add circuitpython code

1 files changed, 120 insertions, 0 deletions

diff --git a/circuitpython/lib/tinyusb/hw/bsp/fomu/fomu.c b/circuitpython/lib/tinyusb/hw/bsp/fomu/fomu.c
new file mode 100644
index 0000000..12b7bfd
--- /dev/null
+++ b/circuitpython/lib/tinyusb/hw/bsp/fomu/fomu.c
@@ -0,0 +1,120 @@
+/* 
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2019 Ha Thach (tinyusb.org)
+ *
+ * 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.
+ *
+ * This file is part of the TinyUSB stack.
+ */
+
+#include <stdint.h>
+#include <stdbool.h>
+#include "../board.h"
+#include "csr.h"
+#include "irq.h"
+
+//--------------------------------------------------------------------+
+// Board porting API
+//--------------------------------------------------------------------+
+
+void fomu_error(uint32_t line)
+{
+  (void)line;
+  TU_BREAKPOINT();
+}
+
+volatile uint32_t system_ticks = 0;
+static void timer_init(void)
+{
+	int t;
+
+	timer0_en_write(0);
+	t = CONFIG_CLOCK_FREQUENCY / 1000; // 1000 kHz tick
+	timer0_reload_write(t);
+	timer0_load_write(t);
+	timer0_en_write(1);
+  timer0_ev_enable_write(1);
+  timer0_ev_pending_write(1);
+	irq_setmask(irq_getmask() | (1 << TIMER0_INTERRUPT));
+}
+
+void isr(void)
+{
+  unsigned int irqs;
+
+  irqs = irq_pending() & irq_getmask();
+
+#if CFG_TUSB_RHPORT0_MODE == OPT_MODE_DEVICE
+  if (irqs & (1 << USB_INTERRUPT)) {
+    tud_int_handler(0);
+  }
+#endif
+  if (irqs & (1 << TIMER0_INTERRUPT)) {
+    system_ticks++;
+    timer0_ev_pending_write(1);
+  }
+}
+
+void board_init(void)
+{
+  irq_setmask(0);
+  irq_setie(1);
+  timer_init();
+  return;
+}
+
+void board_led_write(bool state)
+{
+  rgb_ctrl_write(0xff);
+  rgb_raw_write(state);
+}
+
+uint32_t board_button_read(void)
+{
+  return 0;
+}
+
+int board_uart_read(uint8_t* buf, int len)
+{
+  (void) buf;
+  (void) len;
+  return 0;
+}
+
+int board_uart_write(void const * buf, int len)
+{
+  int32_t offset = 0;
+  uint8_t const* buf8 = (uint8_t const*) buf;
+  for (offset = 0; offset < len; offset++)
+  {
+    if (!(messible_status_read() & CSR_MESSIBLE_STATUS_FULL_OFFSET))
+    {
+      messible_in_write(buf8[offset]);
+    }
+  }
+  return len;
+}
+
+#if CFG_TUSB_OS == OPT_OS_NONE
+uint32_t board_millis(void)
+{
+  return system_ticks;
+}
+#endif