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M0lly: refactor OLED support and qmk-dfu bootloader (#8475)

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This commit is contained in:
TerryMathews
2020-03-18 21:13:12 -04:00
committed by GitHub
parent 73f903906e
commit 19d7cbc858
6 changed files with 30 additions and 321 deletions
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5
keyboards/m0lly/config.h
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@@ -67,6 +67,11 @@ along with this program. If not, see <http://www.gnu.org/licenses/>.
/* Locking resynchronize hack */
#define LOCKING_RESYNC_ENABLE
#define QMK_ESC_OUTPUT A0 // usually COL
#define QMK_ESC_INPUT F4 // usually ROW
#define QMK_LED D2 // NumLock on M0lly
//#define QMK_SPEAKER C6
/*
* Force NKRO
*

166
keyboards/m0lly/i2c.c
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@@ -1,166 +0,0 @@
#include <util/twi.h>
#include <avr/io.h>
#include <stdlib.h>
#include <avr/interrupt.h>
#include <util/twi.h>
#include <stdbool.h>
#include "i2c.h"
#ifdef USE_I2C
// Limits the amount of we wait for any one i2c transaction.
// Since were running SCL line 100kHz (=> 10μs/bit), and each transactions is
// 9 bits, a single transaction will take around 90μs to complete.
//
// (F_CPU/SCL_CLOCK) => # of μC cycles to transfer a bit
// poll loop takes at least 8 clock cycles to execute
#define I2C_LOOP_TIMEOUT (9+1)*(F_CPU/SCL_CLOCK)/8
#define BUFFER_POS_INC() (slave_buffer_pos = (slave_buffer_pos+1)%SLAVE_BUFFER_SIZE)
volatile uint8_t i2c_slave_buffer[SLAVE_BUFFER_SIZE];
static volatile uint8_t slave_buffer_pos;
static volatile bool slave_has_register_set = false;
// Wait for an i2c operation to finish
inline static
void i2c_delay(void) {
uint16_t lim = 0;
while(!(TWCR & (1<<TWINT)) && lim < I2C_LOOP_TIMEOUT)
lim++;
// easier way, but will wait slightly longer
// _delay_us(100);
}
// Setup twi to run at 100kHz
void i2c_master_init(void) {
// no prescaler
TWSR = 0;
// Set TWI clock frequency to SCL_CLOCK. Need TWBR>10.
// Check datasheets for more info.
TWBR = ((F_CPU/SCL_CLOCK)-16)/2;
}
// Start a transaction with the given i2c slave address. The direction of the
// transfer is set with I2C_READ and I2C_WRITE.
// returns: 0 => success
// 1 => error
uint8_t i2c_master_start(uint8_t address) {
TWCR = (1<<TWINT) | (1<<TWSTA) | (1<<TWEN);
i2c_delay();
// check that we started successfully
if ( (TW_STATUS != TW_START) && (TW_STATUS != TW_REP_START))
return 1;
// send device address
TWDR = address;
TWCR = (1<<TWINT) | (1<<TWEN);
i2c_delay();
if ( (TW_STATUS != TW_MT_SLA_ACK) && (TW_STATUS != TW_MR_SLA_ACK) )
return 1; // slave did not acknowledge
else
return 0; // success
}
// Finish the i2c transaction.
void i2c_master_stop(void) {
TWCR = (1<<TWINT) | (1<<TWEN) | (1<<TWSTO);
uint16_t lim = 0;
while(!(TWCR & (1<<TWSTO)) && lim < I2C_LOOP_TIMEOUT)
lim++;
}
// Write one byte to the i2c slave.
// returns 0 => slave ACK
// 1 => slave NACK
uint8_t i2c_master_write(uint8_t data) {
TWDR = data;
TWCR = (1<<TWINT) | (1<<TWEN);
i2c_delay();
// check if the slave acknowledged us
return (TW_STATUS == TW_MT_DATA_ACK) ? 0 : 1;
}
// Read one byte from the i2c slave. If ack=1 the slave is acknowledged,
// if ack=0 the acknowledge bit is not set.
// returns: byte read from i2c device
uint8_t i2c_master_read(int ack) {
TWCR = (1<<TWINT) | (1<<TWEN) | (ack<<TWEA);
i2c_delay();
return TWDR;
}
void i2c_reset_state(void) {
TWCR = 0;
}
void i2c_slave_init(uint8_t address) {
TWAR = address << 0; // slave i2c address
// TWEN - twi enable
// TWEA - enable address acknowledgement
// TWINT - twi interrupt flag
// TWIE - enable the twi interrupt
TWCR = (1<<TWIE) | (1<<TWEA) | (1<<TWINT) | (1<<TWEN);
}
ISR(TWI_vect);
ISR(TWI_vect) {
uint8_t ack = 1;
switch(TW_STATUS) {
case TW_SR_SLA_ACK:
// this device has been addressed as a slave receiver
slave_has_register_set = false;
break;
case TW_SR_DATA_ACK:
// this device has received data as a slave receiver
// The first byte that we receive in this transaction sets the location
// of the read/write location of the slaves memory that it exposes over
// i2c. After that, bytes will be written at slave_buffer_pos, incrementing
// slave_buffer_pos after each write.
if(!slave_has_register_set) {
slave_buffer_pos = TWDR;
// don't acknowledge the master if this memory loctaion is out of bounds
if ( slave_buffer_pos >= SLAVE_BUFFER_SIZE ) {
ack = 0;
slave_buffer_pos = 0;
}
slave_has_register_set = true;
} else {
i2c_slave_buffer[slave_buffer_pos] = TWDR;
BUFFER_POS_INC();
}
break;
case TW_ST_SLA_ACK:
case TW_ST_DATA_ACK:
// master has addressed this device as a slave transmitter and is
// requesting data.
TWDR = i2c_slave_buffer[slave_buffer_pos];
BUFFER_POS_INC();
break;
case TW_BUS_ERROR: // something went wrong, reset twi state
TWCR = 0;
default:
break;
}
// Reset everything, so we are ready for the next TWI interrupt
TWCR |= (1<<TWIE) | (1<<TWINT) | (ack<<TWEA) | (1<<TWEN);
}
#endif

