1 files changed, 75 insertions, 0 deletions
diff --git a/ports/litex/boards/fomu/board.c b/ports/litex/boards/fomu/board.c
new file mode 100644
index 000000000..97e1ecadd
--- /dev/null
+++ b/ports/litex/boards/fomu/board.c
@@ -0,0 +1,75 @@
+/*
+ * This file is part of the MicroPython project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2017 Scott Shawcroft for Adafruit Industries
+ *
+ * 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 "boards/board.h"
+#include "mpconfigboard.h"
+#include "csr.h"
+
+// ICE40 LED Driver hard macro.
+// See http://www.latticesemi.com/-/media/LatticeSemi/Documents/ApplicationNotes/IK/ICE40LEDDriverUsageGuide.ashx?document_id=50668
+enum led_registers {
+    LEDDCR0 = 8,
+    LEDDBR = 9,
+    LEDDONR = 10,
+    LEDDOFR = 11,
+    LEDDBCRR = 5,
+    LEDDBCFR = 6,
+    LEDDPWRR = 1,
+    LEDDPWRG = 2,
+    LEDDPWRB = 3,
+};
+
+#define BREATHE_ENABLE (1 << 7)
+#define BREATHE_EDGE_ON (0 << 6)
+#define BREATHE_EDGE_BOTH (1 << 6)
+#define BREATHE_MODE_MODULATE (1 << 5)
+#define BREATHE_RATE(x) ((x & 7) << 0)
+
+// Write a value into the LEDDA_IP register.
+static void ledda_write(uint8_t value, uint8_t addr) {
+    rgb_addr_write(addr);
+    rgb_dat_write(value);
+}
+
+void board_init(void) {
+    uint8_t onrate = 15;
+    uint8_t offrate = 1;
+
+    ledda_write(BREATHE_ENABLE | BREATHE_MODE_MODULATE | BREATHE_RATE(onrate), LEDDBCRR);
+    ledda_write(BREATHE_ENABLE | BREATHE_MODE_MODULATE | BREATHE_RATE(offrate), LEDDBCFR);
+
+    ledda_write(123, LEDDPWRR); // Red
+    ledda_write(3, LEDDPWRG);   // Green
+    ledda_write(98, LEDDPWRB);  // Blue
+}
+
+bool board_requests_safe_mode(void) {
+    return false;
+}
+
+void reset_board(void) {
+
+}