From 59ea5e02f76a37e5021c5f9d02af149e48e7c07c Mon Sep 17 00:00:00 2001
From: tmk <nobody@nowhere>
Date: Sat, 19 Jul 2014 02:33:23 +0900
Subject: Mkdir rn42

---
 keyboard/hhkb_rn42/rn42/main.c      | 102 +++++++++++++++
 keyboard/hhkb_rn42/rn42/rn42.c      | 192 +++++++++++++++++++++++++++
 keyboard/hhkb_rn42/rn42/rn42.h      |  18 +++
 keyboard/hhkb_rn42/rn42/rn42_task.c | 255 ++++++++++++++++++++++++++++++++++++
 keyboard/hhkb_rn42/rn42/rn42_task.h |  10 ++
 keyboard/hhkb_rn42/rn42/suart.S     | 156 ++++++++++++++++++++++
 keyboard/hhkb_rn42/rn42/suart.h     |   8 ++
 7 files changed, 741 insertions(+)
 create mode 100644 keyboard/hhkb_rn42/rn42/main.c
 create mode 100644 keyboard/hhkb_rn42/rn42/rn42.c
 create mode 100644 keyboard/hhkb_rn42/rn42/rn42.h
 create mode 100644 keyboard/hhkb_rn42/rn42/rn42_task.c
 create mode 100644 keyboard/hhkb_rn42/rn42/rn42_task.h
 create mode 100644 keyboard/hhkb_rn42/rn42/suart.S
 create mode 100644 keyboard/hhkb_rn42/rn42/suart.h

(limited to 'keyboard/hhkb_rn42/rn42')

