Fix common files for mbed

4 files changed, 318 insertions, 0 deletions

diff --git a/common/avr/bootloader.c b/common/avr/bootloader.c
new file mode 100644
index 000000000..cda295b18
--- /dev/null
+++ b/common/avr/bootloader.c
@@ -0,0 +1,148 @@
+#include <stdint.h>
+#include <stdbool.h>
+#include <avr/io.h>
+#include <avr/interrupt.h>
+#include <avr/wdt.h>
+#include <util/delay.h>
+#include "bootloader.h"
+
+#ifdef PROTOCOL_LUFA
+#include <LUFA/Drivers/USB/USB.h>
+#endif
+
+
+/* Boot Section Size in *BYTEs*
+ *   Teensy   halfKay    512
+ *   Teensy++ halfKay    1024
+ *   Atmel DFU loader    4096
+ *   LUFA bootloader     4096
+ *   USBaspLoader        2048
+ */
+#ifndef BOOTLOADER_SIZE
+#warning To use bootloader_jump() you need to define BOOTLOADER_SIZE in config.h.
+#define BOOTLOADER_SIZE     4096
+#endif
+
+#define FLASH_SIZE          (FLASHEND + 1L)
+#define BOOTLOADER_START    (FLASH_SIZE - BOOTLOADER_SIZE)
+
+
+/* 
+ * Entering the Bootloader via Software 
+ * http://www.fourwalledcubicle.com/files/LUFA/Doc/120730/html/_page__software_bootloader_start.html
+ */
+#define BOOTLOADER_RESET_KEY 0xB007B007
+uint32_t reset_key  __attribute__ ((section (".noinit")));
+
+/* initialize MCU status by watchdog reset */
+void bootloader_jump(void) {
+#ifdef PROTOCOL_LUFA
+    USB_Disable();
+    cli();
+    _delay_ms(2000);
+#endif
+
+#ifdef PROTOCOL_PJRC
+    cli();
+    UDCON = 1;
+    USBCON = (1<<FRZCLK);
+    UCSR1B = 0;
+    _delay_ms(5);
+#endif
+
+    // watchdog reset
+    reset_key = BOOTLOADER_RESET_KEY;
+    wdt_enable(WDTO_250MS);
+    for (;;);
+}
+
+
+/* this runs before main() */
+void bootloader_jump_after_watchdog_reset(void) __attribute__ ((used, naked, section (".init3")));
+void bootloader_jump_after_watchdog_reset(void)
+{
+    if ((MCUSR & (1<<WDRF)) && reset_key == BOOTLOADER_RESET_KEY) {
+        reset_key = 0;
+
+        // My custom USBasploader requires this to come up.
+        MCUSR = 0;
+
+        // Seems like Teensy halfkay loader requires clearing WDRF and disabling watchdog.
+        MCUSR &= ~(1<<WDRF);
+        wdt_disable();
+
+        // This is compled into 'icall', address should be in word unit, not byte.
+        ((void (*)(void))(BOOTLOADER_START/2))();
+    }
+}
+
+
+#if 0
+/* Jumping To The Bootloader
+ * http://www.pjrc.com/teensy/jump_to_bootloader.html
+ * 
+ * This method doen't work when using LUFA. idk why.
+ * - needs to initialize more regisers or interrupt setting?
+ */
+void bootloader_jump(void) {
+#ifdef PROTOCOL_LUFA
+    USB_Disable();
+    cli();
+    _delay_ms(2000);
+#endif
+
+#ifdef PROTOCOL_PJRC
+    cli();
+    UDCON = 1;
+    USBCON = (1<<FRZCLK);
+    UCSR1B = 0;
+    _delay_ms(5);
+#endif
+
+    /*
+     * Initialize
+     */
+#if defined(__AVR_AT90USB162__)
+    EIMSK = 0; PCICR = 0; SPCR = 0; ACSR = 0; EECR = 0;
+    TIMSK0 = 0; TIMSK1 = 0; UCSR1B = 0;
+    DDRB = 0; DDRC = 0; DDRD = 0;
+    PORTB = 0; PORTC = 0; PORTD = 0;
+#elif defined(__AVR_ATmega32U4__)
+    EIMSK = 0; PCICR = 0; SPCR = 0; ACSR = 0; EECR = 0; ADCSRA = 0;
+    TIMSK0 = 0; TIMSK1 = 0; TIMSK3 = 0; TIMSK4 = 0; UCSR1B = 0; TWCR = 0;
+    DDRB = 0; DDRC = 0; DDRD = 0; DDRE = 0; DDRF = 0; TWCR = 0;
+    PORTB = 0; PORTC = 0; PORTD = 0; PORTE = 0; PORTF = 0;
+#elif defined(__AVR_AT90USB646__)
+    EIMSK = 0; PCICR = 0; SPCR = 0; ACSR = 0; EECR = 0; ADCSRA = 0;
+    TIMSK0 = 0; TIMSK1 = 0; TIMSK2 = 0; TIMSK3 = 0; UCSR1B = 0; TWCR = 0;
+    DDRA = 0; DDRB = 0; DDRC = 0; DDRD = 0; DDRE = 0; DDRF = 0;
+    PORTA = 0; PORTB = 0; PORTC = 0; PORTD = 0; PORTE = 0; PORTF = 0;
+#elif defined(__AVR_AT90USB1286__)
+    EIMSK = 0; PCICR = 0; SPCR = 0; ACSR = 0; EECR = 0; ADCSRA = 0;
+    TIMSK0 = 0; TIMSK1 = 0; TIMSK2 = 0; TIMSK3 = 0; UCSR1B = 0; TWCR = 0;
+    DDRA = 0; DDRB = 0; DDRC = 0; DDRD = 0; DDRE = 0; DDRF = 0;
+    PORTA = 0; PORTB = 0; PORTC = 0; PORTD = 0; PORTE = 0; PORTF = 0;
+#endif
+
+    /*
+     * USBaspLoader
+     */
+#if defined(__AVR_ATmega168__) || defined(__AVR_ATmega168P__) || defined(__AVR_ATmega328P__)
+    // This makes custom USBasploader come up.
