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kernel.cpp
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//
// kernel.cpp
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "kernel.h"
#include <errno.h>
#include <math.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <circle/gpiopin.h>
CKernel *static_kernel = NULL;
#define MAX_KEY_CODES 128
#define TICKS_PER_SECOND 1000000L
// Usb key states
static bool key_states[MAX_KEY_CODES];
static unsigned char mod_states;
static bool uiLeftShift = false;
static bool uiRightShift = false;
static int vol_percent_to_vchiq(int percent) {
int range = VCHIQ_SOUND_VOLUME_MAX-(-2720);
return range * ((float)percent)/100.0 + (-2720);
}
// Real keyboard matrix states
static bool kbdMatrixStates[8][8];
// These for translating row/col scans into equivalent keycodes.
#if defined(RASPI_PLUS4) | defined(RASPI_PLUS4EMU)
static long kbdMatrixKeyCodes[8][8] = {
{KEYCODE_Backspace, KEYCODE_3, KEYCODE_5, KEYCODE_7, KEYCODE_9, KEYCODE_Down, KEYCODE_Left, KEYCODE_1},
{KEYCODE_Return, KEYCODE_w, KEYCODE_r, KEYCODE_y, KEYCODE_i, KEYCODE_p, KEYCODE_Dash, KEYCODE_BackQuote},
{KEYCODE_BackSlash, KEYCODE_a, KEYCODE_d, KEYCODE_g, KEYCODE_j, KEYCODE_l, KEYCODE_SingleQuote, KEYCODE_Tab},
{KEYCODE_F7, KEYCODE_4, KEYCODE_6, KEYCODE_8, KEYCODE_0, KEYCODE_Up, KEYCODE_Right, KEYCODE_2},
{KEYCODE_F1, KEYCODE_z, KEYCODE_c, KEYCODE_b, KEYCODE_m, KEYCODE_Period, KEYCODE_RightShift, KEYCODE_Space},
{KEYCODE_F3, KEYCODE_s, KEYCODE_f, KEYCODE_h, KEYCODE_k, KEYCODE_SemiColon, KEYCODE_RightBracket, KEYCODE_LeftControl},
{KEYCODE_F5, KEYCODE_e, KEYCODE_t, KEYCODE_u, KEYCODE_o, KEYCODE_LeftBracket, KEYCODE_Equals, KEYCODE_q},
{KEYCODE_Insert, KEYCODE_LeftShift, KEYCODE_x, KEYCODE_v, KEYCODE_n, KEYCODE_Comma, KEYCODE_Slash, KEYCODE_Escape},
};
#else
static long kbdMatrixKeyCodes[8][8] = {
{KEYCODE_Backspace, KEYCODE_3, KEYCODE_5, KEYCODE_7, KEYCODE_9, KEYCODE_Dash, KEYCODE_Insert, KEYCODE_1},
{KEYCODE_Return, KEYCODE_w, KEYCODE_r, KEYCODE_y, KEYCODE_i, KEYCODE_p, KEYCODE_RightBracket, KEYCODE_BackQuote},
{KEYCODE_Right, KEYCODE_a, KEYCODE_d, KEYCODE_g, KEYCODE_j, KEYCODE_l, KEYCODE_SingleQuote, KEYCODE_Tab},
{KEYCODE_F7, KEYCODE_4, KEYCODE_6, KEYCODE_8, KEYCODE_0, KEYCODE_Equals, KEYCODE_Home, KEYCODE_2},
{KEYCODE_F1, KEYCODE_z, KEYCODE_c, KEYCODE_b, KEYCODE_m, KEYCODE_Period, KEYCODE_RightShift, KEYCODE_Space},
{KEYCODE_F3, KEYCODE_s, KEYCODE_f, KEYCODE_h, KEYCODE_k, KEYCODE_SemiColon, KEYCODE_BackSlash, KEYCODE_LeftControl},
{KEYCODE_F5, KEYCODE_e, KEYCODE_t, KEYCODE_u, KEYCODE_o, KEYCODE_LeftBracket, KEYCODE_Delete, KEYCODE_q},
{KEYCODE_Down, KEYCODE_LeftShift, KEYCODE_x, KEYCODE_v, KEYCODE_n, KEYCODE_Comma, KEYCODE_Slash, KEYCODE_Escape},
};
#endif
static int kbdRestoreState;
extern "C" {
int circle_get_machine_timing() {
return static_kernel->circle_get_machine_timing();
}
void circle_sleep(long delay) {
// Timer guaranteed to be ready before vice can call this.
