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
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
|
/*
* The MIT License (MIT)
*
* Copyright (c) 2019 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.
*/
#include "chip.h"
#include "../board.h"
#define LED_PORT 1
#define LED_PIN 12
#define LED_STATE_ON 0
#define BUTTON_PORT 0
#define BUTTON_PIN 7
#define BUTTON_STATE_ACTIVE 0
#define BOARD_UART_PORT LPC_USART0
#define BOARD_UART_PIN_PORT 0x0f
#define BOARD_UART_PIN_TX 10 // PF.10 : UART0_TXD
#define BOARD_UART_PIN_RX 11 // PF.11 : UART0_RXD
/*------------------------------------------------------------------*/
/* BOARD API
*------------------------------------------------------------------*/
/* System configuration variables used by chip driver */
const uint32_t OscRateIn = 12000000;
const uint32_t ExtRateIn = 0;
static const PINMUX_GRP_T pinmuxing[] =
{
// LED P2.12 as GPIO 1.12
{2, 11, (SCU_MODE_INBUFF_EN | SCU_MODE_PULLDOWN | SCU_MODE_FUNC0)},
// Button P2.7 as GPIO 0.7
{2, 7, (SCU_MODE_PULLUP | SCU_MODE_INBUFF_EN | SCU_MODE_ZIF_DIS | SCU_MODE_FUNC0)},
// USB
{2, 6, (SCU_MODE_PULLUP | SCU_MODE_INBUFF_EN | SCU_MODE_FUNC4)}, // USB1_PWR_EN
{2, 5, (SCU_MODE_INACT | SCU_MODE_INBUFF_EN | SCU_MODE_ZIF_DIS | SCU_MODE_FUNC2)}, // USB1_VBUS
{1, 7, (SCU_MODE_PULLUP | SCU_MODE_INBUFF_EN | SCU_MODE_FUNC4)}, // USB0_PWRN_EN
// SPIFI
{3, 3, (SCU_PINIO_FAST | SCU_MODE_FUNC3)}, /* SPIFI CLK */
{3, 4, (SCU_PINIO_FAST | SCU_MODE_FUNC3)}, /* SPIFI D3 */
{3, 5, (SCU_PINIO_FAST | SCU_MODE_FUNC3)}, /* SPIFI D2 */
{3, 6, (SCU_PINIO_FAST | SCU_MODE_FUNC3)}, /* SPIFI D1 */
{3, 7, (SCU_PINIO_FAST | SCU_MODE_FUNC3)}, /* SPIFI D0 */
{3, 8, (SCU_PINIO_FAST | SCU_MODE_FUNC3)} /* SPIFI CS/SSEL */
};
// Invoked by startup code
void SystemInit(void)
{
#ifdef __USE_LPCOPEN
extern void (* const g_pfnVectors[])(void);
unsigned int *pSCB_VTOR = (unsigned int *) 0xE000ED08;
*pSCB_VTOR = (unsigned int) g_pfnVectors;
#if __FPU_USED == 1
fpuInit();
#endif
#endif // __USE_LPCOPEN
// Set up pinmux
Chip_SCU_SetPinMuxing(pinmuxing, sizeof(pinmuxing) / sizeof(PINMUX_GRP_T));
//------------- Set up clock -------------//
Chip_Clock_SetBaseClock(CLK_BASE_SPIFI, CLKIN_IRC, true, false); // change SPIFI to IRC during clock programming
LPC_SPIFI->CTRL |= SPIFI_CTRL_FBCLK(1); // and set FBCLK in SPIFI controller
Chip_SetupCoreClock(CLKIN_CRYSTAL, MAX_CLOCK_FREQ, true);
/* Reset and enable 32Khz oscillator */
LPC_CREG->CREG0 &= ~((1 << 3) | (1 << 2));
LPC_CREG->CREG0 |= (1 << 1) | (1 << 0);
/* Setup a divider E for main PLL clock switch SPIFI clock to that divider.
