210 lines
6.0 KiB
C
210 lines
6.0 KiB
C
/*
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* The MIT License (MIT)
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*
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* Copyright (c) 2019 Ha Thach (tinyusb.org)
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*
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* This file is part of the TinyUSB stack.
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*/
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#include "chip.h"
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#include "../board.h"
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//--------------------------------------------------------------------+
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// USB Interrupt Handler
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//--------------------------------------------------------------------+
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void USB_IRQHandler(void)
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{
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#if CFG_TUD_ENABLED
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tud_int_handler(0);
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#endif
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#if CFG_TUH_ENABLED
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tuh_int_handler(0);
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#endif
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}
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//--------------------------------------------------------------------+
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// MACRO TYPEDEF CONSTANT ENUM
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//--------------------------------------------------------------------+
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#define LED_PORT 0
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#define LED_PIN 22
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#define LED_STATE_ON 1
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// JOYSTICK_DOWN if using LPCXpresso Base Board
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#define BUTTON_PORT 0
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#define BUTTON_PIN 15
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#define BUTTON_STATE_ACTIVE 0
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#define BOARD_UART_PORT LPC_UART3
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/* System oscillator rate and RTC oscillator rate */
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const uint32_t OscRateIn = 12000000;
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const uint32_t RTCOscRateIn = 32768;
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/* Pin muxing configuration */
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static const PINMUX_GRP_T pinmuxing[] =
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{
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{0, 0, IOCON_MODE_INACT | IOCON_FUNC2}, /* TXD3 */
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{0, 1, IOCON_MODE_INACT | IOCON_FUNC2}, /* RXD3 */
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{LED_PORT, LED_PIN, IOCON_MODE_INACT | IOCON_FUNC0}, /* Led 0 */
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/* Joystick buttons. */
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// {2, 3, IOCON_MODE_INACT | IOCON_FUNC0}, /* JOYSTICK_UP */
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{BUTTON_PORT, BUTTON_PIN, IOCON_FUNC0 | IOCON_MODE_PULLUP}, /* JOYSTICK_DOWN */
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// {2, 4, IOCON_MODE_INACT | IOCON_FUNC0}, /* JOYSTICK_LEFT */
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// {0, 16, IOCON_MODE_INACT | IOCON_FUNC0}, /* JOYSTICK_RIGHT */
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// {0, 17, IOCON_MODE_INACT | IOCON_FUNC0}, /* JOYSTICK_PRESS */
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};
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static const PINMUX_GRP_T pin_usb_mux[] =
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{
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{0, 29, IOCON_MODE_INACT | IOCON_FUNC1}, // D+
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{0, 30, IOCON_MODE_INACT | IOCON_FUNC1}, // D-
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{2, 9, IOCON_MODE_INACT | IOCON_FUNC1}, // Soft Connect
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{1, 19, IOCON_MODE_INACT | IOCON_FUNC2}, // USB_PPWR (Host mode)
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// VBUS is not connected on this board, so leave the pin at default setting.
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/// Chip_IOCON_PinMux(LPC_IOCON, 1, 30, IOCON_MODE_INACT, IOCON_FUNC2); // USB VBUS
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};
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// Invoked by startup code
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void SystemInit(void)
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{
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#ifdef __USE_LPCOPEN
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extern void (* const g_pfnVectors[])(void);
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unsigned int *pSCB_VTOR = (unsigned int *) 0xE000ED08;
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*pSCB_VTOR = (unsigned int) g_pfnVectors;
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#endif
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Chip_IOCON_Init(LPC_IOCON);
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Chip_IOCON_SetPinMuxing(LPC_IOCON, pinmuxing, sizeof(pinmuxing) / sizeof(PINMUX_GRP_T));
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Chip_SetupXtalClocking();
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Chip_SYSCTL_SetFLASHAccess(FLASHTIM_100MHZ_CPU);
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}
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void board_init(void)
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{
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SystemCoreClockUpdate();
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#if CFG_TUSB_OS == OPT_OS_NONE
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// 1ms tick timer
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SysTick_Config(SystemCoreClock / 1000);
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#elif CFG_TUSB_OS == OPT_OS_FREERTOS
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// If freeRTOS is used, IRQ priority is limit by max syscall ( smaller is higher )
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NVIC_SetPriority(USB_IRQn, configLIBRARY_MAX_SYSCALL_INTERRUPT_PRIORITY );
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#endif
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Chip_GPIO_Init(LPC_GPIO);
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// LED
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Chip_GPIO_SetPinDIROutput(LPC_GPIO, LED_PORT, LED_PIN);
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// Button
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Chip_GPIO_SetPinDIRInput(LPC_GPIO, BUTTON_PORT, BUTTON_PIN);
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#if 0
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//------------- UART -------------//
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PINSEL_CFG_Type PinCfg =
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{
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.Portnum = 0,
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.Pinnum = 0, // TXD is P0.0
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.Funcnum = 2,
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.OpenDrain = 0,
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.Pinmode = 0
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};
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PINSEL_ConfigPin(&PinCfg);
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PinCfg.Portnum = 0;
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PinCfg.Pinnum = 1; // RXD is P0.1
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PINSEL_ConfigPin(&PinCfg);
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UART_CFG_Type UARTConfigStruct;
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UART_ConfigStructInit(&UARTConfigStruct);
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UARTConfigStruct.Baud_rate = CFG_BOARD_UART_BAUDRATE;
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UART_Init(BOARD_UART_PORT, &UARTConfigStruct);
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UART_TxCmd(BOARD_UART_PORT, ENABLE); // Enable UART Transmit
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#endif
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//------------- USB -------------//
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Chip_IOCON_SetPinMuxing(LPC_IOCON, pin_usb_mux, sizeof(pin_usb_mux) / sizeof(PINMUX_GRP_T));
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Chip_USB_Init();
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enum {
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USBCLK_DEVCIE = 0x12, // AHB + Device
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USBCLK_HOST = 0x19, // AHB + Host + OTG
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// 0x1B // Host + Device + OTG + AHB
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};
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uint32_t const clk_en = CFG_TUD_ENABLED ? USBCLK_DEVCIE : USBCLK_HOST;
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LPC_USB->OTGClkCtrl = clk_en;
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while ( (LPC_USB->OTGClkSt & clk_en) != clk_en );
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#if CFG_TUH_ENABLED
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// set portfunc to host !!!
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LPC_USB->StCtrl = 0x3; // should be 1
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#endif
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}
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//--------------------------------------------------------------------+
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// Board porting API
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//--------------------------------------------------------------------+
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void board_led_write(bool state)
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{
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Chip_GPIO_SetPinState(LPC_GPIO, LED_PORT, LED_PIN, state ? LED_STATE_ON : (1-LED_STATE_ON));
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}
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uint32_t board_button_read(void)
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{
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return BUTTON_STATE_ACTIVE == Chip_GPIO_GetPinState(LPC_GPIO, BUTTON_PORT, BUTTON_PIN);
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}
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int board_uart_read(uint8_t* buf, int len)
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{
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// return UART_ReceiveByte(BOARD_UART_PORT);
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(void) buf; (void) len;
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return 0;
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}
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int board_uart_write(void const * buf, int len)
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{
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// UART_Send(BOARD_UART_PORT, &c, 1, BLOCKING);
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(void) buf; (void) len;
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return 0;
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}
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#if CFG_TUSB_OS == OPT_OS_NONE
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volatile uint32_t system_ticks = 0;
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void SysTick_Handler (void)
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{
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system_ticks++;
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}
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uint32_t board_millis(void)
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{
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return system_ticks;
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}
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#endif
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