diff --git a/hw/bsp/samd21/boards/sparkfun_samd21_mini_usb/board.cmake b/hw/bsp/samd21/boards/sparkfun_samd21_mini_usb/board.cmake new file mode 100644 index 000000000..c1a612936 --- /dev/null +++ b/hw/bsp/samd21/boards/sparkfun_samd21_mini_usb/board.cmake @@ -0,0 +1,9 @@ +set(JLINK_DEVICE ATSAMD21G18) +set(LD_FILE_GNU ${CMAKE_CURRENT_LIST_DIR}/${BOARD}.ld) + +function(update_board TARGET) + target_compile_definitions(${TARGET} PUBLIC + __SAMD21G18A__ + CFG_EXAMPLE_VIDEO_READONLY + ) +endfunction() diff --git a/hw/bsp/samd21/boards/sparkfun_samd21_mini_usb/board.h b/hw/bsp/samd21/boards/sparkfun_samd21_mini_usb/board.h new file mode 100644 index 000000000..60a86d743 --- /dev/null +++ b/hw/bsp/samd21/boards/sparkfun_samd21_mini_usb/board.h @@ -0,0 +1,51 @@ +/* + * The MIT License (MIT) + * + * Copyright (c) 2020, 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. + */ + +#ifndef BOARD_H_ +#define BOARD_H_ + +#ifdef __cplusplus + extern "C" { +#endif + +// LED +#define LED_PIN /*PA*/17 /*(D13)*/ +#define LED_STATE_ON 1 + +// Button +#define BUTTON_PIN /*PA*/14 /*(D2)*/ +#define BUTTON_STATE_ACTIVE 0 + +// UART +#define UART_SERCOM 0 +#define UART_RX_PIN /*PA*/11 /*(D0)*/ +#define UART_TX_PIN /*PA*/10 /*(D1)*/ + +#ifdef __cplusplus + } +#endif + +#endif /* BOARD_H_ */ diff --git a/hw/bsp/samd21/boards/sparkfun_samd21_mini_usb/board.mk b/hw/bsp/samd21/boards/sparkfun_samd21_mini_usb/board.mk new file mode 100644 index 000000000..d6c9150b3 --- /dev/null +++ b/hw/bsp/samd21/boards/sparkfun_samd21_mini_usb/board.mk @@ -0,0 +1,9 @@ +CFLAGS += -D__SAMD21G18A__ -DCFG_EXAMPLE_VIDEO_READONLY + +# All source paths should be relative to the top level. +LD_FILE = $(BOARD_PATH)/$(BOARD).ld + +# For flash-jlink target +JLINK_DEVICE = ATSAMD21G18 + +flash: flash-bossac diff --git a/hw/bsp/samd21/boards/sparkfun_samd21_mini_usb/sparkfun_samd21_mini_usb.ld b/hw/bsp/samd21/boards/sparkfun_samd21_mini_usb/sparkfun_samd21_mini_usb.ld new file mode 100644 index 000000000..f5d2ad151 --- /dev/null +++ b/hw/bsp/samd21/boards/sparkfun_samd21_mini_usb/sparkfun_samd21_mini_usb.ld @@ -0,0 +1,146 @@ +/** + * \file + * + * \brief Linker script for running in internal FLASH on the SAMD21G18A + * + * Copyright (c) 2017 Microchip Technology Inc. + * + * \asf_license_start + * + * \page License + * + * SPDX-License-Identifier: Apache-2.0 + * + * Licensed under the Apache License, Version 2.0 (the "License"); you may + * not use this file except in compliance with the License. + * You may obtain a copy of the Licence at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an AS IS BASIS, WITHOUT + * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * + * \asf_license_stop + * + */ + + +OUTPUT_FORMAT("elf32-littlearm", "elf32-littlearm", "elf32-littlearm") +OUTPUT_ARCH(arm) +SEARCH_DIR(.) + +/* Memory Spaces Definitions */ +MEMORY +{ + rom (rx) : ORIGIN = 0x00000000 + 8K, LENGTH = 0x00040000 - 8K + ram (rwx) : ORIGIN = 0x20000000, LENGTH = 0x00008000-0x0004 /* 4 bytes used by bootloader to keep data between resets */ +} + +/* The stack size used by the application. NOTE: you need to adjust according to your application. */ +STACK_SIZE = DEFINED(STACK_SIZE) ? STACK_SIZE : DEFINED(__stack_size__) ? __stack_size__ : 0x2000; + +ENTRY(Reset_Handler) + +/* Section Definitions */ +SECTIONS +{ + .text : + { + . = ALIGN(4); + _sfixed = .; + KEEP(*(.vectors .vectors.