return static_kernel->circle_sleep(delay);
}
unsigned long circle_get_ticks() {
// Timer guaranteed to be ready before vice can call this.
return static_kernel->circle_get_ticks();
}
int circle_sound_bufferspace() {
// Sound init will happen before this so this is okay
return static_kernel->circle_sound_bufferspace();
}
int circle_sound_init(const char *param, int *speed, int *fragsize, int *fragnr,
int *channels) {
// VCHIQ is guaranteed to have been constructed but not necessarily
// initialized so we defer its initialization until this method is
// called by vice.
return static_kernel->circle_sound_init(param, speed, fragsize, fragnr,
channels);
}
int circle_sound_write(int16_t *pbuf, size_t nr) {
// Sound init will happen before this so this is okay
return static_kernel->circle_sound_write(pbuf, nr);
}
void circle_sound_close(void) {
// Sound init will happen before this so this is okay
static_kernel->circle_sound_close();
}
int circle_sound_suspend(void) {
// Sound init will happen before this so this is okay
return static_kernel->circle_sound_suspend();
}
int circle_sound_resume(void) {
// Sound init will happen before this so this is okay
return static_kernel->circle_sound_resume();
}
void circle_yield(void) {
// Scheduler guaranteed to be ready before vice calls this.
static_kernel->circle_yield();
}
void circle_check_gpio() {
// GPIO pins guaranteed to be setup before vice calls this.
static_kernel->circle_check_gpio();
}
void circle_reset_gpio(int gpio_config) {
// Ensure GPIO pins are in correct configuration for current mode.
static_kernel->circle_reset_gpio(gpio_config);
}
void circle_lock_acquire() {
// Always ok
static_kernel->circle_lock_acquire();
}
void circle_lock_release() {
// Always ok
static_kernel->circle_lock_release();
}
void circle_boot_complete() {
// Always ok
static_kernel->circle_boot_complete();
}
int circle_cycles_per_sec() {
// Always ok
return static_kernel->circle_cycles_per_second();
}
int circle_alloc_fbl(int layer, int pixelmode, uint8_t **pixels,
int width, int height, int *pitch) {
return static_kernel->circle_alloc_fbl(layer, pixelmode, pixels, width, height, pitch);
}
void circle_free_fbl(int layer) {
static_kernel->circle_free_fbl(layer);
}
void circle_clear_fbl(int layer) {
static_kernel->circle_clear_fbl(layer);
}
void circle_show_fbl(int layer) {
static_kernel->circle_show_fbl(layer);
}
void circle_hide_fbl(int layer) {
static_kernel->circle_hide_fbl(layer);
}
void circle_frames_ready_fbl(int layer1, int layer2, int sync) {
static_kernel->circle_frames_ready_fbl(layer1, layer2, sync);
}
void circle_set_palette_fbl(int layer, uint8_t index, uint16_t rgb565) {
static_kernel->circle_set_palette_fbl(layer, index, rgb565);
}
void circle_set_palette32_fbl(int layer, uint8_t index, uint32_t argb) {
static_kernel->circle_set_palette32_fbl(layer, index, argb);
}
void circle_update_palette_fbl(int layer) {
static_kernel->circle_update_palette_fbl(layer);
}
void circle_set_aspect_fbl(int layer, double aspect) {
static_kernel->circle_set_aspect_fbl(layer, aspect);
}
void circle_set_center_offset(int layer, int cx, int cy) {
static_kernel->circle_set_center_offset(layer, cx, cy);
}
void circle_set_src_rect_fbl(int layer, int x, int y, int w, int h) {
static_kernel->circle_set_src_rect_fbl(layer, x,y,w,h);
}
void circle_set_valign_fbl(int layer, int align, int padding) {
static_kernel->circle_set_valign_fbl(layer, align, padding);
}
void circle_set_halign_fbl(int layer, int align, int padding) {
static_kernel->circle_set_halign_fbl(layer, align, padding);
}
void circle_set_padding_fbl(int layer, double lpad, double rpad, double tpad, double bpad) {
static_kernel->circle_set_padding_fbl(layer, lpad, rpad, tpad, bpad);
}
void circle_set_zlayer_fbl(int layer, int zlayer) {
static_kernel->circle_set_zlayer_fbl(layer, zlayer);
}
int circle_get_zlayer_fbl(int layer) {
return static_kernel->circle_get_zlayer_fbl(layer);
}
void circle_find_usb(int (*usb)[3]) {
return static_kernel->circle_find_usb(usb);
}
int circle_mount_usb(int usb) {
return static_kernel->circle_mount_usb(usb);
}
int circle_unmount_usb(int usb) {
return static_kernel->circle_unmount_usb(usb);
}
void circle_set_volume(int value) {
static_kernel->circle_set_volume(value);
}
int circle_get_model() {
return static_kernel->circle_get_model();
}
int circle_gpio_enabled() {
return static_kernel->circle_gpio_enabled();
}
int circle_gpio_outputs_enabled() {
return static_kernel->circle_gpio_outputs_enabled();
}
};
namespace {
long func_to_keycode(int btn_func) {
switch (btn_func) {
case BTN_ASSIGN_UP:
return KEYCODE_Up;
case BTN_ASSIGN_DOWN:
return KEYCODE_Down;
case BTN_ASSIGN_LEFT:
return KEYCODE_Left;
case BTN_ASSIGN_RIGHT:
return KEYCODE_Right;
case BTN_ASSIGN_FIRE:
return KEYCODE_Return;
default:
return 0;
}
}
}
CKernel::CKernel(void)
: ViceStdioApp("vice"), mViceSound(nullptr),
mNumJoy(emu_get_num_joysticks()),
mInitialVolume(100) {
static_kernel = this;
mod_states = 0;
memset(key_states, 0, MAX_KEY_CODES * sizeof(bool));
// Only used for pins that are used as buttons. See viceapp.h.
