diff options
Diffstat (limited to 'tinyusb/hw/bsp/nutiny_nuc126v/nutiny_nuc126.c')
-rwxr-xr-x | tinyusb/hw/bsp/nutiny_nuc126v/nutiny_nuc126.c | 153 |
1 files changed, 153 insertions, 0 deletions
diff --git a/tinyusb/hw/bsp/nutiny_nuc126v/nutiny_nuc126.c b/tinyusb/hw/bsp/nutiny_nuc126v/nutiny_nuc126.c new file mode 100755 index 00000000..da62e7bd --- /dev/null +++ b/tinyusb/hw/bsp/nutiny_nuc126v/nutiny_nuc126.c @@ -0,0 +1,153 @@ +/* + * 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 "bsp/board.h" +#include "NuMicro.h" +#include "clk.h" +#include "sys.h" + + +//--------------------------------------------------------------------+ +// Forward USB interrupt events to TinyUSB IRQ Handler +//--------------------------------------------------------------------+ +void USBD_IRQHandler(void) +{ + tud_int_handler(0); +} + +//--------------------------------------------------------------------+ +// MACRO TYPEDEF CONSTANT ENUM +//--------------------------------------------------------------------+ +#define LED_PORT PC +#define LED_PIN 9 +#define LED_PIN_IO PC9 +#define LED_STATE_ON 0 + +#define CRYSTAL_LESS /* system will be 48MHz when defined, otherwise, system is 72MHz */ +#define HIRC48_AUTO_TRIM SYS_IRCTCTL1_REFCKSEL_Msk | (1UL << SYS_IRCTCTL1_LOOPSEL_Pos) | (2UL << SYS_IRCTCTL1_FREQSEL_Pos) +#define TRIM_INIT (SYS_BASE+0x118) + +void board_init(void) +{ + /* Unlock protected registers */ + SYS_UnlockReg(); + + /*---------------------------------------------------------------------------------------------------------*/ + /* Init System Clock */ + /*---------------------------------------------------------------------------------------------------------*/ + + /* Enable Internal RC 22.1184 MHz clock */ + CLK_EnableXtalRC(CLK_PWRCTL_HIRCEN_Msk); + + /* Waiting for Internal RC clock ready */ + CLK_WaitClockReady(CLK_STATUS_HIRCSTB_Msk); + + /* Switch HCLK clock source to Internal RC and HCLK source divide 1 */ + CLK_SetHCLK(CLK_CLKSEL0_HCLKSEL_HIRC, CLK_CLKDIV0_HCLK(1)); + +#ifndef CRYSTAL_LESS + /* Enable external XTAL 12 MHz clock */ + CLK_EnableXtalRC(CLK_PWRCTL_HXTEN_Msk); + + /* Waiting for external XTAL clock ready */ + CLK_WaitClockReady(CLK_STATUS_HXTSTB_Msk); + + /* Set core clock */ + CLK_SetCoreClock(72000000); + + /* Use HIRC as UART clock source */ + CLK_SetModuleClock(UART0_MODULE, CLK_CLKSEL1_UARTSEL_HIRC, CLK_CLKDIV0_UART(1)); + + /* Use PLL as USB clock source */ + CLK_SetModuleClock(USBD_MODULE, CLK_CLKSEL3_USBDSEL_PLL, CLK_CLKDIV0_USB(3)); + +#else + /* Enable Internal RC 48MHz clock */ + CLK_EnableXtalRC(CLK_PWRCTL_HIRC48EN_Msk); + + /* Waiting for Internal RC clock ready */ + CLK_WaitClockReady(CLK_STATUS_HIRC48STB_Msk); + + /* Switch HCLK clock source to Internal RC and HCLK source divide 1 */ + CLK_SetHCLK(CLK_CLKSEL0_HCLKSEL_HIRC48, CLK_CLKDIV0_HCLK(1)); + + /* Use HIRC as UART clock source */ + CLK_SetModuleClock(UART0_MODULE, CLK_CLKSEL1_UARTSEL_HIRC, CLK_CLKDIV0_UART(1)); + + /* Use HIRC48 as USB clock source */ + CLK_SetModuleClock(USBD_MODULE, CLK_CLKSEL3_USBDSEL_HIRC48, CLK_CLKDIV0_USB(1)); +#endif + + /* Enable module clock */ + CLK_EnableModuleClock(USBD_MODULE); + +#if CFG_TUSB_OS == OPT_OS_NONE + // 1ms tick timer + SysTick_Config(48000000 / 1000); +#endif + + // LED + GPIO_SetMode(LED_PORT, 1 << LED_PIN, GPIO_MODE_OUTPUT); +} + +#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 + +//--------------------------------------------------------------------+ +// Board porting API +//--------------------------------------------------------------------+ + +void board_led_write(bool state) +{ + LED_PIN_IO = (state ? LED_STATE_ON : (1-LED_STATE_ON)); +} + +uint32_t board_button_read(void) +{ + return 0; +} + +int board_uart_read(uint8_t* buf, int len) +{ + (void) buf; (void) len; + return 0; +} + +int board_uart_write(void const * buf, int len) +{ + (void) buf; (void) len; + return 0; +} |