*)) + *(.text .text.* .gnu.linkonce.t.*) + *(.glue_7t) *(.glue_7) + *(.rodata .rodata* .gnu.linkonce.r.*) + *(.ARM.extab* .gnu.linkonce.armextab.*) + + /* Support C constructors, and C destructors in both user code + and the C library. This also provides support for C++ code. */ + . = ALIGN(4); + KEEP(*(.init)) + . = ALIGN(4); + __preinit_array_start = .; + KEEP (*(.preinit_array)) + __preinit_array_end = .; + + . = ALIGN(4); + __init_array_start = .; + KEEP (*(SORT(.init_array.*))) + KEEP (*(.init_array)) + __init_array_end = .; + + . = ALIGN(4); + KEEP (*crtbegin.o(.ctors)) + KEEP (*(EXCLUDE_FILE (*crtend.o) .ctors)) + KEEP (*(SORT(.ctors.*))) + KEEP (*crtend.o(.ctors)) + + . = ALIGN(4); + KEEP(*(.fini)) + + . = ALIGN(4); + __fini_array_start = .; + KEEP (*(.fini_array)) + KEEP (*(SORT(.fini_array.*))) + __fini_array_end = .; + + KEEP (*crtbegin.o(.dtors)) + KEEP (*(EXCLUDE_FILE (*crtend.o) .dtors)) + KEEP (*(SORT(.dtors.*))) + KEEP (*crtend.o(.dtors)) + + . = ALIGN(4); + _efixed = .; /* End of text section */ + } > rom + + /* .ARM.exidx is sorted, so has to go in its own output section. */ + PROVIDE_HIDDEN (__exidx_start = .); + .ARM.exidx : + { + *(.ARM.exidx* .gnu.linkonce.armexidx.*) + } > rom + PROVIDE_HIDDEN (__exidx_end = .); + + . = ALIGN(4); + _etext = .; + + .relocate : AT (_etext) + { + . = ALIGN(4); + _srelocate = .; + *(.ramfunc .ramfunc.*); + *(.data .data.*); + . = ALIGN(4); + _erelocate = .; + } > ram + + /* .bss section which is used for uninitialized data */ + .bss (NOLOAD) : + { + . = ALIGN(4); + _sbss = . ; + _szero = .; + *(.bss .bss.*) + *(COMMON) + . = ALIGN(4); + _ebss = . ; + _ezero = .; + end = .; + } > ram + + /* stack section */ + .stack (NOLOAD): + { + . = ALIGN(8); + _sstack = .; + . = . + STACK_SIZE; + . = ALIGN(8); + _estack = .; + } > ram + + . = ALIGN(4); + _end = . ; +} diff --git a/hw/bsp/samd21/boards/trinket_m0/board.h b/hw/bsp/samd21/boards/trinket_m0/board.h index 741f2a7f3..c94a3abb6 100644 --- a/hw/bsp/samd21/boards/trinket_m0/board.h +++ b/hw/bsp/samd21/boards/trinket_m0/board.h @@ -31,3 +31,5 @@ // UART #define UART_SERCOM 0 +#define UART_RX_PIN 7 +#define UART_TX_PIN 6 diff --git a/hw/bsp/samd21/family.c b/hw/bsp/samd21/family.c index ccb2c99b1..7ca20c458 100644 --- a/hw/bsp/samd21/family.c +++ b/hw/bsp/samd21/family.c @@ -172,8 +172,21 @@ uint32_t board_button_read(void) { static void uart_init(void) { #if UART_SERCOM == 0 - gpio_set_pin_function(PIN_PA06, PINMUX_PA06D_SERCOM0_PAD2); - gpio_set_pin_function(PIN_PA07, PINMUX_PA07D_SERCOM0_PAD3); + #if UART_TX_PIN == 6 + gpio_set_pin_function(PIN_PA06, PINMUX_PA06D_SERCOM0_PAD2); + #elif UART_TX_PIN == 10 + gpio_set_pin_function(PIN_PA10, PINMUX_PA10C_SERCOM0_PAD2); + #else + #error "UART_TX_PIN not supported" + #endif + + #if UART_RX_PIN == 7 + gpio_set_pin_function(PIN_PA07, PINMUX_PA07D_SERCOM0_PAD3); + #elif UART_RX_PIN == 11 + gpio_set_pin_function(PIN_PA11, PINMUX_PA11C_SERCOM0_PAD3); + #else + #error "UART_RX_PIN not supported" +#endif // setup clock (48MHz) _pm_enable_bus_clock(PM_BUS_APBC, SERCOM0); @@ -194,6 +207,7 @@ static void uart_init(void) SERCOM_USART_CTRLB_TXEN | /* tx enabled */ SERCOM_USART_CTRLB_RXEN; /* rx enabled */ + /* 115200 */ SERCOM0->USART.BAUD.reg = SERCOM_USART_BAUD_FRAC_FP(0) | SERCOM_USART_BAUD_FRAC_BAUD(26); SERCOM0->USART.CTRLA.bit.ENABLE = 1; /* activate SERCOM */