for (int i = 0; i < NUM_GPIO_PINS; i++) {
gpio_debounce_state[i] = BTN_UP;
gpio_prev_state[i] = HIGH;
}
kbdRestoreState = HIGH;
for (int i = 0; i < 8; i++) {
for (int j = 0; j < 8; j++) {
kbdMatrixStates[i][j] = HIGH;
}
}
fbl[FB_LAYER_VIC].SetLayer(0);
fbl[FB_LAYER_VIC].SetTransparency(false);
fbl[FB_LAYER_VDC].SetLayer(1);
fbl[FB_LAYER_VDC].SetTransparency(false);
fbl[FB_LAYER_STATUS].SetLayer(2);
fbl[FB_LAYER_STATUS].SetTransparency(true);
fbl[FB_LAYER_UI].SetLayer(3);
fbl[FB_LAYER_UI].SetTransparency(true);
}
bool CKernel::Initialize(void) {
if (!ViceStdioApp::Initialize()) {
return false;
}
return true;
}
static void exec_button_func(int button_func, int is_press, int is_ui) {
// KEEP THIS IN SYNC WITH kbd.c
switch (button_func) {
case BTN_ASSIGN_MENU:
if (is_press) {
emu_key_pressed(KEYCODE_F12);
} else {
emu_key_released(KEYCODE_F12);
}
break;
case BTN_ASSIGN_WARP:
case BTN_ASSIGN_SWAP_PORTS:
case BTN_ASSIGN_STATUS_TOGGLE:
case BTN_ASSIGN_TAPE_MENU:
case BTN_ASSIGN_CART_MENU:
case BTN_ASSIGN_CART_FREEZE:
case BTN_ASSIGN_RESET_HARD:
case BTN_ASSIGN_RESET_SOFT:
case BTN_ASSIGN_ACTIVE_DISPLAY:
case BTN_ASSIGN_PIP_LOCATION:
case BTN_ASSIGN_PIP_SWAP:
case BTN_ASSIGN_40_80_COLUMN:
case BTN_ASSIGN_VKBD_TOGGLE:
if (is_press) {
emu_quick_func_interrupt(button_func);
}
break;
case BTN_ASSIGN_CUSTOM_KEY_1:
case BTN_ASSIGN_CUSTOM_KEY_2:
case BTN_ASSIGN_CUSTOM_KEY_3:
case BTN_ASSIGN_CUSTOM_KEY_4:
case BTN_ASSIGN_CUSTOM_KEY_5:
case BTN_ASSIGN_CUSTOM_KEY_6:
if (is_press) {
emu_key_pressed(
emu_get_key_binding(button_func - BTN_ASSIGN_CUSTOM_KEY_1));
} else {
emu_key_released(
emu_get_key_binding(button_func - BTN_ASSIGN_CUSTOM_KEY_1));
}
break;
case BTN_ASSIGN_RUN_STOP_BACK:
if (is_ui) {
emu_ui_key_interrupt(KEYCODE_Escape, is_press);
} else {
if (is_press) {
emu_key_pressed(KEYCODE_Escape);
} else {
emu_key_released(KEYCODE_Escape);
}
}
break;
// Only do direction/fire button assignments for UI, joy is handled
// in circle_add_usb_values seperately.
