4 files changed, 146 insertions, 0 deletions
diff --git a/samd/Makefile b/samd/Makefile
new file mode 100644
index 0000000..314396c
--- /dev/null
+++ b/samd/Makefile
@@ -0,0 +1,15 @@
+include ../Makefile.common
+include Makefile.feather-m4
+#include Makefile.trinket-m0
+
+SERIALPORT = $(shell ../find-serial-port $(USBVID) $(USBPID) || echo cant-find-serial-port)
+
+APP = samd
+
+all: $(BUILDDIR)/$(APP).ino.bin
+
+flash: $(BUILDDIR)/$(APP).ino.bin $(SERIALPORT)
+	$(PKGDIR)/arduino/tools/bossac/1.8.0-48-gb176eee/bossac -R -e -w -v -o$(IMGOFFSET) -p$(SERIALPORT) $<
+
+console:
+	screen $(SERIALPORT) 115200
diff --git a/samd/Makefile.feather-m4 b/samd/Makefile.feather-m4
new file mode 100644
index 0000000..b8c15ec
--- /dev/null
+++ b/samd/Makefile.feather-m4
@@ -0,0 +1,12 @@
+# -*- mode: Makefile -*-
+
+VENDOR = adafruit
+PLATFORM = samd
+BOARD = adafruit_feather_m4
+
+EXTRAPREFS = -prefs "build.f_cpu=120000000L"
+
+USBVID = 239a
+USBPID = 0022
+
+IMGOFFSET = 0x4000
diff --git a/samd/Makefile.trinket-m0 b/samd/Makefile.trinket-m0
new file mode 100644
index 0000000..1c37abb
--- /dev/null
+++ b/samd/Makefile.trinket-m0
@@ -0,0 +1,10 @@
+# -*- mode: Makefile -*-
+
+VENDOR = adafruit
+PLATFORM = samd
+BOARD = adafruit_trinket_m0
+
+USBVID = 239a
+USBPID = '001e|801e'
+
+IMGOFFSET = 0x2000
diff --git a/samd/samd.ino b/samd/samd.ino
new file mode 100644
index 0000000..a09cb5e
--- /dev/null
+++ b/samd/samd.ino
@@ -0,0 +1,109 @@
+// -*- mode: c++ -*-
+
+#include "i2c_message.h"
+
+#include <hidboot.h>
+#include <usbhub.h>
+#include <Wire.h>
+
+#ifdef ADAFRUIT_TRINKET_M0
+#include <Adafruit_DotStar.h>
+
+const uint8_t NUMPIXELS = 1;
+const uint8_t DATAPIN = 7;
+const uint8_t CLOCKPIN = 8;
+
+Adafruit_DotStar px(NUMPIXELS, DATAPIN, CLOCKPIN);
+
+
+void initTXLED() {
+}
+
+void turnOffTXLED() {
+  px.clear();
+  px.show();
+}
+
+void turnOnTXLED() {
+  px.setPixelColor(0, 63, 63, 0);
+  px.show();
+}
+#else // ADAFRUIT_TRINKET_M0
+void initTXLED() {
+  pinMode(LED_BUILTIN, OUTPUT);
+}
+
+void turnOffTXLED() {
+  digitalWrite(LED_BUILTIN, HIGH);
+}
+
+void turnOnTXLED() {
+  digitalWrite(LED_BUILTIN, LOW);
+}
+#endif // ADAFRUIT_TRINKET_M0
+
+void dbg(char *msg) {
+  uint8_t len = strlen(msg);
+
+  Wire.beginTransmission(BTLE_WIREADDR);
+  Wire.write(DBG);
+  Wire.write(len);
+  Wire.write(msg);
+  Wire.endTransmission();
+}
+
+class KeyboardRaw: public KeyboardReportParser {
+public:
+  void Parse(HID *hid, uint32_t is_rpt_id, uint32_t len, uint8_t *buf);
+};
+
+void KeyboardRaw::Parse(HID *hid, uint32_t is_rpt_id, uint32_t len, uint8_t *buf) {
+  turnOnTXLED();
+
+  KeyboardReportParser::Parse(hid, is_rpt_id, len, buf);
+
+  Wire.beginTransmission(BTLE_WIREADDR);
+  Wire.write(KBD);
+  Wire.write(len);
+  Wire.write(buf, len);
+  Wire.endTransmission();
+
+  turnOffTXLED();
+}
+
+USBHost usb;
+USBHub hub(&usb);
+HIDBoot<HID_PROTOCOL_KEYBOARD> hidKeyBoard(&usb);
+KeyboardRaw parser;
+
+void setup() {
+  initTXLED();
+  turnOffTXLED();
+
+  Wire.begin();
+
+  dbg("Booting\r\n");
+
+  if (usb.Init()) {
+    dbg("USB Host did not start!\r\n");
+    while (true) {
+      digitalWrite(LED_BUILTIN, HIGH);
+      delay(125);
+      digitalWrite(LED_BUILTIN, LOW);
+      delay(125);
+      digitalWrite(LED_BUILTIN, HIGH);
+      delay(125);
+      digitalWrite(LED_BUILTIN, LOW);
+      delay(125);
+
+      delay(500);
+    }
+  }
+
+  hidKeyBoard.SetReportParser(0, &parser);
+}
+
+void loop() {
+  asm("wfe \n");
+  usb.Task();
+}