diff --git a/keyboard/hhkb_rn42/rn42/main.c b/keyboard/hhkb_rn42/rn42/main.c
new file mode 100644
index 0000000000..a3a37c0747
--- /dev/null
+++ b/keyboard/hhkb_rn42/rn42/main.c
@@ -0,0 +1,102 @@
+#include <avr/io.h>
+#include <avr/power.h>
+#include <avr/wdt.h>
+#include "lufa.h"
+#include "print.h"
+#include "sendchar.h"
+#include "rn42.h"
+#include "rn42_task.h"
+#include "serial.h"
+#include "keyboard.h"
+#include "keycode.h"
+#include "action.h"
+#include "action_util.h"
+#include "wait.h"
+#include "suart.h"
+#include "suspend.h"
+
+static int8_t sendchar_func(uint8_t c)
+{
+    sendchar(c);    // LUFA
+    xmit(c);        // SUART
+    return 0;
+}
+
+static void SetupHardware(void)
+{
+    /* Disable watchdog if enabled by bootloader/fuses */
+    MCUSR &= ~(1 << WDRF);
+    wdt_disable();
+
+    /* Disable clock division */
+    clock_prescale_set(clock_div_1);
+
+    // Leonardo needs. Without this USB device is not recognized.
+    USB_Disable();
+
+    USB_Init();
+
+    // for Console_Task
+    USB_Device_EnableSOFEvents();
+    print_set_sendchar(sendchar_func);
+
+    // SUART PD0:output, PD1:input
+    DDRD |= (1<<0);
+    PORTD |= (1<<0);
+    DDRD &= ~(1<<1);
+    PORTD |= (1<<1);
+}
+
+int main(void)  __attribute__ ((weak));
+int main(void)
+{
+    SetupHardware();
+    sei();
+
+    /* wait for USB startup to get ready for debug output */
+    uint8_t timeout = 255;  // timeout when USB is not available(Bluetooth)
+    while (timeout-- && USB_DeviceState != DEVICE_STATE_Configured) {
+        wait_ms(4);
+#if defined(INTERRUPT_CONTROL_ENDPOINT)
+        ;
+#else
+        USB_USBTask();
+#endif
+    }
+    print("USB configured.\n");
+
+    rn42_init();
+    rn42_task_init();
+    print("RN-42 init\n");
+
+    /* init modules */
+    keyboard_init();
+
+    if (!rn42_rts()) {
+        host_set_driver(&rn42_driver);
+    } else {
+        host_set_driver(&lufa_driver);
+    }
+
+#ifdef SLEEP_LED_ENABLE
+    sleep_led_init();
+#endif
+
+    print("Keyboard start.\n");
+    while (1) {
+        while (USB_DeviceState == DEVICE_STATE_Suspended) {
+            suspend_power_down();
+            if (USB_Device_RemoteWakeupEnabled && suspend_wakeup_condition()) {
+                    USB_Device_SendRemoteWakeup();
+            }
+        }
+
+        keyboard_task();
+
+#if !defined(INTERRUPT_CONTROL_ENDPOINT)
+        USB_USBTask();
+#endif
+
+        rn42_task();
+    }
+}
diff --git a/keyboard/hhkb_rn42/rn42/rn42.c b/keyboard/hhkb_rn42/rn42/rn42.c
new file mode 100644
index 0000000000..3fcd64ad6a
--- /dev/null
+++ b/keyboard/hhkb_rn42/rn42/rn42.c
@@ -0,0 +1,192 @@
+#include <avr/io.h>
+#include "host.h"
+#include "host_driver.h"
+#include "serial.h"
+#include "rn42.h"
+#include "print.h"
+#include "wait.h"
+
+
+/* Host driver */
+static uint8_t keyboard_leds(void);
+static void send_keyboard(report_keyboard_t *report);
+static void send_mouse(report_mouse_t *report);
+static void send_system(uint16_t data);
+static void send_consumer(uint16_t data);
+
+host_driver_t rn42_driver = {
+    keyboard_leds,
+    send_keyboard,
+    send_mouse,
+    send_system,
+    send_consumer
+};
+
+
+void rn42_init(void)
+{
+    // PF7: BT connection control(HiZ: connect, low: disconnect)
+    // JTAG disable for PORT F. write JTD bit twice within four cycles.
+    MCUCR |= (1<<JTD);
+    MCUCR |= (1<<JTD);
+    rn42_autoconnect();
+
+    // PF1: RTS(low: allowed to send, high: not allowed)
+    DDRF &= ~(1<<1);
+    PORTF &= ~(1<<1);
+
+    // PD5: CTS(low: allow to send, high:not allow)
+    DDRD |= (1<<5);
+    PORTD &= ~(1<<5);
+
+    serial_init();
+}
+
+void rn42_putc(uint8_t c)
+{
+    serial_send(c);
+}
+
+bool rn42_autoconnecting(void)
+{
+    // GPIO6 for control connection(high: auto connect, low: disconnect)
+    // Note that this needs config: SM,4(Auto-Connect DTR Mode)
+    return (PORTF & (1<<7) ? true : false);
+}
+
+void rn42_autoconnect(void)
+{
+    // hi to auto connect
+    DDRF |= (1<<7);
+    PORTF |= (1<<7);
+}
+
+void rn42_disconnect(void)
+{
+    // low to disconnect
+    DDRF |= (1<<7);
+    PORTF &= ~(1<<7);
+}
+
+bool rn42_rts(void)
+{
+    // low when RN-42 is powered and ready to receive
+    return PINF&(1<<1);
+}
+
+void rn42_cts_hi(void)
+{
+    // not allow to send
+    PORTD |= (1<<5);
+}
+
+void rn42_cts_lo(void)
+{
+    // allow to send
+    PORTD &= ~(1<<5);
+}
+
+
+static uint8_t keyboard_leds(void) { return 0; }
+
+static void send_keyboard(report_keyboard_t *report)
+{
+    // wake from deep sleep
+/*
+    PORTD |= (1<<5);    // high
+    wait_ms(5);
+    PORTD &= ~(1<<5);   // low
+*/
+
+    serial_send(0xFD);  // Raw report mode
+    serial_send(9);     // length
+    serial_send(1);     // descriptor type
+    serial_send(report->mods);
+    serial_send(0x00);
+    serial_send(report->keys[0]);
+    serial_send(report->keys[1]);
+    serial_send(report->keys[2]);
+    serial_send(report->keys[3]);
+    serial_send(report->keys[4]);
+    serial_send(report->keys[5]);
+}
+
+static void send_mouse(report_mouse_t *report)
+{
+    // wake from deep sleep
+/*
+    PORTD |= (1<<5);    // high
+    wait_ms(5);
+    PORTD &= ~(1<<5);   // low
+*/
+
+    serial_send(0xFD);  // Raw report mode
+    serial_send(5);     // length
+    serial_send(2);     // descriptor type
+    serial_send(report->buttons);
+    serial_send(report->x);
+    serial_send(report->y);
+    serial_send(report->v);
+}
+
+static void send_system(uint16_t data)
+{
+    // Table 5-6 of RN-BT-DATA-UB
+    // 81,82,83 scan codes can be used?
+}
+
+
+static uint16_t usage2bits(uint16_t usage)
+{
+    switch (usage) {
+        case AC_HOME:               return 0x01;
+        case AL_EMAIL:              return 0x02;
+        case AC_SEARCH:             return 0x04;
+        //case AL_KBD_LAYOUT:         return 0x08;  // Apple virtual keybaord toggle
+        case AUDIO_VOL_UP:          return 0x10;
+        case AUDIO_VOL_DOWN:        return 0x20;
+        case AUDIO_MUTE:            return 0x40;
+        case TRANSPORT_PLAY_PAUSE:  return 0x80;
+        case TRANSPORT_NEXT_TRACK:  return 0x100;
+        case TRANSPORT_PREV_TRACK:  return 0x200;
+        case TRANSPORT_STOP:        return 0x400;
+        case TRANSPORT_STOP_EJECT:  return 0x800;
+        //case return 0x1000;   // Fast forward
+        //case return 0x2000;   // Rewind
+        //case return 0x4000;   // Stop/eject
+        //case return 0x8000;   // Internet browser
+    };
+    return 0;
+}
+
+static void send_consumer(uint16_t data)
+{
+    uint16_t bits = usage2bits(data);
+    serial_send(0xFD);  // Raw report mode
+    serial_send(3);     // length
+    serial_send(3);     // descriptor type
+    serial_send(bits&0xFF);
+    serial_send((bits>>8)&0xFF);
+}
+
+
+/* Null driver for config_mode */
+static uint8_t config_keyboard_leds(void);
+static void config_send_keyboard(report_keyboard_t *report);
+static void config_send_mouse(report_mouse_t *report);
+static void config_send_system(uint16_t data);
+static void config_send_consumer(uint16_t data);
+
+host_driver_t rn42_config_driver = {
+    config_keyboard_leds,
+    config_send_keyboard,
+    config_send_mouse,
+    config_send_system,
+    config_send_consumer
+};
+
+static uint8_t config_keyboard_leds(void) { return 0; }
+static void config_send_keyboard(report_keyboard_t *report) {}
+static void config_send_mouse(report_mouse_t *report) {}
+static void config_send_system(uint16_t data) {}
+static void config_send_consumer(uint16_t data) {}
diff --git a/keyboard/hhkb_rn42/rn42/rn42.h b/keyboard/hhkb_rn42/rn42/rn42.h
new file mode 100644
index 0000000000..4189733b49
--- /dev/null
+++ b/keyboard/hhkb_rn42/rn42/rn42.h
@@ -0,0 +1,18 @@
+#ifndef RN42_H
+#define RN42_H
+
+#include <stdbool.h>
+
+host_driver_t rn42_driver;
+host_driver_t rn42_config_driver;
+
+void rn42_init(void);
+void rn42_putc(uint8_t c);
+bool rn42_autoconnecting(void);
+void rn42_autoconnect(void);
+void rn42_disconnect(void);
+bool rn42_rts(void);
+void rn42_cts_hi(void);
+void rn42_cts_lo(void);
+
+#endif
diff --git a/keyboard/hhkb_rn42/rn42/rn42_task.c b/keyboard/hhkb_rn42/rn42/rn42_task.c
new file mode 100644
index 0000000000..7ec4c1b540
--- /dev/null
+++ b/keyboard/hhkb_rn42/rn42/rn42_task.c
@@ -0,0 +1,255 @@
+#include <stdint.h>
+#include "keycode.h"
+#include "serial.h"
+#include "host.h"
+#include "action.h"
+#include "action_util.h"
+#include "lufa.h"
+#include "rn42_task.h"
+#include "print.h"
+#include "timer.h"
+#include "command.h"
+
+static bool config_mode = false;
+static bool force_usb = false;
+
+static void battery_adc_init(void)
+{
+    ADMUX = (1<<REFS1) | (1<<REFS0);                // Ref:2.56V band-gap, Input:ADC0(PF0)
+    ADCSRA = (1<<ADPS2) | (1<<ADPS1) | (1<<ADPS0);  // Prescale:128 16MHz/128=125KHz
+    ADCSRA |= (1<<ADEN);                            // enable ADC
+}
+
+static uint16_t battery_adc(void)
+{
+    volatile uint16_t bat;
+    ADCSRA |= (1<<ADEN);
+
+    // discard first result
+    ADCSRA |= (1<<ADSC);
+    while (ADCSRA & (1<<ADSC)) ;
+    bat = ADC;
+
+    // discard second result
+    ADCSRA |= (1<<ADSC);
+    while (ADCSRA & (1<<ADSC)) ;
+    bat = ADC;
+
+    ADCSRA |= (1<<ADSC);
+    while (ADCSRA & (1<<ADSC)) ;
+    bat = ADC;
+
+    ADCSRA &= ~(1<<ADEN);
+    return bat;
+}
+
+
+void rn42_task_init(void)
+{
+    battery_adc_init();
+}
+
+void rn42_task(void)
+{
+    int16_t c;
+    if (config_mode) {
+        // Config mode: print output from RN-42
+        while ((c = serial_recv2()) != -1) {
+            // without flow control it'll fail to receive data when flooded
+            rn42_cts_hi();
+            xprintf("%c", c);
+            rn42_cts_lo();
+        }
+    } else {
+        // Raw mode: interpret output report of LED state
+        while ((c = serial_recv2()) != -1) {
+            // LED Out report: 0xFE, 0x02, 0x01, <leds>
+            // To get the report over UART set bit3 with SH, command.
+            static enum {LED_INIT, LED_FE, LED_02, LED_01} state = LED_INIT;
+            xprintf("%02X\n", c);
+            switch (state) {
+                case LED_INIT:
+                    if (c == 0xFE) state = LED_FE;
+                    else           state = LED_INIT;
+                    break;
+                case LED_FE:
+                    if (c == 0x02) state = LED_02;
+                    else           state = LED_INIT;
+                    break;
+                case LED_02:
+                    if (c == 0x01) state = LED_01;
+                    else           state = LED_INIT;
+                    break;
+                case LED_01:
+                    // TODO: move to rn42.c and make accessible with keyboard_leds()
+                    xprintf("LED status: %02X\n", c);
+                    state = LED_INIT;
+                    break;
+                default:
+                    state = LED_INIT;
+            }
+        }
+    }
+
+    /* Bluetooth mode when ready */
+    if (!config_mode && !force_usb) {
+        if (!rn42_rts() && host_get_driver() != &rn42_driver) {
+            clear_keyboard();