case BTN_ASSIGN_UP:
case BTN_ASSIGN_DOWN:
case BTN_ASSIGN_LEFT:
case BTN_ASSIGN_RIGHT:
case BTN_ASSIGN_FIRE:
if (is_ui) {
emu_ui_key_interrupt(func_to_keycode(button_func), is_press);
}
break;
default:
break;
}
}
// KEEP THIS IN SYNC WITH kbd.c
static void handle_button_function(bool is_ui, int device, unsigned buttons) {
int button_num = 0;
int button_func;
int is_press;
while (emu_button_function(device, button_num, buttons,
&button_func, &is_press) >= 0) {
exec_button_func(button_func, is_press, is_ui);
button_num++;
}
}
#if 0 // COUNT INVOCATIONS PER SECOND
static unsigned long entry_delay = 5 * TICKS_PER_SECOND;
static unsigned long entry_start = 0;
static long invoked;
#endif
// Interrupt handler. Make this quick.
void CKernel::GamePadStatusHandler(unsigned nDeviceIndex,
const TGamePadState *pState) {
#if 0 // COUNT INVOCATIONS PER SECOND
invoked++;
if (static_kernel->circle_get_ticks() - entry_start >= entry_delay) {
printf ("%ld\n", invoked / 5);
invoked = 0;
entry_start = static_kernel->circle_get_ticks();
}
#endif
static int dpad_to_joy[8] = {0x01, 0x09, 0x08, 0x0a, 0x02, 0x06, 0x04, 0x05};
static unsigned int prev_buttons[MAX_USB_DEVICES] = {0, 0, 0, 0};
static int prev_dpad[MAX_USB_DEVICES] = {8, 8, 8, 8};
static int prev_axes_dirs[MAX_USB_DEVICES][4] = {{0, 0, 0, 0}, {0, 0, 0, 0}, {0, 0, 0, 0}, {0, 0, 0, 0}};
if (nDeviceIndex >= MAX_USB_DEVICES)
return;
if (emu_wants_raw_usb()) {
// Send the raw usb data and we're done.
int axes[16];
for (int i = 0; i < pState->naxes; i++) {
axes[i] = pState->axes[i].value;
}
emu_set_raw_usb(nDeviceIndex, pState->buttons, pState->hats, axes);
return;
}
int ui_activated = emu_is_ui_activated();
unsigned b = pState->buttons;
// usb_pref is the value of the usb pref menu item
int usb_pref;
int axis_x;
int axis_y;
float thresh_x;
float thresh_y;
emu_get_usb_pref(nDeviceIndex, &usb_pref, &axis_x, &axis_y, &thresh_x,
&thresh_y);
int max_index = axis_x;
if (axis_y > max_index)
max_index = axis_y;
if (usb_pref == USB_PREF_HAT && pState->nhats > 0) {
int dpad = pState->hats[0];
bool has_changed =
(prev_buttons[nDeviceIndex] != b) || (prev_dpad[nDeviceIndex] != dpad);
if (has_changed) {
int old_dpad = prev_dpad[nDeviceIndex];
prev_buttons[nDeviceIndex] = b;
prev_dpad[nDeviceIndex] = dpad;
// If the UI is activated, route to the menu.
