||||
return 1; |
||||
} |
||||
} |
||||
|
||||
i2c_stop(); |
||||
|
||||
return 0; |
||||
} |
@ -1,25 +0,0 @@ |
||||
/*
|
||||
Copyright 2016 Luiz Ribeiro <luizribeiro@gmail.com> |
||||
|
||||
This program is free software: you can redistribute it and/or modify |
||||
it under the terms of the GNU General Public License as published by |
||||
the Free Software Foundation, either version 2 of the License, or |
||||
(at your option) any later version. |
||||
|
||||
This program is distributed in the hope that it will be useful, |
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of |
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
||||
GNU General Public License for more details. |
||||
|
||||
You should have received a copy of the GNU General Public License |
||||
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
*/ |
||||
|
||||
#ifndef __I2C_H__ |
||||
#define __I2C_H__ |
||||
|
||||
void i2c_init(void); |
||||
void i2c_set_bitrate(uint16_t bitrate_khz); |
||||
uint8_t i2c_send(uint8_t address, uint8_t *data, uint16_t length); |
||||
|
||||
#endif |
Loading…
Reference in new issue