49
keyboards/m0lly/i2c.h
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@@ -1,49 +0,0 @@
#ifndef I2C_H
#define I2C_H
#include <stdint.h>
#ifndef F_CPU
#define F_CPU 16000000UL
#endif
#define I2C_READ 1
#define I2C_WRITE 0
#define I2C_ACK 1
#define I2C_NACK 0
#define SLAVE_BUFFER_SIZE 0x10
// i2c SCL clock frequency
#define SCL_CLOCK 800000L
extern volatile uint8_t i2c_slave_buffer[SLAVE_BUFFER_SIZE];
void i2c_master_init(void);
uint8_t i2c_master_start(uint8_t address);
void i2c_master_stop(void);
uint8_t i2c_master_write(uint8_t data);
uint8_t i2c_master_read(int);
void i2c_reset_state(void);
void i2c_slave_init(uint8_t address);
static inline unsigned char i2c_start_read(unsigned char addr) {
return i2c_master_start((addr << 1) | I2C_READ);
}
static inline unsigned char i2c_start_write(unsigned char addr) {
return i2c_master_start((addr << 1) | I2C_WRITE);
}
// from SSD1306 scrips
extern unsigned char i2c_rep_start(unsigned char addr);
extern void i2c_start_wait(unsigned char addr);
extern unsigned char i2c_readAck(void);
extern unsigned char i2c_readNak(void);
extern unsigned char i2c_read(unsigned char ack);
#define i2c_read(ack) (ack) ? i2c_readAck() : i2c_readNak();
#endif

24
keyboards/m0lly/keymaps/default/config.h
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@@ -1,24 +0,0 @@
/* Copyright 2017 Mathias Andersson <wraul@dbox.se>
*
* 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/>.
*/
#pragma once
#define USE_I2C
#define SSD1306OLED
//#define OLED_ROTATE180
#define SSD1306_ADDRESS 0x3C
// place overrides here

