From 9e3844db07e684365837ca5d5f9bcd4a2cb993a6 Mon Sep 17 00:00:00 2001 From: Björn Stenberg Date: Wed, 31 Dec 2008 21:02:56 +0000 Subject: Updated Fuze button code. FS#9645 by Thomas Martitz. git-svn-id: svn://svn.rockbox.org/rockbox/trunk@19629 a1c6a512-1295-4272-9138-f99709370657 --- .../target/arm/as3525/sansa-fuze/button-fuze.c | 257 +++++++++++++++------ .../target/arm/as3525/sansa-fuze/button-target.h | 11 +- 2 files changed, 188 insertions(+), 80 deletions(-) (limited to 'firmware/target/arm/as3525/sansa-fuze') diff --git a/firmware/target/arm/as3525/sansa-fuze/button-fuze.c b/firmware/target/arm/as3525/sansa-fuze/button-fuze.c index 36a0f3aeda..2414900727 100644 --- a/firmware/target/arm/as3525/sansa-fuze/button-fuze.c +++ b/firmware/target/arm/as3525/sansa-fuze/button-fuze.c @@ -7,7 +7,8 @@ * \/ \/ \/ \/ \/ * $Id$ * - * Copyright (C) 2006 by Barry Wardell + * Copyright (C) 2008 by Thomas Martitz + * Copyright (C) 2008 by Dominik Wenger * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License @@ -19,118 +20,229 @@ * ****************************************************************************/ -/* Taken from button-h10.c by Barry Wardell and reverse engineering by MrH. */ + +/* Basic button driver for the Fuze + * + * TODO: - Get the wheel working with interrupts + * - find that Home button + */ #include "system.h" #include "button.h" +#include "button-target.h" #include "backlight.h" -#include "powermgmt.h" -#define WHEEL_REPEAT_INTERVAL 300000 -#define WHEEL_FAST_ON_INTERVAL 20000 -#define WHEEL_FAST_OFF_INTERVAL 60000 +#define WHEEL_REPEAT_INTERVAL 30 #define WHEELCLICKS_PER_ROTATION 48 /* wheelclicks per full rotation */ -/* Clickwheel */ #ifndef BOOTLOADER -static unsigned int old_wheel_value = 0; -static unsigned int wheel_repeat = BUTTON_NONE; -static unsigned int wheel_click_count = 0; -static unsigned int wheel_delta = 0; -static int wheel_fast_mode = 0; -static unsigned long last_wheel_usec = 0; -static unsigned long wheel_velocity = 0; -static long last_wheel_post = 0; -static long next_backlight_on = 0; /* Buttons */ static bool hold_button = false; static bool hold_button_old = false; -#define _button_hold() hold_button #else -#define _button_hold() false /* FIXME */ -#endif /* BOOTLOADER */ -static int int_btn = BUTTON_NONE; +#define hold_button false +#endif /* !BOOTLOADER */ +static int int_btn = BUTTON_NONE; +static short dbop_din = BUTTON_NONE; void button_init_device(void) { + GPIOA_DIR |= (1<<1); + GPIOA_PIN(1) = (1<<1); +} + +/* clickwheel */ +#if !defined(BOOTLOADER) && defined(HAVE_SCROLLWHEEL) +static void get_wheel(void) +{ + static unsigned int old_wheel_value = 0; + static unsigned int wheel_value = 0; + static unsigned int wheel_repeat = BUTTON_NONE; + /* getting BUTTON_REPEAT works like this: We increment repeat by if the + * wheel was turned, and decrement it by 1 each tick, + * that means: if you change the wheel fast enough, repeat will be >1 and + * we send BUTTON_REPEAT + */ + static int repeat; + /* we omit 3 of 4 posts to the button_queue, that works better, so count */ + static int counter = 0; + /* Read wheel + * Bits 