Merge remote-tracking branch 'upstream/master'

* upstream/master: (1239 commits)
  Update ez.c
  removes planck/rev3 temporarily
  Move hand_swap_config to ez.c, removes error for infinity
  Update Makefile
  ergodox: Update algernon's keymap to v1.9
  Added VS Code dir to .gitignore
  Support the Pegasus Hoof controller.
  [Jack & Erez] Simplifies and documents TO
  add readme
  use wait_ms instead of _delay_ms
  add messenger
  init keymap
  Add example keymap
  Adding whiskey_tango_foxtrot_capslock ergodox keymap
  Unicode map framework. Allow unicode up to 0xFFFFF using separate mapping table
  CIE 1931 dim curve
  Apply the dim curve to the RGB output
  Update the Cluecard readme files
  Tune snake and knight intervals for Cluecard
  Tunable RGB light intervals
  ...

1 files changed, 265 insertions, 0 deletions

diff --git a/quantum/serial_link/system/serial_link.c b/quantum/serial_link/system/serial_link.c
new file mode 100644
index 0000000000..75c7e77a76
--- /dev/null
+++ b/quantum/serial_link/system/serial_link.c
@@ -0,0 +1,265 @@
+/*
+The MIT License (MIT)
+
+Copyright (c) 2016 Fred Sundvik
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+*/
+#include "report.h"
+#include "host_driver.h"
+#include "serial_link/system/serial_link.h"
+#include "hal.h"
+#include "serial_link/protocol/byte_stuffer.h"
+#include "serial_link/protocol/transport.h"
+#include "serial_link/protocol/frame_router.h"
+#include "matrix.h"
+#include <stdbool.h>
+#include "print.h"
+#include "config.h"
+
+static event_source_t new_data_event;
+static bool serial_link_connected;
+static bool is_master = false;
+
+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 serial_driver = {
+  keyboard_leds,
+  send_keyboard,
+  send_mouse,
+  send_system,
+  send_consumer
+};
+
+// Define these in your Config.h file
+#ifndef SERIAL_LINK_BAUD
+#error "Serial link baud is not set"
+#endif
+
+#ifndef SERIAL_LINK_THREAD_PRIORITY
+#error "Serial link thread priority not set"
+#endif
+
+static SerialConfig config = {
+    .sc_speed = SERIAL_LINK_BAUD
+};
+
+//#define DEBUG_LINK_ERRORS
+
+static uint32_t read_from_serial(SerialDriver* driver, uint8_t link) {
+    const uint32_t buffer_size = 16;
+    uint8_t buffer[buffer_size];
+    uint32_t bytes_read = sdAsynchronousRead(driver, buffer, buffer_size);
+    uint8_t* current = buffer;
+    uint8_t* end = current + bytes_read;
+    while(current < end) {
+        byte_stuffer_recv_byte(link, *current);
+        current++;
+    }
+    return bytes_read;
+}
+
+static void print_error(char* str, eventflags_t flags, SerialDriver* driver) {
+#ifdef DEBUG_LINK_ERRORS
+    if (flags & SD_PARITY_ERROR) {
+        print(str);
+        print(" Parity error\n");
+    }
+    if (flags & SD_FRAMING_ERROR) {
+        print(str);
+        print(" Framing error\n");
+    }
+    if (flags & SD_OVERRUN_ERROR) {
+        print(str);
+        uint32_t size = qSpaceI(&(driver->iqueue));
+        xprintf(" Overrun error, queue size %d\n", size);
+
+    }
+    if (flags & SD_NOISE_ERROR) {
+        print(str);
+        print(" Noise error\n");
+    }
+    if (flags & SD_BREAK_DETECTED) {
+        print(str);
+        print(" Break detected\n");
+    }
+#else
+    (void)str;
+    (void)flags;
+    (void)driver;
+#endif
+}
+
+bool is_serial_link_master(void) {
+    return is_master;
+}
+
+// TODO: Optimize the stack size, this is probably way too big
+static THD_WORKING_AREA(serialThreadStack, 1024);
+static THD_FUNCTION(serialThread, arg) {
+    (void)arg;
+    event_listener_t new_data_listener;
+    event_listener_t sd1_listener;
+    event_listener_t sd2_listener;
+    chEvtRegister(&new_data_event, &new_data_listener, 0);
+    eventflags_t events = CHN_INPUT_AVAILABLE
+            | SD_PARITY_ERROR | SD_FRAMING_ERROR | SD_OVERRUN_ERROR | SD_NOISE_ERROR | SD_BREAK_DETECTED;
+    chEvtRegisterMaskWithFlags(chnGetEventSource(&SD1),