Divide rate is based on CPU speed and speed of SPI FLASH part. */
#if (MAX_CLOCK_FREQ > 180000000)
Chip_Clock_SetDivider(CLK_IDIV_E, CLKIN_MAINPLL, 5);
#else
Chip_Clock_SetDivider(CLK_IDIV_E, CLKIN_MAINPLL, 4);
#endif
Chip_Clock_SetBaseClock(CLK_BASE_SPIFI, CLKIN_IDIVE, true, false);
/* Setup system base clocks and initial states. This won't enable and
disable individual clocks, but sets up the base clock sources for
each individual peripheral clock. */
Chip_Clock_SetBaseClock(CLK_BASE_USB1, CLKIN_IDIVD, true, true);
}
void board_init(void)
{
SystemCoreClockUpdate();
#if CFG_TUSB_OS == OPT_OS_NONE
// 1ms tick timer
SysTick_Config(SystemCoreClock / 1000);
#elif CFG_TUSB_OS == OPT_OS_FREERTOS
// If freeRTOS is used, IRQ priority is limit by max syscall ( smaller is higher )
//NVIC_SetPriority(USB0_IRQn, configLIBRARY_MAX_SYSCALL_INTERRUPT_PRIORITY );
#endif
Chip_GPIO_Init(LPC_GPIO_PORT);
// LED
Chip_GPIO_SetPinDIROutput(LPC_GPIO_PORT, LED_PORT, LED_PIN);
// Button
Chip_GPIO_SetPinDIRInput(LPC_GPIO_PORT, BUTTON_PORT, BUTTON_PIN);
#if 0
//------------- UART -------------//
scu_pinmux(BOARD_UART_PIN_PORT, BOARD_UART_PIN_TX, MD_PDN, FUNC1);
scu_pinmux(BOARD_UART_PIN_PORT, BOARD_UART_PIN_RX, MD_PLN | MD_EZI | MD_ZI, FUNC1);
UART_CFG_Type UARTConfigStruct;
UART_ConfigStructInit(&UARTConfigStruct);
UARTConfigStruct.Baud_rate = CFG_BOARD_UART_BAUDRATE;
UARTConfigStruct.Clock_Speed = 0;
UART_Init(BOARD_UART_PORT, &UARTConfigStruct);
UART_TxCmd(BOARD_UART_PORT, ENABLE); // Enable UART Transmit
#endif
//------------- USB -------------//
enum {
USBMODE_DEVICE = 2,
USBMODE_HOST = 3
};
enum {
USBMODE_VBUS_LOW = 0,
USBMODE_VBUS_HIGH = 1
};
/* USB0
* For USB Device operation; insert jumpers in position 1-2 in JP17/JP18/JP19. GPIO28 controls USB
* connect functionality and LED32 lights when the USB Device is connected. SJ4 has pads 1-2 shorted
* by default. LED33 is controlled by GPIO27 and signals USB-up state. GPIO54 is used for VBUS
* sensing.
* For USB Host operation; insert jumpers in position 2-3 in JP17/JP18/JP19. USB Host power is
* controlled via distribution switch U20 (found in schematic page 11). Signal GPIO26 is active low and
* enables +5V on VBUS2. LED35 light whenever +5V is present on VBUS2. GPIO55 is connected to
* status feedback from the distribution switch. GPIO54 is used for VBUS sensing. 15Kohm pull-down
* resistors are always active
*/
#if CFG_TUSB_RHPORT0_MODE
Chip_USB0_Init();
#endif
/* USB1
* When USB channel #1 is used as USB Host, 15Kohm pull-down resistors are needed on the USB data
* signals. These are activated inside the USB OTG chip (U31), and this has to be done via the I2C
* interface of GPIO52/GPIO53.
* J20 is the connector to use when USB Host is used. In order to provide +5V to the external USB
* device connected to this connector (J20), channel A of U20 must be enabled. It is enabled by default
* since SJ5 is normally connected between pin 1-2. LED34 lights green when +5V is available on J20.
* JP15 shall not be inserted. JP16 has no effect
*
* When USB channel #1 is used as USB Device, a 1.5Kohm pull-up resistor is needed on the USB DP
* data signal. There are two methods to create this. JP15 is inserted and the pull-up resistor is always
* enabled. Alternatively, the pull-up resistor is activated inside the USB OTG chip (U31), and this has to
* be done via the I2C interface of GPIO52/GPIO53. In the latter case, JP15 shall not be inserted.
* J19 is the connector to use when USB Device is used. Normally it should be a USB-B connector for
* creating a USB Device interface, but the mini-AB connector can also be used in this case. The status
* of VBUS can be read via U31.
* JP16 shall not be inserted.
*/
#if CFG_TUSB_RHPORT1_MODE
Chip_USB1_Init();
// Chip_GPIO_SetPinDIROutput(LPC_GPIO_PORT, 5, 6); /* GPIO5[6] = USB1_PWR_EN */
// Chip_GPIO_SetPinState(LPC_GPIO_PORT, 5, 6, true); /* GPIO5[6] output high */
#endif
}
//--------------------------------------------------------------------+
// USB Interrupt Handler
//--------------------------------------------------------------------+
void USB0_IRQHandler(void)
{
#if CFG_TUSB_RHPORT0_MODE & OPT_MODE_HOST
tuh_int_handler(0);
#endif
#if CFG_TUSB_RHPORT0_MODE & OPT_MODE_DEVICE
tud_int_handler(0);
#endif
}
void USB1_IRQHandler(void)
{
#if CFG_TUSB_RHPORT1_MODE & OPT_MODE_HOST
tuh_int_handler(1);
#endif
#if CFG_TUSB_RHPORT1_MODE & OPT_MODE_DEVICE
tud_int_handler(1);
#endif
}
//--------------------------------------------------------------------+
// Board porting API
//--------------------------------------------------------------------+
void board_led_write(bool state)
{
Chip_GPIO_SetPinState(LPC_GPIO_PORT, LED_PORT, LED_PIN, state ? LED_STATE_ON : (1-LED_STATE_ON));
}
uint32_t board_button_read(void)
{
return BUTTON_STATE_ACTIVE == Chip_GPIO_GetPinState(LPC_GPIO_PORT, BUTTON_PORT, BUTTON_PIN);
}
int board_uart_read(uint8_t* buf, int len)
{
//return UART_ReceiveByte(BOARD_UART_PORT);
(void) buf; (void) len;
return 0;
}
int board_uart_write(void const * buf, int len)
{
//UART_Send(BOARD_UART_PORT, &c, 1, BLOCKING);
(void) buf; (void) len;
return 0;
}
#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
|