if (ui_activated) {
if (dpad == 0 && old_dpad != 0) {
emu_ui_key_interrupt(KEYCODE_Up, 1);
} else if (dpad != 0 && old_dpad == 0) {
emu_ui_key_interrupt(KEYCODE_Up, 0);
}
if (dpad == 4 && old_dpad != 4) {
emu_ui_key_interrupt(KEYCODE_Down, 1);
} else if (dpad != 4 && old_dpad == 4) {
emu_ui_key_interrupt(KEYCODE_Down, 0);
}
if (dpad == 6 && old_dpad != 6) {
emu_ui_key_interrupt(KEYCODE_Left, 1);
} else if (dpad != 6 && old_dpad == 6) {
emu_ui_key_interrupt(KEYCODE_Left, 0);
}
if (dpad == 2 && old_dpad != 2) {
emu_ui_key_interrupt(KEYCODE_Right, 1);
} else if (dpad != 2 && old_dpad == 2) {
emu_ui_key_interrupt(KEYCODE_Right, 0);
}
handle_button_function(true, nDeviceIndex, b);
return;
}
handle_button_function(false, nDeviceIndex, b);
int value = 0;
if (dpad < 8)
value |= dpad_to_joy[dpad];
value |= emu_add_button_values(nDeviceIndex, b);
emu_set_joy_usb_interrupt(nDeviceIndex, value);
}
} else if (usb_pref == USB_PREF_ANALOG && pState->naxes > max_index) {
// TODO: Do this just once at init
int minx = pState->axes[axis_x].minimum;
int maxx = pState->axes[axis_x].maximum;
int miny = pState->axes[axis_y].minimum;
int maxy = pState->axes[axis_y].maximum;
int tx = (maxx - minx) / 2 * thresh_x;
int mx = (maxx + minx) / 2;
int ty = (maxy - miny) / 2 * thresh_y;
int my = (maxy + miny) / 2;
int a_left = pState->axes[axis_x].value < mx - tx;
int a_right = pState->axes[axis_x].value > mx + tx;
int a_up = pState->axes[axis_y].value < my - ty;
int a_down = pState->axes[axis_y].value > my + ty;
bool has_changed = (prev_buttons[nDeviceIndex] != b) ||
(prev_axes_dirs[nDeviceIndex][0] != a_up) ||
(prev_axes_dirs[nDeviceIndex][1] != a_down) ||
(prev_axes_dirs[nDeviceIndex][2] != a_left) ||
(prev_axes_dirs[nDeviceIndex][3] != a_right);
if (has_changed) {
int prev_a_up = prev_axes_dirs[nDeviceIndex][0];
int prev_a_down = prev_axes_dirs[nDeviceIndex][1];
int prev_a_left = prev_axes_dirs[nDeviceIndex][2];
int prev_a_right = prev_axes_dirs[nDeviceIndex][3];
prev_axes_dirs[nDeviceIndex][0] = a_up;
prev_axes_dirs[nDeviceIndex][1] = a_down;
prev_axes_dirs[nDeviceIndex][2] = a_left;
prev_axes_dirs[nDeviceIndex][3] = a_right;
prev_buttons[nDeviceIndex] = b;
// If the UI is activated, route to the menu.
if (ui_activated) {
if (a_up && !prev_a_up) {
emu_ui_key_interrupt(KEYCODE_Up, 1);
} else if (!a_up && prev_a_up) {
emu_ui_key_interrupt(KEYCODE_Up, 0);
}
if (a_down && !prev_a_down) {
emu_ui_key_interrupt(KEYCODE_Down, 1);
} else if (!a_down && prev_a_down) {
emu_ui_key_interrupt(KEYCODE_Down, 0);
}
if (a_left && !prev_a_left) {
emu_ui_key_interrupt(KEYCODE_Left, 1);
} else if (!a_left && prev_a_left) {
emu_ui_key_interrupt(KEYCODE_Left, 0);
}
if (a_right && !prev_a_right) {
emu_ui_key_interrupt(KEYCODE_Right, 1);
} else if (!a_right && prev_a_right) {
emu_ui_key_interrupt(KEYCODE_Right, 0);
}
handle_button_function(true, nDeviceIndex, b);
return;
}
handle_button_function(false, nDeviceIndex, b);
int value = 0;
if (a_left)
value |= 0x4;
if (a_right)
value |= 0x8;
if (a_up)
value |= 0x1;
if (a_down)
value |= 0x2;
value |= emu_add_button_values(nDeviceIndex, b);
emu_set_joy_usb_interrupt(nDeviceIndex, value);
}
}
}
void CKernel::SetupUSBKeyboard() {
CUSBKeyboardDevice *pKeyboard =
(CUSBKeyboardDevice *)mDeviceNameService.GetDevice("ukbd1", FALSE);
if (pKeyboard) {
pKeyboard->RegisterKeyStatusHandlerRaw(KeyStatusHandlerRaw);
}
}
void CKernel::SetupUSBMouse() {
CMouseDevice *pMouse =
(CMouseDevice *)mDeviceNameService.GetDevice("mouse1", FALSE);
if (pMouse) {
pMouse->RegisterStatusHandler(MouseStatusHandler);
}
}
void CKernel::SetupUSBGamepads() {
unsigned num_pads = 0;
int num_buttons[MAX_USB_DEVICES] = {0, 0, 0, 0};
int num_axes[MAX_USB_DEVICES] = {0, 0, 0, 0};
int num_hats[MAX_USB_DEVICES] = {0, 0, 0, 0};
while (num_pads < MAX_USB_DEVICES) {
CString DeviceName;
DeviceName.Format("upad%u", num_pads + 1);
CUSBGamePadDevice *game_pad =
(CUSBGamePadDevice *)mDeviceNameService.GetDevice(DeviceName, FALSE);
if (game_pad == 0) {
break;
}
const TGamePadState *pState = game_pad->GetInitialState();
assert(pState != 0);
num_axes[num_pads] = pState->naxes;
num_hats[num_pads] = pState->nhats;
num_buttons[num_pads] = pState->nbuttons;
game_pad->RegisterStatusHandler(GamePadStatusHandler);
num_pads++;
}
// Tell the emulator what we found
emu_set_gamepad_info(num_pads, num_buttons, num_axes, num_hats);
}
ViceApp::TShutdownMode CKernel::Run(void) {
SetupUSBKeyboard();
SetupUSBMouse();
SetupUSBGamepads();
emu_set_demo_mode(mViceOptions.DemoEnabled());
#ifndef ARM_ALLOW_MULTI_CORE
mEmulatorCore->LaunchEmulator(mTimingOption);
#else
// This core will do nothing but service interrupts from
// usb or gpio.
