diff options
Diffstat (limited to 'tinyusb/hw/bsp/frdm_k32l2b/frdm_k32l2b.c')
-rwxr-xr-x | tinyusb/hw/bsp/frdm_k32l2b/frdm_k32l2b.c | 140 |
1 files changed, 140 insertions, 0 deletions
diff --git a/tinyusb/hw/bsp/frdm_k32l2b/frdm_k32l2b.c b/tinyusb/hw/bsp/frdm_k32l2b/frdm_k32l2b.c new file mode 100755 index 00000000..c45095ca --- /dev/null +++ b/tinyusb/hw/bsp/frdm_k32l2b/frdm_k32l2b.c @@ -0,0 +1,140 @@ +/* + * The MIT License (MIT) + * + * Copyright (c) 2018, hathach (tinyusb.org) + * Copyright (c) 2020, Koji Kitayama + * + * 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 "../board.h" +#include "board.h" +#include "fsl_gpio.h" +#include "fsl_port.h" +#include "fsl_clock.h" +#include "fsl_lpuart.h" + +#include "clock_config.h" + +//--------------------------------------------------------------------+ +// Forward USB interrupt events to TinyUSB IRQ Handler +//--------------------------------------------------------------------+ +void USB0_IRQHandler(void) +{ + tud_int_handler(0); +} + +void board_init(void) +{ + /* Enable port clocks for UART/LED/Button pins */ + CLOCK_EnableClock(UART_PIN_CLOCK); + CLOCK_EnableClock(LED_PIN_CLOCK); + CLOCK_EnableClock(BUTTON_PIN_CLOCK); + + gpio_pin_config_t led_config = { kGPIO_DigitalOutput, 0 }; + GPIO_PinInit(LED_GPIO, LED_PIN, &led_config); + PORT_SetPinMux(LED_PORT, LED_PIN, kPORT_MuxAsGpio); + + gpio_pin_config_t button_config = { kGPIO_DigitalInput, 0 }; + GPIO_PinInit(BUTTON_GPIO, BUTTON_PIN, &button_config); + const port_pin_config_t BUTTON_CFG = { + kPORT_PullUp, + kPORT_FastSlewRate, + kPORT_PassiveFilterDisable, + kPORT_LowDriveStrength, + kPORT_MuxAsGpio + }; + PORT_SetPinConfig(BUTTON_PORT, BUTTON_PIN, &BUTTON_CFG); + + /* PORTA1 (pin 23) is configured as LPUART0_RX */ + PORT_SetPinMux(PORTA, 1U, kPORT_MuxAlt2); + /* PORTA2 (pin 24) is configured as LPUART0_TX */ + PORT_SetPinMux(PORTA, 2U, kPORT_MuxAlt2); + + SIM->SOPT5 = ((SIM->SOPT5 & + /* Mask bits to zero which are setting */ + (~(SIM_SOPT5_LPUART0TXSRC_MASK | SIM_SOPT5_LPUART0RXSRC_MASK))) + /* LPUART0 Transmit Data Source Select: LPUART0_TX pin. */ + | SIM_SOPT5_LPUART0TXSRC(SOPT5_LPUART0TXSRC_LPUART_TX) + /* LPUART0 Receive Data Source Select: LPUART_RX pin. */ + | SIM_SOPT5_LPUART0RXSRC(SOPT5_LPUART0RXSRC_LPUART_RX)); + + BOARD_BootClockRUN(); + SystemCoreClockUpdate(); + CLOCK_SetLpuart0Clock(1); + +#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 + + lpuart_config_t uart_config; + LPUART_GetDefaultConfig(&uart_config); + uart_config.baudRate_Bps = CFG_BOARD_UART_BAUDRATE; + uart_config.enableTx = true; + uart_config.enableRx = true; + LPUART_Init(UART_PORT, &uart_config, CLOCK_GetFreq(kCLOCK_McgIrc48MClk)); + + // USB + CLOCK_EnableUsbfs0Clock(kCLOCK_UsbSrcIrc48M, 48000000U); +} + +//--------------------------------------------------------------------+ +// Board porting API +//--------------------------------------------------------------------+ + +void board_led_write(bool state) +{ + GPIO_PinWrite(LED_GPIO, LED_PIN, state ? LED_STATE_ON : (1-LED_STATE_ON)); +} + +uint32_t board_button_read(void) +{ + return BUTTON_STATE_ACTIVE == GPIO_PinRead(BUTTON_GPIO, BUTTON_PIN); +} + +int board_uart_read(uint8_t* buf, int len) +{ + LPUART_ReadBlocking(UART_PORT, buf, len); + return len; +} + +int board_uart_write(void const * buf, int len) +{ + LPUART_WriteBlocking(UART_PORT, (uint8_t*)buf, len); + return len; +} + +#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 |