+            host_set_driver(&rn42_driver);
+        } else if (rn42_rts() && host_get_driver() != &lufa_driver) {
+            clear_keyboard();
+            host_set_driver(&lufa_driver);
+        }
+    }
+}
+
+
+
+/******************************************************************************
+ * Command
+ ******************************************************************************/
+bool command_extra(uint8_t code)
+{
+    static host_driver_t *prev_driver = &rn42_driver;
+    switch (code) {
+        case KC_H:
+        case KC_SLASH: /* ? */
+            print("\n\n----- Bluetooth RN-42 Help -----\n");
+            print("Del: enter/exit config mode(auto_connect/disconnect)\n");
+            print("i:   RN-42 info\n");
+            print("b:   battery voltage\n");
+
+            if (config_mode) {
+                return true;
+            } else {
+                print("u:   Force USB mode\n");
+                return false;   // to display default command help
+            }
+        case KC_DELETE:
+            if (rn42_autoconnecting()) {
+                prev_driver = host_get_driver();
+                clear_keyboard();
+                _delay_ms(500);
+                host_set_driver(&rn42_config_driver);   // null driver; not to send a key to host
+                rn42_disconnect();
+                print("\nRN-42: disconnect\n");
+                print("Enter config mode\n");
+                print("type $$$ to start and + for local echo\n");
+                command_state = CONSOLE;
+                config_mode = true;
+            } else {
+                rn42_autoconnect();
+                print("\nRN-42: auto_connect\n");
+                print("Exit config mode\n");
+                command_state = ONESHOT;
+                config_mode = false;
+                //clear_keyboard();
+                host_set_driver(prev_driver);
+            }
+            return true;
+        case KC_U:
+            if (config_mode) return false;
+            if (force_usb) {
+                print("Auto mode\n");
+                force_usb = false;
+            } else {
+                print("USB mode\n");
+                force_usb = true;
+                clear_keyboard();
+                host_set_driver(&lufa_driver);
+            }
+            return true;
+        case KC_I:
+            print("\n----- RN-42 info -----\n");
+            xprintf("protocol: %s\n", (host_get_driver() == &rn42_driver) ? "RN-42" : "LUFA");
+            xprintf("force_usb: %X\n", force_usb);
+            xprintf("rn42_autoconnecting(): %X\n", rn42_autoconnecting());
+            xprintf("rn42_rts(): %X\n", rn42_rts());
+            xprintf("config_mode: %X\n", config_mode);
+            return true;
+        case KC_B:
+            // battery monitor
+            xprintf("BAT: %04X(%08lX)\n",  battery_adc(), timer_read32());
+            return true;
+        default:
+            if (config_mode)
+                return true;
+            else
+                return false;   // exec default command
+    }
+    return true;
+}
+
+static uint8_t code2asc(uint8_t code);
+bool command_console_extra(uint8_t code)
+{
+    switch (code) {
+        default:
+            rn42_putc(code2asc(code));
+            return true;
+    }
+    return false;
+}
+
+// convert keycode into ascii charactor
+static uint8_t code2asc(uint8_t code)
+{
+    bool shifted = (get_mods() & (MOD_BIT(KC_LSHIFT)|MOD_BIT(KC_RSHIFT))) ? true : false;
+    switch (code) {
+        case KC_A: return (shifted ? 'A' : 'a');
+        case KC_B: return (shifted ? 'B' : 'b');
+        case KC_C: return (shifted ? 'C' : 'c');
+        case KC_D: return (shifted ? 'D' : 'd');
+        case KC_E: return (shifted ? 'E' : 'e');
+        case KC_F: return (shifted ? 'F' : 'f');
+        case KC_G: return (shifted ? 'G' : 'g');
+        case KC_H: return (shifted ? 'H' : 'h');
+        case KC_I: return (shifted ? 'I' : 'i');
+        case KC_J: return (shifted ? 'J' : 'j');
+        case KC_K: return (shifted ? 'K' : 'k');
+        case KC_L: return (shifted ? 'L' : 'l');
+        case KC_M: return (shifted ? 'M' : 'm');
+        case KC_N: return (shifted ? 'N' : 'n');
+        case KC_O: return (shifted ? 'O' : 'o');
+        case KC_P: return (shifted ? 'P' : 'p');
+        case KC_Q: return (shifted ? 'Q' : 'q');
+        case KC_R: return (shifted ? 'R' : 'r');
+        case KC_S: return (shifted ? 'S' : 's');
+        case KC_T: return (shifted ? 'T' : 't');
+        case KC_U: return (shifted ? 'U' : 'u');
+        case KC_V: return (shifted ? 'V' : 'v');
+        case KC_W: return (shifted ? 'W' : 'w');
+        case KC_X: return (shifted ? 'X' : 'x');
+        case KC_Y: return (shifted ? 'Y' : 'y');
+        case KC_Z: return (shifted ? 'Z' : 'z');
+        case KC_1: return (shifted ? '!' : '1');
+        case KC_2: return (shifted ? '@' : '2');
+        case KC_3: return (shifted ? '#' : '3');
+        case KC_4: return (shifted ? '$' : '4');
+        case KC_5: return (shifted ? '%' : '5');
+        case KC_6: return (shifted ? '^' : '6');
+        case KC_7: return (shifted ? '&' : '7');
+        case KC_8: return (shifted ? '*' : '8');
+        case KC_9: return (shifted ? '(' : '9');
+        case KC_0: return (shifted ? ')' : '0');
+        case KC_ENTER: return '\n';
+        case KC_ESCAPE: return 0x1B;
+        case KC_BSPACE: return '\b';
+        case KC_TAB: return '\t';
+        case KC_SPACE: return ' ';
+        case KC_MINUS: return (shifted ? '_' : '-');
+        case KC_EQUAL: return (shifted ? '+' : '=');
+        case KC_LBRACKET: return (shifted ? '{' : '[');
+        case KC_RBRACKET: return (shifted ? '}' : ']');
+        case KC_BSLASH: return (shifted ? '|' : '\\');
+        case KC_NONUS_HASH: return (shifted ? '|' : '\\');
+        case KC_SCOLON: return (shifted ? ':' : ';');
+        case KC_QUOTE: return (shifted ? '"' : '\'');
+        case KC_GRAVE: return (shifted ? '~' : '`');
+        case KC_COMMA: return (shifted ? '<' : ',');
+        case KC_DOT: return (shifted ? '>' : '.');
+        case KC_SLASH: return (shifted ? '?' : '/');
+        case KC_DELETE: return '\0';    // Delete to disconnect
+        default: return ' ';
+    }
+}
diff --git a/keyboard/hhkb_rn42/rn42/rn42_task.h b/keyboard/hhkb_rn42/rn42/rn42_task.h
new file mode 100644
index 0000000000..8f6c3ab64d
--- /dev/null
+++ b/keyboard/hhkb_rn42/rn42/rn42_task.h
@@ -0,0 +1,10 @@
+#ifndef RN42_TASK_H
+#define RN42_TASK_H
+
+#include <stdbool.h>
+#include "rn42.h"
+
+void rn42_task_init(void);
+void rn42_task(void);
+
+#endif
diff --git a/keyboard/hhkb_rn42/rn42/suart.S b/keyboard/hhkb_rn42/rn42/suart.S
new file mode 100644
index 0000000000..9fa5452928
--- /dev/null
+++ b/keyboard/hhkb_rn42/rn42/suart.S
@@ -0,0 +1,156 @@
+;---------------------------------------------------------------------------;
+; Software implemented UART module                                          ;
+; (C)ChaN, 2005 (http://elm-chan.org/)                                      ;
+;---------------------------------------------------------------------------;
+; Bit rate settings:
+;
+;            1MHz  2MHz  4MHz  6MHz  8MHz  10MHz  12MHz  16MHz  20MHz
+;   2.4kbps   138     -     -     -     -      -      -      -      -
+;   4.8kbps    68   138     -     -     -      -      -      -      -
+;   9.6kbps    33    68   138   208     -      -      -      -      -
+;  19.2kbps     -    33    68   102   138    173    208      -      -
+;  38.4kbps     -     -    33    50    68     85    102    138    172
+;  57.6kbps     -     -    21    33    44     56     68     91    114
+; 115.2kbps     -     -     -     -    21     27     33     44     56
+
+.nolist
+#include <avr/io.h>
+.list
+
+#define	BPS	44 	/* Bit delay. (see above table) */
+#define	BIDIR	0	/* 0:Separated Tx/Rx, 1:Shared Tx/Rx */
+
+#define	OUT_1		sbi _SFR_IO_ADDR(SUART_OUT_PORT), SUART_OUT_BIT	/* Output 1 */
+#define	OUT_0		cbi _SFR_IO_ADDR(SUART_OUT_PORT), SUART_OUT_BIT	/* Output 0 */
+#define	SKIP_IN_1	sbis _SFR_IO_ADDR(SUART_IN_PIN), SUART_IN_BIT	/* Skip if 1 */
+#define	SKIP_IN_0	sbic _SFR_IO_ADDR(SUART_IN_PIN), SUART_IN_BIT	/* Skip if 0 */
+
+
+
+#ifdef SPM_PAGESIZE
+.macro	_LPMI	reg
+	lpm	\reg, Z+
+.endm
+.macro	_MOVW	dh,dl, sh,sl
+	movw	\dl, \sl
+.endm
+#else
+.macro	_LPMI	reg
+	lpm
+	mov	\reg, r0
+	adiw	ZL, 1
+.endm
+.macro	_MOVW	dh,dl, sh,sl
+	mov	\dl, \sl
+	mov	\dh, \sh
+.endm
+#endif
+
+
+
+;---------------------------------------------------------------------------;
+; Transmit a byte in serial format of N81
+;
+;Prototype: void xmit (uint8_t data);
+;Size: 16 words
+
+.global xmit
+.func xmit
+xmit:
+#if BIDIR
+	ldi	r23, BPS-1	;Pre-idle time for bidirectional data line
+5:	dec	r23     	;
+	brne	5b		;/
+#endif
+	in	r0, _SFR_IO_ADDR(SREG)	;Save flags
+
+	com	r24		;C = start bit
+	ldi	r25, 10		;Bit counter
+	cli			;Start critical section
+
+1:	ldi	r23, BPS-1	;----- Bit transferring loop 
+2:	dec	r23     	;Wait for a bit time
+	brne	2b		;/
+	brcs	3f		;MISO = bit to be sent
+	OUT_1			;
+3:	brcc	4f		;
+	OUT_0			;/
+4:	lsr	r24     	;Get next bit into C
+	dec	r25     	;All bits sent?
+	brne	1b	     	;  no, coutinue
+
+	out	_SFR_IO_ADDR(SREG), r0	;End of critical section
+	ret
+.endfunc
+
+
+
+;---------------------------------------------------------------------------;
+; Receive a byte
+;
+;Prototype: uint8_t rcvr (void);
+;Size: 19 words
+
+.global rcvr
+.func rcvr
+rcvr:
+	in	r0, _SFR_IO_ADDR(SREG)	;Save flags
+
+	ldi	r24, 0x80	;Receiving shift reg
+	cli			;Start critical section
+
+1:	SKIP_IN_1		;Wait for idle
+	rjmp	1b
+2:	SKIP_IN_0		;Wait for start bit
+	rjmp	2b
+	ldi	r25, BPS/2	;Wait for half bit time
+3:	dec	r25
+	brne	3b
+
+4:	ldi	r25, BPS	;----- Bit receiving loop
+5:	dec	r25     	;Wait for a bit time
+	brne	5b		;/
+	lsr	r24     	;Next bit
+	SKIP_IN_0		;Get a data bit into r24.7
+	ori	r24, 0x80
+	brcc	4b	     	;All bits received?  no, continue
+
+	out	_SFR_IO_ADDR(SREG), r0	;End of critical section
+	ret
+.endfunc
+
+
+; Not wait for start bit. This should be called after detecting start bit.
+.global recv
+.func recv
+recv:
+	in	r0, _SFR_IO_ADDR(SREG)	;Save flags
+
+	ldi	r24, 0x80	;Receiving shift reg
+	cli			;Start critical section
+
+;1:	SKIP_IN_1		;Wait for idle
+;	rjmp	1b
+;2:	SKIP_IN_0		;Wait for start bit
+;	rjmp	2b
+	ldi	r25, BPS/2	;Wait for half bit time
+3:	dec	r25
+	brne	3b
+
+4:	ldi	r25, BPS	;----- Bit receiving loop
+5:	dec	r25     	;Wait for a bit time
+	brne	5b		;/
+	lsr	r24     	;Next bit
+	SKIP_IN_0		;Get a data bit into r24.7
+	ori	r24, 0x80
+	brcc	4b	     	;All bits received?  no, continue
+
+	ldi	r25, BPS/2	;Wait for half bit time
+6:	dec	r25
+	brne	6b
+7:	SKIP_IN_1		;Wait for stop bit
+	rjmp	7b
+
+	out	_SFR_IO_ADDR(SREG), r0	;End of critical section
+	ret
+.endfunc
diff --git a/keyboard/hhkb_rn42/rn42/suart.h b/keyboard/hhkb_rn42/rn42/suart.h
new file mode 100644
index 0000000000..72725b998f
--- /dev/null
+++ b/keyboard/hhkb_rn42/rn42/suart.h
@@ -0,0 +1,8 @@
+#ifndef SUART
+#define SUART
+
+void xmit(uint8_t);
+uint8_t rcvr(void);
+uint8_t recv(void);
+
+#endif	/* SUART */
-- 
cgit v1.2.3