printf("Core 0 idle\n");
asm("dsb\n\t"
"1: wfi\n\t"
"b 1b\n\t");
#endif
return ShutdownHalt;
}
void CKernel::ScanKeyboard() {
int ui_activated = emu_is_ui_activated();
// For restore, there is no public API that triggers it so we will
// pass the keycode that will.
int restore = gpioPins[GPIO_KBD_RESTORE_INDEX]->Read();
#if defined(RASPI_PLUS4) | defined(RASPI_PLUS4EMU)
if (restore == LOW && kbdRestoreState == HIGH) {
emu_key_pressed(KEYCODE_Home);
} else if (restore == HIGH && kbdRestoreState == LOW) {
emu_key_released(KEYCODE_Home);
}
#else
if (restore == LOW && kbdRestoreState == HIGH) {
emu_key_pressed(KEYCODE_PageUp);
} else if (restore == HIGH && kbdRestoreState == LOW) {
emu_key_released(KEYCODE_PageUp);
}
#endif
kbdRestoreState = restore;
// Keyboard scan
for (int kbdPA = 0; kbdPA < 8; kbdPA++) {
gpioPins[kbdPA]->SetMode(GPIOModeOutput);
gpioPins[kbdPA]->Write(LOW);
circle_sleep(10);
for (int kbdPB = 0; kbdPB < 8; kbdPB++) {
// Read PB line
int val = gpioPins[kbdPB + 8]->Read();
// My PA/PB to keycode matrix is transposed and I'm too lazy to fix
// it. Just swap PB and PA here for the keycode lookup.
long keycode = kbdMatrixKeyCodes[kbdPB][kbdPA];
if (ui_activated) {
if (val == LOW && kbdMatrixStates[kbdPA][kbdPB] == HIGH) {
if (keycode == KEYCODE_LeftShift) {
uiLeftShift = true;
} else if (keycode == KEYCODE_RightShift) {
uiRightShift = true;
}
if (keycode == KEYCODE_Right && (uiLeftShift || uiRightShift)) {
emu_key_pressed(KEYCODE_Left);
} else if (keycode == KEYCODE_Down && (uiLeftShift || uiRightShift)) {
emu_key_pressed(KEYCODE_Up);
} else {
emu_key_pressed(keycode);
}
} else if (val == HIGH && kbdMatrixStates[kbdPA][kbdPB] == LOW) {
if (keycode == KEYCODE_LeftShift) {
uiLeftShift = false;
} else if (keycode == KEYCODE_RightShift) {
uiRightShift = false;
}
if (keycode == KEYCODE_Right && (uiLeftShift || uiRightShift)) {
emu_key_released(KEYCODE_Left);
} else if (keycode == KEYCODE_Down && (uiLeftShift || uiRightShift)) {
emu_key_released(KEYCODE_Up);
} else {
emu_key_released(keycode);
}
}
} else {
// TODO: Need to watch out for key combos here. Hook into
// the handle functions directly in kbd.c so we can invoke the
// same hotkey funcs.
if (val == LOW && kbdMatrixStates[kbdPA][kbdPB] == HIGH) {
emu_key_pressed(keycode);
} else if (val == HIGH && kbdMatrixStates[kbdPA][kbdPB] == LOW) {
emu_key_released(keycode);
}
}
kbdMatrixStates[kbdPA][kbdPB] = val;
}
gpioPins[kbdPA]->SetMode(GPIOModeInputPullUp);
}
}
// Read joystick state.
// If gpioConfig is 0, the NavButtons+Joys config is used where pins can
// be grounded.
// If gpioConfig is 1, the Keyboard+Joys PCB config is used (where
// selector is used to drive pins low instead of GND).
