diff options
Diffstat (limited to 'tinyusb/hw/bsp/same70_xplained/same70_xplained.c')
-rwxr-xr-x | tinyusb/hw/bsp/same70_xplained/same70_xplained.c | 156 |
1 files changed, 156 insertions, 0 deletions
diff --git a/tinyusb/hw/bsp/same70_xplained/same70_xplained.c b/tinyusb/hw/bsp/same70_xplained/same70_xplained.c new file mode 100755 index 00000000..e6e7db0f --- /dev/null +++ b/tinyusb/hw/bsp/same70_xplained/same70_xplained.c @@ -0,0 +1,156 @@ +/* + * 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_PORTC, 8) + +#define BUTTON_PIN GPIO(GPIO_PORTA, 11) +#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); + + // LED + _pmc_enable_periph_clock(ID_PIOC); + 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 + _pmc_enable_periph_clock(ID_PIOA); + 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 + + // Enable USB clock + _pmc_enable_periph_clock(ID_USBHS); + +} + +//--------------------------------------------------------------------+ +// USB Interrupt Handler +//--------------------------------------------------------------------+ +void USBHS_Handler(void) +{ + tud_int_handler(0); +} + +//--------------------------------------------------------------------+ +// 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) +{ + +} |