From 3e7875455ed392ce5238efa0734e82995e1f8040 Mon Sep 17 00:00:00 2001
From: tmk <nobody@nowhere>
Date: Sun, 20 Jul 2014 14:42:44 +0900
Subject: Add flow control by firmware to serial_uart

---
 keyboard/hhkb_rn42/rn42/rn42_task.c | 2 --
 1 file changed, 2 deletions(-)

(limited to 'keyboard/hhkb_rn42/rn42')

diff --git a/keyboard/hhkb_rn42/rn42/rn42_task.c b/keyboard/hhkb_rn42/rn42/rn42_task.c
index 7ec4c1b540..2bc1c7fd04 100644
--- a/keyboard/hhkb_rn42/rn42/rn42_task.c
+++ b/keyboard/hhkb_rn42/rn42/rn42_task.c
@@ -56,9 +56,7 @@ void rn42_task(void)
         // Config mode: print output from RN-42
         while ((c = serial_recv2()) != -1) {
             // without flow control it'll fail to receive data when flooded
-            rn42_cts_hi();
             xprintf("%c", c);
-            rn42_cts_lo();
         }
     } else {
         // Raw mode: interpret output report of LED state
-- 
cgit v1.2.3


From 4b2b32a14b805a363c5dc035a2d1384e60865ad3 Mon Sep 17 00:00:00 2001
From: tmk <nobody@nowhere>
Date: Wed, 23 Jul 2014 12:23:00 +0900
Subject: Add rn42_lined(): connection status(GPIO2)

---
 keyboard/hhkb_rn42/rn42/rn42.c      | 5 +++++
 keyboard/hhkb_rn42/rn42/rn42.h      | 1 +
 keyboard/hhkb_rn42/rn42/rn42_task.c | 2 ++
 3 files changed, 8 insertions(+)

(limited to 'keyboard/hhkb_rn42/rn42')

diff --git a/keyboard/hhkb_rn42/rn42/rn42.c b/keyboard/hhkb_rn42/rn42/rn42.c
index 3fcd64ad6a..e7d8ba45cc 100644
--- a/keyboard/hhkb_rn42/rn42/rn42.c
+++ b/keyboard/hhkb_rn42/rn42/rn42.c
@@ -86,6 +86,11 @@ void rn42_cts_lo(void)
     PORTD &= ~(1<<5);
 }
 
+bool rn42_linked(void)
+{
+    return PINF&(1<<6);
+}
+
 
 static uint8_t keyboard_leds(void) { return 0; }
 
diff --git a/keyboard/hhkb_rn42/rn42/rn42.h b/keyboard/hhkb_rn42/rn42/rn42.h
index 4189733b49..72cbb2d724 100644
--- a/keyboard/hhkb_rn42/rn42/rn42.h
+++ b/keyboard/hhkb_rn42/rn42/rn42.h
@@ -14,5 +14,6 @@ void rn42_disconnect(void);
 bool rn42_rts(void);
 void rn42_cts_hi(void);
 void rn42_cts_lo(void);
+bool rn42_linked(void);
 
 #endif
diff --git a/keyboard/hhkb_rn42/rn42/rn42_task.c b/keyboard/hhkb_rn42/rn42/rn42_task.c
index 2bc1c7fd04..437dd46f49 100644
--- a/keyboard/hhkb_rn42/rn42/rn42_task.c
+++ b/keyboard/hhkb_rn42/rn42/rn42_task.c
@@ -162,8 +162,10 @@ bool command_extra(uint8_t code)
             xprintf("protocol: %s\n", (host_get_driver() == &rn42_driver) ? "RN-42" : "LUFA");
             xprintf("force_usb: %X\n", force_usb);
             xprintf("rn42_autoconnecting(): %X\n", rn42_autoconnecting());
+            xprintf("rn42_linked(): %X\n", rn42_linked());
             xprintf("rn42_rts(): %X\n", rn42_rts());
             xprintf("config_mode: %X\n", config_mode);
+            xprintf("VBUS: %X\n", USBSTA&(1<<VBUS));
             return true;
         case KC_B:
             // battery monitor
-- 
cgit v1.2.3