// If gpioConfig is 2, the Waveshare HAT layout is used.
void CKernel::ReadJoystick(int device, int gpioConfig) {
// For remembering button states for UI only
static int js_prev_0[5] = {HIGH, HIGH, HIGH, HIGH, HIGH};
static int js_prev_1[5] = {HIGH, HIGH, HIGH, HIGH, HIGH};
int *js_prev;
CGPIOPin **js_pins = NULL;
CGPIOPin *js_selector = NULL;
int port = 0;
int devd = 0;
int ui_activated = emu_is_ui_activated();
// If ui is activated, don't bail if port assignment can't be done
// since the event will always go to the ui. We want the joystick to
// function in the ui even if the control port is not assigned to be
// gpio.
if (device == 0) {
if (joydevs[0].device == JOYDEV_GPIO_0) {
port = joydevs[0].port;
devd = JOYDEV_GPIO_0;
} else if (joydevs[1].device == JOYDEV_GPIO_0) {
port = joydevs[1].port;
devd = JOYDEV_GPIO_0;
} else if (!ui_activated) {
return;
}
js_prev = js_prev_0;
switch (gpioConfig) {
case GPIO_CONFIG_NAV_JOY:
js_pins = config_0_joystickPins1;
break;
case GPIO_CONFIG_KYB_JOY:
js_selector = gpioPins[GPIO_JS1_SELECT_INDEX];
js_pins = config_1_joystickPins1;
break;
case GPIO_CONFIG_WAVESHARE:
js_pins = config_2_joystickPins;
break;
case GPIO_CONFIG_USERPORT:
js_pins = config_3_joystickPins1;
break;
default:
assert(false);
}
} else {
if (joydevs[0].device == JOYDEV_GPIO_1) {
port = joydevs[0].port;
devd = JOYDEV_GPIO_1;
} else if (joydevs[1].device == JOYDEV_GPIO_1) {
port = joydevs[1].port;
devd = JOYDEV_GPIO_1;
} else if (!ui_activated) {
return;
}
js_prev = js_prev_1;
switch (gpioConfig) {
case GPIO_CONFIG_NAV_JOY:
js_pins = config_0_joystickPins2;
break;
case GPIO_CONFIG_KYB_JOY:
js_selector = gpioPins[GPIO_JS2_SELECT_INDEX];
js_pins = config_1_joystickPins2;
break;
case GPIO_CONFIG_USERPORT:
js_pins = config_3_joystickPins2;
break;
default:
assert(false);
}
}
if (gpioConfig == 1) {
// Drive the select pin low. Don't leave this routine
// before setting it as input-pullup again.
js_selector->SetMode(GPIOModeOutput);
js_selector->Write(LOW);
circle_sleep(10);
}
int js_up = js_pins[JOY_UP]->Read();
int js_down = js_pins[JOY_DOWN]->Read();
int js_left = js_pins[JOY_LEFT]->Read();
int js_right = js_pins[JOY_RIGHT]->Read();
int js_fire = js_pins[JOY_FIRE]->Read();
int js_potx = gpioConfig == 2 ? js_pins[JOY_POTX]->Read() : HIGH;
int js_poty = gpioConfig == 2 ? js_pins[JOY_POTY]->Read() : HIGH;
if (ui_activated) {
if (js_up == LOW && js_prev[JOY_UP] != LOW) {
emu_ui_key_interrupt(KEYCODE_Up, 1);
} else if (js_up != LOW && js_prev[JOY_UP] == LOW) {
emu_ui_key_interrupt(KEYCODE_Up, 0);
}
if (js_down == LOW && js_prev[JOY_DOWN] != LOW) {
emu_ui_key_interrupt(KEYCODE_Down, 1);
} else if (js_down != LOW && js_prev[JOY_DOWN] == LOW) {
emu_ui_key_interrupt(KEYCODE_Down, 0);
}
if (js_left == LOW && js_prev[JOY_LEFT] != LOW) {
emu_ui_key_interrupt(KEYCODE_Left, 1);
} else if (js_left != LOW && js_prev[JOY_LEFT] == LOW) {
emu_ui_key_interrupt(KEYCODE_Left, 0);
}
if (js_right == LOW && js_prev[JOY_RIGHT] != LOW) {
emu_ui_key_interrupt(KEYCODE_Right, 1);
} else if (js_right != LOW && js_prev[JOY_RIGHT] == LOW) {
emu_ui_key_interrupt(KEYCODE_Right, 0);
}
if (js_fire == LOW && js_prev[JOY_FIRE] != LOW) {
emu_ui_key_interrupt(KEYCODE_Return, 1);
