Create duet_mb6hc board

hw/bsp/duet_mb6hc/board.mk

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+DEPS_SUBMODULES += hw/mcu/microchip
+
+CFLAGS += \
+  -mthumb \
+  -mabi=aapcs \
+  -mcpu=cortex-m7 \
+  -mfloat-abi=hard \
+  -mfpu=fpv4-sp-d16 \
+  -nostdlib -nostartfiles \
+  -D__SAME70Q21B__ \
+  -DCFG_TUSB_MCU=OPT_MCU_SAMX7X \
+  -Wno-error=unused-function \
+  -Wno-error=unused-variable \
+  -Dnoexcept=
+
+# suppress following warnings from mcu driver
+CFLAGS += -Wno-error=unused-parameter -Wno-error=cast-align -Wno-error=cast-qual -Wno-error=redundant-decls
+
+ASF_DIR = hw/mcu/microchip/same70
+
+# All source paths should be relative to the top level.
+LD_FILE = $(ASF_DIR)/same70b/gcc/gcc/same70q21b_flash.ld
+
+SRC_C += \
+	src/portable/microchip/samx7x/dcd_samx7x.c \
+	$(ASF_DIR)/same70b/gcc/gcc/startup_same70q21b.c \
+	$(ASF_DIR)/same70b/gcc/system_same70q21b.c \
+	$(ASF_DIR)/hpl/core/hpl_init.c \
+	$(ASF_DIR)/hpl/usart/hpl_usart.c \
+	$(ASF_DIR)/hpl/pmc/hpl_pmc.c \
+	$(ASF_DIR)/hal/src/hal_usart_async.c \
+	$(ASF_DIR)/hal/src/hal_io.c \
+	$(ASF_DIR)/hal/src/hal_atomic.c \
+	$(ASF_DIR)/hal/utils/src/utils_ringbuffer.c
+
+INC += \
+  $(TOP)/hw/bsp/$(BOARD) \
+	$(TOP)/$(ASF_DIR) \
+	$(TOP)/$(ASF_DIR)/config \
+	$(TOP)/$(ASF_DIR)/same70b/include \
+	$(TOP)/$(ASF_DIR)/hal/include \
+	$(TOP)/$(ASF_DIR)/hal/utils/include \
+	$(TOP)/$(ASF_DIR)/hpl/core \
+	$(TOP)/$(ASF_DIR)/hpl/pio \
+	$(TOP)/$(ASF_DIR)/hpl/pmc \
+	$(TOP)/$(ASF_DIR)/hri \
+	$(TOP)/$(ASF_DIR)/CMSIS/Core/Include
+
+# For freeRTOS port source
+FREERTOS_PORT = ARM_CM7
+
+# For flash-jlink target
+JLINK_DEVICE = SAME70Q21B
+
+# flash using edbg from https://github.com/ataradov/edbg
+# Note: SAME70's GPNVM1 must be set to 1 to boot from flash with
+# 	edbg -t same70 -F w0,1,1
+flash: $(BUILD)/$(PROJECT).bin
+	edbg --verbose -t same70 -pv -f $< 