From ae28b16fc630cc8219676f1bfb9cee41f0b36a79 Mon Sep 17 00:00:00 2001
From: tmk <nobody@nowhere>
Date: Mon, 28 Jul 2014 11:56:02 +0900
Subject: Add battery monitor and LED control

---
 keyboard/hhkb_rn42/rn42/rn42_task.c | 46 ++++++++++++++++++++++++++++++++++++-
 1 file changed, 45 insertions(+), 1 deletion(-)

(limited to 'keyboard/hhkb_rn42/rn42')

diff --git a/keyboard/hhkb_rn42/rn42/rn42_task.c b/keyboard/hhkb_rn42/rn42/rn42_task.c
index 437dd46f49..fd5a814b29 100644
--- a/keyboard/hhkb_rn42/rn42/rn42_task.c
+++ b/keyboard/hhkb_rn42/rn42/rn42_task.c
@@ -13,6 +13,17 @@
 static bool config_mode = false;
 static bool force_usb = false;
 
+static void status_led(bool on)
+{
+    if (on) {
+        DDRE  |=  (1<<6);
+        PORTE &= ~(1<<6);
+    } else {
+        DDRE  |=  (1<<6);
+        PORTE |=  (1<<6);
+    }
+}
+
 static void battery_adc_init(void)
 {
     ADMUX = (1<<REFS1) | (1<<REFS0);                // Ref:2.56V band-gap, Input:ADC0(PF0)
@@ -43,10 +54,35 @@ static uint16_t battery_adc(void)
     return bat;
 }
 
+static void battery_led(bool on)
+{
+    if (on) {
+        DDRF  |=  (1<<5);
+        PORTF &= ~(1<<5);
+    } else {
+        DDRF  &= ~(1<<5);
+        PORTF |=  (1<<5);
+    }
+}
+
+static bool battery_charging(void)
+{
+    // MCP73831:STAT
+    //   Hi-Z:   Shutdown/No Battery
+    //   Low:    Charging
+    //   Hi:     Charged
+    DDRF  &= ~(1<<5);
+    PORTF |=  (1<<5);
+    return PINF&(1<<5) ? false : true;
+}
 
 void rn42_task_init(void)
 {
     battery_adc_init();
+
+    // battery charging(input with pull-up)
+    DDRF  &= ~(1<<5);
+    PORTF |=  (1<<5);
 }
 
 void rn42_task(void)
@@ -108,6 +144,8 @@ void rn42_task(void)
  ******************************************************************************/
 bool command_extra(uint8_t code)
 {
+    uint32_t t;
+    uint16_t b;
     static host_driver_t *prev_driver = &rn42_driver;
     switch (code) {
         case KC_H:
@@ -166,10 +204,16 @@ bool command_extra(uint8_t code)
             xprintf("rn42_rts(): %X\n", rn42_rts());
             xprintf("config_mode: %X\n", config_mode);
             xprintf("VBUS: %X\n", USBSTA&(1<<VBUS));
+            xprintf("battery_charging: %X\n", battery_charging());
             return true;
         case KC_B:
             // battery monitor
-            xprintf("BAT: %04X(%08lX)\n",  battery_adc(), timer_read32());
+            t = timer_read32()/1000;
+            b = battery_adc();
+            xprintf("BAT: %umV(%04X)\t",  (b-16)*5, b);
+            xprintf("%02u:",   t/3600);
+            xprintf("%02u:",   t%3600/60);
+            xprintf("%02u\n",  t%60);
             return true;
         default:
             if (config_mode)
-- 
cgit v1.2.3


From f441ad07ccbb7ed0a6fbe7068f89aacd6dc6ff3d Mon Sep 17 00:00:00 2001
From: tmk <nobody@nowhere>
Date: Mon, 28 Jul 2014 15:12:00 +0900
Subject: Add initial setting of Linked pin

---
 keyboard/hhkb_rn42/rn42/rn42.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

(limited to 'keyboard/hhkb_rn42/rn42')

diff --git a/keyboard/hhkb_rn42/rn42/rn42.c b/keyboard/hhkb_rn42/rn42/rn42.c
index e7d8ba45cc..556c61af95 100644
--- a/keyboard/hhkb_rn42/rn42/rn42.c
+++ b/keyboard/hhkb_rn42/rn42/rn42.c
@@ -25,12 +25,17 @@ host_driver_t rn42_driver = {
 
 void rn42_init(void)
 {
-    // PF7: BT connection control(HiZ: connect, low: disconnect)
     // JTAG disable for PORT F. write JTD bit twice within four cycles.
     MCUCR |= (1<<JTD);
     MCUCR |= (1<<JTD);
+
+    // PF7: BT connection control(high: connect, low: disconnect)
     rn42_autoconnect();
 
+    // PF6: linked(input without pull-up)
+    DDRF  &= ~(1<<6);
+    PORTF &= ~(1<<6);
+
     // PF1: RTS(low: allowed to send, high: not allowed)
     DDRF &= ~(1<<1);
     PORTF &= ~(1<<1);
-- 
cgit v1.2.3


From e4b95410416d98f9d9753a1ce21846256de7c8fa Mon Sep 17 00:00:00 2001
From: tmk <nobody@nowhere>
Date: Mon, 28 Jul 2014 15:52:07 +0900
Subject: Add connection indicator

---
 keyboard/hhkb_rn42/rn42/rn42_task.c | 17 +++++++++++++----
 1 file changed, 13 insertions(+), 4 deletions(-)

(limited to 'keyboard/hhkb_rn42/rn42')

diff --git a/keyboard/hhkb_rn42/rn42/rn42_task.c b/keyboard/hhkb_rn42/rn42/rn42_task.c
index fd5a814b29..2813b1c5ff 100644
--- a/keyboard/hhkb_rn42/rn42/rn42_task.c
+++ b/keyboard/hhkb_rn42/rn42/rn42_task.c
@@ -58,10 +58,10 @@ static void battery_led(bool on)
 {
     if (on) {
         DDRF  |=  (1<<5);
-        PORTF &= ~(1<<5);
+        PORTF &= ~(1<<5);   // Low
     } else {
         DDRF  &= ~(1<<5);
-        PORTF |=  (1<<5);
+        PORTF &= ~(1<<5);   // HiZ
     }
 }
 
@@ -80,9 +80,9 @@ void rn42_task_init(void)
 {
     battery_adc_init();
 
-    // battery charging(input with pull-up)
+    // battery charging(HiZ)
     DDRF  &= ~(1<<5);
-    PORTF |=  (1<<5);
+    PORTF &= ~(1<<5);
 }
 
 void rn42_task(void)
@@ -135,6 +135,15 @@ void rn42_task(void)
             host_set_driver(&lufa_driver);
         }
     }
+
+    /* Battery monitor */
+
+    /* Connection monitor */
+    if (rn42_linked()) {
+        status_led(true);
+    } else {
+        status_led(false);
+    }
 }
 
 
-- 
cgit v1.2.3


From 807ed33a9a29ee3c5248226d0e865d0580d7eebc Mon Sep 17 00:00:00 2001
From: tmk <nobody@nowhere>
Date: Sat, 30 Aug 2014 15:59:41 +0900
Subject: Fix rn42_linked() to use pullup

---
 keyboard/hhkb_rn42/rn42/rn42.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

(limited to 'keyboard/hhkb_rn42/rn42')

diff --git a/keyboard/hhkb_rn42/rn42/rn42.c b/keyboard/hhkb_rn42/rn42/rn42.c
index 556c61af95..bdffad7667 100644
--- a/keyboard/hhkb_rn42/rn42/rn42.c
+++ b/keyboard/hhkb_rn42/rn42/rn42.c
@@ -34,7 +34,7 @@ void rn42_init(void)
 
     // PF6: linked(input without pull-up)
     DDRF  &= ~(1<<6);
-    PORTF &= ~(1<<6);
+    PORTF |=  (1<<6);
 