} else if (js_fire != LOW && js_prev[JOY_FIRE] == LOW) {
emu_ui_key_interrupt(KEYCODE_Return, 0);
}
js_prev[JOY_UP] = js_up;
js_prev[JOY_DOWN] = js_down;
js_prev[JOY_LEFT] = js_left;
js_prev[JOY_RIGHT] = js_right;
js_prev[JOY_FIRE] = js_fire;
// not necessary to remember pot values as they are not used for ui
} else {
emu_joy_interrupt_abs(port, devd,
js_up == LOW,
js_down == LOW,
js_left == LOW,
js_right == LOW,
js_fire == LOW,
js_potx == LOW,
js_poty == LOW);
}
if (gpioConfig == 1) {
js_selector->SetMode(GPIOModeInputPullUp);
}
}
void CKernel::ReadCustomGPIO() {
int i;
unsigned int bank;
unsigned int func;
int value;
int js_up_1 = HIGH;
int js_down_1 = HIGH;
int js_left_1 = HIGH;
int js_right_1 = HIGH;
int js_fire_1 = HIGH;
int js_potx_1 = HIGH;
int js_poty_1 = HIGH;
int js_up_2 = HIGH;
int js_down_2 = HIGH;
int js_left_2 = HIGH;
int js_right_2 = HIGH;
int js_fire_2 = HIGH;
int js_potx_2 = HIGH;
int js_poty_2 = HIGH;
int ui_activated = emu_is_ui_activated();
for (i = 0 ; i < NUM_GPIO_PINS; i++) {
bank = gpio_bindings[i] >> 8;
func = gpio_bindings[i] & 0xFF;
if (bank > 0) {
// This is for a joystick bank
value = gpioPins[i]->Read();
if (ui_activated) {
if (value == LOW && gpio_prev_state[i] != LOW) {
emu_ui_key_interrupt(func_to_keycode(func), 1);
} else if (value != LOW && gpio_prev_state[i] == LOW) {
emu_ui_key_interrupt(func_to_keycode(func), 0);
}
gpio_prev_state[i] = value;
} else {
int dev_match = bank == 1 ? JOYDEV_GPIO_0 : JOYDEV_GPIO_1;
int port;
if (joydevs[0].device == dev_match) {
port = joydevs[0].port;
} else if (joydevs[1].device == dev_match) {
port = joydevs[1].port;
} else {
continue;
}
switch (func) {
case BTN_ASSIGN_UP:
if (port == 1) {
js_up_1 = value;
} else {
js_up_2 = value;
}
break;
case BTN_ASSIGN_DOWN:
if (port == 1) {
js_down_1 = value;
} else {
js_down_2 = value;
}
break;
case BTN_ASSIGN_LEFT:
if (port == 1) {
js_left_1 = value;
} else {
js_left_2 = value;
}
break;
case BTN_ASSIGN_RIGHT:
if (port == 1) {
js_right_1 = value;
} else {
js_right_2 = value;
}
break;
case BTN_ASSIGN_FIRE:
if (port == 1) {
js_fire_1 = value;
} else {
js_fire_2 = value;
}
break;
case BTN_ASSIGN_POTX:
if (port == 1) {
js_potx_1 = value;
} else {
js_potx_2 = value;
}
break;
case BTN_ASSIGN_POTY:
if (port == 1) {
js_poty_1 = value;
} else {
js_poty_2 = value;
}
break;
}
}
} else {
int debounced = ReadDebounced(i);
if (debounced == BTN_PRESS) {
exec_button_func(func, 1, ui_activated);
} else if (debounced == BTN_RELEASE) {
exec_button_func(func, 0, ui_activated);
}
}
}
// The device here doesn't really matter.
emu_joy_interrupt_abs(1, JOYDEV_GPIO_0,
js_up_1 == LOW,
js_down_1 == LOW,
js_left_1 == LOW,
js_right_1 == LOW,
js_fire_1 == LOW,
js_potx_1 == LOW,
js_poty_1 == LOW);
// The device here doesn't really matter.
emu_joy_interrupt_abs(2, JOYDEV_GPIO_1,
js_up_2 == LOW,
js_down_2 == LOW,
js_left_2 == LOW,
js_right_2 == LOW,
js_fire_2 == LOW,
js_potx_2 == LOW,
js_poty_2 == LOW);
}
// Configure user port DDR
void CKernel::SetupUserport() {
// Unless enable_gpio_outputs is true, this will have no effect. Menu item
// should reflect this.
if (circle_gpio_outputs_enabled()) {
uint8_t ddr = circle_get_userport_ddr();