+        &sd1_listener,
+        EVENT_MASK(1),
+        events);
+    chEvtRegisterMaskWithFlags(chnGetEventSource(&SD2),
+        &sd2_listener,
+        EVENT_MASK(2),
+        events);
+    bool need_wait = false;
+    while(true) {
+        eventflags_t flags1 = 0;
+        eventflags_t flags2 = 0;
+        if (need_wait) {
+            eventmask_t mask = chEvtWaitAnyTimeout(ALL_EVENTS, MS2ST(1000));
+            if (mask & EVENT_MASK(1)) {
+                flags1 = chEvtGetAndClearFlags(&sd1_listener);
+                print_error("DOWNLINK", flags1, &SD1);
+            }
+            if (mask & EVENT_MASK(2)) {
+                flags2 = chEvtGetAndClearFlags(&sd2_listener);
+                print_error("UPLINK", flags2, &SD2);
+            }
+        }
+
+        // Always stay as master, even if the USB goes into sleep mode
+        is_master |= usbGetDriverStateI(&USBD1) == USB_ACTIVE;
+        router_set_master(is_master);
+
+        need_wait = true;
+        need_wait &= read_from_serial(&SD2, UP_LINK) == 0;
+        need_wait &= read_from_serial(&SD1, DOWN_LINK) == 0;
+        update_transport();
+    }
+}
+
+void send_data(uint8_t link, const uint8_t* data, uint16_t size) {
+    if (link == DOWN_LINK) {
+        sdWrite(&SD1, data, size);
+    }
+    else {
+        sdWrite(&SD2, data, size);
+    }
+}
+
+static systime_t last_update = 0;
+
+typedef struct {
+    matrix_row_t rows[MATRIX_ROWS];
+} matrix_object_t;
+
+static matrix_object_t last_matrix = {};
+
+SLAVE_TO_MASTER_OBJECT(keyboard_matrix, matrix_object_t);
+MASTER_TO_ALL_SLAVES_OBJECT(serial_link_connected, bool);
+
+static remote_object_t* remote_objects[] = {
+    REMOTE_OBJECT(serial_link_connected),
+    REMOTE_OBJECT(keyboard_matrix),
+};
+
+void init_serial_link(void) {
+    serial_link_connected = false;
+    init_serial_link_hal();
+    add_remote_objects(remote_objects, sizeof(remote_objects)/sizeof(remote_object_t*));
+    init_byte_stuffer();
+    sdStart(&SD1, &config);
+    sdStart(&SD2, &config);
+    chEvtObjectInit(&new_data_event);
+    (void)chThdCreateStatic(serialThreadStack, sizeof(serialThreadStack),
+                              SERIAL_LINK_THREAD_PRIORITY, serialThread, NULL);
+}
+
+void matrix_set_remote(matrix_row_t* rows, uint8_t index);
+
+void serial_link_update(void) {
+    if (read_serial_link_connected()) {
+        serial_link_connected = true;
+    }
+
+    matrix_object_t matrix;
+    bool changed = false;
+    for(uint8_t i=0;i<MATRIX_ROWS;i++) {
+        matrix.rows[i] = matrix_get_row(i);
+        changed |= matrix.rows[i] != last_matrix.rows[i];
+    }
+
+    systime_t current_time = chVTGetSystemTimeX();
+    systime_t delta = current_time - last_update;
+    if (changed || delta > US2ST(1000)) {
+        last_update = current_time;
+        last_matrix = matrix;
+        matrix_object_t* m = begin_write_keyboard_matrix();
+        for(uint8_t i=0;i<MATRIX_ROWS;i++) {
+            m->rows[i] = matrix.rows[i];
+        }
+        end_write_keyboard_matrix();
+        *begin_write_serial_link_connected() = true;
+        end_write_serial_link_connected();
+    }
+
+    matrix_object_t* m = read_keyboard_matrix(0);
+    if (m) {
+        matrix_set_remote(m->rows, 0);
+    }
+}
+
+void signal_data_written(void) {
+    chEvtBroadcast(&new_data_event);
+}
+
+bool is_serial_link_connected(void) {
+    return serial_link_connected;
+}
+
+host_driver_t* get_serial_link_driver(void) {
+    return &serial_driver;
+}
+
+// NOTE: The driver does nothing, because the master handles everything
+uint8_t keyboard_leds(void) {
+    return 0;
+}
+
+void send_keyboard(report_keyboard_t *report) {
+    (void)report;
+}
+
+void send_mouse(report_mouse_t *report) {
+    (void)report;
+}
+
+void send_system(uint16_t data) {
+    (void)data;
+}
+
+void send_consumer(uint16_t data) {
+    (void)data;
+}
+