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/*
* 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.
*
*/
/* metadata:
manufacturer: Microchip
*/
// Suppress warning caused by mcu driver
#ifdef __GNUC__
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wcast-qual"
#pragma GCC diagnostic ignored "-Wredundant-decls"
#pragma GCC diagnostic ignored "-Wconversion"
#pragma GCC diagnostic ignored "-Wsign-conversion"
#endif
#include "sam.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"
#ifdef __GNUC__
#pragma GCC diagnostic pop
#endif
#include "bsp/board_api.h"
#include "board.h"
//--------------------------------------------------------------------+
// MACRO TYPEDEF CONSTANT ENUM DECLARATION
//--------------------------------------------------------------------+
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);
#elif CFG_TUSB_OS == OPT_OS_FREERTOS
// Explicitly disable systick to prevent its ISR from running before scheduler start
SysTick->CTRL &= ~1U;
NVIC_SetPriority(UDP_IRQn, configLIBRARY_MAX_SYSCALL_INTERRUPT_PRIORITY);
#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_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) {
uint8_t const* buf8 = (uint8_t const*) buf;
int count = 0;
while (count < len) {
if (_usart_sync_is_ready_to_send(&edbg_com)) {
_usart_sync_write_byte(&edbg_com, buf8[count]);
count++;
} else {
break;
}
}
return count;
}
#if CFG_TUSB_OS == OPT_OS_NONE
volatile uint32_t system_ticks = 0;
void SysTick_Handler(void) {
system_ticks++;
}
uint32_t tusb_time_millis_api(void) {
return system_ticks;
}
#endif
// Required by __libc_init_array in startup code if we are compiling using
// -nostdlib/-nostartfiles.
void _init(void);
void _init(void) {
}
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