add circuitpython code

4 files changed, 203 insertions, 0 deletions

diff --git a/circuitpython/lib/tinyusb/hw/bsp/f1c100s/README.md b/circuitpython/lib/tinyusb/hw/bsp/f1c100s/README.md
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+# BSP support for F1Cx00s boards
+
+This folder contains necessary file and scripts to run TinyUSB examples on F1Cx00s boards.
+
+Currently tested on:
+
+- Lichee Pi Nano (F1C100s)
+- [Widora Tiny200 v2 (also called MangoPi-R3c)](https://mangopi.org/tiny200)
+
+## Flashing
+
+There are two options to put your code into the MCU: `flash` and `exec`. Both modes require you to install [xfel](https://github.com/xboot/xfel) tool to your PATH. You must enter FEL mode before any operation can be done. To enter FEL mode, press BOOT button, then press RESET once, and release BOOT button. You will find VID/PID=1f3a:efe8 on your PC.
+
+Exec: `make BOARD=f1c100s exec` will just upload the image to the DDR ram and execute it. It will not touch anything in the SPI flash.
+
+Flash: `make BOARD=f1c100s flash` will write the image to SPI flash, and then reset the chip to execute it.
+
+## TODO
+
+* Add F1C100s to `#if CFG_TUSB_MCU == OPT_MCU_LPC43XX || CFG_TUSB_MCU == OPT_MCU_LPC18XX || CFG_TUSB_MCU == OPT_MCU_MIMXRT10XX` high speed MCU check in examples (maybe we should extract the logic?)
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diff --git a/circuitpython/lib/tinyusb/hw/bsp/f1c100s/board.h b/circuitpython/lib/tinyusb/hw/bsp/f1c100s/board.h
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+++ b/circuitpython/lib/tinyusb/hw/bsp/f1c100s/board.h
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+// Nothing valuable here
\ No newline at end of file
diff --git a/circuitpython/lib/tinyusb/hw/bsp/f1c100s/board.mk b/circuitpython/lib/tinyusb/hw/bsp/f1c100s/board.mk
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+++ b/circuitpython/lib/tinyusb/hw/bsp/f1c100s/board.mk
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+DEPS_SUBMODULES += hw/mcu/allwinner
+
+DEFINES += -D__ARM32_ARCH__=5 -D__ARM926EJS__
+
+CFLAGS += \
+  -ffreestanding \
+  -std=gnu99 \
+  -march=armv5te \
+  -mtune=arm926ej-s \
+  -mfloat-abi=soft \
+  -marm \
+  -mno-thumb-interwork \
+  -Wno-unused-parameter \
+  -Wno-float-equal \
+  -DCFG_TUSB_MCU=OPT_MCU_F1C100S \
+  -Wno-error=cast-align \
+  -Wno-error=address-of-packed-member \
+  $(DEFINES)
+
+LD_FILE = hw/mcu/allwinner/f1c100s/f1c100s.ld
+LDFLAGS += -nostdlib -lgcc
+MCU_DIR = hw/mcu/allwinner/f1c100s
+
+SRC_C += \
+	src/portable/sunxi/dcd_sunxi_musb.c \
+	$(MCU_DIR)/machine/sys-uart.c \
+	$(MCU_DIR)/machine/exception.c \
+	$(MCU_DIR)/machine/sys-clock.c \
+	$(MCU_DIR)/machine/sys-copyself.c \
+	$(MCU_DIR)/machine/sys-dram.c \
+	$(MCU_DIR)/machine/sys-mmu.c \
+	$(MCU_DIR)/machine/sys-spi-flash.c \
+	$(MCU_DIR)/machine/f1c100s-intc.c \
+	$(MCU_DIR)/lib/malloc.c \
+	$(MCU_DIR)/lib/printf.c 
+
+SRC_S += \
+  $(MCU_DIR)/machine/start.S \
+	$(MCU_DIR)/lib/memcpy.S \
+	$(MCU_DIR)/lib/memset.S
+
+INC += \
+	$(TOP)/$(MCU_DIR)/include \
+	$(TOP)/$(BOARD_PATH)
+
+# flash target using xfel
+flash: flash-xfel
+
+exec: $(BUILD)/$(PROJECT).bin
+	xfel ddr 
+	xfel write 0x80000000 $<
+	xfel exec 0x80000000
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diff --git a/circuitpython/lib/tinyusb/hw/bsp/f1c100s/f1c100s.c b/circuitpython/lib/tinyusb/hw/bsp/f1c100s/f1c100s.c
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+++ b/circuitpython/lib/tinyusb/hw/bsp/f1c100s/f1c100s.c
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+/* 
+ * 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 <malloc.h>
+#include <irqflags.h>
+#include <f1c100s-irq.h>
+#include "bsp/board.h"
+#include "board.h"
+
+extern void sys_uart_putc(char c);
+
+//--------------------------------------------------------------------+
+// Board porting API
+//--------------------------------------------------------------------+
+
+static void timer_init(void);
+
+void board_init(void)
+{
+  arch_local_irq_disable();
+	do_init_mem_pool();
+  f1c100s_intc_init();
+  timer_init();
+  printf("Timer INIT done\n");
+  arch_local_irq_enable();
+}
+
+// No LED, no button
+void board_led_write(bool state)
+{
+
+}
+
+uint32_t board_button_read(void)
+{
+  return 0;
+}
+
+int board_uart_read(uint8_t* buf, int len)
+{
+  return 0;
+}
+
+int board_uart_write(void const * buf, int len)
+{
+  int txsize = len;
+  while (txsize--) {
+    sys_uart_putc(*(uint8_t const*)buf);
+    buf++;
+  }
+  return len;
+}
+
+#if CFG_TUSB_OS  == OPT_OS_NONE
+volatile uint32_t system_ticks = 0;
+
+uint32_t board_millis(void)
+{
+  return system_ticks;
+}
+
+static void timer_handler(void)
+{
+  volatile uint32_t *temp_addr = (uint32_t *)(0x01C20C00 + 0x04);
+
+  /* clear timer */
+  *temp_addr |= 0x01;
+
+  system_ticks++;
+}
+
+static void timer_init(void) {
+  uint32_t temp;
+  volatile uint32_t *temp_addr;
+
+  /* reload value */
+  temp = 12000000 / 1000;
+  temp_addr = (uint32_t *)(0x01C20C00 + 0x14);
+  *temp_addr = temp;
+
+  /* continuous | /2 | 24Mhz |  reload*/
+  temp = (0x00 << 7) | (0x01 << 4) | (0x01 << 2) | (0x00 << 1);
+  temp_addr = (uint32_t *)(0x01C20C00 + 0x10);
+  *temp_addr &= 0xffffff00;
+  *temp_addr |= temp;
+
+  /* open timer irq */
+  temp = 0x01 << 0;
+  temp_addr = (uint32_t *)(0x01C20C00);
+  *temp_addr |= temp;
+
+  /* set init value */
+  temp_addr = (uint32_t *)(0x01C20C00 + 0x18);
+  *temp_addr = 0;
+
+  /* begin run timer */
+  temp = 0x01 << 0;
+  temp_addr = (uint32_t *)(0x01C20C00 + 0x10);
+  *temp_addr |= temp;
+
+  f1c100s_intc_set_isr(F1C100S_IRQ_TIMER0, timer_handler);
+  f1c100s_intc_enable_irq(F1C100S_IRQ_TIMER0);
+}
+#else 
+static void timer_init(void) { }
+#endif