99
keyboards/m0lly/keymaps/default/keymap.c
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@@ -13,11 +13,8 @@
* 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 QMK_KEYBOARD_H
#include "LUFA/Drivers/Peripheral/TWI.h"
#include "i2c.h"
#include "ssd1306.h"
//Layers
@@ -26,13 +23,6 @@ enum {
FUNCTION,
};
bool screenWorks = 0;
//13 characters max without re-writing the "Layer: " format in iota_gfx_task_user()
static char layer_lookup[][14] = {"Base","Function"};
const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
/* Keymap BASE: (Base Layer) Default Layer
*
@@ -78,72 +68,27 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
),
};
bool process_record_user(uint16_t keycode, keyrecord_t *record) {
return true;
}
#ifdef OLED_DRIVER_ENABLE
void oled_task_user(void) {
oled_write_P(PSTR("TKC1800\n"),false);
// Host Keyboard Layer Status
oled_write_P(PSTR("Layer: "), false);
void led_set_user(uint8_t usb_led) {
}
void matrix_init_user(void) {
#ifdef USE_I2C
i2c_master_init();
#ifdef SSD1306OLED
// calls code for the SSD1306 OLED
_delay_ms(400);
TWI_Init(TWI_BIT_PRESCALE_1, TWI_BITLENGTH_FROM_FREQ(1, 800000));
if ( iota_gfx_init() ) { // turns on the display
screenWorks = 1;
}
#endif
#endif
#ifdef AUDIO_ENABLE
startup_user();
#endif
}
void matrix_scan_user(void) {
#ifdef SSD1306OLED
if ( screenWorks ) {
iota_gfx_task(); // this is what updates the display continuously
};
#endif
}
void matrix_update(struct CharacterMatrix *dest,
const struct CharacterMatrix *source) {
if (memcmp(dest->display, source->display, sizeof(dest->display))) {
memcpy(dest->display, source->display, sizeof(dest->display));
dest->dirty = true;
}
}
void iota_gfx_task_user(void) {
#if DEBUG_TO_SCREEN
if (debug_enable) {
return;
switch (get_highest_layer(layer_state)) {
case BASE:
oled_write_P(PSTR("Base\n"), false);
break;
case FUNCTION:
oled_write_P(PSTR("Function\n"), false);
break;
default:
// Or use the write_ln shortcut over adding '\n' to the end of your string
oled_write_ln_P(PSTR("Undefined"), false);
}
#endif
struct CharacterMatrix matrix;
matrix_clear(&matrix);
matrix_write_P(&matrix, PSTR("TKC M0LLY"));
uint8_t layer = biton32(layer_state);
char buf[40];
snprintf(buf,sizeof(buf), "Undef-%d", layer);
matrix_write_P(&matrix, PSTR("\nLayer: "));
matrix_write(&matrix, layer_lookup[layer]);
// Host Keyboard LED Status
char led[40];
snprintf(led, sizeof(led), "\n\n%s %s %s",
(host_keyboard_leds() & (1<<USB_LED_NUM_LOCK)) ? "NUMLOCK" : " ",
(host_keyboard_leds() & (1<<USB_LED_CAPS_LOCK)) ? "CAPS" : " ",
(host_keyboard_leds() & (1<<USB_LED_SCROLL_LOCK)) ? "SCLK" : " ");
matrix_write(&matrix, led);
matrix_update(&display, &matrix);
// Host Keyboard LED Status
led_t led_state = host_keyboard_led_state();
oled_write_P(led_state.num_lock ? PSTR("NUM ") : PSTR(" "), false);
oled_write_P(led_state.caps_lock ? PSTR("CAP ") : PSTR(" "), false);
oled_write_P(led_state.scroll_lock ? PSTR("SCR ") : PSTR(" "), false);
}
#endif

8
keyboards/m0lly/rules.mk
View File

@@ -9,12 +9,12 @@ MCU = at90usb1286
# QMK DFU qmk-dfu
# ATmega32A bootloadHID
# ATmega328P USBasp
BOOTLOADER = atmel-dfu
BOOTLOADER = qmk-dfu
# Build Options
# change yes to no to disable
#
BOOTMAGIC_ENABLE = yes # Virtual DIP switch configuration
BOOTMAGIC_ENABLE = lite # Virtual DIP switch configuration
MOUSEKEY_ENABLE = yes # Mouse keys
EXTRAKEY_ENABLE = yes # Audio control and System control
CONSOLE_ENABLE = yes # Console for debug
@@ -29,6 +29,4 @@ MIDI_ENABLE = no # MIDI controls
UNICODE_ENABLE = no # Unicode
BLUETOOTH_ENABLE = no # Enable Bluetooth with the Adafruit EZ-Key HID
AUDIO_ENABLE = no # Audio output on port C6
SRC = i2c.c \
ssd1306.c
OLED_DRIVER_ENABLE = yes