/*
* 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
extern void (* const g_pfnVectors[])(void);
void SystemInit(void)
{
// Remap isr vector
*((uint32_t *) 0xE000ED08) = (uint32_t) &g_pfnVectors;
// 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();
// // Reset controller
// LPC_USB0->USBCMD_D |= 0x02;
// while( LPC_USB0->USBCMD_D & 0x02 ) {}
//
// // Set mode
// #if CFG_TUSB_RHPORT0_MODE & OPT_MODE_HOST
// LPC_USB0->USBMODE_H = USBMODE_HOST | (USBMODE_VBUS_HIGH << 5);
//
// LPC_USB0->PORTSC1_D |= (1<<24); // FIXME force full speed for debugging
// #else // TODO OTG
// LPC_USB0->USBMODE_D = USBMODE_DEVICE;
// LPC_USB0->OTGSC = (1<<3) | (1<<0) /*| (1<<16)| (1<<24)| (1<<25)| (1<<26)| (1<<27)| (1<<28)| (1<<29)| (1<<30)*/;
// #endif
#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();
// // Reset controller
// LPC_USB1->USBCMD_D |= 0x02;
// while( LPC_USB1->USBCMD_D & 0x02 ) {}
//
// // Set mode
// #if CFG_TUSB_RHPORT1_MODE & OPT_MODE_HOST
// LPC_USB1->USBMODE_H = USBMODE_HOST | (USBMODE_VBUS_HIGH << 5);
// #else // TODO OTG
// LPC_USB1->USBMODE_D = USBMODE_DEVICE;
// #endif
//
// // USB1 as fullspeed
// LPC_USB1->PORTSC1_D |= (1<<24);
// 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_isr(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_isr(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