1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
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)
{
}
|