+    MCUSR = 0;
+
+    // initialize ports
+    PORTB = 0; PORTC= 0; PORTD = 0;
+    DDRB = 0; DDRC= 0; DDRD = 0;
+
+    // disable interrupts
+    EIMSK = 0; EECR = 0; SPCR = 0;
+    ACSR = 0; SPMCSR = 0; WDTCSR = 0; PCICR = 0;
+    TIMSK0 = 0; TIMSK1 = 0; TIMSK2 = 0;
+    ADCSRA = 0; TWCR = 0; UCSR0B = 0;
+#endif
+
+    // This is compled into 'icall', address should be in word unit, not byte.
+    ((void (*)(void))(BOOTLOADER_START/2))();
+}
+#endif
diff --git a/common/avr/eeconfig.c b/common/avr/eeconfig.c
new file mode 100644
index 000000000..5bd47dc6a
--- /dev/null
+++ b/common/avr/eeconfig.c
@@ -0,0 +1,45 @@
+#include <stdint.h>
+#include <stdbool.h>
+#include <avr/eeprom.h>
+#include "eeconfig.h"
+
+void eeconfig_init(void)
+{
+    eeprom_write_word(EECONFIG_MAGIC,          EECONFIG_MAGIC_NUMBER);
+    eeprom_write_byte(EECONFIG_DEBUG,          0);
+    eeprom_write_byte(EECONFIG_DEFAULT_LAYER,  0);
+    eeprom_write_byte(EECONFIG_KEYMAP,         0);
+    eeprom_write_byte(EECONFIG_MOUSEKEY_ACCEL, 0);
+#ifdef BACKLIGHT_ENABLE
+    eeprom_write_byte(EECONFIG_BACKLIGHT,      0);
+#endif
+}
+
+void eeconfig_enable(void)
+{
+    eeprom_write_word(EECONFIG_MAGIC, EECONFIG_MAGIC_NUMBER);
+}
+
+void eeconfig_disable(void)
+{
+    eeprom_write_word(EECONFIG_MAGIC, 0xFFFF);
+}
+
+bool eeconfig_is_enabled(void)
+{
+    return (eeprom_read_word(EECONFIG_MAGIC) == EECONFIG_MAGIC_NUMBER);
+}
+
+uint8_t eeconfig_read_debug(void)      { return eeprom_read_byte(EECONFIG_DEBUG); }
+void eeconfig_write_debug(uint8_t val) { eeprom_write_byte(EECONFIG_DEBUG, val); }
+
+uint8_t eeconfig_read_default_layer(void)      { return eeprom_read_byte(EECONFIG_DEFAULT_LAYER); }
+void eeconfig_write_default_layer(uint8_t val) { eeprom_write_byte(EECONFIG_DEFAULT_LAYER, val); }
+
+uint8_t eeconfig_read_keymap(void)      { return eeprom_read_byte(EECONFIG_KEYMAP); }
+void eeconfig_write_keymap(uint8_t val) { eeprom_write_byte(EECONFIG_KEYMAP, val); }
+
+#ifdef BACKLIGHT_ENABLE
+uint8_t eeconfig_read_backlight(void)      { return eeprom_read_byte(EECONFIG_BACKLIGHT); }
+void eeconfig_write_backlight(uint8_t val) { eeprom_write_byte(EECONFIG_BACKLIGHT, val); }
+#endif
diff --git a/common/avr/suspend.c b/common/avr/suspend.c
new file mode 100644
index 000000000..f44a036be
--- /dev/null
+++ b/common/avr/suspend.c
@@ -0,0 +1,98 @@
+#include <stdbool.h>
+#include <avr/sleep.h>
+#include <avr/wdt.h>
+#include <avr/interrupt.h>
+#include "matrix.h"
+#include "action.h"
+#include "backlight.h"
+#include "suspend_avr.h"
+#include "suspend.h"
+
+
+#define wdt_intr_enable(value)   \
+__asm__ __volatile__ (  \
+    "in __tmp_reg__,__SREG__" "\n\t"    \
+    "cli" "\n\t"    \
