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Diffstat (limited to '')
| -rw-r--r-- | circuitpython/lib/tinyusb/hw/bsp/stm32l4/family.c | 198 |
1 files changed, 198 insertions, 0 deletions
diff --git a/circuitpython/lib/tinyusb/hw/bsp/stm32l4/family.c b/circuitpython/lib/tinyusb/hw/bsp/stm32l4/family.c new file mode 100644 index 0000000..c15be98 --- /dev/null +++ b/circuitpython/lib/tinyusb/hw/bsp/stm32l4/family.c @@ -0,0 +1,198 @@ +/* + * The MIT License (MIT) + * + * Copyright (c) 2019 William D. Jones (thor0505@comcast.net), + * Ha Thach (tinyusb.org) + * Uwe Bonnes (bon@elektron.ikp.physik.tu-darmstadt.de) + * + * 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 "stm32l4xx_hal.h" +#include "bsp/board.h" +#include "board.h" + +//--------------------------------------------------------------------+ +// Forward USB interrupt events to TinyUSB IRQ Handler +//--------------------------------------------------------------------+ +void OTG_FS_IRQHandler(void) +{ + tud_int_handler(0); +} + +//--------------------------------------------------------------------+ +// MACRO TYPEDEF CONSTANT ENUM +//--------------------------------------------------------------------+ + +UART_HandleTypeDef UartHandle; + +void board_init(void) +{ + board_clock_init(); + + // Enable All GPIOs clocks + __HAL_RCC_GPIOA_CLK_ENABLE(); + __HAL_RCC_GPIOB_CLK_ENABLE(); + __HAL_RCC_GPIOC_CLK_ENABLE(); + __HAL_RCC_GPIOD_CLK_ENABLE(); + __HAL_RCC_GPIOE_CLK_ENABLE(); + __HAL_RCC_GPIOF_CLK_ENABLE(); + __HAL_RCC_GPIOG_CLK_ENABLE(); + __HAL_RCC_GPIOH_CLK_ENABLE(); + UART_CLK_EN(); + +#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 + + /* Enable USB power on Pwrctrl CR2 register */ + /* Enable Power Clock*/ + __HAL_RCC_PWR_CLK_ENABLE(); + +#if defined(PWR_CR5_R1MODE) + /* Enable voltage range 1 boost mode for frequency above 80 Mhz */ + HAL_PWREx_ControlVoltageScaling(PWR_REGULATOR_VOLTAGE_SCALE1_BOOST); +#endif + + /* Enable USB power on Pwrctrl CR2 register */ + HAL_PWREx_EnableVddUSB(); + + GPIO_InitTypeDef GPIO_InitStruct; + + // LED + GPIO_InitStruct.Pin = LED_PIN; + GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP; + GPIO_InitStruct.Pull = GPIO_PULLUP; + HAL_GPIO_Init(LED_PORT, &GPIO_InitStruct); + + // Button + GPIO_InitStruct.Pin = BUTTON_PIN; + GPIO_InitStruct.Mode = GPIO_MODE_INPUT; + GPIO_InitStruct.Pull = GPIO_NOPULL; + HAL_GPIO_Init(BUTTON_PORT, &GPIO_InitStruct); + + // IOSV bit MUST be set to access GPIO port G[2:15] */ + __HAL_RCC_PWR_CLK_ENABLE(); + HAL_PWREx_EnableVddIO2(); + + // Uart + GPIO_InitStruct.Pin = UART_TX_PIN | UART_RX_PIN; + GPIO_InitStruct.Mode = GPIO_MODE_AF_PP; + GPIO_InitStruct.Pull = GPIO_PULLUP; + GPIO_InitStruct.Alternate = UART_GPIO_AF; + HAL_GPIO_Init(UART_GPIO_PORT, &GPIO_InitStruct); + + UartHandle.Instance = UART_DEV; + UartHandle.Init.BaudRate = CFG_BOARD_UART_BAUDRATE; + UartHandle.Init.WordLength = UART_WORDLENGTH_8B; + UartHandle.Init.StopBits = UART_STOPBITS_1; + UartHandle.Init.Parity = UART_PARITY_NONE; + UartHandle.Init.HwFlowCtl = UART_HWCONTROL_NONE; + UartHandle.Init.Mode = UART_MODE_TX_RX; + UartHandle.Init.OverSampling = UART_OVERSAMPLING_16; + UartHandle.Init.OneBitSampling = UART_ONE_BIT_SAMPLE_DISABLE; + //UartHandle.Init.ClockPrescaler = UART_PRESCALER_DIV1; + UartHandle.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_NO_INIT; + + HAL_UART_Init(&UartHandle); + + /* Configure USB FS GPIOs */ + /* Configure DM DP Pins */ + GPIO_InitStruct.Pin = (GPIO_PIN_11 | GPIO_PIN_12); + GPIO_InitStruct.Mode = GPIO_MODE_AF_PP; + GPIO_InitStruct.Pull = GPIO_NOPULL; + GPIO_InitStruct.Speed = GPIO_SPEED_HIGH; + GPIO_InitStruct.Alternate = GPIO_AF10_OTG_FS; + HAL_GPIO_Init(GPIOA, &GPIO_InitStruct); + + /* Configure VBUS Pin */ + GPIO_InitStruct.Pin = GPIO_PIN_9; + GPIO_InitStruct.Mode = GPIO_MODE_INPUT; + GPIO_InitStruct.Pull = GPIO_NOPULL; + HAL_GPIO_Init(GPIOA, &GPIO_InitStruct); + + /* Configure ID pin */ + GPIO_InitStruct.Pin = GPIO_PIN_10; + GPIO_InitStruct.Mode = GPIO_MODE_AF_OD; + GPIO_InitStruct.Pull = GPIO_PULLUP; + GPIO_InitStruct.Alternate = GPIO_AF10_OTG_FS; + HAL_GPIO_Init(GPIOA, &GPIO_InitStruct); + + /* Enable USB FS Clocks */ + __HAL_RCC_USB_OTG_FS_CLK_ENABLE(); + + board_vbus_sense_init(); +} + +//--------------------------------------------------------------------+ +// Board porting API +//--------------------------------------------------------------------+ + +void board_led_write(bool state) +{ + HAL_GPIO_WritePin(LED_PORT, LED_PIN, state ? LED_STATE_ON : (1-LED_STATE_ON)); +} + +uint32_t board_button_read(void) +{ + return BUTTON_STATE_ACTIVE == HAL_GPIO_ReadPin(BUTTON_PORT, BUTTON_PIN); +} + +int board_uart_read(uint8_t* buf, int len) +{ + (void) buf; (void) len; + return 0; +} + +int board_uart_write(void const * buf, int len) +{ + HAL_UART_Transmit(&UartHandle, (uint8_t*)(uintptr_t) buf, len, 0xffff); + 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 + +void HardFault_Handler (void) +{ + asm("bkpt"); +} + +// Required by __libc_init_array in startup code if we are compiling using +// -nostdlib/-nostartfiles. +void _init(void) +{ + +} |