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Diffstat (limited to 'quantum/via.c')
| -rw-r--r-- | quantum/via.c | 400 |
1 files changed, 400 insertions, 0 deletions
diff --git a/quantum/via.c b/quantum/via.c new file mode 100644 index 000000000..64b05324a --- /dev/null +++ b/quantum/via.c @@ -0,0 +1,400 @@ +/* Copyright 2019 Jason Williams (Wilba) + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#ifndef RAW_ENABLE +# error "RAW_ENABLE is not enabled" +#endif + +#ifndef DYNAMIC_KEYMAP_ENABLE +# error "DYNAMIC_KEYMAP_ENABLE is not enabled" +#endif + +#include "quantum.h" + +#include "via.h" +#include "raw_hid.h" +#include "dynamic_keymap.h" +#include "tmk_core/common/eeprom.h" +#include "version.h" // for QMK_BUILDDATE used in EEPROM magic + +// Can be called in an overriding via_init_kb() to test if keyboard level code usage of +// EEPROM is invalid and use/save defaults. +bool via_eeprom_is_valid(void) +{ + char *p = QMK_BUILDDATE; // e.g. "2019-11-05-11:29:54" + uint8_t magic0 = ( ( p[2] & 0x0F ) << 4 ) | ( p[3] & 0x0F ); + uint8_t magic1 = ( ( p[5] & 0x0F ) << 4 ) | ( p[6] & 0x0F ); + uint8_t magic2 = ( ( p[8] & 0x0F ) << 4 ) | ( p[9] & 0x0F ); + + return (eeprom_read_byte( (void*)VIA_EEPROM_MAGIC_ADDR+0 ) == magic0 && + eeprom_read_byte( (void*)VIA_EEPROM_MAGIC_ADDR+1 ) == magic1 && + eeprom_read_byte( (void*)VIA_EEPROM_MAGIC_ADDR+2 ) == magic2 ); +} + +// Sets VIA/keyboard level usage of EEPROM to valid/invalid +// Keyboard level code (eg. via_init_kb()) should not call this +void via_eeprom_set_valid(bool valid) +{ + char *p = QMK_BUILDDATE; // e.g. "2019-11-05-11:29:54" + uint8_t magic0 = ( ( p[2] & 0x0F ) << 4 ) | ( p[3] & 0x0F ); + uint8_t magic1 = ( ( p[5] & 0x0F ) << 4 ) | ( p[6] & 0x0F ); + uint8_t magic2 = ( ( p[8] & 0x0F ) << 4 ) | ( p[9] & 0x0F ); + + eeprom_update_byte( (void*)VIA_EEPROM_MAGIC_ADDR+0, valid ? magic0 : 0xFF); + eeprom_update_byte( (void*)VIA_EEPROM_MAGIC_ADDR+1, valid ? magic1 : 0xFF); + eeprom_update_byte( (void*)VIA_EEPROM_MAGIC_ADDR+2, valid ? magic2 : 0xFF); +} + +// Flag QMK and VIA/keyboard level EEPROM as invalid. +// Used in bootmagic_lite() and VIA command handler. +// Keyboard level code should not need to call this. +void via_eeprom_reset(void) +{ + // Set the VIA specific EEPROM state as invalid. + via_eeprom_set_valid(false); + // Set the TMK/QMK EEPROM state as invalid. + eeconfig_disable(); +} + +// Override bootmagic_lite() so it can flag EEPROM as invalid +// as well as jump to bootloader, thus performing a "factory reset" +// of dynamic keymaps and optionally backlight/other settings. +void bootmagic_lite(void) +{ + // The lite version of TMK's bootmagic based on Wilba. + // 100% less potential for accidentally making the + // keyboard do stupid things. + + // We need multiple scans because debouncing can't be turned off. + matrix_scan(); +#if defined(DEBOUNCE) && DEBOUNCE > 0 + wait_ms(DEBOUNCE * 2); +#else + wait_ms(30); +#endif + matrix_scan(); + + // If the Esc and space bar are held down on power up, + // reset the EEPROM valid state and jump to bootloader. + // Assumes Esc is at [0,0]. + // This isn't very generalized, but we need something that doesn't + // rely on user's keymaps in firmware or EEPROM. + if (matrix_get_row(BOOTMAGIC_LITE_ROW) & (1 << BOOTMAGIC_LITE_COLUMN)) { + // This is the only difference from the default implementation. + via_eeprom_reset(); + // Jump to bootloader. + bootloader_jump(); + } +} + +// Override this at the keyboard code level to check +// VIA's EEPROM valid state and reset to defaults as needed. +// Used by keyboards that store their own state in EEPROM, +// for backlight, rotary encoders, etc. +// The override should not set via_eeprom_set_valid(true) as +// the caller also needs to check the