Remove legacy AVR ssd1306 driver (#17864)
This commit is contained in:
Joel Challis
@ -1,159 +0,0 @@
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#include <util/twi.h>
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#include <avr/io.h>
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#include <stdlib.h>
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#include <avr/interrupt.h>
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#include <util/twi.h>
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#include <stdbool.h>
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#include "i2c.h"
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// Limits the amount of we wait for any one i2c transaction.
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// Since were running SCL line 100kHz (=> 10μs/bit), and each transactions is
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// 9 bits, a single transaction will take around 90μs to complete.
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//
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// (F_CPU/SCL_CLOCK) => # of μC cycles to transfer a bit
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// poll loop takes at least 8 clock cycles to execute
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#define I2C_LOOP_TIMEOUT (9+1)*(F_CPU/SCL_CLOCK)/8
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#define BUFFER_POS_INC() (slave_buffer_pos = (slave_buffer_pos+1)%SLAVE_BUFFER_SIZE)
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volatile uint8_t i2c_slave_buffer[SLAVE_BUFFER_SIZE];
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static volatile uint8_t slave_buffer_pos;
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static volatile bool slave_has_register_set = false;
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// Wait for an i2c operation to finish
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inline static
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void i2c_delay(void) {
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uint16_t lim = 0;
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while(!(TWCR & (1<<TWINT)) && lim < I2C_LOOP_TIMEOUT)
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lim++;
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// easier way, but will wait slightly longer
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// _delay_us(100);
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}
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// Setup twi to run at 100kHz
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void i2c_master_init(void) {
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// no prescaler
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TWSR = 0;
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// Set TWI clock frequency to SCL_CLOCK. Need TWBR>10.
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// Check datasheets for more info.
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TWBR = ((F_CPU/SCL_CLOCK)-16)/2;
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}
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// Start a transaction with the given i2c slave address. The direction of the
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// transfer is set with I2C_READ and I2C_WRITE.
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// returns: 0 => success
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// 1 => error
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uint8_t i2c_master_start(uint8_t address) {
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TWCR = (1<<TWINT) | (1<<TWEN) | (1<<TWSTA);
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i2c_delay();
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// check that we started successfully
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if ( (TW_STATUS != TW_START) && (TW_STATUS != TW_REP_START))
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return 1;
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TWDR = address;
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TWCR = (1<<TWINT) | (1<<TWEN);
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i2c_delay();
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if ( (TW_STATUS != TW_MT_SLA_ACK) && (TW_STATUS != TW_MR_SLA_ACK) )
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return 1; // slave did not acknowledge
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else
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return 0; // success
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}
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// Finish the i2c transaction.
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void i2c_master_stop(void) {
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TWCR = (1<<TWINT) | (1<<TWEN) | (1<<TWSTO);
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uint16_t lim = 0;
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while(!(TWCR & (1<<TWSTO)) && lim < I2C_LOOP_TIMEOUT)
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lim++;
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}
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// Write one byte to the i2c slave.
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// returns 0 => slave ACK
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// 1 => slave NACK
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uint8_t i2c_master_write(uint8_t data) {
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TWDR = data;
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TWCR = (1<<TWINT) | (1<<TWEN);
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i2c_delay();
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// check if the slave acknowledged us
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return (TW_STATUS == TW_MT_DATA_ACK) ? 0 : 1;
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}
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// Read one byte from the i2c slave. If ack=1 the slave is acknowledged,
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// if ack=0 the acknowledge bit is not set.
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// returns: byte read from i2c device
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uint8_t i2c_master_read(int ack) {
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TWCR = (1<<TWINT) | (1<<TWEN) | (ack<<TWEA);
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i2c_delay();
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return TWDR;
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}
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void i2c_reset_state(void) {
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TWCR = 0;
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}
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void i2c_slave_init(uint8_t address) {
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TWAR = address << 0; // slave i2c address
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// TWEN - twi enable
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// TWEA - enable address acknowledgement
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// TWINT - twi interrupt flag
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// TWIE - enable the twi interrupt
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TWCR = (1<<TWIE) | (1<<TWEA) | (1<<TWINT) | (1<<TWEN);
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}
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ISR(TWI_vect);
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ISR(TWI_vect) {
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uint8_t ack = 1;
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switch(TW_STATUS) {
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case TW_SR_SLA_ACK:
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// this device has been addressed as a slave receiver
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slave_has_register_set = false;
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break;
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case TW_SR_DATA_ACK:
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// this device has received data as a slave receiver
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// The first byte that we receive in this transaction sets the location
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// of the read/write location of the slaves memory that it exposes over
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// i2c. After that, bytes will be written at slave_buffer_pos, incrementing
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// slave_buffer_pos after each write.
