diff options
Diffstat (limited to 'tinyusb/hw/bsp/samg55xplained/samg55xplained.c')
-rwxr-xr-x | tinyusb/hw/bsp/samg55xplained/samg55xplained.c | 157 |
1 files changed, 157 insertions, 0 deletions
diff --git a/tinyusb/hw/bsp/samg55xplained/samg55xplained.c b/tinyusb/hw/bsp/samg55xplained/samg55xplained.c new file mode 100755 index 00000000..ed106b06 --- /dev/null +++ b/tinyusb/hw/bsp/samg55xplained/samg55xplained.c @@ -0,0 +1,157 @@ +/* + * 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 "hal/include/hal_init.h" +#include "hal/include/hpl_usart_sync.h" +#include "hpl/pmc/hpl_pmc.h" +#include "hal/include/hal_gpio.h" + + +//--------------------------------------------------------------------+ +// MACRO TYPEDEF CONSTANT ENUM DECLARATION +//--------------------------------------------------------------------+ + +#define LED_PIN GPIO(GPIO_PORTA, 6) + +#define BUTTON_PIN GPIO(GPIO_PORTA, 2) +#define BUTTON_STATE_ACTIVE 0 + +#define UART_TX_PIN GPIO(GPIO_PORTA, 28) +#define UART_RX_PIN GPIO(GPIO_PORTA, 27) + +struct _usart_sync_device edbg_com; + +//------------- IMPLEMENTATION -------------// +void board_init(void) +{ + init_mcu(); + + _pmc_enable_periph_clock(ID_PIOA); + + /* Disable Watchdog */ + hri_wdt_set_MR_WDDIS_bit(WDT); + + // 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_FLEXCOM7); + gpio_set_pin_function(UART_RX_PIN, MUX_PA27B_FLEXCOM7_RXD); + gpio_set_pin_function(UART_TX_PIN, MUX_PA28B_FLEXCOM7_TXD); + + _usart_sync_init(&edbg_com, FLEXCOM7); + _usart_sync_set_baud_rate(&edbg_com, CFG_BOARD_UART_BAUDRATE); + _usart_sync_set_mode(&edbg_com, USART_MODE_ASYNCHRONOUS); + _usart_sync_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 + + // USB Pin, Clock init + + /* Clear SYSIO 10 & 11 for USB DM & DP */ + hri_matrix_clear_CCFG_SYSIO_reg(MATRIX, CCFG_SYSIO_SYSIO10 | CCFG_SYSIO_SYSIO11); + + // Enable clock + _pmc_enable_periph_clock(ID_UDP); + + /* USB Device mode & Transceiver active */ + hri_matrix_write_CCFG_USBMR_reg(MATRIX, CCFG_USBMR_USBMODE); +} + +//--------------------------------------------------------------------+ +// USB Interrupt Handler +//--------------------------------------------------------------------+ +void UDP_Handler(void) +{ + #if CFG_TUSB_RHPORT0_MODE & OPT_MODE_DEVICE + 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) +{ + uint8_t const * buf8 = (uint8_t const *) buf; + for(int i=0; i<len; i++) + { + while ( !_usart_sync_is_ready_to_send(&edbg_com) ) {} + _usart_sync_write_byte(&edbg_com, buf8[i]); + } + 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) +{ + +} |