+    "wdr" "\n\t"    \
+    "sts %0,%1" "\n\t"  \
+    "out __SREG__,__tmp_reg__" "\n\t"   \
+    "sts %0,%2" "\n\t" \
+    : /* no outputs */  \
+    : "M" (_SFR_MEM_ADDR(_WD_CONTROL_REG)), \
+    "r" (_BV(_WD_CHANGE_BIT) | _BV(WDE)), \
+    "r" ((uint8_t) ((value & 0x08 ? _WD_PS3_MASK : 0x00) | \
+        _BV(WDIE) | (value & 0x07)) ) \
+    : "r0"  \
+)
+
+
+void suspend_power_down(void)
+{
+#ifdef BACKLIGHT_ENABLE
+    backlight_set(0);
+#endif
+#ifndef NO_SUSPEND_POWER_DOWN
+    // Enable watchdog to wake from MCU sleep
+    cli();
+    wdt_reset();
+
+    // Watchdog Interrupt and System Reset Mode
+    //wdt_enable(WDTO_1S);
+    //WDTCSR |= _BV(WDIE);
+    
+    // Watchdog Interrupt Mode
+    wdt_intr_enable(WDTO_120MS);
+    
+    // TODO: more power saving
+    // See PicoPower application note
+    // - I/O port input with pullup
+    // - prescale clock
+    // - BOD disable
+    // - Power Reduction Register PRR
+    // sleep in power down mode
+    set_sleep_mode(SLEEP_MODE_PWR_DOWN);
+    sleep_enable();
+    sei();
+    sleep_cpu();
+    sleep_disable();
+
+    // Disable watchdog after sleep
+    wdt_disable();
+#endif
+}
+
+bool suspend_wakeup_condition(void)
+{
+    matrix_scan();
+    for (uint8_t r = 0; r < MATRIX_ROWS; r++) {
+        if (matrix_get_row(r)) return true;
+    }
+    return false;
+}
+
+// run immediately after wakeup
+void suspend_wakeup_init(void)
+{
+    // clear keyboard state
+    clear_keyboard();
+#ifdef BACKLIGHT_ENABLE
+    backlight_init();
+#endif
+}
+
+#ifndef NO_SUSPEND_POWER_DOWN
+/* watchdog timeout */
+ISR(WDT_vect)
+{
+    /* wakeup from MCU sleep mode */
+/*
+    // blink LED
+    static uint8_t led_state = 0;
+    static uint8_t led_count = 0;
+    led_count++;
+    if ((led_count & 0x07) == 0) {
+        led_set((led_state ^= (1<<USB_LED_CAPS_LOCK)));
+    }
+*/
+}
+#endif
diff --git a/common/avr/suspend_avr.h b/common/avr/suspend_avr.h
new file mode 100644
index 000000000..357102da4
--- /dev/null
+++ b/common/avr/suspend_avr.h
@@ -0,0 +1,27 @@
+#ifndef SUSPEND_AVR_H
+#define SUSPEND_AVR_H
+
+#include <stdint.h>
+#include <stdbool.h>
+#include <avr/sleep.h>
+#include <avr/wdt.h>
+#include <avr/interrupt.h>
+
+
+#define wdt_intr_enable(value)   \
+__asm__ __volatile__ (  \
+    "in __tmp_reg__,__SREG__" "\n\t"    \
+    "cli" "\n\t"    \
+    "wdr" "\n\t"    \
+    "sts %0,%1" "\n\t"  \
+    "out __SREG__,__tmp_reg__" "\n\t"   \
+    "sts %0,%2" "\n\t" \
+    : /* no outputs */  \
+    : "M" (_SFR_MEM_ADDR(_WD_CONTROL_REG)), \
+    "r" (_BV(_WD_CHANGE_BIT) | _BV(WDE)), \
+    "r" ((uint8_t) ((value & 0x08 ? _WD_PS3_MASK : 0x00) | \
+        _BV(WDIE) | (value & 0x07)) ) \
+    : "r0"  \
+)
+
+#endif