host interface for pjrc

1 files changed, 135 insertions, 0 deletions

diff --git a/pjrc/host.c b/pjrc/host.c
new file mode 100644
index 000000000..7247288bd
--- /dev/null
+++ b/pjrc/host.c
@@ -0,0 +1,135 @@
+#include <stdint.h>
+#include "usb_keycodes.h"
+#include "usb_keyboard.h"
+#include "usb_mouse.h"
+#include "debug.h"
+#include "host.h"
+
+
+#ifdef USB_NKRO_ENABLE
+bool keyboard_nkro = false;
+#endif
+
+static report_keyboard_t report0;
+static report_keyboard_t report1;
+report_keyboard_t *keyboard_report = &report0;
+report_keyboard_t *keyboard_report_prev = &report1;
+
+static inline void add_key_byte(uint8_t code);
+static inline void add_key_bit(uint8_t code);
+
+
+uint8_t host_keyboard_leds(void)
+{
+    return usb_keyboard_leds;
+}
+
+/* keyboard report operations */
+void host_add_key(uint8_t key)
+{
+#ifdef USB_NKRO_ENABLE
+    if (keyboard_nkro) {
+        add_key_bit(key);
+        return;
+    }
+#endif
+    add_key_byte(key);
+}
+
+void host_add_mod_bit(uint8_t mod)
+{
+    keyboard_report->mods |= mod;
+}
+
+void host_set_mods(uint8_t mods)
+{
+    keyboard_report->mods = mods;
+}
+
+void host_add_code(uint8_t code)
+{
+    if (IS_MOD(code)) {
+        host_add_mod_bit(MOD_BIT(code));
+    } else {
+        host_add_key(code);
+    }
+}
+
+void host_swap_keyboard_report(void)
+{
+    report_keyboard_t *tmp = keyboard_report_prev;
+    keyboard_report_prev = keyboard_report;
+    keyboard_report = tmp;
+}
+
+void host_clear_keyboard_report(void)
+{
+    keyboard_report->mods = 0;
+    for (int8_t i = 0; i < REPORT_KEYS; i++) {
+        keyboard_report->keys[i] = 0;
+    }
+}
+
+uint8_t host_has_anykey(void)
+{
+    uint8_t cnt = 0;
+    for (int i = 0; i < REPORT_KEYS; i++) {
+        if (keyboard_report->keys[i])
+            cnt++;
+    }
+    return cnt;
+}
+
+uint8_t *host_get_keys(void)
+{
+    return keyboard_report->keys;
+}
+
+uint8_t host_get_mods(void)
+{
+    return keyboard_report->mods;
+}
+
+
+void host_send_keyboard_report(void)
+{
+    usb_keyboard_send_report(keyboard_report);
+}
+
+void host_mouse_send(report_mouse_t *report)
+{
+    usb_mouse_send(report->x, report->y, report->v, report->h, report->buttons);
+}
+
+
+static inline void add_key_byte(uint8_t code)
+{
+    // TODO: fix ugly code
+    int8_t i = 0;
+    int8_t empty = -1;
+    for (; i < REPORT_KEYS; i++) {
+        if (keyboard_report_prev->keys[i] == code) {
+            keyboard_report->keys[i] = code;
+            break;
+        }
+        if (empty == -1 &&
+                keyboard_report_prev->keys[i] == 0 &&
+                keyboard_report->keys[i] == 0) {
+            empty = i;
+        }
+    }
+    if (i == REPORT_KEYS) {
+        if (empty != -1) {
+            keyboard_report->keys[empty] = code;
+        }
+    }
+}
+
+static inline void add_key_bit(uint8_t code)
+{
+    if ((code>>3) < REPORT_KEYS) {
+        keyboard_report->keys[code>>3] |= 1<<(code&7);
+    } else {
+        debug("add_key_bit: can't add: "); phex(code); debug("\n");
+    }
+}