     // PF1: RTS(low: allowed to send, high: not allowed)
     DDRF &= ~(1<<1);
@@ -93,7 +93,11 @@ void rn42_cts_lo(void)
 
 bool rn42_linked(void)
 {
-    return PINF&(1<<6);
+    // RN-42 GPIO2
+    //   Hi-Z:  Not powered
+    //   High:  Linked
+    //   Low:   Connecting
+    return !rn42_rts() && PINF&(1<<6);
 }
 
 
-- 
cgit v1.2.3


From 02939ab1d831ab7bb02edb28cb0b21fb61bced56 Mon Sep 17 00:00:00 2001
From: tmk <nobody@nowhere>
Date: Thu, 4 Sep 2014 05:30:00 +0900
Subject: Add battery management

---
 keyboard/hhkb_rn42/rn42/battery.c   | 119 ++++++++++++++++++++++++++++++++++++
 keyboard/hhkb_rn42/rn42/battery.h   |  34 +++++++++++
 keyboard/hhkb_rn42/rn42/rn42_task.c |  71 ++++-----------------
 3 files changed, 164 insertions(+), 60 deletions(-)
 create mode 100644 keyboard/hhkb_rn42/rn42/battery.c
 create mode 100644 keyboard/hhkb_rn42/rn42/battery.h

(limited to 'keyboard/hhkb_rn42/rn42')

diff --git a/keyboard/hhkb_rn42/rn42/battery.c b/keyboard/hhkb_rn42/rn42/battery.c
new file mode 100644
index 0000000000..32de864481
--- /dev/null
+++ b/keyboard/hhkb_rn42/rn42/battery.c
@@ -0,0 +1,119 @@
+#include <avr/io.h>
+#include <util/delay.h>
+#include "battery.h"
+
+
+/*
+ * Battery
+ */
+void battery_init(void)
+{
+    // blink 
+    battery_led(LED_ON);  _delay_ms(500);
+    battery_led(LED_OFF); _delay_ms(500);
+    battery_led(LED_ON);  _delay_ms(500);
+    battery_led(LED_OFF); _delay_ms(500);
+    // LED indicates charger status
+    battery_led(LED_CHARGER);
+
+    // ADC setting for voltage monitor
+    // Ref:2.56V band-gap, Input:ADC0(PF0), Prescale:128(16MHz/128=125KHz)
+    ADMUX = (1<<REFS1) | (1<<REFS0);
+    ADCSRA = (1<<ADPS2) | (1<<ADPS1) | (1<<ADPS0);
+    ADCSRA |= (1<<ADEN);
+}
+
+// Indicator for battery
+void battery_led(battery_led_t val)
+{
+    if (val == LED_TOGGLE) {
+        // Toggle LED
+        DDRF  |=  (1<<5);
+        PINF  |=  (1<<5);
+    } else if (val == LED_ON) {
+        // On overriding charger status
+        DDRF  |=  (1<<5);
+        PORTF &= ~(1<<5);
+    } else if (val == LED_OFF) {
+        // Off overriding charger status
+        DDRF  |=  (1<<5);
+        PORTF |=  (1<<5);
+    } else {
+        // Display charger status
+        DDRF  &= ~(1<<5);
+        PORTF &= ~(1<<5);
+    }
+}
+
+bool battery_charging(void)
+{
+    if (!(USBSTA&(1<<VBUS))) return false;
+
+    // MCP73831:STAT
+    //   HiZ:    Shutdown/No Battery
+    //   Low:    Charging
+    //   Hi:     Charged
+
+    // preserve last register status
+    uint8_t ddrf_prev  = DDRF;
+    uint8_t portf_prev = PORTF;
+
+    // Input with pullup
+    DDRF  &= ~(1<<5);
+    PORTF |=  (1<<5);
+    _delay_ms(1);
+    bool charging = PINF&(1<<5) ? false : true;
+
+    // restore last register status
+    DDRF  = (DDRF&~(1<<5))  | (ddrf_prev&(1<<5));
+    PORTF = (PORTF&~(1<<5)) | (portf_prev&(1<<5));
+
+    return charging;
+}
+
+// Returns voltage in mV
+uint16_t battery_voltage(void)
+{
+    volatile uint16_t bat;
+    //ADCSRA |= (1<<ADEN);
+
+    // discard first result
+    ADCSRA |= (1<<ADSC);
+    while (ADCSRA & (1<<ADSC)) ;
+    bat = ADC;
+
+    // discard second result
+    ADCSRA |= (1<<ADSC);
+    while (ADCSRA & (1<<ADSC)) ;
+    bat = ADC;
+
+    ADCSRA |= (1<<ADSC);
+    while (ADCSRA & (1<<ADSC)) ;
+    bat = ADC;
+
+    //ADCSRA &= ~(1<<ADEN);
+
+    return (bat - BATTERY_ADC_OFFSET) * BATTERY_ADC_RESOLUTION;
+}
+
+static bool low_voltage(void) {
+    static bool low = false;
+    uint16_t v = battery_voltage();
+    if (v < BATTERY_VOLTAGE_LOW_LIMIT) {
+        low = true;
+    } else if (v > BATTERY_VOLTAGE_LOW_RECOVERY) {
+        low = false;
+    }
+    return low;
+}
+
+battery_status_t battery_status(void)
+{
+    if (USBSTA&(1<<VBUS)) {
+        /* powered */
+        return battery_charging() ? CHARGING : FULL_CHARGED;
+    } else {
+        /* not powered */
+        return low_voltage() ? LOW_VOLTAGE : DISCHARGING;
+    }
+}
diff --git a/keyboard/hhkb_rn42/rn42/battery.h b/keyboard/hhkb_rn42/rn42/battery.h
new file mode 100644
index 0000000000..60fc8adfcb
--- /dev/null
+++ b/keyboard/hhkb_rn42/rn42/battery.h
@@ -0,0 +1,34 @@
+#ifndef POWER_H
+#define POWER_H
+
+#include <stdint.h>
+#include <stdbool.h>
+
+typedef enum {
+    FULL_CHARGED,
+    CHARGING,
+    DISCHARGING,
+    LOW_VOLTAGE,
+} battery_status_t;
+
+typedef enum {
+    LED_CHARGER = 0,
+    LED_ON,
+    LED_OFF,
+    LED_TOGGLE,
+} battery_led_t;
+
+/* Battery API */
+void battery_init(void);
+void battery_led(battery_led_t val);
+bool battery_charging(void);
+uint16_t battery_voltage(void);
+battery_status_t battery_status(void);
+
+#define BATTERY_VOLTAGE_LOW_LIMIT       3500
+#define BATTERY_VOLTAGE_LOW_RECOVERY    3700
+// ADC offset:16, resolution:5mV
+#define BATTERY_ADC_OFFSET              16
+#define BATTERY_ADC_RESOLUTION          5
+
+#endif
diff --git a/keyboard/hhkb_rn42/rn42/rn42_task.c b/keyboard/hhkb_rn42/rn42/rn42_task.c
index 2813b1c5ff..07b34e111a 100644
--- a/keyboard/hhkb_rn42/rn42/rn42_task.c
+++ b/keyboard/hhkb_rn42/rn42/rn42_task.c
@@ -9,6 +9,7 @@
 #include "print.h"
 #include "timer.h"
 #include "command.h"
+#include "battery.h"
 
 static bool config_mode = false;
 static bool force_usb = false;
@@ -24,65 +25,9 @@ static void status_led(bool on)
     }
 }
 