hw/bsp/duet_mb6hc/duet_mb6hc.c

@@ -0,0 +1,158 @@
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2019, hathach (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.
+ *
+ */
+
+#include "sam.h"
+#include "bsp/board.h"
+
+#include "peripheral_clk_config.h"
+#include "hpl/usart/hpl_usart_base.h"
+#include "hpl/pmc/hpl_pmc.h"
+#include "hal/include/hal_init.h"
+#include "hal/include/hal_usart_async.h"
+#include "hal/include/hal_gpio.h"
+
+//--------------------------------------------------------------------+
+// MACRO TYPEDEF CONSTANT ENUM DECLARATION
+//--------------------------------------------------------------------+
+#define LED_PIN               GPIO(GPIO_PORTD, 26)
+
+#define BUTTON_PIN            GPIO(GPIO_PORTD, 25)
+#define BUTTON_STATE_ACTIVE   0
+
+#define UART_TX_PIN           GPIO(GPIO_PORTB, 4)
+#define UART_RX_PIN           GPIO(GPIO_PORTA, 21)
+
+static struct usart_async_descriptor edbg_com;
+static uint8_t edbg_com_buffer[64];
+static volatile bool uart_busy = false;
+
+static void tx_cb_EDBG_COM(const struct usart_async_descriptor *const io_descr)
+{
+  (void) io_descr;
+  uart_busy = false;
+}
+
+//------------- IMPLEMENTATION -------------//
+void board_init(void)
+{
+  init_mcu();
+
+  /* Disable Watchdog */
+  hri_wdt_set_MR_WDDIS_bit(WDT);
+
+  _pmc_enable_periph_clock(ID_PIOD);
+
+  // LED
+  gpio_set_pin_level(LED_PIN, false);
+  gpio_set_pin_direction(LED_PIN, GPIO_DIRECTION_OUT);
+  gpio_set_pin_function(LED_PIN, GPIO_PIN_FUNCTION_OFF);
+
+  // Button
+  gpio_set_pin_direction(BUTTON_PIN, GPIO_DIRECTION_IN);
+  gpio_set_pin_pull_mode(BUTTON_PIN, GPIO_PULL_UP);
+  gpio_set_pin_function(BUTTON_PIN, GPIO_PIN_FUNCTION_OFF);
+
+  // Uart via EDBG Com
+  _pmc_enable_periph_clock(ID_USART1);
+  gpio_set_pin_function(UART_RX_PIN, MUX_PA21A_USART1_RXD1);
+  gpio_set_pin_function(UART_TX_PIN, MUX_PB4D_USART1_TXD1);
+
+  usart_async_init(&edbg_com, USART1, edbg_com_buffer, sizeof(edbg_com_buffer), _usart_get_usart_async());
+  usart_async_set_baud_rate(&edbg_com, CFG_BOARD_UART_BAUDRATE);
+  usart_async_register_callback(&edbg_com, USART_ASYNC_TXC_CB, tx_cb_EDBG_COM);
+  usart_async_enable(&edbg_com);
+
+#if CFG_TUSB_OS  == OPT_OS_NONE
+  // 1ms tick timer (samd SystemCoreClock may not correct)
+  SysTick_Config(CONF_CPU_FREQUENCY / 1000);
+#endif
+
+  _pmc_enable_periph_clock(ID_USBHS);
+
+#if CFG_TUH_ENABLED
+  gpio_set_pin_level(USB_HOST_POWER_PIN, state);
+# endif
+}
+
+//--------------------------------------------------------------------+
+// USB Interrupt Handler
+//--------------------------------------------------------------------+
+void USBHS_Handler(void)
+{
+#if CFG_TUD_ENABLED
+  tud_int_handler(0);
+#endif
+}
+
+//--------------------------------------------------------------------+
+// Board porting API
+//--------------------------------------------------------------------+
+
+void board_led_write(bool state)
+{
+  gpio_set_pin_level(LED_PIN, state);
+}
+
+uint32_t board_button_read(void)
+{
+  return BUTTON_STATE_ACTIVE == gpio_get_pin_level(BUTTON_PIN);
+}
+
+int board_uart_read(uint8_t* buf, int len)
+{
+  (void) buf; (void) len;
+  return 0;
+}
+
+int board_uart_write(void const * buf, int len)
+{
+  // while until previous transfer is complete
+  while(uart_busy) {}
+  uart_busy = true;
+
+  io_write(&edbg_com.io, buf, len);
+  return len;
+}
+
+#if CFG_TUSB_OS  == OPT_OS_NONE
+volatile uint32_t system_ticks = 0;
+
+void SysTick_Handler (void)
+{
+  system_ticks++;
+}
+
+uint32_t board_millis(void)
+{
+  return system_ticks;
+}
+#endif
+
+// Required by __libc_init_array in startup code if we are compiling using
+// -nostdlib/-nostartfiles.
+void _init(void)
+{
+
+}