228 lines
7.4 KiB
C
228 lines
7.4 KiB
C
/*
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The MIT License (MIT)
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Copyright (c) 2016 Fred Sundvik
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.
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*/
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#include "report.h"
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#include "host_driver.h"
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#include "serial_link/system/serial_link.h"
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#include "hal.h"
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#include "serial_link/protocol/byte_stuffer.h"
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#include "serial_link/protocol/transport.h"
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#include "serial_link/protocol/frame_router.h"
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#include "matrix.h"
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#include <stdbool.h>
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#include "print.h"
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#include "config.h"
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static event_source_t new_data_event;
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static bool serial_link_connected;
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static bool is_master = false;
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static uint8_t keyboard_leds(void);
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static void send_keyboard(report_keyboard_t* report);
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static void send_mouse(report_mouse_t* report);
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static void send_system(uint16_t data);
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static void send_consumer(uint16_t data);
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host_driver_t serial_driver = {keyboard_leds, send_keyboard, send_mouse, send_system, send_consumer};
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// Define these in your Config.h file
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#ifndef SERIAL_LINK_BAUD
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# error "Serial link baud is not set"
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#endif
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#ifndef SERIAL_LINK_THREAD_PRIORITY
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# error "Serial link thread priority not set"
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#endif
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static SerialConfig config = {.sc_speed = SERIAL_LINK_BAUD};
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//#define DEBUG_LINK_ERRORS
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static uint32_t read_from_serial(SerialDriver* driver, uint8_t link) {
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const uint32_t buffer_size = 16;
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uint8_t buffer[buffer_size];
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uint32_t bytes_read = sdAsynchronousRead(driver, buffer, buffer_size);
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uint8_t* current = buffer;
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uint8_t* end = current + bytes_read;
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while (current < end) {
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byte_stuffer_recv_byte(link, *current);
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current++;
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}
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return bytes_read;
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}
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static void print_error(char* str, eventflags_t flags, SerialDriver* driver) {
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#ifdef DEBUG_LINK_ERRORS
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if (flags & SD_PARITY_ERROR) {
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print(str);
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print(" Parity error\n");
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}
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if (flags & SD_FRAMING_ERROR) {
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print(str);
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print(" Framing error\n");
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}
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if (flags & SD_OVERRUN_ERROR) {
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print(str);
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uint32_t size = qSpaceI(&(driver->iqueue));
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xprintf(" Overrun error, queue size %d\n", size);
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}
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if (flags & SD_NOISE_ERROR) {
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print(str);
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print(" Noise error\n");
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}
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if (flags & SD_BREAK_DETECTED) {
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print(str);
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print(" Break detected\n");
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}
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#else
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(void)str;
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(void)flags;
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(void)driver;
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#endif
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}
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bool is_serial_link_master(void) { return is_master; }
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// TODO: Optimize the stack size, this is probably way too big
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static THD_WORKING_AREA(serialThreadStack, 1024);
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static THD_FUNCTION(serialThread, arg) {
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(void)arg;
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event_listener_t new_data_listener;
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event_listener_t sd1_listener;
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event_listener_t sd2_listener;
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chEvtRegister(&new_data_event, &new_data_listener, 0);
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eventflags_t events = CHN_INPUT_AVAILABLE | SD_PARITY_ERROR | SD_FRAMING_ERROR | SD_OVERRUN_ERROR | SD_NOISE_ERROR | SD_BREAK_DETECTED;
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chEvtRegisterMaskWithFlags(chnGetEventSource(&SD1), &sd1_listener, EVENT_MASK(1), events);
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chEvtRegisterMaskWithFlags(chnGetEventSource(&SD2), &sd2_listener, EVENT_MASK(2), events);
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bool need_wait = false;
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while (true) {
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eventflags_t flags1 = 0;
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eventflags_t flags2 = 0;
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if (need_wait) {
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eventmask_t mask = chEvtWaitAnyTimeout(ALL_EVENTS, TIME_MS2I(1000));
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if (mask & EVENT_MASK(1)) {
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flags1 = chEvtGetAndClearFlags(&sd1_listener);
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print_error("DOWNLINK", flags1, &SD1);
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}
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if (mask & EVENT_MASK(2)) {
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flags2 = chEvtGetAndClearFlags(&sd2_listener);
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print_error("UPLINK", flags2, &SD2);
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}
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}
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// Always stay as master, even if the USB goes into sleep mode
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is_master |= usbGetDriverStateI(&USBD1) == USB_ACTIVE;
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router_set_master(is_master);
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need_wait = true;
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need_wait &= read_from_serial(&SD2, UP_LINK) == 0;
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need_wait &= read_from_serial(&SD1, DOWN_LINK) == 0;
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update_transport();
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}
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}
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void send_data(uint8_t link, const uint8_t* data, uint16_t size) {
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if (link == DOWN_LINK) {
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sdWrite(&SD1, data, size);
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} else {
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sdWrite(&SD2, data, size);
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}
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}
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static systime_t last_update = 0;
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typedef struct {
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matrix_row_t rows[MATRIX_ROWS];
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} matrix_object_t;
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static matrix_object_t last_matrix = {};
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SLAVE_TO_MASTER_OBJECT(keyboard_matrix, matrix_object_t);
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MASTER_TO_ALL_SLAVES_OBJECT(serial_link_connected, bool);
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static remote_object_t* remote_objects[] = {
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REMOTE_OBJECT(serial_link_connected),
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REMOTE_OBJECT(keyboard_matrix),
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};
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void init_serial_link(void) {
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serial_link_connected = false;
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init_serial_link_hal();
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add_remote_objects(remote_objects, sizeof(remote_objects) / sizeof(remote_object_t*));
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init_byte_stuffer();
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sdStart(&SD1, &config);
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sdStart(&SD2, &config);
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chEvtObjectInit(&new_data_event);
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(void)chThdCreateStatic(serialThreadStack, sizeof(serialThreadStack), SERIAL_LINK_THREAD_PRIORITY, serialThread, NULL);
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}
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void matrix_set_remote(matrix_row_t* rows, uint8_t index);
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void serial_link_update(void) {
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if (read_serial_link_connected()) {
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serial_link_connected = true;
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}
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matrix_object_t matrix;
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bool changed = false;
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for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
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matrix.rows[i] = matrix_get_row(i);
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changed |= matrix.rows[i] != last_matrix.rows[i];
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}
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systime_t current_time = chVTGetSystemTimeX();
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systime_t delta = current_time - last_update;
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if (changed || delta > TIME_US2I(5000)) {
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last_update = current_time;
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last_matrix = matrix;
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matrix_object_t* m = begin_write_keyboard_matrix();
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for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
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m->rows[i] = matrix.rows[i];
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}
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end_write_keyboard_matrix();
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*begin_write_serial_link_connected() = true;
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end_write_serial_link_connected();
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}
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matrix_object_t* m = read_keyboard_matrix(0);
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if (m) {
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matrix_set_remote(m->rows, 0);
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}
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}
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void signal_data_written(void) { chEvtBroadcast(&new_data_event); }
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bool is_serial_link_connected(void) { return serial_link_connected; }
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host_driver_t* get_serial_link_driver(void) { return &serial_driver; }
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// NOTE: The driver does nothing, because the master handles everything
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uint8_t keyboard_leds(void) { return 0; }
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void send_keyboard(report_keyboard_t* report) { (void)report; }
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void send_mouse(report_mouse_t* report) { (void)report; }
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void send_system(uint16_t data) { (void)data; }
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void send_consumer(uint16_t data) { (void)data; }
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