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if(!slave_has_register_set) {
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slave_buffer_pos = TWDR;
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// don't acknowledge the master if this memory loctaion is out of bounds
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if ( slave_buffer_pos >= SLAVE_BUFFER_SIZE ) {
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ack = 0;
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slave_buffer_pos = 0;
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}
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slave_has_register_set = true;
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} else {
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i2c_slave_buffer[slave_buffer_pos] = TWDR;
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BUFFER_POS_INC();
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}
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break;
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case TW_ST_SLA_ACK:
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case TW_ST_DATA_ACK:
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// master has addressed this device as a slave transmitter and is
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// requesting data.
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TWDR = i2c_slave_buffer[slave_buffer_pos];
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BUFFER_POS_INC();
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break;
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case TW_BUS_ERROR: // something went wrong, reset twi state
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TWCR = 0;
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default:
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break;
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}
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// Reset everything, so we are ready for the next TWI interrupt
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TWCR |= (1<<TWIE) | (1<<TWINT) | (ack<<TWEA) | (1<<TWEN);
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}
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@ -1,28 +0,0 @@
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#pragma once
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#include <stdint.h>
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#ifndef F_CPU
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#define F_CPU 16000000UL
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#endif
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#define I2C_READ 1
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#define I2C_WRITE 0
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#define I2C_ACK 1
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#define I2C_NACK 0
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#define SLAVE_BUFFER_SIZE 0x10
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// i2c SCL clock frequency
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#define SCL_CLOCK 400000L
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extern volatile uint8_t i2c_slave_buffer[SLAVE_BUFFER_SIZE];
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void i2c_master_init(void);
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uint8_t i2c_master_start(uint8_t address);
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void i2c_master_stop(void);
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uint8_t i2c_master_write(uint8_t data);
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uint8_t i2c_master_read(int);
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void i2c_reset_state(void);
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void i2c_slave_init(uint8_t address);
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@ -1,58 +0,0 @@
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/*
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This is the c configuration file for the keymap
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Copyright 2012 Jun Wako <wakojun@gmail.com>
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Copyright 2015 Jack Humbert
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef CONFIG_USER_H
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#define CONFIG_USER_H
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#include "../../config.h"
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/* Use I2C or Serial, not both */
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#define USE_I2C
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//#define USE_SERIAL
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/* Select hand configuration */
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#define MASTER_LEFT
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// #define MASTER_RIGHT
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// #define EE_HANDS
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#define FLIP_HALF
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#define SSD1306OLED
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//#define OLED_ROTATE180
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#define TAPPING_FORCE_HOLD
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#define TAPPING_TERM 100
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#ifdef SUBPROJECT_rev1
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#include "../../rev1/config.h"
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#endif
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#ifdef SUBPROJECT_rev2
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#include "../../rev2/config.h"
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#endif
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#undef RGBLED_NUM
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#define RGBLIGHT_ANIMATIONS
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#define RGBLED_NUM 6
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#define RGBLIGHT_HUE_STEP 10
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#define RGBLIGHT_SAT_STEP 17
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#define RGBLIGHT_VAL_STEP 17
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#endif
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File diff suppressed because it is too large
Load Diff
@ -1,25 +0,0 @@
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SSD1306 OLED Display via I2C
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======
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Features
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--------
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Some features supported by the firmware:
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* I2C connection between the two halves is required as the OLED display will use this connection as well. Note this
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requires pull-up resistors on the data and clock lines.
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* OLED display will connect from either side
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Wiring
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------
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Work in progress...
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OLED Configuration
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-------------------------------
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Work in progress...