13 and 14 of DBOP_DIN change as follows: + * Clockwise rotation 00 -> 01 -> 11 -> 10 -> 00 + * Counter-clockwise 00 -> 10 -> 11 -> 01 -> 00 + */ + static const unsigned char wheel_tbl[2][4] = + { + { 2, 0, 3, 1 }, /* Clockwise rotation */ + { 1, 3, 0, 2 }, /* Counter-clockwise */ + }; + wheel_value = dbop_din & (1<<13|1<<14); + wheel_value >>= 13; + /* did the wheel value change? */ + if (!hold_button) + { + unsigned int btn = BUTTON_NONE; + if (old_wheel_value == wheel_tbl[0][wheel_value]) + btn = BUTTON_SCROLL_FWD; + else if (old_wheel_value == wheel_tbl[1][wheel_value]) + btn = BUTTON_SCROLL_BACK; + + if (btn != BUTTON_NONE) + { + if (btn != wheel_repeat) + { + /* direction reversals nullify repeats */ + wheel_repeat = btn; + repeat = 0; + } + if (btn != BUTTON_NONE) + { + /* generate repeats if quick enough */ + if (repeat > 0) + { + btn |= BUTTON_REPEAT; + } + repeat += 2; + /* the wheel is more reliable if we don't send ever change, + * every 4th is basically one "physical click" is 1 item in + * the rockbox menus */ + if (queue_empty(&button_queue) && ++counter >= 4) + { + backlight_on(); + /* 1<<24 is rather arbitary, seems to work well */ + queue_post(&button_queue, btn, 1<<24); + /* message posted - reset count */ + counter = 0; + } + } + } + } + if (repeat > 0) + repeat--; + else + repeat = 0; + old_wheel_value = wheel_value; +} +#endif /* !defined(BOOTLOADER) && defined(SCROLLWHEEL) */ + +#if !defined(BOOTLOADER) +/* get hold button state */ +static void get_hold(void) +{ + hold_button = dbop_din & (1<<12); } +#endif bool button_hold(void) { - return _button_hold(); + return hold_button; } -/* clickwheel */ -#ifndef BOOTLOADER -void clickwheel_int(void) +static void get_power(void) { + if (dbop_din & (1<<8)) + int_btn |= BUTTON_POWER; } -#endif /* BOOTLOADER */ -/* device buttons */ +static void get_button_from_dbob(void) +{ + int_btn &= ~(BUTTON_HOLD| + BUTTON_POWER); + + /* Wait for fifo to empty */ + while ((DBOP_STAT & (1<<10)) == 0); + + DBOP_CTRL |= (1<<19); + DBOP_CTRL &= ~(1<<16); /* disable output */ + + DBOP_TIMPOL_01 = 0xe167e167; + DBOP_TIMPOL_23 = 0xe167006e; + int loop = 0; + do + { + asm volatile ("nop\n"); + loop++; + } while(loop < 64); + + DBOP_CTRL |= (1<<15); /* start read */ + int temp; + do + { + temp = DBOP_STAT; + } while ((temp & (1<<16)) == 0); /* wait for valid data */ + + dbop_din = DBOP_DIN; /* now read */ + + DBOP_TIMPOL_01 = 0x6e167; + DBOP_TIMPOL_23 = 0xa167e06f; + + DBOP_CTRL |= (1<<16); + DBOP_CTRL &= ~(1<<19); -/* device buttons */ -void button_int(void) +#if !defined(BOOTLOADER) + get_hold(); +#if defined(HAVE_SCROLLWHEEL) + get_wheel(); +#endif +#endif + get_power(); +} + +static void get_button_from_gpio(void) { - int dir_save_b = 0; - int afsel_save_b = 0; - int dir_save_c = 0; - int afsel_save_c = 0; - - int_btn = BUTTON_NONE; - - /* Save the current direction and afsel */ - dir_save_b = GPIOB_DIR; - afsel_save_b = GPIOB_AFSEL; - dir_save_c = GPIOC_DIR; - afsel_save_c = GPIOC_AFSEL; - - GPIOB_DIR = 0; - GPIOB_AFSEL = 0; - GPIOC_DIR = 0; - GPIOC_AFSEL = 0; - - /* These should not be needed with button event interupts */ - /* they are necessary now to clear out lcd data */ - GPIOC_PIN(0) |= 1; - GPIOC_PIN(1) |= 1; - GPIOC_PIN(2) |= 1; - GPIOC_PIN(3) |= 1; - GPIOC_PIN(4) |= 1; - GPIOC_PIN(5) |= 1; - GPIOC_PIN(6) |= 1; - GPIOC_PIN(7) |= 1; + /* reset buttons we're going to read */ + int_btn &= ~(BUTTON_LEFT| + BUTTON_RIGHT| + BUTTON_UP| + BUTTON_DOWN| + BUTTON_SELECT); + if(hold_button) + return; + /* set afsel, so that we can read our buttons */ + GPIOC_AFSEL &= ~(1<<2|1<<3|1<<4|1<<5|1<<6); + /* set dir so we can read our buttons (but reset the C pins first) */ + GPIOB_DIR &= ~(1<<4); + GPIOC_DIR |= (1<<2|1<<3|1<<4|1<<5|1<<6); + GPIOC_PIN(2) |= (1<<2); + GPIOC_PIN(3) |= (1<<3); + GPIOC_PIN(4) |= (1<<4); + GPIOC_PIN(5) |= (1<<5); + GPIOC_PIN(6) |= (1<<6); + + GPIOC_DIR &= ~(1<<2|1<<3|1<<4|1<<5|1<<6); + + /* small delay needed to read buttons correctly */ + int delay = 50; + while(delay >0) delay--; /* direct GPIO connections */ - if (GPIOB_PIN(4)) - int_btn |= BUTTON_POWER; + if (!GPIOC_PIN(3)) + int_btn |= BUTTON_LEFT; + if (!GPIOC_PIN(2)) + int_btn |= BUTTON_UP; if (!GPIOC_PIN(6)) int_btn |= BUTTON_DOWN; if (!GPIOC_PIN(5)) int_btn |= BUTTON_RIGHT; if (!GPIOC_PIN(4)) int_btn |= BUTTON_SELECT; - if (!GPIOC_PIN(3)) - int_btn |= BUTTON_LEFT; - if (!GPIOC_PIN(2)) - int_btn |= BUTTON_UP; - /* return to settings needed for lcd */ - GPIOB_DIR = dir_save_b; - GPIOB_AFSEL = afsel_save_b; - GPIOC_DIR = dir_save_c; - GPIOC_AFSEL = afsel_save_c; + GPIOC_DIR |= (1<<2|1<<3|1<<4|1<<5|1<<6); + GPIOC_AFSEL |= (1<<2|1<<3|1<<4|1<<5|1<<6); } +static inline void get_buttons_from_hw(void) +{ + get_button_from_dbob(); + get_button_from_gpio(); +} /* * Get button pressed from hardware */ int button_read_device(void) { -#ifdef BOOTLOADER - /* Read buttons directly in the bootloader */ - button_int(); -#else + get_buttons_from_hw(); +#ifndef BOOTLOADER /* light handling */ if (hold_button != hold_button_old) { @@ -139,6 +251,5 @@ int button_read_device(void) } #endif /* BOOTLOADER */ - /* The int_btn variable is set in the button interrupt handler */ - return int_btn; + return int_btn; /* set in button_int */ } diff --git a/firmware/target/arm/as3525/sansa-fuze/button-target.h b/firmware/target/arm/as3525/sansa-fuze/button-target.h index be72e1a35e..75ce3d060e 100644 --- a/firmware/target/arm/as3525/sansa-fuze/button-target.h +++ b/firmware/target/arm/as3525/sansa-fuze/button-target.h @@ -27,13 +27,9 @@ #define HAS_BUTTON_HOLD -bool button_hold(void); void button_init_device(void); +bool button_hold(void); int button_read_device(void); -#ifndef BOOTLOADER -void clickwheel_int(void); -#endif -void button_int(void); /* Sandisk Sansa Fuze button codes */ @@ -51,11 +47,12 @@ void button_int(void); #define BUTTON_SCROLL_BACK 0x00000080 #define BUTTON_SCROLL_FWD 0x00000100 -#define BUTTON_HOLD 0x00000200 +#define BUTTON_HOLD 0x00000400 #define BUTTON_MAIN (BUTTON_HOME|BUTTON_DOWN|BUTTON_RIGHT|BUTTON_LEFT \ |BUTTON_SELECT|BUTTON_UP|BUTTON_POWER \ - |BUTTON_SCROLLBACK|BUTTON_SCROLL_FWD|BUTTON_HOLD) + |BUTTON_SCROLL_BACK|BUTTON_SCROLL_FWD| \ + |BUTTON_HOLD) /* No Remote control */ #define BUTTON_REMOTE 0 -- cgit v1.2.3