diff options
Diffstat (limited to 'tinyusb/hw/bsp/mbed1768/mbed1768.c')
| -rwxr-xr-x | tinyusb/hw/bsp/mbed1768/mbed1768.c | 197 |
1 files changed, 197 insertions, 0 deletions
diff --git a/tinyusb/hw/bsp/mbed1768/mbed1768.c b/tinyusb/hw/bsp/mbed1768/mbed1768.c new file mode 100755 index 00000000..5495ed16 --- /dev/null +++ b/tinyusb/hw/bsp/mbed1768/mbed1768.c @@ -0,0 +1,197 @@ +/* + * 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 18 +#define LED_STATE_ON 1 + +// JOYSTICK_DOWN if using LPCXpresso Base Board +#define BUTTON_PORT 0 +#define BUTTON_PIN 15 +#define BUTTON_STATE_ACTIVE 0 + +#define BOARD_UART_PORT LPC_UART3 + +/* System oscillator rate and RTC oscillator rate */ +const uint32_t OscRateIn = 10000000; +const uint32_t RTCOscRateIn = 32768; + +/* Pin muxing configuration */ +static const PINMUX_GRP_T pinmuxing[] = +{ + {LED_PORT, LED_PIN, IOCON_MODE_INACT | IOCON_FUNC0}, + {BUTTON_PORT, BUTTON_PIN, IOCON_FUNC0 | IOCON_MODE_PULLUP}, +}; + +static const PINMUX_GRP_T pin_usb_mux[] = +{ + {0, 29, IOCON_MODE_INACT | IOCON_FUNC1}, // D+ + {0, 30, IOCON_MODE_INACT | IOCON_FUNC1}, // D- + {2, 9, IOCON_MODE_INACT | IOCON_FUNC1}, // Connect + + {1, 19, IOCON_MODE_INACT | IOCON_FUNC2}, // USB_PPWR + {1, 22, IOCON_MODE_INACT | IOCON_FUNC2}, // USB_PWRD + + /* VBUS is not connected on this board, so leave the pin at default setting. */ + /*Chip_IOCON_PinMux(LPC_IOCON, 1, 30, IOCON_MODE_INACT, IOCON_FUNC2);*/ /* USB VBUS */ +}; + +// 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; +#endif + + Chip_IOCON_Init(LPC_IOCON); + Chip_IOCON_SetPinMuxing(LPC_IOCON, pinmuxing, sizeof(pinmuxing) / sizeof(PINMUX_GRP_T)); + Chip_SetupXtalClocking(); +} + +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(USB_IRQn, configLIBRARY_MAX_SYSCALL_INTERRUPT_PRIORITY ); +#endif + + Chip_GPIO_Init(LPC_GPIO); + + // LED + Chip_GPIO_SetPinDIROutput(LPC_GPIO, LED_PORT, LED_PIN); + + // Button + Chip_GPIO_SetPinDIRInput(LPC_GPIO, BUTTON_PORT, BUTTON_PIN); + +#if 0 + //------------- UART -------------// + PINSEL_CFG_Type PinCfg = + { + .Portnum = 0, + .Pinnum = 0, // TXD is P0.0 + .Funcnum = 2, + .OpenDrain = 0, + .Pinmode = 0 + }; + PINSEL_ConfigPin(&PinCfg); + + PinCfg.Portnum = 0; + PinCfg.Pinnum = 1; // RXD is P0.1 + PINSEL_ConfigPin(&PinCfg); + + UART_CFG_Type UARTConfigStruct; + UART_ConfigStructInit(&UARTConfigStruct); + UARTConfigStruct.Baud_rate = CFG_BOARD_UART_BAUDRATE; + + UART_Init(BOARD_UART_PORT, &UARTConfigStruct); + UART_TxCmd(BOARD_UART_PORT, ENABLE); // Enable UART Transmit +#endif + + //------------- USB -------------// + Chip_IOCON_SetPinMuxing(LPC_IOCON, pin_usb_mux, sizeof(pin_usb_mux) / sizeof(PINMUX_GRP_T)); + Chip_USB_Init(); + + enum { + USBCLK_DEVCIE = 0x12, // AHB + Device + USBCLK_HOST = 0x19, // AHB + Host + OTG +// 0x1B // Host + Device + OTG + AHB + }; + + uint32_t const clk_en = TUSB_OPT_DEVICE_ENABLED ? USBCLK_DEVCIE : USBCLK_HOST; + + LPC_USB->OTGClkCtrl = clk_en; + while ( (LPC_USB->OTGClkSt & clk_en) != clk_en ); + +#if TUSB_OPT_HOST_ENABLED + // set portfunc to host !!! + LPC_USB->StCtrl = 0x3; // should be 1 +#endif +} + +//--------------------------------------------------------------------+ +// USB Interrupt Handler +//--------------------------------------------------------------------+ +void USB_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 +} + +//--------------------------------------------------------------------+ +// Board porting API +//--------------------------------------------------------------------+ + +void board_led_write(bool state) +{ + Chip_GPIO_SetPinState(LPC_GPIO, 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, 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 |