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@ -1,22 +0,0 @@
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SRC += ssd1306.c
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# Build Options
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# change to "no" to disable the options, or define them in the Makefile in
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# the appropriate keymap folder that will get included automatically
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#
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BOOTMAGIC_ENABLE = no # Enable Bootmagic Lite
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MOUSEKEY_ENABLE = no # Mouse keys
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EXTRAKEY_ENABLE = yes # Audio control and System control
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CONSOLE_ENABLE = no # Console for debug
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COMMAND_ENABLE = no # Commands for debug and configuration
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NKRO_ENABLE = yes # Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
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BACKLIGHT_ENABLE = no # Enable keyboard backlight functionality
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MIDI_ENABLE = no # MIDI controls
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AUDIO_ENABLE = no # Audio output on port C6
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UNICODE_ENABLE = no # Unicode
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BLUETOOTH_ENABLE = no # Enable Bluetooth with the Adafruit EZ-Key HID
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RGBLIGHT_ENABLE = yes # Enable WS2812 RGB underlight.
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SWAP_HANDS_ENABLE = no # Enable one-hand typing
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# Do not enable SLEEP_LED_ENABLE. it uses the same timer as BACKLIGHT_ENABLE
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SLEEP_LED_ENABLE = no # Breathing sleep LED during USB suspend
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File diff suppressed because it is too large
Load Diff
@ -1,87 +0,0 @@
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#pragma once
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#include <stdbool.h>
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#include <stdio.h>
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#include "config.h"
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enum ssd1306_cmds {
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DisplayOff = 0xAE,
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DisplayOn = 0xAF,
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SetContrast = 0x81,
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DisplayAllOnResume = 0xA4,
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DisplayAllOn = 0xA5,
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NormalDisplay = 0xA6,
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InvertDisplay = 0xA7,
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SetDisplayOffset = 0xD3,
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SetComPins = 0xda,
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SetVComDetect = 0xdb,
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SetDisplayClockDiv = 0xD5,
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SetPreCharge = 0xd9,
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SetMultiPlex = 0xa8,
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SetLowColumn = 0x00,
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SetHighColumn = 0x10,
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SetStartLine = 0x40,
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SetMemoryMode = 0x20,
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ColumnAddr = 0x21,
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PageAddr = 0x22,
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ComScanInc = 0xc0,
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ComScanDec = 0xc8,
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SegRemap = 0xa0,
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SetChargePump = 0x8d,
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ExternalVcc = 0x01,
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SwitchCapVcc = 0x02,
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ActivateScroll = 0x2f,
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DeActivateScroll = 0x2e,
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SetVerticalScrollArea = 0xa3,
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RightHorizontalScroll = 0x26,
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LeftHorizontalScroll = 0x27,
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VerticalAndRightHorizontalScroll = 0x29,
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VerticalAndLeftHorizontalScroll = 0x2a,
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};
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// Controls the SSD1306 128x32 OLED display via i2c
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#ifndef SSD1306_ADDRESS
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# define SSD1306_ADDRESS 0x3C
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#endif
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#define DisplayHeight 32
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#define DisplayWidth 128
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#define FontHeight 8
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#define FontWidth 6
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#define MatrixRows (DisplayHeight / FontHeight)
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#define MatrixCols (DisplayWidth / FontWidth)
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struct CharacterMatrix {
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uint8_t display[MatrixRows][MatrixCols];
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uint8_t *cursor;
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bool dirty;
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};
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extern struct CharacterMatrix display;
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bool iota_gfx_init(void);
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void iota_gfx_task(void);
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bool iota_gfx_off(void);
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bool iota_gfx_on(void);
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void iota_gfx_flush(void);
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void iota_gfx_write_char(uint8_t c);
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void iota_gfx_write(const char *data);
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void iota_gfx_write_P(const char *data);
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void iota_gfx_clear_screen(void);
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void iota_gfx_task_user(void);
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void matrix_clear(struct CharacterMatrix *matrix);
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void matrix_write_char_inner(struct CharacterMatrix *matrix, uint8_t c);
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void matrix_write_char(struct CharacterMatrix *matrix, uint8_t c);
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void matrix_write(struct CharacterMatrix *matrix, const char *data);
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void matrix_write_P(struct CharacterMatrix *matrix, const char *data);
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void matrix_render(struct CharacterMatrix *matrix);
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