Begin to carve out platform/protocol API - Single main loop (#13843)

* Begin to carve out platform/protocol API

* Fix up after rebase

1 files changed, 178 insertions, 0 deletions

diff --git a/tmk_core/protocol/vusb/protocol.c b/tmk_core/protocol/vusb/protocol.c
new file mode 100644
index 000000000..89dc795b2
--- /dev/null
+++ b/tmk_core/protocol/vusb/protocol.c
@@ -0,0 +1,178 @@
+/* Name: main.c
+ * Project: hid-mouse, a very simple HID example
+ * Author: Christian Starkjohann
+ * Creation Date: 2008-04-07
+ * Tabsize: 4
+ * Copyright: (c) 2008 by OBJECTIVE DEVELOPMENT Software GmbH
+ * License: GNU GPL v2 (see License.txt), GNU GPL v3 or proprietary (CommercialLicense.txt)
+ * This Revision: $Id: main.c 790 2010-05-30 21:00:26Z cs $
+ */
+
+#include <stdint.h>
+
+#include <avr/interrupt.h>
+#include <avr/power.h>
+#include <avr/wdt.h>
+#include <avr/sleep.h>
+
+#include <usbdrv/usbdrv.h>
+
+#include "vusb.h"
+
+#include "keyboard.h"
+#include "host.h"
+#include "timer.h"
+#include "print.h"
+#include "suspend.h"
+#include "wait.h"
+#include "sendchar.h"
+
+#ifdef SLEEP_LED_ENABLE
+#    include "sleep_led.h"
+#endif
+
+#ifdef CONSOLE_ENABLE
+void console_task(void);
+#endif
+
+#ifdef RAW_ENABLE
+void raw_hid_task(void);
+#endif
+
+/* This is from main.c of USBaspLoader */
+static void initForUsbConnectivity(void) {
+    uint8_t i = 0;
+
+    usbInit();
+    /* enforce USB re-enumerate: */
+    usbDeviceDisconnect(); /* do this while interrupts are disabled */
+    while (--i) {          /* fake USB disconnect for > 250 ms */
+        wdt_reset();
+        wait_ms(1);
+    }
+    usbDeviceConnect();
+}
+
+static void vusb_send_remote_wakeup(void) {
+    cli();
+
+    uint8_t ddr_orig = USBDDR;
+    USBOUT |= (1 << USBMINUS);
+    USBDDR = ddr_orig | USBMASK;
+    USBOUT ^= USBMASK;
+
+    wait_ms(25);
+
+    USBOUT ^= USBMASK;
+    USBDDR = ddr_orig;
+    USBOUT &= ~(1 << USBMINUS);
+
+    sei();
+}
+
+bool vusb_suspended = false;
+
+static void vusb_suspend(void) {
+    vusb_suspended = true;
+
+#ifdef SLEEP_LED_ENABLE
+    sleep_led_enable();
+#endif
+
+    suspend_power_down();
+}
+
+#if USB_COUNT_SOF
+static void vusb_wakeup(void) {
+    vusb_suspended = false;
+    suspend_wakeup_init();
+
+#    ifdef SLEEP_LED_ENABLE
+    sleep_led_disable();
+#    endif
+}
+#endif
+
+/** \brief Setup USB
+ *
+ * FIXME: Needs doc
+ */
+static void setup_usb(void) { initForUsbConnectivity(); }
+
+uint16_t sof_timer = 0;
+
+void protocol_setup(void) {
+#if USB_COUNT_SOF
+    sof_timer = timer_read();
+#endif
+
+#ifdef CLKPR
+    // avoid unintentional changes of clock frequency in devices that have a
+    // clock prescaler
+    clock_prescale_set(clock_div_1);
+#endif
+    keyboard_setup();
+}
+
+void protocol_init(void) {
+    setup_usb();
+    sei();
+
+    keyboard_init();
+
+    host_set_driver(vusb_driver());
+
+    wait_ms(50);
+
+#ifdef SLEEP_LED_ENABLE
+    sleep_led_init();
+#endif
+}
+
+void protocol_task(void) {
+#if USB_COUNT_SOF
+    if (usbSofCount != 0) {
+        usbSofCount = 0;
+        sof_timer   = timer_read();
+        if (vusb_suspended) {
+            vusb_wakeup();
+        }
+    } else {
+        // Suspend when no SOF in 3ms-10ms(7.1.7.4 Suspending of USB1.1)
+        if (!vusb_suspended && timer_elapsed(sof_timer) > 5) {
+            vusb_suspend();
+        }
+    }
+#endif
+    if (vusb_suspended) {
+        vusb_suspend();
+        if (suspend_wakeup_condition()) {
+            vusb_send_remote_wakeup();
+        }
+    } else {
+        usbPoll();
+
+        // TODO: configuration process is inconsistent. it sometime fails.
+        // To prevent failing to configure NOT scan keyboard during configuration
+        if (usbConfiguration && usbInterruptIsReady()) {
+            keyboard_task();
+        }
+        vusb_transfer_keyboard();
+
+#ifdef RAW_ENABLE
+        usbPoll();
+
+        if (usbConfiguration && usbInterruptIsReady3()) {
+            raw_hid_task();
+        }
+#endif
+
+#ifdef CONSOLE_ENABLE
+        usbPoll();
+
+        if (usbConfiguration && usbInterruptIsReady3()) {
+            console_task();
+        }
+#endif
+    }
+}