-static void battery_adc_init(void)
-{
-    ADMUX = (1<<REFS1) | (1<<REFS0);                // Ref:2.56V band-gap, Input:ADC0(PF0)
-    ADCSRA = (1<<ADPS2) | (1<<ADPS1) | (1<<ADPS0);  // Prescale:128 16MHz/128=125KHz
-    ADCSRA |= (1<<ADEN);                            // enable ADC
-}
-
-static uint16_t battery_adc(void)
-{
-    volatile uint16_t bat;
-    ADCSRA |= (1<<ADEN);
-
-    // discard first result
-    ADCSRA |= (1<<ADSC);
-    while (ADCSRA & (1<<ADSC)) ;
-    bat = ADC;
-
-    // discard second result
-    ADCSRA |= (1<<ADSC);
-    while (ADCSRA & (1<<ADSC)) ;
-    bat = ADC;
-
-    ADCSRA |= (1<<ADSC);
-    while (ADCSRA & (1<<ADSC)) ;
-    bat = ADC;
-
-    ADCSRA &= ~(1<<ADEN);
-    return bat;
-}
-
-static void battery_led(bool on)
-{
-    if (on) {
-        DDRF  |=  (1<<5);
-        PORTF &= ~(1<<5);   // Low
-    } else {
-        DDRF  &= ~(1<<5);
-        PORTF &= ~(1<<5);   // HiZ
-    }
-}
-
-static bool battery_charging(void)
-{
-    // MCP73831:STAT
-    //   Hi-Z:   Shutdown/No Battery
-    //   Low:    Charging
-    //   Hi:     Charged
-    DDRF  &= ~(1<<5);
-    PORTF |=  (1<<5);
-    return PINF&(1<<5) ? false : true;
-}
-
 void rn42_task_init(void)
 {
-    battery_adc_init();
-
-    // battery charging(HiZ)
-    DDRF  &= ~(1<<5);
-    PORTF &= ~(1<<5);
+    battery_init();
 }
 
 void rn42_task(void)
@@ -136,7 +81,12 @@ void rn42_task(void)
         }
     }
 
-    /* Battery monitor */
+    /* Low voltage alert */
+    if (battery_status() == LOW_VOLTAGE) {
+        battery_led(LED_ON);
+    } else {
+        battery_led(LED_CHARGER);
+    }
 
     /* Connection monitor */
     if (rn42_linked()) {
@@ -214,12 +164,13 @@ bool command_extra(uint8_t code)
             xprintf("config_mode: %X\n", config_mode);
             xprintf("VBUS: %X\n", USBSTA&(1<<VBUS));
             xprintf("battery_charging: %X\n", battery_charging());
+            xprintf("battery_status: %X\n", battery_status());
             return true;
         case KC_B:
             // battery monitor
             t = timer_read32()/1000;
-            b = battery_adc();
-            xprintf("BAT: %umV(%04X)\t",  (b-16)*5, b);
+            b = battery_voltage();
+            xprintf("BAT: %umV\t", b);
             xprintf("%02u:",   t/3600);
             xprintf("%02u:",   t%3600/60);
             xprintf("%02u\n",  t%60);
-- 
cgit v1.2.3


From 3b81ffc16c8cdf260c25f0778d32c721af4f105c Mon Sep 17 00:00:00 2001
From: tmk <nobody@nowhere>
Date: Thu, 4 Sep 2014 17:08:23 +0900
Subject: Monitor battery and alert low voltage

---
 keyboard/hhkb_rn42/rn42/battery.c   | 13 ++++++----
 keyboard/hhkb_rn42/rn42/battery.h   |  1 +
 keyboard/hhkb_rn42/rn42/rn42_task.c | 47 +++++++++++++++++++++++++++++++++----
 3 files changed, 52 insertions(+), 9 deletions(-)

(limited to 'keyboard/hhkb_rn42/rn42')

diff --git a/keyboard/hhkb_rn42/rn42/battery.c b/keyboard/hhkb_rn42/rn42/battery.c
index 32de864481..c6988fe336 100644
--- a/keyboard/hhkb_rn42/rn42/battery.c
+++ b/keyboard/hhkb_rn42/rn42/battery.c
@@ -49,10 +49,11 @@ bool battery_charging(void)
 {
     if (!(USBSTA&(1<<VBUS))) return false;
 
-    // MCP73831:STAT
-    //   HiZ:    Shutdown/No Battery
-    //   Low:    Charging
-    //   Hi:     Charged
+    // Charger Status:
+    //   MCP73831   MCP73832   LTC4054  Status
+    //   Hi-Z       Hi-Z       Hi-Z     Shutdown/No Battery
+    //   Low        Low        Low      Charging
+    //   Hi         Hi-Z       Hi-Z     Charged
 
     // preserve last register status
     uint8_t ddrf_prev  = DDRF;
@@ -68,6 +69,10 @@ bool battery_charging(void)
     DDRF  = (DDRF&~(1<<5))  | (ddrf_prev&(1<<5));
     PORTF = (PORTF&~(1<<5)) | (portf_prev&(1<<5));
 
+    // TODO: With MCP73831 this can not get stable status when charging.
+    // LED is powered from PSEL line(USB or Lipo)
+    // due to weak low output of STAT pin?
+    // due to pull-up'd via resitor and LED?
     return charging;
 }
 
diff --git a/keyboard/hhkb_rn42/rn42/battery.h b/keyboard/hhkb_rn42/rn42/battery.h
index 60fc8adfcb..180d4dcfaa 100644
--- a/keyboard/hhkb_rn42/rn42/battery.h
+++ b/keyboard/hhkb_rn42/rn42/battery.h
@@ -9,6 +9,7 @@ typedef enum {
     CHARGING,
     DISCHARGING,
     LOW_VOLTAGE,
+    UNKNOWN,
 } battery_status_t;
 
 typedef enum {
diff --git a/keyboard/hhkb_rn42/rn42/rn42_task.c b/keyboard/hhkb_rn42/rn42/rn42_task.c
index 07b34e111a..30914452e5 100644
--- a/keyboard/hhkb_rn42/rn42/rn42_task.c
+++ b/keyboard/hhkb_rn42/rn42/rn42_task.c
@@ -81,13 +81,50 @@ void rn42_task(void)
         }
     }
 
-    /* Low voltage alert */
-    if (battery_status() == LOW_VOLTAGE) {
-        battery_led(LED_ON);
-    } else {
-        battery_led(LED_CHARGER);
+
+    static uint16_t prev_timer = 0;
+    static uint8_t sec = 0;
+    // NOTE: not exact 1 sec
+    if (timer_elapsed(prev_timer) > 1000) {
+        /* every second */
+        prev_timer = timer_read();
+
+        /* Low voltage alert */
+        uint8_t bs = battery_status();
+        if (bs == LOW_VOLTAGE) {
+            battery_led(LED_ON);
+        } else {
+            battery_led(LED_CHARGER);
+        }
+
+        static uint8_t prev_status = UNKNOWN;
+        if (bs != prev_status) {
+            prev_status = bs;
+            switch (bs) {
+                case FULL_CHARGED:  xprintf("FULL_CHARGED\n"); break;
+                case CHARGING:      xprintf("CHARGING\n"); break;
+                case DISCHARGING:   xprintf("DISCHARGING\n"); break;
+                case LOW_VOLTAGE:   xprintf("LOW_VOLTAGE\n"); break;
+                default:            xprintf("UNKNOWN STATUS\n"); break;
+            };
+        }
+
+        /* every minute */
+        if (sec == 0) {
+            uint32_t t = timer_read32()/1000;
+            uint16_t v = battery_voltage();
+            uint8_t h = t/3600;
+            uint8_t m = t%3600/60;
+            uint8_t s = t%60;
+            xprintf("%02u:%02u:%02u\t%umV\n", h, m, s, v);
+            /* TODO: xprintf doesn't work for this.
+            xprintf("%02u:%02u:%02u\t%umV\n", (t/3600), (t%3600/60), (t%60), v);
+            */
+        }
+        sec++; sec = sec%60;
     }
 
+
     /* Connection monitor */
     if (rn42_linked()) {
         status_led(true);
-- 
cgit v1.2.3


From d8dd18b4217ce56ee3248e3b09598196e0b6731c Mon Sep 17 00:00:00 2001
From: tmk <nobody@nowhere>
Date: Fri, 5 Sep 2014 11:37:05 +0900
Subject: Improve rn42_task time resolution

---
 keyboard/hhkb_rn42/rn42/rn42_task.c | 12 +++++-------
 1 file changed, 5 insertions(+), 7 deletions(-)