valid state. +__attribute__((weak)) void via_init_kb(void) { +} + +// Called by QMK core to initialize dynamic keymaps etc. +void via_init(void) +{ + // Let keyboard level test EEPROM valid state, + // but not set it valid, it is done here. + via_init_kb(); + + // If the EEPROM has the magic, the data is good. + // OK to load from EEPROM. + if (via_eeprom_is_valid()) { + } else { + // This resets the layout options + via_set_layout_options(0); + // This resets the keymaps in EEPROM to what is in flash. + dynamic_keymap_reset(); + // This resets the macros in EEPROM to nothing. + dynamic_keymap_macro_reset(); + // Save the magic number last, in case saving was interrupted + via_eeprom_set_valid(true); + } +} + +// This is generalized so the layout options EEPROM usage can be +// variable, between 1 and 4 bytes. +uint32_t via_get_layout_options(void) +{ + uint32_t value = 0; + // Start at the most significant byte + void * source = (void *)(VIA_EEPROM_LAYOUT_OPTIONS_ADDR); + for ( uint8_t i = 0; i < VIA_EEPROM_LAYOUT_OPTIONS_SIZE; i++ ) { + value = value << 8; + value |= eeprom_read_byte(source); + source++; + } + return value; +} + +void via_set_layout_options(uint32_t value) +{ + // Start at the least significant byte + void * target = (void *)(VIA_EEPROM_LAYOUT_OPTIONS_ADDR+VIA_EEPROM_LAYOUT_OPTIONS_SIZE-1); + for ( uint8_t i = 0; i < VIA_EEPROM_LAYOUT_OPTIONS_SIZE; i++ ) { + eeprom_update_byte(target, value & 0xFF ); + value = value >> 8; + target--; + } +} + +// Called by QMK core to process VIA-specific keycodes. +bool process_record_via(uint16_t keycode, keyrecord_t *record) +{ + // Handle macros + if (record->event.pressed) { + if ( keycode >= MACRO00 && keycode <= MACRO15 ) + { + uint8_t id = keycode - MACRO00; + dynamic_keymap_macro_send(id); + return false; + } + } + + // TODO: ideally this would be generalized and refactored into + // QMK core as advanced keycodes, until then, the simple case + // can be available here to keyboards using VIA + switch(keycode) { + case FN_MO13: + if (record->event.pressed) { + layer_on(1); + update_tri_layer(1, 2, 3); + } else { + layer_off(1); + update_tri_layer(1, 2, 3); + } + return false; + break; + case FN_MO23: + if (record->event.pressed) { + layer_on(2); + update_tri_layer(1, 2, 3); + } else { + layer_off(2); + update_tri_layer(1, 2, 3); + } + return false; + break; + } + return true; +} + +// Keyboard level code can override this to handle custom messages from VIA. +// See raw_hid_receive() implementation. +// DO NOT call raw_hid_send() in the overide function. +__attribute__((weak)) void raw_hid_receive_kb(uint8_t *data, uint8_t length) { + uint8_t *command_id = &(data[0]); + *command_id = id_unhandled; +} + +// VIA handles received HID messages first, and will route to +// raw_hid_receive_kb() for command IDs that are not handled here. +// This gives the keyboard code level the ability to handle the command +// specifically. +// +// raw_hid_send() is called at the end, with the same buffer, which was +// possibly modified with returned values. +void raw_hid_receive( uint8_t *data, uint8_t length ) +{ + uint8_t *command_id = &(data[0]); + uint8_t *command_data = &(data[1]); + switch ( *command_id ) + { + case id_get_protocol_version: + { + command_data[0] = VIA_PROTOCOL_VERSION >> 8; + command_data[1] = VIA_PROTOCOL_VERSION & 0xFF; + break; + } + case id_get_keyboard_value: + { + switch ( command_data[0] ) + { + case id_uptime: + { + uint32_t value = timer_read32(); + command_data[1] = (value >> 24 ) & 0xFF; + command_data[2] = (value >> 16 ) & 0xFF; + command_data[3] = (value >> 8 ) & 0xFF; + command_data[4] = value & 0xFF; + break; + } + case id_layout_options: + { + uint32_t value = via_get_layout_options(); + command_data[1] = (value >> 24 ) & 0xFF; + command_data[2] = (value >> 16 ) & 0xFF; + command_data[3] = (value >> 8 ) & 0xFF; + command_data[4] = value & 0xFF; + break; + } + case id_switch_matrix_state: + { +#if ( (MATRIX_COLS/8+1)*MATRIX_ROWS <= 28 ) + uint8_t i = 1; + for ( uint8_t row=0; row<MATRIX_ROWS; row++ ) { + matrix_row_t value = matrix_get_row(row); +#if (MATRIX_COLS > 24) + command_data[i++] = (value >> 24 ) & 0xFF; +#endif +#if (MATRIX_COLS > 16) + command_data[i++] = (value >> 16 ) & 0xFF; +#endif +#if (MATRIX_COLS > 8) + command_data[i++] = (value >> 8 ) & 0xFF; +#endif + command_data[i++] = value & 0xFF; + } +#endif + break; + } + default: + { + raw_hid_receive_kb(data,length); + break; + } + } + break; + } + case id_set_keyboard_value: + { + switch ( command_data[0] ) + { + case id_layout_options: + { + uint32_t value = ( (uint32_t)command_data[1] << 24 ) | + ( (uint32_t)command_data[2] << 16 ) | + ( (uint32_t)command_data[3] << 8 ) | + (uint32_t)command_data[4]; + via_set_layout_options(value); + break; + } + default: + { + raw_hid_receive_kb(data,length); + break; + } + } + break; + } + case id_dynamic_keymap_get_keycode: + { + uint16_t keycode = dynamic_keymap_get_keycode( command_data[0], command_data[1], command_data[2] ); + command_data[3] = keycode >> 8; + command_data[4] = keycode & 0xFF; + break; + } + case id_dynamic_keymap_set_keycode: + { + dynamic_keymap_set_keycode( command_data[0], command_data[1], command_data[2], ( command_data[3] << 8 ) | command_data[4] ); + break; + } + case id_dynamic_keymap_reset: + { + dynamic_keymap_reset(); + break; + } + case id_backlight_config_set_value: + case id_backlight_config_get_value: + case id_backlight_config_save: + { + raw_hid_receive_kb(data, length); + break; + } + case id_dynamic_keymap_macro_get_count: + { + command_data[0] = dynamic_keymap_macro_get_count(); + break; + } + case id_dynamic_keymap_macro_get_buffer_size: + { + uint16_t size = dynamic_keymap_macro_get_buffer_size(); + command_data[0] = size >> 8; + command_data[1] = size & 0xFF; + break; + } + case id_dynamic_keymap_macro_get_buffer: + { + uint16_t offset = ( command_data[0] << 8 ) | command_data[1]; + uint16_t size = command_data[2]; // size <= 28 + dynamic_keymap_macro_get_buffer( offset, size, &command_data[3] ); + break; + } + case id_dynamic_keymap_macro_set_buffer: + { + uint16_t offset = ( command_data[0] << 8 ) | command_data[1]; + uint16_t size = command_data[2]; // size <= 28 + dynamic_keymap_macro_set_buffer( offset, size, &command_data[3] ); + break; + } + case id_dynamic_keymap_macro_reset: + { + dynamic_keymap_macro_reset(); + break; + } + case id_dynamic_keymap_get_layer_count: + { + command_data[0] = dynamic_keymap_get_layer_count(); + break; + } + case id_dynamic_keymap_get_buffer: + { + uint16_t offset = ( command_data[0] << 8 ) | command_data[1]; + uint16_t size = command_data[2]; // size <= 28 + dynamic_keymap_get_buffer( offset, size, &command_data[3] ); + break; + } + case id_dynamic_keymap_set_buffer: + { + uint16_t offset = ( command_data[0] << 8 ) | command_data[1]; + uint16_t size = command_data[2]; // size <= 28 + dynamic_keymap_set_buffer( offset, size, &command_data[3] ); + break; + } + case id_eeprom_reset: + { + via_eeprom_reset(); + break; + } + case id_bootloader_jump: + { + // Need to send data back before the jump + // Informs host that the command is handled + raw_hid_send( data, length ); + // Give host time to read it + wait_ms(100); + bootloader_jump(); + break; + } + default: + { + // The command ID is not known + // Return the unhandled state + *command_id = id_unhandled; + break; + } + } + + // Return the same buffer, optionally with values changed + // (i.e. returning state to the host, or the unhandled state). + raw_hid_send( data, length ); +} |