(limited to 'keyboard/hhkb_rn42/rn42')

diff --git a/keyboard/hhkb_rn42/rn42/rn42_task.c b/keyboard/hhkb_rn42/rn42/rn42_task.c
index 30914452e5..31a415cedf 100644
--- a/keyboard/hhkb_rn42/rn42/rn42_task.c
+++ b/keyboard/hhkb_rn42/rn42/rn42_task.c
@@ -83,11 +83,10 @@ void rn42_task(void)
 
 
     static uint16_t prev_timer = 0;
-    static uint8_t sec = 0;
-    // NOTE: not exact 1 sec
-    if (timer_elapsed(prev_timer) > 1000) {
+    uint16_t e = timer_elapsed(prev_timer);
+    if (e > 1000) {
         /* every second */
-        prev_timer = timer_read();
+        prev_timer += e/1000*1000;
 
         /* Low voltage alert */
         uint8_t bs = battery_status();
@@ -110,8 +109,8 @@ void rn42_task(void)
         }
 
         /* every minute */
-        if (sec == 0) {
-            uint32_t t = timer_read32()/1000;
+        uint32_t t = timer_read32()/1000;
+        if (t%60 == 0) {
             uint16_t v = battery_voltage();
             uint8_t h = t/3600;
             uint8_t m = t%3600/60;
@@ -121,7 +120,6 @@ void rn42_task(void)
             xprintf("%02u:%02u:%02u\t%umV\n", (t/3600), (t%3600/60), (t%60), v);
             */
         }
-        sec++; sec = sec%60;
     }
 
 
-- 
cgit v1.2.3


From 2015027da325e9f9b602af1f36ceeeebbcd6c78d Mon Sep 17 00:00:00 2001
From: tmk <nobody@nowhere>
Date: Sat, 20 Sep 2014 06:12:49 +0900
Subject: Add FET swtich for battery ADC

---
 keyboard/hhkb_rn42/rn42/battery.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

(limited to 'keyboard/hhkb_rn42/rn42')

diff --git a/keyboard/hhkb_rn42/rn42/battery.c b/keyboard/hhkb_rn42/rn42/battery.c
index c6988fe336..0320e1baf1 100644
--- a/keyboard/hhkb_rn42/rn42/battery.c
+++ b/keyboard/hhkb_rn42/rn42/battery.c
@@ -21,6 +21,10 @@ void battery_init(void)
     ADMUX = (1<<REFS1) | (1<<REFS0);
     ADCSRA = (1<<ADPS2) | (1<<ADPS1) | (1<<ADPS0);
     ADCSRA |= (1<<ADEN);
+
+    // ADC disable voltate divider(PF4)
+    DDRF  |=  (1<<4);
+    PORTF &= ~(1<<4);
 }
 
 // Indicator for battery
@@ -79,6 +83,10 @@ bool battery_charging(void)
 // Returns voltage in mV
 uint16_t battery_voltage(void)
 {
+    // ADC disable voltate divider(PF4)
+    DDRF  |=  (1<<4);
+    PORTF |=  (1<<4);
+
     volatile uint16_t bat;
     //ADCSRA |= (1<<ADEN);
 
@@ -98,6 +106,10 @@ uint16_t battery_voltage(void)
 
     //ADCSRA &= ~(1<<ADEN);
 
+    // ADC disable voltate divider(PF4)
+    DDRF  |=  (1<<4);
+    PORTF &= ~(1<<4);
+
     return (bat - BATTERY_ADC_OFFSET) * BATTERY_ADC_RESOLUTION;
 }
 
-- 
cgit v1.2.3


From bfd2d969b48eb2f381137383c6262b60e03cf5b1 Mon Sep 17 00:00:00 2001
From: tmk <nobody@nowhere>
Date: Mon, 22 Sep 2014 14:20:49 +0900
Subject: Add keyboard LED control via Bluetooth

---
 keyboard/hhkb_rn42/rn42/rn42.c      | 6 ++++--
 keyboard/hhkb_rn42/rn42/rn42.h      | 1 +
 keyboard/hhkb_rn42/rn42/rn42_task.c | 6 +++---
 3 files changed, 8 insertions(+), 5 deletions(-)

(limited to 'keyboard/hhkb_rn42/rn42')

diff --git a/keyboard/hhkb_rn42/rn42/rn42.c b/keyboard/hhkb_rn42/rn42/rn42.c
index bdffad7667..1565b4cf14 100644
--- a/keyboard/hhkb_rn42/rn42/rn42.c
+++ b/keyboard/hhkb_rn42/rn42/rn42.c
@@ -101,7 +101,9 @@ bool rn42_linked(void)
 }
 
 
-static uint8_t keyboard_leds(void) { return 0; }
+static uint8_t leds = 0;
+static uint8_t keyboard_leds(void) { return leds; }
+void rn42_set_leds(uint8_t l) { leds = l; }
 
 static void send_keyboard(report_keyboard_t *report)
 {
@@ -199,7 +201,7 @@ host_driver_t rn42_config_driver = {
     config_send_consumer
 };
 
-static uint8_t config_keyboard_leds(void) { return 0; }
+static uint8_t config_keyboard_leds(void) { return leds; }
 static void config_send_keyboard(report_keyboard_t *report) {}
 static void config_send_mouse(report_mouse_t *report) {}
 static void config_send_system(uint16_t data) {}
diff --git a/keyboard/hhkb_rn42/rn42/rn42.h b/keyboard/hhkb_rn42/rn42/rn42.h
index 72cbb2d724..5283a3648c 100644
--- a/keyboard/hhkb_rn42/rn42/rn42.h
+++ b/keyboard/hhkb_rn42/rn42/rn42.h
@@ -15,5 +15,6 @@ bool rn42_rts(void);
 void rn42_cts_hi(void);
 void rn42_cts_lo(void);
 bool rn42_linked(void);
+void rn42_set_leds(uint8_t l);
 
 #endif
diff --git a/keyboard/hhkb_rn42/rn42/rn42_task.c b/keyboard/hhkb_rn42/rn42/rn42_task.c
index 31a415cedf..c3359ed506 100644
--- a/keyboard/hhkb_rn42/rn42/rn42_task.c
+++ b/keyboard/hhkb_rn42/rn42/rn42_task.c
@@ -7,6 +7,7 @@
 #include "lufa.h"
 #include "rn42_task.h"
 #include "print.h"
+#include "debug.h"
 #include "timer.h"
 #include "command.h"
 #include "battery.h"
@@ -45,7 +46,6 @@ void rn42_task(void)
             // LED Out report: 0xFE, 0x02, 0x01, <leds>
             // To get the report over UART set bit3 with SH, command.
             static enum {LED_INIT, LED_FE, LED_02, LED_01} state = LED_INIT;
-            xprintf("%02X\n", c);
             switch (state) {
                 case LED_INIT:
                     if (c == 0xFE) state = LED_FE;
@@ -60,8 +60,8 @@ void rn42_task(void)
                     else           state = LED_INIT;
                     break;
                 case LED_01:
-                    // TODO: move to rn42.c and make accessible with keyboard_leds()
-                    xprintf("LED status: %02X\n", c);
+                    dprintf("LED status: %02X\n", c);
+                    rn42_set_leds(c);
                     state = LED_INIT;
                     break;
                 default:
-- 
cgit v1.2.3


From 608ebe2686bdb3fdbd0426731cabdf6082c57b53 Mon Sep 17 00:00:00 2001
From: tmk <nobody@nowhere>
Date: Sun, 23 Nov 2014 13:08:05 +0900
Subject: Matrix power saving

---
 keyboard/hhkb_rn42/rn42/main.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'keyboard/hhkb_rn42/rn42')

diff --git a/keyboard/hhkb_rn42/rn42/main.c b/keyboard/hhkb_rn42/rn42/main.c
index a3a37c0747..43d887067d 100644
--- a/keyboard/hhkb_rn42/rn42/main.c
+++ b/keyboard/hhkb_rn42/rn42/main.c
@@ -85,7 +85,7 @@ int main(void)
     print("Keyboard start.\n");
     while (1) {
         while (USB_DeviceState == DEVICE_STATE_Suspended) {
-            suspend_power_down();
+            suspend_power_down(WDTO_120MS);
             if (USB_Device_RemoteWakeupEnabled && suspend_wakeup_condition()) {
                     USB_Device_SendRemoteWakeup();
             }
-- 
cgit v1.2.3